🏗️ 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 helical gear manufacturer
Custom Helical Gear
Drawing-based helical gears and helical pinions for parallel-shaft reducers, machinery drives, and low-noise transmission assemblies.
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 Helical Gear manufacturing starts with confirmed technical requirements.
Review the gear pair, assembly conditions, drawing requirements, specification checks, and inspection points before requesting a quotation.
Custom helical gears use angled teeth that engage progressively across the tooth face. This progressive contact delivers smoother, quieter meshing and higher load overlap compared to straight spur gears of the same size. However, angled teeth also generate axial thrust forces that must be absorbed by bearings and housing shoulders. ZhongYi reviews helical gear drawings for normal and transverse module, pressure angle, helix angle, right- or left-hand helix direction, tooth count, face width, bore, keyway, spline, material, heat treatment, and mating gear compatibility. Engineering buyers should specify the complete gear pair or center distance to ensure proper mesh and avoid hand or lead misalignments.
Tooth Accuracy DIN 5-7 / AGMA 11-13
Tooth Finishing CNC Ground (Ra ≤0.4µm)
Hardness Grade Carburized 58-62 HRC
Custom Helical Gear Factory Genuine Spec
Selection guidance
How to specify a custom helical gear for quotation.
Use application and mating-component data to confirm geometry, materials, mounting details, and the acceptance plan.
Confirm which coordinate system the drawing specifies: normal module (Mn) or transverse module (Mt). Verify helix angle, helix hand (RH or LH), pitch diameter, tooth count, face width, and exact center distance with the mating gear. Because angled teeth generate axial thrust, ensure the bearing layout is designed to support the resulting axial load. Specify operating torque, input speed, duty cycle, lubrication type, allowable backlash, and post-heat-treatment tooth finish in the quotation request.
Technical specifications
Core technical parameters for engineering and procurement review.
| Product type | External helical gear or helical pinion shaft made to approved technical data |
|---|---|
| Manufacturing basis | Buyer drawing, sample, mating gear pair, or confirmed gear data sheet |
| Tooth system | Normal module (M0.8 - M20), helix angle (8° to 30°), pressure angle (14.5° / 20°), right- or left-hand |
| Materials | Carbon steel (1045 / C45), alloy steel (40Cr, 42CrMo, 20CrMnTi, 8620), stainless steel (304/316) |
| Mounting & shaft | Finished bore, keyway, DIN 5480 involute spline, interference fit, or integral pinion shaft |
| Order confirmation | Lead and profile modification, pitch runout, tooth thickness, hardness, and backlash per RFQ |
Custom options
Manufacturing details that can be reviewed before quotation.
- Normal module or transverse module tooth calculation per drawing
- Right-hand (RH) or left-hand (LH) helix orientation to match driven assembly
- Hobbed, shaved, induction-hardened, or precision tooth-ground finish
- Finished bore, broached keyway, internal spline, or integrated bearing shaft journals
- OEM batch production or sample-based replacement gear manufacturing
Quality control
Inspection points tied to the approved technical file.
- Drawing revision, helix hand, and mating gear pair compatibility check before production
- Blank dimensions, bore runout, and face wobble inspected against datums
- Helix lead error, profile deviation, tooth thickness, and pitch runout checked when specified
- Hardness testing, case depth verification, and protective anti-rust packaging per order
All products can be custom manufactured from 2D/3D CAD drawings or physical samples.
Quality Control & Inspection Matrix
Engineering Evidence & 100% Inspection for Custom Helical Gear.
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:
Helical gear performance relies on accurate lead and involute profile geometry across the entire face width. Inspection checkpoints follow the approved technical drawing and may include bore and face runout, normal tooth thickness (span measurement or over-pin dimension), lead angle accuracy, surface roughness, and case hardness. ZhongYi manufactures to agreed tolerances and drawing specifications without assuming unverified accuracy grades.
Zeiss / Hexagon 3D CMM
Validates 3D spatial GD&T, bore concentricity, center distance, and geometric tolerances down to ±0.002 mm.
Klingelnberg CNC Gear Analyzer
Inspects involute tooth profile error (fα), lead crowning (fβ), pitch cumulative error (Fp), and radial runout (Fr).
Digital Micro-Vickers & Rockwell Testers
Verifies surface hardness (58–62 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 Helical Gear operating environments.
Confirm load, speed, duty cycle, environment, lubrication, and assembly constraints before selecting the final material and manufacturing route.
- Industrial reducers, planetary drives, and parallel-shaft gearboxes
- Machine tools, automated gantry systems, and conveyor drives
- Automotive, motorcycle, and construction equipment transmissions
- Pumps, compressors, and high-speed machinery requiring reduced gear noise
Application Markets
View All 5 Industry Hubs →
Where Custom Helical Gear Are Engineered & Deployed
Discover how this gear category meets extreme torque, low backlash, quiet operation, and weather-resistance demands in primary industry sectors:
🤖 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.
🌾 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 helical gear products.
Critical specifications are confirmed against final drawings before production.
What is the difference between normal module and transverse module? ▼
Normal module (Mn) is measured perpendicular to the tooth helix, while transverse module (Mt) is measured in the plane of rotation. They are related by the cosine of the helix angle: Mt = Mn / cos(β). Both must be clarified before manufacturing.
How do I determine the correct helix hand for mating helical gears? ▼
For parallel shafts, an external right-hand helical gear must mesh with an external left-hand helical gear of the same helix angle. Providing both drawings or samples ensures correct pair matching.
Can ZhongYi manufacture integral helical pinion shafts? ▼
Yes. Helical pinion shafts can be manufactured with finished bearing journals, seal diameters, shoulders, threads, and spline features according to the complete engineering drawing.
24-Hour Engineering Quote & DFM Review
Upload Your Drawings for Custom Helical Gear 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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