Main Dimensions & Performance Data

d

240 mm

D

300 mm

B

28 mm

Mounting dimensions

Di

270.8 mm Inner diameter outer ring

DM

270 mm rolling element pitch circle diameter

da

269.2 mm outer diameter inner ring

h

28 mm height of individual ring

0 Height of individual ring upper tolerance

-0.025 Height of individual ring lower tolerance

r min

2 mm chamfer dimension

S

2 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

RLO max

0.005 mm Low clearance: Radial clearance

RLO max

0.01 mm Low clearance: Preload

Ca

149,000 N Basic dynamic load rating, axial

C0a

600,000 N Basic static load rating, axial

Cr

106,000 N Basic dynamic load rating, radial (only for radial loads)

C 0r

295,000 N Basic static load rating, radial (only for radial loads)

NG oil

565 1/min Limit speed for normal clearance oil lubrication

NG Grease

280 1/min Limit speed for grease lubrication with normal clearance

NG oil

280 1/min Speed limit for preload oil lubrication

NG Grease

140 1/min Grease lubrication with preload limited speed

61848 Dimensions are the same as ISO dimension series 18