Designations :NU 228 ECM
Principal dimensions(mm)
d :140
D :250
B :42
Basic load ratings(KN)
Cr :450
Cor :510
Fatigue load limit(r/min)
Pu :57
Speed ratings(r/min)
Reference speed :2800
Limiting speed :3200
Dimensions(mm)
d1≈ :–
D1≈ :215.78 169
F E :
r1,2 :3
r3,4 :3
s :2.5
Abutment and fillet dimensions(mm)
da
min :154
da
max :165
db,Da
min :172
Da
max :235
ra
max :2.5
rb
max :2.5
Calculation factor
kr :0.15
Angle ring Designation :HJ 228 EC
Mass(kg) :0.97
Dimensions(mm)
B1 :11
B2 :18
Weight(kg) :9.4
