Trane QFNA-IOM-1 - Manual (Page 26)

Link-Belt P-300 Bearings
See Figure 14
1. Shaft must be clean and free of
nicks, burrs and rust. If bearing is
being replaced, be certain shaft is
straight and round.
2. Lubricate the shaft and bearing
bore. Be certain setscrews are
clear of bore.
3. Slide bearing on shaft with
setscrews facing toward drive. If it
is necessary to tap or press unit
on the shaft, use a hardwood
block or soft metal bar against the
end of the inner ring. Do not strike
or exert pressure on housing or
seals.
4. Bolt housing securely to support.
See Table 11 for bolt torques.
After visually checking alignment,
tighten setscrews to the torque
values given in Table 11.
5. Rotate shaft by hand to check
freedom of rotation. Any condition
of strain, irregular rotational
torque, abnormal sound or
vibration may be due to improper
alignment, improper location, bent
shaft, etc. Installation should be
rechecked and corrections made
as required.
Note: After installing or readjusting
bearings, wheel alignment and tip
clearances must always be
rechecked.
26 QFNA-IOM-1
Bearing Service
Figure 14—Link-Belt P-300 Bearing
Bearing Designation
and Bore (Inches)
Setscrew
Diameter (Inches)
Recommended Torque
Inch Lbs. Foot Lbs.
P-327 1-11/16 3/8 325 27
P-331 1-15/16 3/8 325 27
P-335 2-3/16 7/16 460 38
P-349 2-7/16 7/16 460 38
P-343 2-11/16 1/2 680 57
P-347 2-15/16 1/2 680 57
P-355 3-7/16 5/8 1350 113
P-359 3-11/16 5/8 1350 113
Table 11—Torques for Tightening Setscrews on Link-Belt P300 Bearings