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Owners Manual s Rexnord ® Planetgear™ 7000 Series Speed Reducers
(Page 20 of 32) Sizes Neptune, Neptune Plus, Orion Plus, Saturn Plus & Titan Plus
158-170
Rexnord
January 2015 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 11-12 Telephone:414-342-3131 Fax: 414-937-4359 www.rexnord.com
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.
NOTE : It is helpful to use a crane to lift hub onto shaft;
reference Figure 6.3.5.4.
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 6.3.5.5.
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.
INBOARD SIDE
INBOARD
BEARING CONE
OUTBOARD
BEARING CONE
Figure 6.3.5.5 — Placement of Inboard Bearing Cone on
Shaft
BACKSTOP
ASSEMBLY
BACKSTOP
PAWLS
CLOCKWISE ROTATION
OF OUTPUT SHAFT
COUNTER-CLOCKWISE ROTATION
OF OUTPUT SHAFT
Figure 6.3.5.6 Backstop on Input Assembly
NOTE : DO NOT push on bearing rollers or bearing
cage; reference Figure 6.3.5.2.
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. INPUT ONLY - Clean and place the backstop or
backstop spacer onto the shaft.
NOTE : The desired rotation of the reducer is
determined by viewing thru the output shaft side.
Reference Figure 6.3.5.6 for orientation of the backstop
after being assembled onto the input shaft.
6. With a 0.001” or 0.040 mm mm feeler gage, make sure
that there is no gap between the shaft shoulder and the
bearing cone to insure proper cone seating; reference
Figure 6.3.5.3.
OUTBOARD
BEARING CONE
CHECK
THIS AREA
FOR GAP
Figure 6.3.5.3 Checking for Zero Clearance with Feeler
Gauge
OUTBOARD
BEARING CONE
SHAFT
PILOT
INBOARD SIDE
CHAIN
EYEBOLT
Figure 6.3.5.4—Placing Housing onto Shaft Assembly
13. Clean and place the tongued washer onto the shaft.
14. Clean clampnut. Place it with the grooved side down
(or groove towards bearings) and thread on clampnut
until it is unable to rotate.
15. Mark the location of the clampnut.
16. Loosen clampnut approximately
¾ ” (19 mm) from
original mark.
17. Tighten socket head cap screw on clampnut; reference
Table 15, Page 23.
18. Support hub and affix to work table with the shaft not
touching the table; reference Figure 6.4.1. (Page 21).