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SPLINE SHAFTS | |
Product Name | Rear Spline Shaft / Middle Spline Shaft |
Keywords | Spline Shaft |
Material | Alloy steel (e.g., AISI 4140, 4340, 8620) or carbon steel (e.g., 1045, 1144) |
Heat Treatment | Case hardening (surface 58-62 HRC, core 28-35 HRC) or through hardening (40-50 HRC) |
Spline Type | Involute spline (standard: ISO 4156, DIN 5480, ANSI B92.1) |
Pressure Angle | 30° or 37.5° (common for automotive); 45° (for high torque/stub) |
Number of Teeth | 10 - 40 teeth (application-dependent) |
Fit Class | Side fit (major/minor diameter clearance) or major diameter fit (H7/g6, H7/f7 sliding fit) |
Spline Length | 50 - 300 mm (dependent on application travel) |
Diameter Range | Major diameter: 20 - 100 mm (common automotive range) |
Torsional Strength | Designed to exceed maximum engine/transmission torque (e.g., 500 - 4000 N·m) |
Surface Finish (Spline) | Ground or precision broached (Ra ≤ 1.6 µm) |
Straightness Tolerance | ≤ 0.1 mm per 300 mm length |






