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Transfer Case Sliding Sleeve

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Transfer Case Sliding Sleeve
Benefit: Cost Saving, Increased Component Complexity
Main Forming Process: Conventional Processing
End Use Sector: Automotive
Material: Ferrous

Finishing: Sizing, Rolling, Machining, Heat treatment


This part is used in a transfer case on 4WD SUVs. It combines two main functions: the upper part is a sliding sleeve similar to what could be found in a standard manual transmission and the lower part a ring gear as in an automatic transmission planetary assembly.


Traditionally this part was made out of two wrought steel forged parts (sliding sleeve and ring gear), with the sleeve press fitted on the ring gear then welded onto it. Thanks to PM’s unique capabilities the entire part can be produced in one operation. This enables a major cost saving of some 20% compared to conventional production methods.

Component Specification

Density (g/cm3): 7.5
Tensile Strength (MPa): 1200
Hardness (Hv0.1): 750

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