Page 17 - Craft Bearing Catalog

Lubrication Installation Guide for Craft Split Roller Bearings
n Tool List
• Micrometer to suit shaft size
• SAE Allen wrench set
• Torque wrench
• Anti-seize compound
• Means to lift and safely support shaft
during bearing installation
• Rubber mallet
• Channel locks
• Feeler gauge set
• Strap wrench
• /8” diameter straight shank drift pin
1
• Clean, lint free cloth
• Appropriate viscosity lubricant
INSTRUCTION #1: Check the Shaft
2 Bearing Installation Preparation
ndividual bearing components should not
Ibe interchanged. The components of each
bearing are matched at the factory for proper
fit and internal clearance. To facilitate proper
assembly, all Craft split bearings are provided
with match mark numbers at the mating faces of
the individual components. Be sure to completely
disassemble the bearing components, remove
all protective plastic, and wipe the oil from all
surfaces at installation.
Craft Bearing Company, Inc. n Newport News, Virginia n www.craftbearing.com Craft Bearing Company, Inc. n Newport News, Virginia n www.craftbearing.com 15
Craft Bearing 2017 Catalog + Spe15
Bearing Company Inc.
1 Check the Shaft
efore mounting any components, the shaft
Bshould be checked at the intended location
of the bearing for diameter, roundness, taper,
and conformity to a straight edge. The tolerance
of the shaft’s diameter is +0.000” to -0.004”,
where the dn < 2,000, and +0.000” to -0.002”,
where the dn > 2,000. The shaft’s roundness and
taper tolerance is ±0.001” and the surface finish is
to be 125 to 63 μin. Remove any rust, nicks, burrs,
high spots, and ensure that the shaft is clean and
dry before mounting any components. Use the
reference images below as a reference for how
to check the shaft.
The shaft should be raised and fully supported
before installing the bearing. It is good practice to
locate shaft position, and install the held (fixed)
bearing first. This practice serves to anchor the
shaft in position and facilitate proper positioning
for the expansion bearing on the shaft.
15 8/14/17 1:51:26 PM