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NSK NU338EM bearing

Bearing NU338EM

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.

Cylindrical roller bearings NU338EM

Bearing number : NU338EM

Size (mm) : 190x400x78

Brand : NSK

Bore Diameter (mm) : 190

Outer Diameter (mm) : 400

Width (mm) : 78

Bearing dimensions and specification in NSK catalogue:

d - 190 mm

Fw - 245 mm

D - 400 mm

B - 78 mm

C - 78 mm

r min. - 5 mm

r1 min. - 5 mm

da min. - 210 mm

Da max. - 380 mm

db max. - 240 mm

db min - 210 mm

ra max. - 4 mm

rb max. - 4 mm

S - 1,7 mm

Weight - 50,6 Kg

Basic dynamic load rating (C) - 1060 kN

Basic static load rating (C0) - 1340 kN

(Grease) Lubrication Speed - 1 400 r/min

(Oil) Lubrication Speed - 1 700 r/min

Bearing NU338EM