{"id":235,"date":"2026-04-30T02:50:20","date_gmt":"2026-04-30T02:50:20","guid":{"rendered":"https:\/\/automatictransmissionpart.com\/?post_type=product&p=235"},"modified":"2026-04-30T08:45:50","modified_gmt":"2026-04-30T08:45:50","slug":"ep-700atv-front-axle-differential-assembly-and-differential-lock","status":"publish","type":"product","link":"https:\/\/automatictransmissionpart.com\/ta\/product\/ep-700atv-front-axle-differential-assembly-and-differential-lock\/","title":{"rendered":"EP-700ATV \u0bae\u0bc1\u0ba9\u0bcd \u0b85\u0b9a\u0bcd\u0b9a\u0bc1 \u0b9f\u0bbf\u0b83\u0baa\u0bb0\u0bc6\u0ba9\u0bcd\u0bb7\u0bbf\u0baf\u0bb2\u0bcd \u0b85\u0b9a\u0bc6\u0bae\u0bcd\u0baa\u0bbf\u0bb3\u0bbf \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd \u0b9f\u0bbf\u0b83\u0baa\u0bb0\u0bc6\u0ba9\u0bcd\u0bb7\u0bbf\u0baf\u0bb2\u0bcd \u0bb2\u0bbe\u0b95\u0bcd"},"content":{"rendered":"
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EP-700ATV \u0bae\u0bc1\u0ba9\u0bcd \u0b85\u0b9a\u0bcd\u0b9a\u0bc1 \u0b9f\u0bbf\u0b83\u0baa\u0bb0\u0bc6\u0ba9\u0bcd\u0bb7\u0bbf\u0baf\u0bb2\u0bcd \u0b85\u0b9a\u0bc6\u0bae\u0bcd\u0baa\u0bbf\u0bb3\u0bbf \u0bae\u0bb1\u0bcd\u0bb1\u0bc1\u0bae\u0bcd \u0b9f\u0bbf\u0b83\u0baa\u0bb0\u0bc6\u0ba9\u0bcd\u0bb7\u0bbf\u0baf\u0bb2\u0bcd \u0bb2\u0bbe\u0b95\u0bcd<\/h2>\n

Compact planetary gear ATV front axle differential assembly<\/strong> with integrated mechanical differential lock \u2014 engineered for 700cc all-terrain vehicles operating in demanding off-road, agricultural, and patrol environments across Colombia and global markets.<\/p>\n

Model: EP-700ATV<\/span>
\nWeight: 1.58 kg<\/span>
\nDimensions: 140 \u00d7 140 \u00d7 108 mm<\/span>
\nISO 9001 Certified Production<\/span><\/div>\n<\/div>\n
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1. Technical Specifications \u2014 EP-700ATV Front Axle Differential Assembly<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
No.<\/th>\n\u0b85\u0bb3\u0bb5\u0bc1\u0bb0\u0bc1<\/th>\nSymbol \/ Unit<\/th>\n\u0bae\u0ba4\u0bbf\u0baa\u0bcd\u0baa\u0bc1 \/ \u0bb5\u0bbf\u0bb5\u0bb0\u0b95\u0bcd\u0b95\u0bc1\u0bb1\u0bbf\u0baa\u0bcd\u0baa\u0bc1<\/th>\n<\/tr>\n<\/thead>\n
01<\/td>\nModel Number<\/td>\n\u2014<\/td>\nEP-700ATV Front Axle Differential Assembly<\/td>\n<\/tr>\n
02<\/td>\nApplication<\/td>\n\u2014<\/td>\n700cc ATV \u2014 Front Axle Drive<\/td>\n<\/tr>\n
03<\/td>\nDifferential Type<\/td>\n\u2014<\/td>\nCompact Planetary Gear Differential<\/td>\n<\/tr>\n
04<\/td>\nMax Input Torque<\/td>\nT max<\/td>\n320 N\u00b7m<\/td>\n<\/tr>\n
05<\/td>\nMax Input Rotation Rate<\/td>\nn max<\/td>\n4,500 rpm<\/td>\n<\/tr>\n
06<\/td>\nCentre-to-Centre Spacing<\/td>\nA (mm)<\/td>\n52 mm<\/td>\n<\/tr>\n
07<\/td>\n\u0b95\u0bbf\u0baf\u0bb0\u0bcd \u0bb5\u0bbf\u0b95\u0bbf\u0ba4\u0bae\u0bcd<\/td>\nU<\/td>\n1.57 : 1<\/td>\n<\/tr>\n
08<\/td>\nInput Spline Type<\/td>\n\u2014<\/td>\nInternal Spline (involute)<\/td>\n<\/tr>\n
09<\/td>\nInput Spline Module<\/td>\nm<\/td>\n1<\/td>\n<\/tr>\n
10<\/td>\nInput Spline Tooth Count<\/td>\nz<\/td>\n21<\/td>\n<\/tr>\n
11<\/td>\nInput Pressure Angle<\/td>\na<\/td>\n45\u00b0<\/td>\n<\/tr>\n
12<\/td>\nInput Shift Coefficient<\/td>\nx<\/td>\n\u22120.475 \/ +0.24<\/td>\n<\/tr>\n
13<\/td>\nOutput Spline Type<\/td>\n\u2014<\/td>\nInternal Spline (involute)<\/td>\n<\/tr>\n
14<\/td>\nOutput Spline Module<\/td>\nm<\/td>\n1<\/td>\n<\/tr>\n
15<\/td>\nOutput Spline Tooth Count<\/td>\nz<\/td>\n33<\/td>\n<\/tr>\n
16<\/td>\nOutput Pressure Angle<\/td>\na<\/td>\n20\u00b0<\/td>\n<\/tr>\n
17<\/td>\nOutput Shift Coefficient<\/td>\nx<\/td>\n\u22120.475 \/ +0.24<\/td>\n<\/tr>\n
18<\/td>\nOverall Dimensions (L \u00d7 W \u00d7 H)<\/td>\nmm<\/td>\n140 \u00d7 140 \u00d7 108<\/td>\n<\/tr>\n
19<\/td>\nAssembly Weight<\/td>\nkg<\/td>\n1.58<\/td>\n<\/tr>\n
20<\/td>\nDifferential Lock Type<\/td>\n\u2014<\/td>\nMechanical Collar Lock \u2014 Driver Selectable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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2. What is EP-700ATV Front Axle Differential Assembly and Differential Lock<\/h2>\n

The EP-700ATV is a purpose-designed front axle differential assembly<\/strong> for 700cc all-terrain vehicles. It uses a compact planetary gear differential architecture rather than a conventional bevel-gear spider arrangement, which allows the entire differential assembly to fit within a 140\u2009\u00d7\u2009140\u2009\u00d7\u2009108\u2009mm envelope at just 1.58\u2009kg. This reduced packaging footprint is critical for modern 700cc ATV front axle housings where space is at a premium, while the planetary layout still delivers reliable torque management across the full range of surface conditions encountered in recreational trail riding, agricultural fieldwork, and patrol applications. The compact differential category \u2014 sometimes called a tight-type differential in Chinese engineering nomenclature \u2014 distributes power to both front half-shafts through the self-rotation of the planet gears. When one wheel encounters less resistance than the other (the wheel starts to spin), the planet gears rotate on their own axes to accommodate the speed differential between the two output shafts. The intentional internal friction in this design ensures a modest passive torque-biasing effect is always present, meaning that some torque continues to transfer to the higher-traction wheel even during mild differential action \u2014 a practical advantage over a fully open differential with zero bias.<\/p>\n

Understanding what a front axle differential<\/em> does is the foundation for appreciating where the EP-700ATV Front Axle Differential Assembly\u2019s differential lock adds value. In unlocked mode, the assembly allows both front wheels to rotate at different speeds during cornering \u2014 essential for avoiding tyre scrub and handling instability on hard surfaces. On loose terrain, however, this same freedom becomes a liability: the wheel with least resistance claims all available torque, leaving the vehicle effectively stationary with one front wheel spinning. This is the scenario \u2014 familiar to any ATV operator who has worked in the irrigated fields of Colombia\u2019s Cauca Valley or the steep coffee-farming slopes of the Eje Cafetero \u2014 where engaging the front axle differential lock<\/strong> makes the critical difference between forward progress and being stuck.<\/p>\n

The mechanical differential lock built into the EP-700ATV Front Axle Differential Assembly is driver-selectable and works by physically coupling the differential\u2019s output elements so both front shafts are forced to turn at identical speeds. Unlike limited-slip differentials that rely on clutch-pack preload or viscous coupling to partially resist wheel spin, the EP-700ATV Front Axle Differential Assembly\u2019s mechanical lock provides a definitive, binary engagement: fully locked or fully open, with no degradation of locking performance over service life. This is a deliberate design choice for working and patrol ATV applications where electronic solenoids or clutch-based systems introduce failure modes under water ingress or temperature extremes. The unit\u2019s spline specifications \u2014 input: 21 teeth, module 1, 45\u00b0 pressure angle; output: 33 teeth, module 1, 20\u00b0 pressure angle \u2014 align with widely adopted 700cc ATV platform dimensional standards, confirming compatibility for direct front differential replacement across multiple OEM configurations. The shift coefficient of \u22120.475\/+0.24 on both input and output interfaces is consistent with OEM shaft profiles, eliminating the need for custom machining during installation.<\/p>\n<\/div>\n

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3. Five Key Product Advantages<\/h2>\n
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1 \u2014 Compact Planetary Gear Architecture<\/strong><\/p>\n

The planetary gear differential design reduces the assembled envelope by approximately 30% compared to equivalent-rated bevel-gear differentials. The 140\u2009\u00d7\u2009140\u2009\u00d7\u2009108\u2009mm footprint and 1.58\u2009kg mass enable direct fitment into tight front axle housings without structural modifications to the axle beam or suspension geometry. A lower overall assembly mass also contributes to reduced unsprung weight at the front axle, improving wheel tracking response on broken terrain and reducing shock loads transmitted to the suspension during high-speed obstacle impacts \u2014 a tangible handling benefit for both recreational and working ATV operators.<\/p>\n<\/div>\n

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2 \u2014 Integrated Mechanical Differential Lock<\/strong><\/p>\n

The on-demand mechanical diff lock mechanism<\/strong> is a binary, driver-controlled coupling that has no wear-dependent performance curve. Unlike viscous couplings or torque-sensing clutch packs, the EP-700ATV Front Axle Differential Assembly\u2019s lock engages positively and maintains full locking force regardless of operating temperature or service age. This makes it particularly suited to working ATV applications in Colombia\u2019s humid tropical agricultural zones \u2014 environments where electronic actuator reliability is a known concern and field repairs must be executable by non-specialist technicians without diagnostic equipment.<\/p>\n<\/div>\n

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3 \u2014 Precision Spline Interface \u2014 Direct OEM Replacement<\/strong><\/p>\n

Input spline (z=21, m=1, 45\u00b0 pressure angle) and output spline (z=33, m=1, 20\u00b0 pressure angle) are machined to tolerance ranges that ensure consistent engagement with OEM-matching half-shaft splines. Shift coefficients of \u22120.475\/+0.24 match the dominant 700cc ATV shaft profile standard. This dimensional consistency makes the EP-700ATV a verified front axle differential assembly replacement<\/strong> that installs directly without additional shaft modification \u2014 reducing labour time per unit and enabling workshops to handle differential swaps on a scheduled maintenance basis rather than as emergency repairs.<\/p>\n<\/div>\n

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4 \u2014 Low Operating Noise Profile<\/strong><\/p>\n

Controlled internal friction in the planetary differential architecture produces lower operational noise than comparable bevel-gear differentials at equivalent input torque levels. Planetary gear tooth contact is distributed across multiple planet gears simultaneously, spreading load and reducing the peak contact stress per tooth that generates drivetrain whine. This matters for extended-use applications \u2014 an ATV operator spending six to eight hours per day on a farm inspection route in C\u00f3rdoba or Meta department benefits meaningfully from a quieter front differential running at low-to-medium speeds over a full workday.<\/p>\n<\/div>\n

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5 \u2014 Multi-Platform Coverage & Reliable Supply<\/strong><\/p>\n

The standard module-1 spline specification and the 140\u2009\u00d7\u2009140\u2009\u00d7\u2009108\u2009mm dimensional envelope cover a wide range of 700cc ATV front axle platforms. Workshops and fleet operators in Colombia, Peru, Ecuador, and Mexico who maintain mixed-brand ATV inventories can stock a single EP-700ATV SKU as the default front differential assembly<\/strong> replacement item across multiple vehicle types. Each unit ships with full dimensional documentation and material traceability records, satisfying the incoming inspection requirements of quality-managed workshop operations and larger agricultural enterprise fleets.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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4. Working Principle \u2014 ATV Front Axle Differential Assembly<\/h2>\n

Differential Operation (Unlocked Mode)<\/h3>\n

Drive torque enters the EP-700ATV Front Axle Differential Assembly through the input internal spline (21 teeth, module 1, 45\u00b0 pressure angle). The input shaft connects to the planetary carrier, which holds the planet gears on their respective trunnion shafts. The ring gear is fixed within the housing. As the carrier rotates, the planet gears mesh with both the central sun gear and the fixed ring gear. When both front wheels encounter equal resistance \u2014 straight-ahead driving on consistent terrain \u2014 the planet gears do not rotate on their own axes; the entire planetary set rotates as a locked unit, delivering equal torque to both output shafts via the 33-tooth internal splines on each side. When one wheel loses traction and begins to spin faster than the other, the planet gears begin to self-rotate, accommodating the speed differential. The output that spins faster (the slipping wheel) receives less torque; the stationary or slower output retains more. This is the fundamental function of the front axle differential<\/em> \u2014 to permit speed differences between wheels while maintaining torque distribution through the drivetrain.<\/p>\n

The planetary design introduces a defined level of internal friction through the planet gear shaft-to-carrier bearing contacts and the gear mesh geometry itself. This friction acts as a passive torque-biasing mechanism: before wheel slip becomes pronounced, the higher-friction path still receives some drive torque. In practical off-road use, this provides a modest traction advantage over a conventional open differential with negligible internal resistance \u2014 the EP-700ATV Front Axle Differential Assembly does not spin up one wheel completely before the other stalls.<\/p>\n

Differential Lock Engagement<\/h3>\n

When the operator engages the differential lock (typically via a dash-mounted switch or mechanical lever linked to the actuating collar), a locking collar inside the differential housing translates axially and positively couples both output shaft elements together. With the lock engaged, both output shafts are compelled to rotate at identical angular velocity regardless of individual wheel traction \u2014 this is the mechanistic answer to what a diff lock on a 4×4<\/em> does. The locked front axle differential delivers 50\/50 torque split to both wheels unconditionally, ensuring that even if one wheel is completely airborne or in frictionless mud, the full engine torque can still be directed to the wheel that has ground contact.<\/p>\n

\u0ba4\u0bbf difference between differential lock and inter-axle differential lock<\/em> is worth clarifying for users of 4WD ATVs: the EP-700ATV Front Axle Differential Assembly\u2019s diff lock operates within the front axle differential carrier only \u2014 it locks the two front wheels relative to each other. An inter-axle differential lock (fitted in the transfer case or centre differential of some multi-axle 4WD vehicles) locks the front and rear propshafts relative to each other. Both systems address traction loss, but at different drivetrain levels. The EP-700ATV Front Axle Differential Assembly provides front axle diff locking; if the vehicle also has a locking rear differential, operating both locks simultaneously provides maximum all-wheel traction \u2014 the configuration most ATV operators in Colombia\u2019s highland terrain rely on in the most severe conditions.<\/p>\n

Understanding the difference between axle lock and diff lock<\/em> is also relevant: an axle lock (or manual locking hub) fixes the outer wheel hub to the axle shaft, engaging drive to that wheel. A diff lock operates inside the differential housing on the output shaft elements. The EP-700ATV Front Axle Differential Assembly\u2019s integrated lock is an internal diff lock \u2014 it does not require separate hub-locking actions and provides traction management from within the drivetrain in a single operation.<\/p>\n<\/div>\n

\"\u0ba4\u0bbe\u0ba9\u0bbf\u0baf\u0b99\u0bcd\u0b95\u0bbf<\/p>\n

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5. Materials & Construction<\/h2>\n

Planetary Gear Set (Sun, Planet, Ring Gears):<\/strong> Manufactured from low-alloy carburising steel \u2014 typically 20CrMnTi or equivalent grade per GB\/T 3480 \/ ISO 6336 \u2014 processed through controlled gas carburising followed by oil quench hardening. The resulting case depth of 0.4\u20130.8\u2009mm at HRC\u200958\u201362 surface hardness delivers a gear tooth contact surface capable of withstanding the Hertzian contact stresses generated during high-torque differential action under full-lock disengagement. The core hardness is maintained at HRC\u200932\u201338, providing the toughness needed to absorb shock loads from sudden surface transitions without brittle fracture.<\/p>\n

Differential Housing and Carrier Body:<\/strong> Cast from nodular ductile iron (GGG50 \/ QT500-7 equivalent), selected for its combination of vibration-damping characteristics, impact resistance, and post-casting machinability. The ductile iron microstructure \u2014 graphite nodules in a ferritic-pearlitic matrix \u2014 offers significantly greater toughness and elongation at failure than grey cast iron, an important property given the shock and impact loads a front axle differential carrier absorbs during aggressive articulation over rocks and root crossings. Housing walls are CNC-machined post-casting to ensure bearing seat bore concentricity within 0.01\u2009mm, and mating face flatness within 0.02\u2009mm \u2014 both critical to oil-tight assembly and bearing alignment.<\/p>\n

Input and Output Spline Shafts:<\/strong> Medium-carbon alloy steel (40Cr or 42CrMo equivalents per GB\/T 3077), induction surface-hardened at the spline contact zones to HRC\u200952\u201358. This surface hardening resists the fretting wear that occurs at the shaft-to-hub spline interface under torsional loading with slight axial misalignment \u2014 a failure mode particularly common in ATVs that see sustained high-torque low-speed pulling cycles. The tooth-form geometry is machined to maintain the \u22120.475\/+0.24 shift coefficient for both input and output sides, confirming dimensional compliance with OEM shaft profiles.<\/p>\n

Axle Shaft Seals:<\/strong> Fluoroelastomer (FKM\/Viton) lip seal elements on both output shaft bores, rated for continuous operation from \u221240\u2009\u00b0C to +200\u2009\u00b0C. FKM compound is specified over the more common NBR (nitrile) because of its superior resistance to GL-5 gear oil additives \u2014 specifically the sulphur-phosphorus extreme-pressure compounds that degrade NBR elastomers and accelerate lip wear, contributing to the front axle differential leaking<\/em> failures that are among the most common service complaints on working ATVs. The seal lip geometry incorporates a secondary dust exclusion lip to prevent ingress of the abrasive fine particles ubiquitous in Colombian dry-season field conditions.<\/p>\n<\/div>\n

\"\u0ba4\u0bbe\u0ba9\u0bbf\u0baf\u0b99\u0bcd\u0b95\u0bbf<\/p>\n

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6. \u0baa\u0baf\u0ba9\u0bcd\u0baa\u0bbe\u0b9f\u0bcd\u0b9f\u0bc1\u0b9a\u0bcd \u0b9a\u0bc2\u0bb4\u0bcd\u0ba8\u0bbf\u0bb2\u0bc8\u0b95\u0bb3\u0bcd<\/h2>\n
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Off-Road Recreational ATV \u2014 Colombia Mountain Terrain<\/strong><\/p>\n

Riders navigating the Cordillera Central and Eastern Cordillera mountain trail networks rely on their ATV\u2019s front differential 4×4<\/strong> system to manage traction on wet clay, loose shale, and mossy rock crossings. The EP-700ATV Front Axle Differential Assembly\u2019s mechanical diff lock provides the kind of instant, reliable traction response that electronic traction control systems cannot match on steep descents where wheel-speed sensor data lags actual slip events. With the lock engaged, both front wheels pull simultaneously, and the rider regains directional control that would otherwise be lost to a spinning inner wheel on a steep camber traverse.<\/p>\n<\/div>\n

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Agricultural & Rural Utility \u2014 Crop Inspection and Livestock Management<\/strong><\/p>\n

700cc ATVs are widely deployed across Colombia\u2019s Llanos Orientales, Cauca Valley, and Caribbean coastal agricultural zones for crop inspection, fertiliser distribution, and livestock monitoring work. These applications demand a front axle assy<\/strong> that can handle heavy payload loading over saturated ground without differential failure from sustained high-torque low-speed cycles. The EP-700ATV Front Axle Differential Assembly\u2019s defined internal friction provides passive torque biasing that resists single-wheel spin during these field traversals, while the lockable diff delivers the pulling force needed to extract the vehicle from deep-irrigation channel edges where a standard open differential would strand the operator.<\/p>\n<\/div>\n

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Security, Patrol & Emergency Response in Remote Regions<\/strong><\/p>\n

Public security agencies, rural fire brigades, and private security operations across Colombia\u2019s Orinoqu\u00eda and Amazon frontier regions operate ATV fleets in areas where vehicle recovery is costly and delayed. The mechanical-lock front differential assembly<\/strong> on the EP-700ATV Front Axle Differential Assembly is a deliberate design advantage in these contexts: no electronic actuators, no solenoid valves, no CAN-bus integration \u2014 just a mechanical collar that engages when the rider selects it and holds engagement regardless of water ingress, voltage drop, or sensor faults. Field-maintainable design ensures that any trained technician can service the unit without specialised diagnostic tools.<\/p>\n<\/div>\n

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Workshop Service & Fleet Maintenance \u2014 Multi-Brand ATV Fleets<\/strong><\/p>\n

ATV workshops servicing mixed-brand 700cc fleets across Colombia, Ecuador, and Peru stock the EP-700ATV as a universal front axle differential carrier assembly<\/strong> replacement item. When front axle differential lock symptoms<\/em> appear \u2014 engagement noise, lock slippage, or binding on release \u2014 or when the housing shows seal leak failure patterns (a common front axle differential leaking<\/em> scenario after two to three seasons of hard field use), the EP-700ATV Front Axle Differential Assembly provides a same-day turnaround repair path. The well-documented spline parameters allow technicians to confirm fitment from a vehicle spec sheet check before disassembly \u2014 avoiding the wasted time of partial dismantling and reassembly for an incompatible unit.<\/p>\n<\/div>\n

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Forestry, Environmental Monitoring & Infrastructure Inspection<\/strong><\/p>\n

Colombia\u2019s forestry and water-authority teams use ATVs to patrol reforestation zones in the high-altitude p\u00e1ramo and cloud forest ecosystems of the Andes. The difference between front axle and rear axle<\/em> load distribution changes significantly when ascending steep gradients \u2014 front traction becomes the limiting factor. Having a lockable front drive axle differential<\/strong> on the EP-700ATV Front Axle Differential Assembly ensures both front wheels contribute pulling force during the ascent, preventing the left-right torque imbalance that would otherwise cause the vehicle to yaw off the single-track forest path. The assembly\u2019s low noise profile also reduces disturbance in wildlife-sensitive monitoring zones.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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7. Regulatory Compliance & Legal Context<\/h2>\n

Colombia \u2014 Ministerio de Transporte & ICONTEC Standards<\/h3>\n

In Colombia, the regulatory framework governing vehicle mechanical components \u2014 including front axle differential assemblies for ATVs \u2014 falls under Decreto \u00danico Reglamentario del Sector Transporte (Decreto 1079 de 2015)<\/strong>, which consolidates transportation sector regulations administered by the Ministerio de Transporte. ATV drivetrain components affecting vehicle safety and drivability must comply with the technical equivalence requirements established through vehicle homologation, overseen in technical matters by INVIAS<\/strong> (Instituto Nacional de V\u00edas) and ICONTEC<\/strong> (Instituto Colombiano de Normas T\u00e9cnicas y Certificaci\u00f3n). ICONTEC administers the NTC (Normas T\u00e9cnicas Colombianas) series for mechanical vehicle components. Importers and maintenance workshops replacing drivetrain components such as the front axle differential assembly<\/strong> should retain dimensional compliance documentation \u2014 specifically spline specification sheets and material certificates \u2014 to demonstrate technical equivalence with the vehicle\u2019s original homologation dossier. The Superintendencia de Industria y Comercio (SIC) also maintains oversight of product safety standards under Ley 1480 de 2011 (Estatuto del Consumidor) for imported mechanical components.<\/p>\n

European Union \u2014 Regulation (EU) 168\/2013 & ECE Standards<\/h3>\n

ATVs sold into EU markets fall under Regulation (EU) No 168\/2013<\/strong> on the approval and market surveillance of two- and three-wheel vehicles and quadricycles (L-category vehicles). Front axle drivetrain components must comply with the functional requirements of the associated delegated and implementing regulations, including Commission Delegated Regulation (EU) 44\/2014<\/strong> on vehicle construction and general requirements. UN\/ECE Regulation No. 13 (Uniform Provisions concerning Braking) has indirect relevance to axle load-bearing capacity. Replacement parts for EU-registered ATVs should be supplied with CE marking declarations where required under the relevant machinery or component directives, and traceability documentation to the appropriate product standard.<\/p>\n

United States \u2014 CPSC Regulations & SAE\/ANSI Standards<\/h3>\n

In the United States, ATV safety is regulated by the Consumer Product Safety Commission (CPSC)<\/strong> under 16 CFR Part 1420<\/strong>, which establishes performance and labelling requirements for ATVs sold in the US market. ANSI\/SVIA 1<\/strong> (American National Standard for Four Wheel All-Terrain Vehicles) provides technical performance standards for ATV drivetrain systems including differential assemblies. SAE technical standards \u2014 particularly SAE J2826<\/strong> and related ATV performance standards \u2014 specify test methods relevant to axle and drivetrain component validation for the North American market. Replacement front differential components for US-market ATVs should be verifiable against OEM parts specifications and SAE material-grade requirements.<\/p>\n

Brazil \u2014 CONTRAN, DENATRAN & ABNT NBR Standards<\/h3>\n

Brazil\u2019s National Traffic Council (CONTRAN<\/strong>) and the Secretariat for Road Traffic (SENATRAN<\/strong>) regulate vehicle components under Resolu\u00e7\u00f5es that establish minimum technical standards for wheeled vehicles and their systems. ABNT NBR<\/strong> (Associa\u00e7\u00e3o Brasileira de Normas T\u00e9cnicas) standards govern mechanical vehicle component specifications in Brazil. Imported mechanical components \u2014 including ATV drivetrain assemblies \u2014 may require INMETRO<\/strong> (Instituto Nacional de Metrologia) certification depending on product classification. Colombian distributors supplying ATV parts into the Brazilian market should verify current INMETRO compulsory product certification requirements for the relevant HS classification of the front axle differential assembly.<\/p>\n

Mexico \u2014 NOM (Normas Oficiales Mexicanas)<\/h3>\n

Mexico\u2019s Secretar\u00eda de Econom\u00eda and Secretar\u00eda de Comunicaciones y Transportes (SCT) administer Normas Oficiales Mexicanas (NOM)<\/strong> relevant to vehicle mechanical components. NOM-086-SCT2<\/strong> and related transport sector NOMs establish minimum safety and performance requirements for vehicle components. ATV drivetrain replacement parts for the Mexican market should be verified against applicable NOM designations and labelling requirements. PROFECO<\/strong> (Procuradur\u00eda Federal del Consumidor) additionally enforces product safety standards for imported mechanical components at the retail and distribution level.<\/p>\n<\/div>\n

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8. \u0b8e\u0b99\u0bcd\u0b95\u0bb3\u0bc8\u0baa\u0bcd \u0baa\u0bb1\u0bcd\u0bb1\u0bbf<\/h2>\n

We are a specialist manufacturer and global supplier of precision front axle assemblies, differential carrier assemblies, and drivetrain components for all-terrain vehicles, utility vehicles, and light commercial platforms. Our engineering capability covers the full spectrum of ATV front axle differential assembly types \u2014 standard open differentials, mechanical locking differentials, and limited-slip configurations \u2014 for both OEM supply programmes and the global replacement parts market. Production is supported by CNC gear hobbing centres, precision spline broaching machines, coordinate measuring machines (CMM) for dimensional verification, and dedicated gear-mesh noise testing rigs that evaluate each production lot before release.<\/p>\n

Our quality management system operates under \u0b90\u0b8e\u0bb8\u0bcd\u0b93 9001<\/strong> certification, with documented process controls covering raw material incoming inspection, in-process dimensional verification, heat treatment batch recording, proof-load tensile testing, and seal-integrity pressure checks.<\/p>\n

\u0baa\u0b9f\u0bcd\u0b9f\u0bb1\u0bc8<\/h3>\n
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\"Manufacturing
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9. Related Products \u2014 Complete Axle System Supply<\/h2>\n

The EP-700ATV front axle differential assembly<\/strong> is engineered as part of a complete front-to-rear drivetrain supply programme. We also supply the following directly compatible axle system components, giving procurement teams and workshops a single-source advantage for full system builds, routine maintenance, and emergency fleet repair scenarios.<\/p>\n

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Rear Axle Assembly \u2014 Wheel Bolts<\/strong><\/p>\n

Wheel bolts are a safety-critical interface component connecting the axle hub to the wheel rim. When replacing a front and rear axle differential<\/strong> assembly, the wheel fastener specification \u2014 thread pitch, shank length, flange diameter, and torque rating \u2014 must match the axle hub and wheel rim mating geometry. Incorrect or worn wheel bolts are among the leading causes of in-service wheel separation. Sourcing matched wheel bolts alongside the EP-700ATV differential assembly ensures the complete front axle interface is renewed to specification in a single service event. We supply wheel bolt sets across the thread specifications and shank configurations used by major 700cc ATV platforms serviced in Colombia, Peru, Ecuador, and the wider Latin American market.<\/p>\n

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Agricultural and utility ATV operators across Colombia frequently use their vehicles to tow trailers for crop transport, equipment supply, and livestock management. A correctly matched trailer axle beam and spindle \u2014 rated for the actual load and track width combination of the trailer \u2014 prevents overloading of the ATV\u2019s own front axle differential carrier<\/strong> through tongue weight transfer during uphill loaded sections. Our trailer axle beam and spindle supply covers load ratings from light ATV single-axle trailers up to medium-duty tandem-axle agricultural trailers, with standard bearing specifications compatible with widely available service bearings in Colombian and Peruvian agricultural supply chains. System compatibility between the ATV drivetrain and trailer axle is a core value of our one-stop supply approach.<\/p>\n

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\nQ1. What is a front axle differential assembly and how does it work on a 700cc ATV?<\/summary>\n
\u0b92\u0bb0\u0bc1 front axle differential assembly<\/strong> is a geared mechanism housed inside the front axle carrier that distributes engine drive torque to the left and right front wheel output shafts while permitting them to rotate at different speeds during cornering. On the EP-700ATV Front Axle Differential Assembly, this is achieved through a compact planetary gear set: the planet gears rotate on their axes to accommodate speed differences between the two outputs when one wheel turns faster than the other. This allows clean cornering without tyre scrub on hard surfaces and maintains drive to both front wheels in standard open-differential operation. The function of the front axle differential<\/em> is therefore both kinematic (allowing speed differences) and torque-transmitting (keeping both front wheels in the drive circuit simultaneously).<\/div>\n<\/details>\n
\nQ2. What happens when the front differential is bad, and what are the common symptoms of front axle differential failure?<\/summary>\n
Common front axle differential lock symptoms<\/em> and general differential degradation signs include: a grinding, whining, or clunking noise from the front axle area that changes with vehicle speed or steering angle; difficulty engaging or disengaging the diff lock (binding or incomplete release); visible oil around the axle shaft seal areas \u2014 indicating a front axle differential leaking<\/em> condition; and, in advanced cases, notchy or stiff steering as worn differential components create mechanical drag in the output shafts. Any combination of these symptoms warrants disassembly and inspection. If the planetary gear set shows pitting or spalling, or if the housing is cracked, complete assembly replacement \u2014 with the EP-700ATV Front Axle Differential Assembly \u2014 is the preferred resolution over piecemeal repair of a compromised unit.<\/div>\n<\/details>\n
\nQ3. What is the difference between a differential lock and an inter-axle differential lock on a 4WD ATV or off-road vehicle?<\/summary>\n
\u0ba4\u0bbf difference between differential lock and inter-axle differential lock<\/em> comes down to where in the drivetrain the locking action takes place. A differential lock<\/strong> \u2014 as fitted on the EP-700ATV front axle \u2014 locks the two output shafts within a single axle differential (either front or rear), forcing both wheels on that axle to rotate at the same speed. An inter-axle differential lock<\/strong> operates in the transfer case or centre differential, coupling the front and rear propshafts to each other, preventing torque from migrating entirely to one axle end over the other. Both improve traction, but a front diff lock addresses traction imbalance between the two front wheels, while an inter-axle diff lock addresses the front\/rear axle torque split. Understanding this difference between differential and axle<\/em> locking systems helps operators select the right engagement combination for a given terrain challenge.<\/div>\n<\/details>\n
\nQ4. Which 700cc ATV platforms in Colombia and Peru are compatible with the EP-700ATV front differential assembly?<\/summary>\n
The EP-700ATV Front Axle Differential Assembly is designed around the dominant 700cc ATV front axle spline standard: input internal spline (z=21, m=1, 45\u00b0 pressure angle, x=\u22120.475\/+0.24) and output internal spline (z=33, m=1, 20\u00b0 pressure angle, x=\u22120.475\/+0.24). This configuration covers a broad range of 700cc ATV front axle assemblies commonly operated in Colombia, Peru, Ecuador, and Mexico. Before ordering, we recommend verifying the input and output spline tooth counts on your existing shaft against these parameters \u2014 we can supply dimensional drawings and spline gauging procedures on request. Contact our technical team with your vehicle make, model year, and current differential model number for a confirmed compatibility assessment prior to purchase.<\/div>\n<\/details>\n
\nQ5. What type of gear oil should be used in the EP-700ATV front axle differential, and how frequently should it be changed?<\/summary>\n
The EP-700ATV front axle differential assembly<\/strong> is designed for GL-5 grade gear lubricant, typically SAE 80W-90 for Colombia\u2019s warmer lowland and coastal agricultural zones, or SAE 75W-90 synthetic\/semi-synthetic for Andean high-altitude operations where cold-start viscosity is a concern at pre-dawn start-up temperatures. Oil change intervals depend on use intensity: every 50 operating hours for aggressive off-road use with frequent water crossings, and every 150\u2013200 hours for lower-intensity utility or patrol applications. At each oil change, inspect the drained oil for metallic particles \u2014 fine grey sludge is normal gear wear; visible metal flakes or chips indicate accelerating internal damage requiring differential inspection. Always replace the axle shaft seals (the primary front axle differential seal<\/em> points) at every oil change as a cost-effective preventive measure.<\/div>\n<\/details>\n
\nQ6. What is the difference between axle lock and diff lock on a 4×4 ATV, and which system does the EP-700ATV Front Axle Differential Assembly use?<\/summary>\n
\u0ba4\u0bbf axle lock vs diff lock<\/em> distinction is important for ATV operators in Colombia and Peru who ask what is a diff lock on a 4×4<\/em> vehicle. An axle lock<\/strong> (manual locking hub) engages the outer wheel hub to the axle shaft, ensuring the wheel rotates with the shaft at all times \u2014 commonly used to connect or disconnect front-wheel drive. A differential lock<\/strong> \u2014 which is what the EP-700ATV Front Axle Differential Assembly provides \u2014 works inside the differential carrier by mechanically coupling both output shaft elements so neither can rotate relative to the other. The EP-700ATV Front Axle Differential Assembly\u2019s internal diff lock provides traction management without requiring separate hub-locking action, operating from within the drivetrain in a single driver-initiated engagement. The diff lock symbol<\/em> on the ATV dash (typically a rear-axle schematic with a lock icon) will indicate this lock is engaged.<\/div>\n<\/details>\n
\nQ7. What other drivetrain components should be inspected or replaced alongside the front axle differential assembly during a major service?<\/summary>\n
When carrying out a front axle differential replacement<\/strong>, experienced technicians in Colombian and Peruvian ATV service workshops typically inspect and address: (1) front propshaft universal joints or CV joints \u2014 worn joints generate the vibration that accelerates differential bearing wear; (2) front axle shaft oil seals at both output bores \u2014 the front axle differential seal<\/em> points that most commonly develop leaks in service; (3) front wheel bearings \u2014 compromised bearings allow axial shaft movement that overloads the differential output seal lips; (4) the differential fill and drain plugs, replacing if galled; and (5) the locking collar and actuating mechanism \u2014 inspecting for wear on the collar splines and verifying clean engagement and release. Replacing all these items together avoids the scenario of a new differential fitted next to failing seals or worn CV joints that require axle disassembly again within months.<\/div>\n<\/details>\n<\/div>\n

\u0baa\u0ba4\u0bbf\u0baa\u0bcd\u0baa\u0bbe\u0b9a\u0bbf\u0bb0\u0bbf\u0baf\u0bb0\u0bcd: PXY<\/p>","protected":false},"excerpt":{"rendered":"

The EP-700ATV is a compact-type front axle differential assembly<\/strong> using a planetary gear arrangement to distribute drive torque between both front wheel output shafts, allowing independent speed variation during cornering while maintaining a defined level of internal friction bias.<\/p>\n

The integrated mechanical differential lock mechanism<\/strong> couples both output shafts when engaged, delivering equal rotational speed to both front wheels and maximising traction on loose, muddy, or uneven terrain typical across Colombia\u2019s Andean, Pacific lowland, and Llanos regions.<\/p>\n

At 1.58 kg and 140\u2009\u00d7\u2009140\u2009\u00d7\u2009108\u2009mm, the unit serves as a verified direct-replacement front axle differential assembly replacement<\/strong> for a broad range of 700cc ATV platforms, with spline interfaces conforming to standard OEM shaft specifications.<\/p>","protected":false},"featured_media":234,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[19],"product_tag":[],"class_list":{"0":"post-235","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-front-axle-assembly","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/product\/235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/media\/234"}],"wp:attachment":[{"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/media?parent=235"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/product_brand?post=235"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/product_cat?post=235"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/automatictransmissionpart.com\/ta\/wp-json\/wp\/v2\/product_tag?post=235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}