NK55/25 bearing
Bearing Designation
Current Code :NK55/25
Original Code :
Shaft Diameter（mm） :55
Weight(Kg) :167
Boundary Dimensions(mm)
Fw :55
D :68
C :25
Basic Load Rating(N)
Dynamic :30600
Static :60800
Limiting Speed(rpm)
Oil :7600
Needle roller bearing is a special type roller bearing which uses long, thin cylindrical rollers resembling needles. Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a great load. They are widely used in automobile components such as rocker arm pivots, pumps, compressors and transmissions.
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