Smith Bearing Company IRR-3/4 Needle roller bearings

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Smith Bearing Company IRR-3/4 Needle roller bearings image

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The details of Needle roller bearings

Bearing number:NJ 28/530 ECMA
Size (mm):650x530x72
Bore Diameter (mm):650
Outer Diameter (mm):530
Width (mm):72
d:530 mm
D:650 mm
B:72 mm
d1:570 mm
D1:614 mm
F:560.5 mm
r1,2 - min.:3 mm
s:0.5 mm
da - min.:543 mm
da - max.:554 mm
db - min.:575 mm
Da - max.:637 mm
ra - max.:2.5 mm
Basic dynamic load rating - C:1170 kN
Basic static load rating - C0:2700 kN
Fatigue load limit - Pu:212 kN
Reference speed:900 r/min
Limiting speed:1200 r/min
Calculation factor - kr:0.05
d1 ≈:570 mm
D1 ≈:614 mm
r1,2 min.:3 mm
s max.:0.5 mm
da min.:543 mm
da max.:554 mm
db min.:575 mm
Da max.:637 mm
ra max.:2.5 mm
Basic dynamic load rating C:1170 kN
Basic static load rating C0:2700 kN
Fatigue load limit Pu:212 kN
Calculation factor kr:0.05
Limiting value e:0.3
Axial load factor Y:0.4
Mass bearing:54 kg

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