Place of Origin : Hangzhou,China
Post Date : 12-07-2016
Expiry Date : 12-07-2017

Auto Universal Joint
1.Raw Material :20Cr/20CrMnTi(structural Alloy Steel):
For Spider:20Cr / 20CrMnTi;
For Bushing:20Cr/GCr15;
For Needle Roller:GCr15.
For Cross Assembly: 20CrMnTi

2.chemical Component:
C:0.18~0.24
Si:0.17~0.37
Mn:0.50~0.80
Cr:0.70~1.00
P:≤0.030
S：≤0.030

3.mechanical Property:
Material No：20Cr
Heat Treatment：carburizing、quenching、temper
Surface Hardness：58~64HRC
Tensile Strength(σb)：640
Yield Strength(σs)：390
Flexure-torsion Fatigue (σ-1)：305
Shear Fatigue(τ-1)：160
Bending Stress [σ-1]：60

4.function Of U-joint Assembly
1).safety Factor Of Static Torsion Strength:≥2.0
2).torsional Fatigue Life: ≥1.5x10^5 Cycle Index.
3).wearing Life: ≥60h .

5.heat Treatment:
Spider:
1).surface Hardness:58-64HRC
2).inner Hardness:25-45HRC Or 38-48HRC(20CrMnTi)

6.bearing Cap:
1).surface Hardness:58-64HRC
2).the Depth Of Effective Hardened Layer:0.3~0.7mm.
3).metallography Structure:M+A’1-5 Level