Axial Movement for Gear Shifting
Sliding splined shafts serve as core components in transmissions and power-shift equipment that require axial sliding movement. The spline sleeve moves freely along the shaft to enable gear changes or power clutch engagement. With 21 years of gear shaft manufacturing experience, we have developed mature processes for these frequently sliding splined components. Spline modules range from 2 to 5 with teeth 14 to 40 and accuracy Grade 7-8. Effective sliding lengths reach 50 to 300 millimeters, covering most shifting stroke requirements.
Critical Clearance Fit Requirement
This product has one non-negotiable requirement: tooth clearance must use H/f fit. This fit type is specifically designed for sliding applications, ensuring smooth spline sleeve movement without binding. If the fit selection is incorrect, the spline sleeve sticks during shifting, preventing normal gear changes or damaging shift fork mechanisms. Our technical team pays special attention to this point during drawing review, confirming the fit is correctly specified. Both ends receive C3 to C6 chamfers with all burrs removed to prevent seal damage during assembly.
Geometric Accuracy and Wear Resistance
For geometric tolerances, radial runout controls within 0.04 to 0.07 millimeters. This accuracy ensures uniform spline tooth profiles. If runout exceeds limits, the spline sleeve experiences periodic tight and loose conditions during sliding, accelerating wear. Tooth surface hardening achieves HRC 52-58, ensuring spline teeth maintain wear resistance under frequent sliding friction without rapid clearance increase. Our in-house heat treatment department performs hardening processes with hardness inspection on every product.
Quality Assurance Process
We support custom manufacturing based on your drawings and samples with free drawing review before ordering. During production, we regularly share real photos and inspection data with you. Substandard parts never leave our workshop. We offer a one-year warranty covering all products.
Technical Specifications Table
|
Parameter |
Range / Specific Requirements |
|
Spline Module |
2~5 |
|
Spline Teeth |
14~40 |
|
Spline Accuracy |
7~8 |
|
Tooth Clearance Fit |
H/f (sticking prevention) |
|
Spline Effective Sliding Length |
50~300mm |
|
End Chamfers |
C3~C6 deburred |
|
Radial Runout |
≤0.04~0.07mm |
|
Tooth Surface Heat Treatment |
Hardened HRC 52~58 (wear resistance) |
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