Owners Manual • Rexnord
®
Planetgear
™
7000 Speed Reducers
(Page 22 of 33)
Size Mercury/Mars
158-110
10/21 (Supersedes 01/15)
© Rexnord Corporation. All Rights Reserved.
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NOTE
: Any gap between shaft and bearing cone can
result excessive axial bearing clearance or bearing
misalignment and ultimately result in premature
bearing damage.
7. Carefully set the housing, outboard side face down,
onto the outboard bearings.
8. While rotating the housing on bearings, apply clean oil
to the bearings.
9. Place the inboard bearing cone squarely on the inboard
end of the shaft with the smaller diameter of the
bearing facing the outboard. Reference
Figure 6.3.6.4
.
10. With an arbor press or a hydraulic press carefully push
bearing cone. When bearings begin to approach the
bearing cup, apply clean oil to inboard bearings.
OUTBOARD
BEARING CONE
CHECK
THIS AREA
FOR GAP
Figure 6.3.6.3 Checking for Zero Clearance with Feeler
Gauge
INBOARD END OF SHAFT
INBOARD
BEARING CONE
OUTBOARD
BEARING CONE
NOTE
: DO NOT push on bearing rollers or bearing cage.
Reference
Figure 6.3.6.2
.
11. Press inboard bearing until it touches the surface of
the bearing cup.
NOTE
: Do not over push bearings into cup. This might
cause the bearings to Brinell the cup.
NOTE
: An indication when the inboard bearing is fully
seated is when the hub will not rotate on the shaft
freely.
12. Clean and place the bearing spacer onto the shaft.
13. Clean and attach external retaining ring on output
shaft. If retaining ring was destroyed after disassembly,
replace with an Eaton 1065-R retaining ring external.
14. Hold housing on its side and with a blunt instrument,
rap on the inboard side of shaft. Reference
Figure
6.3.6.5
(next column).
Figure 6.3.6.4 Placing Inboard Bearing Cone onto Shaft
RETAINING RING
BEARING SPACER
Figure 6.3.6.5 Final Assembly of Output Shaft Housing
NOTE
: Shaft should be able to rotate freely at this time.
Replace seals after bearing clearance has
been established. No axial bearing clearance
measurements need to be taken.
6.4 SETTING PROPER AXIAL BEARING
CLEARANCES ON INPUT SHAFT
ASSEMBLIES
6.4.1 MEASURING AXIAL CLEARANCE ON
INPUT ASSEMBLY
1. Support housing to allow the shaft to rotate freely
(reference
Figure 6.4.1
).
NOTE
: Axial clearance should be checked while seals are
removed.
OUTBOARD SIDE
DIAL INDICATOR
HUB
C-CLAMP
SUPPORT
BLOCK
PRY BAR
SUPPORT
BLOCK
C-CLAMP
MAGNETIC BASE
Figure 6.4.1 Setting Axial Bearing Clearance
2. Affix the hub to the support table with C-Clamps or
bolting to table (reference
Figure 6.4.1
).
3. While exerting downward force by hand on the end of
the shaft, rotate shaft 6 to 10 times to align the bearing
rollers.
4. Use a dial indicator with a magnetic base to take
measurements.
