Designations :NU 3980 ECMA
Principal dimensions(mm)
d :400
D :540
B :106
Basic load ratings(KN)
Cr :1 760
Cor :3 750
Fatigue load limit(r/min)
Pu :320
Speed ratings(r/min)
Reference speed :1 000
Limiting speed :1 500
Dimensions(mm)
d1≈ :–
D1≈ :500
F E :434.5
r1,2 :4
r3,4 :4
s :4
Abutment and fillet dimensions(mm)
da
min :415
da
max :429
db,Da
min :439
Da
max :524
ra
max :3
rb
max :3
Calculation factor
kr :0.1
Angle ring Designation :–
Mass(kg) :–
Dimensions(mm)
B1 :–
B2 :–
Weight(kg) :74.5
