HOWO Countershaft Drive Gear AZ2210030036/7 – Transmission Part
When maintaining the durability of heavy-duty trucks, the countershaft drive gear (OEM: AZ2210030036/7) plays a critical role in transmission performance. Specially engineered for HOWO commercial vehicles, this precision component ensures optimal torque transfer between shafts while reducing vibrational stress. Manufactured to original equipment specifications, our countershaft gear directly replaces part number AZ2210030036/7 without requiring modifications. The dual bearing surfaces are induction-hardened using advanced heat-treatment processes, providing exceptional resistance to pitting and micro-spalling even under continuous heavy-load operations characteristic of HOWO mining and logistics applications.
With helical teeth cut at 31-degree angles using CNC hobbing machines, this AZ2210030036/7 countershaft gear achieves smoother meshing action compared to straight-cut alternatives. The optimized tooth profile minimizes contact stress distribution across the flank surfaces, significantly extending service intervals by 40% according to accelerated wear testing. All gear teeth undergo shot-peening refinement after machining to eliminate microscopic stress points that could initiate fatigue cracks. This premium countershaft component weighs approximately 18.7kg with dimensional accuracy within 0.01mm tolerance, ensuring direct interchangeability with factory-installed transmission gear sets in SINOTRUK HOWO A7, T7, and T5G series.
The metallurgical composition features modified SAE 8620 alloy steel with controlled chromium and molybdenum concentrations enhancing core toughness while maintaining surface hardness at 58-62 HRC. This specific material formulation prevents brittle fracture during cold-start conditions frequently encountered in Eurasian mining operations where HOWO dump trucks dominate markets. Each countershaft gear undergoes magnetic particle inspection validating structural integrity before phosphating surface treatment which provides superior corrosion resistance compared to standard black oxide finishes. The AZ2210030036/7 model incorporates chamfered oil channels along the bore circumference that improve splash lubrication efficiency by 27% according to transmission dyno tests.
Installation procedures for this gear require matching with compatible main shaft and cluster gear assemblies manufactured to corresponding OEM specifications. Technical bulletins recommend verifying backlash clearance between 0.08mm-0.13mm when implementing replacement units like AZ2210030036/7 to prevent premature synchromesh deterioration. The surface ground pilot diameter ensures concentric running with oil-seal surfaces preventing lube contamination from external debris. For HOWO T-series tractors accumulating over 500,000km, preventive replacement of countershaft gears during clutch service intervals effectively prevents catastrophic transmission failure during steep gradient hauling operations.
Reverse-engineered from factory components, our replacement countershaft gear for AZ2210030036/7 undergoes coordinate measuring machine validation against 28 critical parameters including base circle concentricity and cumulative pitch deviation. The production process incorporates SPC monitoring across forging, normalizing, and carburizing stages to maintain metallurgical consistency batch after batch. For fleet managers operating HOWO concrete mixers in tropical climates, the proprietary anti-fretting coating applied to spline teeth reduces micropitting corrosion that commonly plagues standard components in high-humidity environments. This specialized countershaft gear ships with ISO-compliant documentation including material certification and hardness test reports for warranty validation purposes.
When sourcing transmission components for your HOWO fleet, genuine matching parts like countershaft drive gear AZ2210030036/7 prevent compatibility issues caused by aftermarket dimensional variances. Our precision manufacturing replicates the original helical lead angle tolerance within ¡À0.003 degrees per revolution maintaining factory-specified NVH characteristics. End-user benefits include reduced maintenance downtime and elimination of secondary damage to mating components that frequently occurs with inferior replacement gears. Field reports from mining operations confirm these components withstand over 30,000 operating hours when installed with compatible ZF or FAST Gear transmission systems specified for HOWO heavy-duty applications across Siberia and Southeast Asia.
The thermal stability of this countershaft gear prevents dimensional distortion under sustained high-torque conditions encountered in HOWO dump trucks transporting iron ore. Computational Fluid Dynamics analysis optimized the churning loss geometry between housing and rotating assembly where the AZ2210030036/7 variant demonstrates 15% lower parasitic drag than economy alternatives. During accelerated endurance testing simulating 1.5 million kilometers, the specialized shot-peened tooth roots maintained integrity while comparative samples exhibited fatigue fractures at 850,000km equivalence. For transmission rebuild specialists, this component includes alignment markings facilitating correct positioning relative to thrust washers and caged needle bearings during assembly procedures documented in official HOWO service manuals.
Counterfeit parts flooding secondary markets often lack the sub-zero tempering process critical for component durability in Arctic HOWO operations. Our authentic AZ2210030036/7 gear undergoes -70¡ãC cryogenic stabilization disrupting retained austenite transformation that contributes to premature micropitting. The surface texture maintains Ra 0.8¦Ìm finish improving oil film retention along contact surfaces. Technical support teams provide specific break-in recommendations including mineral oil use during initial 5,000km when installing this countershaft gear. Bulk purchasing options for mining fleets operating HOWO T-series trucks include customized packaging for remote area transport without component deterioration during extended shipment durations.
Material certification documents accompanying each countershaft gear AZ2210030036/7 validate traceable alloy composition matching original equipment specifications. Ultrasonic testing protocols verify internal soundness exceeding DIN EN 10228 standards with particular attention to potential forging voids near the keyway slot. Deployment records from logistics companies indicate installation intervals exceeding 3 years under severe-duty conditions where inferior components typically require replacement within 18 months. The precisely manufactured chamfers along gear edges prevent shaving metal particles during mesh engagement that commonly contaminates transmission fluid in HOWO mixer trucks operating under continuous cyclic loading patterns.
Synchromesh compatibility remains uncompromised with this countershaft gear due to controlled tooth thickness variations maintained within 0.005mm tolerance bands. Special honing creates the micro-crosshatch pattern necessary for proper lubrication film formation between sliding surfaces during gear engagement. Technical analysis indicates the optimized root fillet radius reduces stress concentration by 60% compared to aftermarket components often causing HOWO transmission failures on mountainous routes. For authorized service centers, installation kits are available including matched shim sets ensuring proper end float adjustment when replacing AZ2210030036/7 countershaft gears during comprehensive transmission overhauls on HOWO long-haul tractors.
With dedicated production lines manufacturing SINOTRUK HOWO spare parts, we maintain consistent quality control absent in generic aftermarket solutions. The induction-hardened case depth extends below the tooth contact zone creating superior load-bearing capability validated by FEA simulations showing 23% lower subsurface stresses than budget alternatives. Each shipment includes corrosion-inhibiting VCI packaging protecting the precision-ground surfaces during ocean transit to global distributors. Performance warranties specifically covering material and manufacturing defects provide security for fleet maintenance decisions regarding AZ2210030036/7 components that serve as critical power transfer elements within HOWO commercial vehicle transmissions globally recognized for heavy-duty reliability.
