Specifications

BEARING INSTALLATION
1. Remove all burrs and raised edges from bores for bearings.
2. Place faceplate or backplate on a press base with milled face upward. Support endplate so that milled face
is perpendicular (square) with press ram.
3. Position endplate so that one bearing bore is located directly under press ram.
4. A.) If iron or bronze bearings are to be installed, lubricate endplate bores with a light oil that is compatible
with product to be pumped.
B.) If carbon bearings are to be installed, lubricate bearings by submerging them in cold water prior to
installation.
C.) If glass/graphite filled PTFE bearings are to be installed, no lubricant should be used.
5. Place end of new bearing at entrance of bore in endplate, taking care to align grooves in bearing with the
grooves in face of endplate.
6. Press bearing into endplate bore. When carbon bearings are being installed, it is important to press them
in with one slow uninterrupted stroke to prevent cracking. It is best to use a stepped arbor with a few
thousandths of an inch clearance between arbor and bore of bearing. Be sure to press bearings in until
they are flush to .005 of an inch [.127 mm] below milled face of endplate.
7. Repeat procedure for second bearing.
8. Using a three square file, file shallow grooves in ends of bearings to connect grooves inside bearings with
groove on milled face of endplate. If your bearings or endplates do not have grooves, omit this step.
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