๐๏ธ Heavy-Duty & High-Impact Transmission
Construction & Mining Machinery
High-torque, impact-resistant gears, girth rings, and planetary drive sets engineered for excavators, cranes, drilling rigs, and heavy mining crushers.
custom gear shaft manufacturer
Custom Gear Shaft and Pinion
Integral gear shafts and pinion shafts combining precision gear tooth geometry with bearing journals, splines, and drive features on a single workpiece.
Customization
100% to CAD / Sample
Precision Grade
DIN 4-7 / AGMA 11-13
DFM Analysis
< 24 Hours Turnaround
Quality System
ISO 9001:2015
Product overview
Custom Gear Shaft and Pinion manufacturing starts with confirmed technical requirements.
Review the gear pair, assembly conditions, drawing requirements, specification checks, and inspection points before requesting a quotation.
An integral gear shaft combines the pinion gear teeth directly onto the transmission shaft blank, eliminating separate hub-and-key joints, reducing assembly stack-up errors, and enabling smaller pinion tooth counts with larger pitch lines. ZhongYi manufactures custom gear shafts and integral pinions from customer 2D/3D engineering drawings or samples. The production and quality scope includes turning precision bearing journals, milling keyways, rolling or hobbing involute splines (DIN 5480, ANSI B92.1), cutting spur, helical, bevel, or worm teeth, and performing localized induction hardening or carburizing. Because shafts are susceptible to thermal distortion during heat treatment, strict control of center holes, straightening, and post-heat-treatment cylindrical and tooth grinding ensures tight radial runout and journal concentricity.
Tooth Accuracy DIN 5-7 / AGMA 11-13
Tooth Finishing CNC Ground (Ra โค0.4ยตm)
Hardness Grade Carburized 58-62 HRC
Custom Gear Shaft and Pinion Factory Genuine Spec
Selection guidance
How to specify a custom gear shaft and pinion for quotation.
Use application and mating-component data to confirm geometry, materials, mounting details, and the acceptance plan.
Supply a complete shaft drawing clearly defining dimensional datums (such as center holes), bearing journal diameters and tolerance classes, shoulder fillet radii, gear tooth parameters, and heat treatment zones. Indicate which journals require grinding after heat treatment. If the shaft features splines, specify the applicable standard (DIN 5480, ANSI B92.1, or GB/T 3478) and fit type (flank-centered or major-diameter centered). Review transmitted torque, bending moments, and radial loads to verify shaft fatigue strength.
Technical specifications
Core technical parameters for engineering and procurement review.
| Product type | Integral spur pinion shaft, helical pinion shaft, bevel pinion shaft, or splined gear shaft |
|---|---|
| Manufacturing basis | Customer 2D/3D drawing, CAD model, or complete transmission shaft sample |
| Shaft dimensions | Shaft diameters from ร15 mm to ร200 mm, overall lengths up to 1500 mm |
| Gear tooth types | Spur, helical (RH/LH), straight bevel, spiral bevel, or single/multi-start worm pinion |
| Shaft features | Precision bearing seats (h6/k6/js6), oil seal journals, keyways, threads, and external/internal splines |
| Materials | Carbon steel (1045), alloy steel (40Cr, 42CrMo, 20CrMnTi, 18CrNiMo7-6, 8620), stainless steel |
Custom options
Manufacturing details that can be reviewed before quotation.
- Integral spur or helical pinion with ground tooth flanks for low noise
- Involute spline or straight-sided spline sections for sliding or fixed couplings
- Localized case carburizing (HRC 58-62) on gear teeth with masked ductile shaft journals
- Medium frequency induction hardening on tooth surfaces and wear areas
- Precision CNC cylindrical grinding for bearing seats and seal diameters (surface finish Ra 0.4 - 0.8)
Quality control
Inspection points tied to the approved technical file.
- Review of drawing datums, bearing tolerance fits, spline standards, and heat-treatment zones
- Shaft straightness, total radial runout (TIR), and concentricity inspection across all journals
- Tooth lead and profile accuracy, pitch runout, and journal surface roughness (Ra) measurement
- Hardness testing across specified zones (gear teeth, bearing seats, core hardness) and NDT crack testing when requested
All products can be custom manufactured from 2D/3D CAD drawings or physical samples.
Quality Control & Inspection Matrix
Engineering Evidence & 100% Inspection for Custom Gear Shaft and Pinion.
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:
Gear shaft quality depends on maintaining concentricity between the gear pitch circle and the bearing journals. Inspection uses precision center-bench runout fixtures, coordinate measuring machines (CMM), and gear inspection instruments. Journal roundness, straightness, hardness penetration, and tooth geometry are verified and documented in the final quality inspection dossier.
Zeiss / Hexagon 3D CMM
Validates 3D spatial GD&T, bore concentricity, center distance, and geometric tolerances down to ยฑ0.002 mm.
Klingelnberg CNC Gear Analyzer
Inspects involute tooth profile error (fฮฑ), lead crowning (fฮฒ), pitch cumulative error (Fp), and radial runout (Fr).
Digital Micro-Vickers & Rockwell Testers
Verifies surface hardness (58โ62 HRC), core toughness, and effective carburized / nitrided case depth gradient.
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
- 100% Pre-Shipment Visual, Thread & Anti-Rust Quality Verification
Our Factory Quality Commitment:
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.
ISO 9001:2015 Certified
DIN 4-7 / AGMA 11-13 Standards
Applications
Custom Gear Shaft and Pinion operating environments.
Confirm load, speed, duty cycle, environment, lubrication, and assembly constraints before selecting the final material and manufacturing route.
- Industrial speed reducers, planetary drive sun shafts, and input/output gear shafts
- Agricultural tractor transmissions, power take-off (PTO) shafts, and combine gearboxes
- Construction machinery winches, slew drive pinion shafts, and wheel drive axles
- Automotive, commercial vehicle, and heavy truck auxiliary transmission drivetrains
Application Markets
View All 5 Industry Hubs โ
Where Custom Gear Shaft and Pinion Are Engineered & Deployed
Discover how this gear category meets extreme torque, low backlash, quiet operation, and weather-resistance demands in primary industry sectors:
๐ค Sub-Arcminute Motion & Dynamic Positioning
Automation & Robotics
Low-backlash, ultra-precise fine-pitch gears, ground helical racks, and planetary gearheads for robotics, AGV wheel drives, and high-speed motion axes.
๐พ Rugged Heavy-Torque Transmission
Agriculture & Farm Equipment
High-torque bevel gears, spur gears, and splined drive shafts for tractors, harvesters, rotary tillers, and agricultural PTO gearboxes.
Technical FAQ
Common questions before ordering custom gear shaft and pinion products.
Critical specifications are confirmed against final drawings before production.
What is the advantage of an integral gear shaft over a separate gear and shaft? โผ
An integral gear shaft eliminates keyway backlash, reduces rotational inertia, allows smaller pinion tooth counts (since bore diameter is not a constraint), and improves torque transmission rigidity.
How is heat-treatment distortion controlled on long gear shafts? โผ
We utilize stress-relief normalizing before finish machining, vertical hanging during carburizing/quenching, hydraulic press straightening, and precision center-hole grinding followed by CNC cylindrical grinding on bearing journals after hardening.
Can ZhongYi machine both the gear teeth and splines on the same shaft? โผ
Yes. Our production facilities include multi-axis CNC turning centers, gear hobbers, spline rolling/milling machines, and CNC cylindrical grinders capable of machining complete shafts in-house to print.
24-Hour Engineering Quote & DFM Review
Upload Your Drawings for Custom Gear Shaft and Pinion 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.
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