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NSK QJ307 bearing

Bearing QJ307

These are from NSK's LY25 product series of linear bearings and rail. KY20 bearings also have metal scraper as shown. These are very heavy-duty units with special coating on both rail and bearings to inhibit rust and corrosion.We wiped off this unit to photograph it, but you can still see some grease on the rail and around the bearing scraper.

Angular contact ball bearings QJ307

Bearing number : QJ307

Size (mm) : 35x80x21

Brand : NSK

Bore Diameter (mm) : 35

Outer Diameter (mm) : 80

Width (mm) : 21

Bearing dimensions and specification in NSK catalogue:

d - 35 mm

D - 80 mm

B - 21 mm

C - 21 mm

Angle (α) - 35 °

a - 40,3 mm

r min. - 1,5 mm

da min. - 44 mm

da max - 71 mm

ra max. - 1,5 mm

Weight - 0,57 Kg

Basic dynamic load rating (C) - 55 kN

Basic static load rating (C0) - 80 kN

(Grease) Lubrication Speed - 7 100 r/min

(Oil) Lubrication Speed - 9 500 r/min

Bearing QJ307