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Spline Shaft

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High-Strength Spline Shaft of Alloy Steel in Heavy Duty Transmission System Custom Long Length Available

Place of Origin:

Jiangsu Province, China

Brand Name:


Model Number:


  • Description
  • Specifications
  • Applications
  • Competitive Advantage
  • Inquiry

Quick Detail:
1. spline axle / castellated shaft / castellated axle

2. Used in transmission system in aircraft, automobiles, tractors, machine tool manufacturing, agricultural machinery, and general mechanical transmission and other devices.

3. Available: diameter <= 1 meters, length <= 10 meters

Minimum Order Quantity:



Dependent on specifications

Packaging Details:

scratch-resistant, rust-resistant, damp-proof, or as requested

Delivery Time:

Dependent on destination country

Supply Ability:


A spline shaft is a kind of mechanical transmission. Its function is similar with flat keys, half-circle keys, and oblique keys, of which transmit mechanical torque. There is a longitudinal keyway on the surface of the shaft, and the rotating part sleeved on the shaft also has a corresponding keyway, which makes rotation synchronously with the axis. While rotating, some can also slide longitudinally on the shaft, such as gearbox shift gears, etc. Spline shafts are divided into rectangular spline shafts and involute spline shafts.



High strength alloy steel, eg. 18Cr2Ni4W, 20Cr2Ni4A, 17CrNiMo6, 18CrNiMo7-6, 20CrMnTi, 40CrNiMo, 30CrMnSi, 27SiMn, 35CrMo, 42CrMo, 40Cr, etc.

Total Length (m)

<= 10

Tooth Finish

Standard, high-precision

Key Type

Rectangular key, involute key

Allowable Torque (Nm)



Rectangular spline shafts are widely used, such as aircraft, automobiles, tractors, machine tool manufacturing, agricultural machinery and general mechanical transmission devices.

Its characteristics include multi-tooth work, high load-bearing capacity, good centering, good guidance, shallow tooth root, small stress concentration, small weakening of shaft and hub strength, convenient processing, and high precision with grinding methods.

Involute spline shafts are used for connections with large loads, high centering accuracy requirements, and large dimensions

Competitive Advantage

- capability of customization of spline shaft from drawings, 3D models, or simple part.

- capability of non-standard spline shaft manufacturing.

- capability of custom spline design and manufacturing.

- integrity of manufacturing process including material choose, forge, fine machining, grinding, heat treatment, and surface treatment, etc.