U.J.cross cardan joint Universal Joint cross joint for 5-7202X of factory
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
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.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:≥1.5×105 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.
if you need, please contact me freely.
Connie
Email:connie at ntl-bearing.com
Whatsapp:+8615073676619
Wechat:empty919