DIN 5480 & ANSI B92.1 Involute Spline Shafts
High-strength involute splined shafts engineered for heavy torque transmission and precise rotational alignment.
custom spline shaft manufacturer
Spline Shafts and Hubs
Precision involute and straight-sided spline shafts, splined sleeves, and couplings for heavy-torque power transmission and sliding drive connections.
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 Spline Shafts and Hubs
Precision involute and straight-sided spline shafts, splined sleeves, and mating couplings engineered for high-torque transmission and dynamic sliding connections.
Governing standards
DIN 5480, DIN 5482, ANSI B92.1, ISO 4156, GB/T 3478, SAE J499, DIN ISO 14
Spline types
Involute splines (30°, 37.5°, 45° pressure angles) and Straight-sided parallel splines (4 to 20 keys)
Diameter & Length
Spline diameters from Ø12 mm to Ø220 mm; shaft lengths up to 1800 mm
Centering methods
Flank centering (side-fit for high torque) or Major/Minor diameter centering (for precision runout)
Manufacturing capability
Technical Overview & Engineering Capability for custom spline shaft manufacturer.
Spline shafts and splined hubs transmit high rotational torque with superior torsional strength, accurate concentric alignment, and the ability to accommodate axial sliding under load. Compared to conventional single or double keyways, multiple spline teeth eliminate localized stress concentrations, prevent keyway walloping, and ensure higher fatigue endurance. ZhongYi manufactures custom involute spline shafts (DIN 5480, DIN 5482, ANSI B92.1, ISO 4156) and straight-sided/parallel key splines (DIN ISO 14, SAE J499) from buyer drawings or samples. Manufacturing capabilities include CNC spline hobbing, high-speed spline cold-rolling, internal spline broaching and wire-EDM shaping, precision CNC spline profile grinding, localized induction hardening, and multi-journal cylindrical grinding with runout under 0.005 mm.
Tooth Accuracy DIN 4-7 / AGMA 11-13
Tooth Finishing CNC Ground (Ra ≤0.4µm)
Heat Treatment Carburized 58-62 HRC
Product types & variants
Spline Shafts and Hubs types and manufacturing paths.
The final product form is confirmed from the buyer drawing, mating component, assembly layout, operating conditions, and inspection requirements.
Straight-Sided / Parallel Key Spline Shafts
Traditional 6-spline, 8-spline, and 10-spline shafts (DIN ISO 14 / SAE J499) for sliding gear transmissions and agricultural PTOs.
Internal Splined Sleeves & Broached Hubs
Precision broached, shaped, or wire-EDM internal splined couplings and adapter bushings.
Integral Splined Pinion Shafts
Shafts combining involute splines with integral spur, helical, or bevel gears on a single workpiece.
Selection & Metallurgy guidance
How to specify the correct spline shafts and hubs configuration.
When ordering spline shafts, clearly specify the governing standard (e.g. DIN 5480 W 50 x 2 x 24 x 8f for external shaft or DIN 5480 N 50 x 2 x 24 x 9H for internal hub) or Diametral Pitch with pressure angle (e.g. ANSI B92.1 16/32 DP 30°). Identify the fit class (sliding fit, transition fit, or press fit) and centering method. Provide mating hub dimensions or supply the mating part for plug-gage or physical mesh verification. Detail all bearing journal diameters, thread sizes, keyways, center holes, and hardness zones on the drawing.
Material & Heat Treatment Options
- High-strength alloy steel (40Cr, 42CrMo4 / AISI 4140, 4340) for high fatigue & shock resistance
- Case-hardening alloy steel (20CrMnTi, 18CrNiMo7-6, 8620) for severe surface wear
- Medium carbon steel (C45 / 1045) for general industrial drive shafts
- Stainless steel (304, 316, 17-4PH) for marine, chemical, and food machinery drives
Engineering Selection Factors
- Spline standard, nominal diameter, module/DP, pressure angle (30°, 37.5°, or 45°), and tooth count
- Fit type: Side fit (flank-centered) for torque or Major-diameter fit for precision concentricity
- Fixed joint vs sliding spline under load (sliding travel, lubrication grooves, surface coating)
- Mating internal splined hub, sleeve, or gear interface drawing
- Heat treatment: through-hardened, induction-hardened spline teeth, or localized case carburizing
Quality Control & Inspection Matrix
Engineering Evidence & 100% Inspection for Spline Shafts and Hubs.
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:
Spline shaft geometry is verified using precision spline go/no-go plug and ring gages, involute profile testers, and optical CMMs. Inspection checks include span measurement across pins (W-dimension), base tangent length, tooth profile error (Fα), tooth lead error (Fβ), journal concentricity, surface finish (Ra), and induction hardness depth. Go/No-Go gage records and full dimensional inspection sheets accompany all delivered shipments.
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
Spline Shafts and Hubs operating environments.
Match the gear type with real machinery conditions, operating environment, load, speed, and replacement requirements.
- Agricultural tractor PTO (Power Take-Off) drive shafts and implement couplings
- Hydraulic pump drive shafts, motor splines, and hydrostatic transmission axles
- Heavy commercial truck transmissions, drive axles, and transfer cases
- Machine tool spindle drives, indexing heads, and sliding gear change mechanisms
Application Markets
View All 5 Industry Hubs →
Where Spline Shafts and Hubs 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.
🩺 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.
Technical FAQ
Common technical and purchasing questions for Spline Shafts and Hubs.
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 difference between involute splines and straight-sided splines? ▼
Involute splines have curved tooth flanks (similar to gear teeth) that self-center under torque and provide significantly higher shear strength and fatigue resistance. Straight-sided splines have rectangular teeth and are common in agricultural PTOs and sliding gearboxes.
Can ZhongYi machine both the external spline shaft and matching internal splined hub? ▼
Yes. We manufacture both mating components in-house using CNC spline hobbers, spline profile grinders, precision broaching machines, and wire-EDM to ensure smooth, zero-jamming engagement and verified backlash.
How do I specify a DIN 5480 spline on an engineering drawing? ▼
A standard DIN 5480 callout includes: "DIN 5480 - W/N [Nominal Diameter] x [Module] x [Number of Teeth] x [Tolerance Class]" (e.g., DIN 5480 - W 40 x 2 x 18 x 8f for a shaft, where W = external shaft, 40 = ref diameter, 2 = module, 18 = tooth count, 8f = tolerance).
24-Hour Engineering Quote & DFM Review
Upload Your Drawings for Spline Shafts and Hubs 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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