Parallel-axis helical gears
Matched right- and left-hand gears designed for parallel shafts with the required ratio and center distance.
custom helical gears
Helical Gears
Custom helical gears and pinions for smoother parallel-shaft transmission and controlled meshing.
Customization
100% to Drawing / Sample
Precision Grade
DIN 4-7 / AGMA 11-13
Engineering DFM
< 24 Hours Turnaround
Quality System
ISO 9001:2015
Featured Product Model & RFQ Specifications
Custom Helical Gear
Drawing-based helical gears and helical pinions for parallel-shaft reducers, machinery drives, and low-noise transmission assemblies.
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)
Manufacturing capability
Technical Overview & Engineering Capability for custom helical gears.
Custom helical gears use angled teeth that enter contact progressively. This geometry can support smoother engagement and higher contact overlap than a comparable spur gear, but it also introduces axial force and makes helix direction essential. ZhongYi reviews helical gear drawings for normal or transverse module, pressure angle, helix angle, right- or left-hand direction, tooth count, face width, bore, material, heat treatment, and the mating gear. Buyers should provide the complete gear pair or assembly conditions because a helical gear cannot be selected reliably from diameter and tooth count alone.
Tooth Accuracy DIN 4-7 / AGMA 11-13
Tooth Finishing CNC Ground (Ra ≤0.4µm)
Heat Treatment Carburized 58-62 HRC
Product types & variants
Helical Gears types and manufacturing paths.
The final product form is confirmed from the buyer drawing, mating component, assembly layout, operating conditions, and inspection requirements.
Ground helical gears
Heat-treated and finished designs for projects that specify controlled tooth accuracy, surface finish, or wear performance.
Helical pinion shafts
Integral pinion and shaft components that reduce separate joints but require clear bearing, shoulder, and datum dimensions.
Helical gear replacements
Drawing- or sample-based parts reviewed against the mating gear, shaft arrangement, lubrication, and housing constraints.
Selection & Metallurgy guidance
How to specify the correct helical gears configuration.
Confirm which gear data system the drawing uses. Normal module and normal pressure angle are not interchangeable with transverse values without calculation. Helix hand, helix angle, and tooth count determine whether the proposed gear will mesh with its partner. The axial load created by angled teeth must be accepted by the bearings and housing. Procurement teams should also document ratio, center distance, input speed, transmitted torque, duty cycle, lubrication, operating temperature, allowable backlash, and the inspection standard required for the finished component.
Material & Heat Treatment Options
- Carbon steel for general industrial gearing
- Alloy steel for heat-treated or wear-resistant designs
- Stainless steel for selected corrosive environments
- Engineering materials specified by the buyer drawing
Engineering Selection Factors
- Normal module, pressure angle, and helix angle
- Helix hand and mating-gear compatibility
- Axial thrust, bearing arrangement, speed, and load
- Bore, keyway, spline, hub, and datum surfaces
- Heat treatment, tooth finishing, backlash, and inspection plan
Quality Control & Inspection Matrix
Engineering Evidence & 100% Inspection for Helical Gears.
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:
For custom helical gears, technical review should connect the drawing to the complete assembly. ZhongYi checks the gear pair data, blank features, shaft connection, material, heat treatment, and finishing notes before manufacturing feasibility is confirmed. Useful inspection requirements may include bore and face runout, lead or helix-related checks, tooth thickness, pitch-related measurements, hardness, and contact inspection where the buyer specifies it. Because helix errors can affect contact across the face, controlled datums and drawing revisions provide important quality evidence for an engineering buyer.
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
Application fit
Helical Gears operating environments.
Match the gear type with real machinery conditions, operating environment, load, speed, and replacement requirements.
- Industrial reducers and enclosed gear drives
- Machine tools, conveyors, and automated equipment
- Vehicle and mobile machinery transmission components
- Drive systems where smoother tooth engagement is required
Application Markets
View All 5 Industry Hubs →
Where Helical Gears Are Engineered & Deployed
Discover how this gear category meets extreme torque, low backlash, quiet operation, and weather-resistance demands in primary industry sectors:
🏗️ 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.
🤖 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.
🩺 Ultra-Quiet & High-Precision Micro Transmission
Medical & Laboratory
Ultra-quiet, contamination-free micro gears in medical-grade POM, PEEK, and stainless steel for surgical robotics, infusion pumps, and clinical lab equipment.
🌬️ 20-Year Outdoor Longevity & High Wind Torque
Renewable Energy
Heavy-torque yaw/pitch gears, slewing ring drives, and precision worm drives engineered for 20-year service life in wind turbines and solar tracking fields.
Technical FAQ
Common technical and purchasing questions for Helical Gears.
These answers support early engineering and procurement review. Final dimensions, materials, tolerances, and process requirements are confirmed against the approved drawing file.
What is the main difference between spur and helical gears? ▼
Spur gear teeth are parallel to the axis, while helical teeth are angled. Helical engagement is more progressive, but the design normally creates axial thrust and requires the helix hand and bearing arrangement to be considered.
Which helical gear dimensions should be included in an RFQ? ▼
Include module definition, pressure angle, helix angle and hand, tooth count, face width, bore or shaft details, center distance, ratio, material, heat treatment, backlash target, and the mating gear information.
Can ZhongYi review a helical pinion shaft as one component? ▼
Yes, an integral pinion shaft can be reviewed from a complete drawing or sample. Bearing seats, shoulders, threads, splines, keyways, heat-treatment zones, straightness, and gear datums should be identified clearly.
24-Hour Engineering Quote & DFM Review
Upload Your Drawings for Helical 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.
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