Main Dimensions & Performance Data

d

300 mm

D

380 mm

B

38 mm

Mounting dimensions

Di

340.8 mm Inner diameter outer ring

DM

340 mm rolling element pitch circle diameter

da

339.2 mm outer diameter inner ring

h

38 mm height of individual ring

0 Height of individual ring upper tolerance

-0.05 Height of individual ring lower tolerance

r min

2.1 mm chamfer dimension

S

2.5 mm diameter of lubrication hole

Temperature range

T min

-30 °C Minimum operating temperature

T max

80 °C Maximum operating temperature

Calculation coefficient

0.02 mm Running accuracy, radial

0.01 mm Running accuracy, axial

Sr min

0.01 mm Minimum radial bearing clearance, standard bearing clearance

Sr max

0.04 mm Maximum radial bearing clearance, standard bearing clearance

Sk min

0.02 mm Minimum axial tilt clearance, standard bearing clearance

Sk max

0.08 mm Maximum axial tilting clearance, standard bearing clearance

RLO max

0.005 mm Low clearance: Radial clearance

RLO max

0.01 mm Low clearance: Preload

Ca

245,000 N Basic dynamic load rating, axial

C0a

990,000 N Basic static load rating, axial

Cr

174,000 N Basic dynamic load rating, radial (only for radial loads)

C0r

485,000 N Basic static load rating, radial (only for radial loads)

NG oil

450 1/min Limit speed for normal clearance oil lubrication

NG Grease

225 1/min Limit speed for grease lubrication with normal clearance

61860 Dimensions are the same as ISO dimension series 18