Review the gear pair, assembly conditions, drawing requirements, specification checks, and inspection points before requesting a quotation.
Transmission gears must withstand cyclic bending shock loads, high contact pressures, and thermal fatigue while operating quietly across multiple speed ratios. ZhongYi manufactures custom manual, automated, and powershift transmission gears for commercial vehicles, tractors, construction equipment, and motorcycles. Our manufacturing range includes single gears, stepped dual-cluster gears, integral input shafts, and synchronizer engagement hubs. We use premium carburizing alloy steels, deep vacuum or pit carburizing to 58-62 HRC, and high-speed CNC continuous generation gear grinding to ensure quiet meshing and long service life under heavy towing and PTO loads.
How to specify a custom transmission gears & cluster gears for quotation.
Use application and mating-component data to confirm geometry, materials, mounting details, and the acceptance plan.
Transmission gear quotation requires gear geometry (number of teeth, normal module, pressure angle, helix angle and hand, face width), mating gear center distance, material specification, effective case depth, surface hardness, and internal spline details. For replacement programs, supplying mating gears and shafts ensures ideal backlash and contact pattern under deflection.
Technical specifications
Core technical parameters for engineering and procurement review.
Overseas procurement teams require verifiable technical data, not unsupported claims. Every production batch at ZhongYi is inspected against approved CAD blueprints and international standards (DIN, AGMA, ISO).
Component-Specific Quality Focus:
To meet modern NVH (noise, vibration, and harshness) and high-load transmission standards, ZhongYi applies precise tooth profile modifications (crowning, tip relief, end relief) determined through contact pattern analysis. All gears are 100% verified against approved drawing tolerances before dispatch.
Coordinate Metrology
Zeiss / Hexagon 3D CMM
Validates 3D spatial GD&T, bore concentricity, center distance, and geometric tolerances down to ±0.002 mm.
Tooth Geometry Analysis
Klingelnberg CNC Gear Analyzer
Inspects involute tooth profile error (fα), lead crowning (fβ), pitch cumulative error (Fp), and radial runout (Fr).
Hardness & Case Depth
Digital Micro-Vickers & Rockwell Testers
Verifies surface hardness (58–62 HRC), core toughness, and effective carburized / nitrided case depth gradient.
Chemical Metallurgy
Direct-Reading Optical Spectrometer
100% chemical composition verification of alloy steel forgings (20CrMnTi, 42CrMo, 18CrNiMo7-6, Stainless, POM).
Inspection Deliverables with Every Shipment
Complete Batch Traceability & Certified Test Reports
EN 10204 Type 3.1 Mill Test Certificate (Chemical & Mechanical Properties)
Zeiss 3D CMM Full Dimensional Inspection Sheet
Klingelnberg Tooth Profile & Lead Crowning Graph Report
Effective Carburized Case Depth & Hardness Curve Data
We maintain strict incoming material spectroscopy, in-process CNC tooth coordinate monitoring, and 100% final pre-shipment dimensional inspection. All custom gear batches are backed by our full manufacturing warranty.
High-torque, impact-resistant gears, girth rings, and planetary drive sets engineered for excavators, cranes, drilling rigs, and heavy mining crushers.
Common questions before ordering custom transmission gears & cluster gears products.
Critical specifications are confirmed against final drawings before production.
Can ZhongYi machine both the main gear and the synchronizer dog teeth on a single blank?▼
Yes, we utilize multi-axis CNC gear shaping, hobbing, and mill-turn centers to produce transmission gears with integrated dog clutch teeth, shift-fork grooves, and synchronizer cones in unified setups.
What carburizing depth do you typically provide for heavy tractor transmission gears?▼
For modules between Mod 3.0 and Mod 6.0, we typically carburize to an effective case depth of 0.9 mm to 1.4 mm at 550 HV, achieving surface hardness of 58-62 HRC with tough core hardness of 32-42 HRC.
Do you supply complete transmission gear pairs with matched contact patterns?▼
Yes, we can grind and verify transmission gear pairs as matched sets to ensure optimal center-distance contact pattern and backlash control.
24-Hour Engineering Quote & DFM Review
Upload Your Drawings for Custom Transmission Gears & Cluster Gears Manufacturing
Send your 2D blueprints or 3D CAD models. Our senior gear engineering team will review tooth geometry, module/pitch, materials, heat treatment feasibility, and provide transparent factory pricing within 24 hours.
Supported CAD Blueprint & Drawing Formats:
STEP (.step / .stp) AutoCAD (.dwg / .dxf) IGES (.igs) SolidWorks / 3D CAD PDF Technical Blueprints Worn Physical Samples
Mutual NDA Protection
We sign strict Non-Disclosure Agreements to safeguard proprietary designs.
< 24h DFM Feedback
Rapid manufacturability review, tolerance checks, and unit quotation.
Direct Factory Engineering
Direct technical communication with senior master gear artisans.
