Description

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234440-M-SP angular contact thrust ball bearings are separable, i.e. the washers and ball and cage assemblies can be mounted independently of each other. Although originally designed to support the rotary tables of drilling rigs, they are also suitable for other applications.

Bearing Features

• Accommodate axial and radial loads

• High load carrying capacity

• High axial stiffness

• Low friction

• High-speed performance

Drawing And Technical Data

d	200 mm
D	310 mm
B	132 mm
a	514,5 mm
B1	33 mm
C	66 mm
Da	291,5 mm	Tolerance: H12
d1	274 mm
da	245 mm	Tolerance: h12
ds	8 mm
ns	15 mm
r1 min	0,6 mm
ra max	2,1 mm
ra1 max	0,6 mm
rmin	2,1 mm
α	60 °	Contact angle
m	31,5 kg	Mass
Ca	285000 N	Basic dynamic load rating, axial
C0a	1060000 N	Basic static load rating, axial
Cua	61000 N	Fatigue limit load, axial
nG Fett	1800 1/min	Limiting speed for grease lubrication
nG Öl	2600 1/min	Limiting speed for minimal quantity oil lubrication
Fv	2000 N	Preload force
KaE	5704 N	Lift-off force The lift-off force is the force at which the row of balls released from load by an axial force acting concentrically on the bearing becomes free of load.
Ca	1449 N/µm	Axial rigidity The values are valid up to an axial force of 2,2% of the basic dynamic load rating Ca.