Structure: Single
Material: 20CrMnTi
Place of Origin: Zhejiang, China (Mainland)
Model Number: u-joint
Brand Name: Swc,swp,swl,swz u-joint
u-joint series: SWC u-joint
u-joint Size: 38*83-245*532
u-joint Used: Industrial Equipment
1.U-joint Raw material :20Cr/20CrMnTi(structural alloy steel):
for spider:20Cr / 20CrMnTi;
for bushing:20Cr/GCr15;
for needle roller:GCr15.
for cross assembly: 20CrMnTi
2.u-joint chemical component:
C | Si | Mn | Cr | P | S |
0.18~0.24 | 0.17~0.37 | 0.50~0.80 | 0.70~1.00 | ≤0.030 | ≤0.030 |
3.u-joint mechanical property:
Material no. | Heat treatment | Surface hardness | tensile strength (σb) | yield strength (σs) | flexure-torsion fatigue (σ-1) |
Shear fatigue (τ-1) | Bending stress [σ-1] |
20Cr | carburizing quenching temper | 58~64HRC | 640 | 390 | 305 | 160 | 60 |
4.function of u-joint assembly
1).safety factor of static torsion strength:≥2.0
2).torsional fatigue life: ≥1.5x105 cycle index.
3).wearing life: ≥60h .
5.heat treatment of u-joint
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.
