The old transmission used a three-point housing, while the new transmission adopts a four-point housing. The main differences are reflected in the following two aspects.
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Gearbox Housing | Material / Process | Conventional material, three-point mounting process with triangular layout fixation | Conventional material, four-point mounting process with four evenly distributed points forming a planar structure |
Durability | Prone to vibration and displacement under complex working conditions; mounting points liable to loosen/damage; overall service life highly affected by load | Significant reduction in vibration and displacement; load on single point reduced via force distribution; extended service life |
Features | Compact structure with few mounting points; suitable for small and medium-sized models in low-torque scenarios | Full all-directional fit with chassis for more stable support; suitable for large, high-performance models in high-torque scenarios |
Operating Characteristics | Force concentrated on 3 mounting points with low load capacity; meets basic operational needs under normal working conditions but poor stability under complex conditions | Force evenly distributed on 4 mounting points with high load capacity; stable power output under complex working conditions with strong adaptability to all working scenarios |
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Torque Converter(Steel Wheel) | Material / Process | Ordinary steel with simple alloy composition (Fe + a small amount of C), conventional processing technology | TZ special alloy steel with Cr, Mo and Ti alloying elements added, high-precision manufacturing process |
Durability | Hardness HRC20-30 with limited strength; prone to deformation and tooth surface wear, service life of approximately 10,000-15,000 km | Hardness HRC35-45 with higher strength; deformation and wear resistant, service life extended by 50%-100% (20,000-30,000 km) |
Features | Low processing difficulty and low cost; only meets basic power transmission requirements | Performance optimized by alloying elements with high manufacturing precision; suitable for high-load and high-speed working conditions |
Operating Characteristics | Transmission efficiency decreases gradually with use/load; fatigue cracks easily form at tooth roots under alternating stress; poor fatigue resistance | Maintains high transmission efficiency throughout the whole life cycle with tight gear meshing; excellent fatigue resistance, capable of resisting crack formation under alternating stress |
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Control Valve | Material / Process | Conventional valve stem material, no surface treatment, no protective accessories | Conventional valve stem material with chrome-plated surface, equipped with a rubber protective cover |
Durability | No protective layer, prone to corrosion and rust; valve stem liable to jamming, which impairs the overall service life | Dual protection of chrome plating + protective cover, corrosion and scratch resistant, effectively extending the service life of the valve stem and valve body |
Features | Simple manufacturing process and low cost; rough surface with no additional texture | Chrome plating process improves surface precision with an exquisite texture; smooth surface, easy to clean and resistant to contamination |
Operating Characteristics | Prone to failure in humid/corrosive environments, compromising oil pressure control accuracy; no additional protection, with limited applicable scenarios | Resistant to moisture and chemical erosion, maintaining stable oil pressure control even in harsh environments; suitable for all scenarios with strong protective performance |
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Bearing | Material / Process | Ordinary bearing steel with simple alloy composition (Fe, C + a small amount of Cr/Mn), conventional processing standards | Renben S&F special bearing steel with Mo and V alloying elements added, complying with international and enterprise high-precision processing standards |
Durability | Limited hardness and toughness, prone to fatigue wear/deformation under high load, low limit rotational speed | Excellent comprehensive performance, high rated dynamic/static load, capable of withstanding high radial/axial loads, suitable for higher rotational speeds |
Features | No exclusive brand, simple quality control, low cost; large processing error with low precision | A brand under Renben Group with strict full-process quality control; high processing precision, good fit between inner/outer rings and rolling elements |
Operating Characteristics | High internal friction and poor heat dissipation at high speed, prone to overheating; large vibration and noise during operation, impairing transmission stability | Advanced lubrication + optimized structure, low friction coefficient and good heat dissipation with low energy loss; low vibration and noise during operation, enabling more stable transmission |
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Bearing | Material / Process | Ordinary bearing steel with simple alloy composition (Fe, C + a small amount of Cr/Mn), conventional processing standards | Renben S&F special bearing steel with Mo and V alloying elements added, complying with international and enterprise high-precision processing standards |
Durability | Limited hardness and toughness, prone to fatigue wear/deformation under high load, low limit rotational speed | Excellent comprehensive performance, high rated dynamic/static load, capable of withstanding high radial/axial loads, suitable for higher rotational speeds |
Features | No exclusive brand, simple quality control, low cost; large processing error with low precision | A brand under Renben Group with strict full-process quality control; high processing precision, good fit between inner/outer rings and rolling elements |
Operating Characteristics | High internal friction and poor heat dissipation at high speed, prone to overheating; large vibration and noise during operation, impairing transmission stability | Advanced lubrication + optimized structure, low friction coefficient and good heat dissipation with low energy loss; low vibration and noise during operation, enabling more stable transmission |
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Pump Sleeve | Material / Process | Conventional alloy/carbon steel, no quenching and tempering heat treatment, original material structure | Conventional alloy/carbon steel, treated with quenching and tempering heat treatment, grain refinement process |
Durability | Poor balance of strength and toughness, prone to deformation and damage; uneven hardness distribution, local rapid wear, short fatigue life | Excellent balance of strength and toughness, resistant to deformation and damage; uniform hardness distribution, significantly improved wear and fatigue resistance |
Features | Simple process, no additional heat treatment required, low cost; no material performance optimization, only meeting basic application requirements | Heat treatment enhances the core performance of materials with increased process complexity; a dense structure forms on the surface, preventing abrasive particle embedding/scratching |
Operating Characteristics | Prone to fatigue cracking under high oil pressure/alternating stress, easily causing oil pump failure; rapid frictional wear with the rotor | Capable of withstanding high oil pressure and alternating stress, effectively preventing crack formation; slow frictional wear with the rotor, enabling more stable oil pump operation |
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Clutch Friction Disc | Material / Process | Paper-based material (fiber + resin), conventional pressing process | Copper-based material (metal matrix + wear-resistant additives), high-precision pressing process |
Durability | Limited heat resistance (< 150℃), resin decomposition and fiber carbonization at high temperatures; service life of 5,000-10,000 km (2,000-5,000 km under severe working conditions) | Excellent heat resistance (300-500℃), high thermal stability of copper matrix; service life of more than 10,000-15,000 km, with significant advantages in heavy-duty scenarios |
Features | Low material cost and simple processing; conventional friction performance, suitable for light-load working conditions | Metal matrix improves wear/heat resistance with added wear-resistant additives; suitable for high-load and frequent gear shifting working conditions, with low maintenance frequency |
Operating Characteristics | Reduced wear resistance under high load/frequent gear shifting, prone to overheating failure; slippage easily occurs in power transmission with reduced efficiency | Capable of withstanding frequent friction under high load and high speed, no overheating failure; tight gear meshing, no slippage in power transmission with stable efficiency |
Component Name | Comparison Dimension | Before Upgrade | After Upgrade |
Gear Shift Lever | Material / Process | Conventional metal material, no surface protection treatment, directly processed and formed | Conventional metal material, surface chrome plating process with precision polishing treatment |
Durability | No protective layer, prone to corrosion and rust from sweat/humidity; frequent friction easily causes scratches and wear, impairing appearance/ usability | Chemically stable chrome plating layer, corrosion and wear resistant; minor damage still protects the underlying metal, extending the overall service life |
Features | Simple process with low cost; rough surface and average touch feel | Chrome plating improves surface smoothness for a comfortable touch; bright appearance with enhanced texture |
Operating Characteristics | Prone to rust within months in coastal/humid environments, causing gear shifting jamming; surface wear impairs shifting feel and results in poor operating experience | No rust risk in harsh environments for smooth gear shifting; no obvious wear from frequent gear shifting, maintaining a good operating experience for the long term |
