Timken Super Precision Bearings for Machine Tool Applications

ENGINEERING
A
SHAFT O.D. INCH BEARINGS
Deviation from nominal (maximum) bearing
bore and resultant fit
T= Tight
L = Loose
Bearing bore Class 3 Class 0
Range
Over
Incl.
Max. Min. Max. Min.
mm
in.
mm
in.
mm
in.
– 304.800 0.037T 0.013T 0.020T 0.007T
– 12.0000 0.0015T 0.0005T 0.0008T 0.0003T
304.800 609.600 0.077T 0.025T 0.037T 0.013T
12.0000 24.0000 0.0030T 0.0010T 0.0015T 0.0005T
609.600 914.400 0.114T 0.037T – –
24.0000 36.0000 0.0045T 0.0015T – –
914.400 1219.200 0.152T 0.051T – –
36.0000 48.0000 0.0060T 0.0020T – –
1219.200 – 0.191T 0.064T – –
48.0000 – 0.0075T 0.0025T – –
mm
in.
mm
in.
mm
in.
HOUSING BORE INCH BEARINGS
Deviation from nominal (maximum) bearing
O.D. and resultant fit
T= Tight
L = Loose
Bearing O.D. Class 3 Class 0
Range
Over
Incl.
Max. Min. Max. Min.
mm
in.
mm
in.
mm
in.
– 304.800 0.037T 0.013T 0.020T 0.007T
– 12.0000 0.0015T 0.0005T 0.0008T 0.0003T
304.800 609.600 0.077T 0.025T 0.037T 0.013T
12.0000 24.0000 0.0030T 0.0010T 0.0015T 0.0005T
609.600 914.400 0.114T 0.037T – –
24.0000 36.0000 0.0045T 0.0015T – –
914.400 1219.200 0.152T 0.051T – –
36.0000 48.0000 0.0060T 0.0020T – –
1219.200 – 0.191T 0.064T – –
48.0000 – 0.0075T 0.0025T – –
mm
in.
mm
in.
mm
in.
TIMKEN MACHINE TOOL CATALOG 87