Sumitomo Taper Grip User manual

www.sumitomodrive.com 1-800-SM-CYCLO 19.001.61.008
Page 1
Taper Grip® Bushing Installation Guide
Introduction
The keyless Taper-Grip® bushing system provides simple and reliable
shaft attachment for Sumitomo Speed reducers and gearmotors. This
system allows bi-directional shaft rotation and stop-start operation with
a powerful, slip-free grip. To assure peak performance of your equip-
ment, please read, understand and follow these installation instructions.
Safety
Disconnect all power sources from the equipment before beginning this
installation procedure. Handle the components with care and avoid all
sharp or machined edges to prevent personal injury or damage to the
components.
Before Installing Unit on Driven Shaft
(Steps 1-7)
Carefully inspect the driven equipment shaft. Remove all burrs, corrosion,
lubricants, and foreign matter from the shaft surface. Verify the shaft
diameter is within the dimensional tolerances shown in Table 1.
Table 1 Driven Shaft Tolerances
Shaft Diameter (inches) Shaft Tolerance (inches)
3/4” – 1-1/8” +0” – 0.0013”
1-3/16” – 2” +0” – 0.0015”
2-1/16” – 3-1/8” +0” – 0.0018”
3-3/16” – 4-3/4” +0” – 0.0021”
4-13/16” – 6-1/2” +0” – 0.0025”
Clean all surfaces of the shaft, the bushing, the thrust collar and the unit
bore with solvent to remove all grease and oil.
Step 1 – Remove the Taper-Grip® bushing safety cover (see Fig. 2).
Step 2 – Remove the cap screws from the bushing. Lightly oil the
threads of the cap screws and partially re-insert them into the threaded
holes in the bushing flange. The ends of the cap screws should not
extend beyond the rear face of the bushing flange.
Step 3 – Slide the thrust collar onto the Taper-Grip® bushing
(see Fig. 3).
Step 4 – Apply a thin layer of anti-seize paste to the male threads of
the Taper-Grip® Bushing only (see Fig.4). Based on tests, Sumitomo
recommends Bostik Never-Seez Regular Grade or equivalent. Ensure
that anti-seize paste does not enter the Taper-Grip® Bushing bore.
Caution: Do not apply anti-seize paste to the female threads in
the hub.
Step 5 – Carefully thread the Taper-Grip® bushing into the hub of the
speed reducer or gearmotor until the thrust collar solidly engages the
unit hub surface and the bushing flange (see Fig. 5). Caution: Do not
cross-thread. Bushing should thread easily into hub.
Step 6 – Unscrew the Taper-Grip® bushing to create a 1mm (0.04”) gap
between the thrust collar and the bushing flange.
Step 7 – Hand-tighten the cap screws until they firmly press the thrust
collar against the unit hub surface. The unit is ready for installation on
the driven shaft.
Fig. 1 Taper-Grip® Bushing Parts
Fig. 3 Slide Thrust
Collar on Bushing
Fig. 5 Thread
Bushing into Hub
Fig. 4 Apply
Anti-seize Paste
Apply thin layer of anti-seize
paste to male threads of
bushing only.
Fig. 2 Remove
Safety Cover

19.001.61.008 1-800-SM-CYCLO www.sumitomodrive.com
Page 2
Unit Installation
Step 8 – Position unit with the bushing flange located on the outboard
side of the unit. Align the bushing with the driven shaft. Slide the unit
onto the driven shaft as close to the driven shaft support bearing as
possible. Ideally, the driven shaft should extend beyond the bushing
flange face (see Fig. 7). Refer to Fig. 6 and Table 2 below for
minimum shaft to bushing engagement. For maximum depth to the
end of the shaft, refer to Fig. 6 and Table 3 below.
Table 2 Minimum Shaft to Bushing Engagement
Table 4 Cap Screw Tightening Torques
Fig. 6
Shaft Engagement
Fig. 7 Screw Tightening Sequence
Min. Shaft Engagement (TT)
Taper Grip® Bushing Installation Guide continued
Minimum Shaft Engagement
HSM Cyclo® HBB Cyclo® BBB4
Model mm in. Model mm in. Model mm in.
107C 119.5 4.70 Z113.5 4.47
115D 127.5 5.02
203E 136 5.35 A127 5.00 A209 8.23
207F 153 6.02 B144 5.67 B243 9.57
215G 183 7.20 C187 7.36 C280 11.02
307H 205 8.07 D205 8.07 D327 12.87
315J 215 8.46 E225 8.86 E360 14.17
407S 219 8.62 F412 16.22
415K 217 8.54
507L 285 11.22
608M 335 13.19
Maximum Depth to Shaft End
HSM Cyclo® HBB Cyclo® BBB4
Model mm in. Model mm in. Model mm in.
107C 31 1.22 Z31 1.22
115D 34 1.34
203E 35 1.38 A35 1.38 A35 1.38
207F 45 1.77 B45 1.77 B45 1.77
215G 40 1.57 C40 1.57 C40 1.57
307H 50 1.97 D50 1.97 D50 1.97
315J 51 2.01 E51 2.01 E51 2.01
407S 63 2.48 F74 2.93
415K 70 2.76
507L 70 2.76
608M 70 2.76
Table 3 Maximum Depth to Shaft End
Max.
Depthto
ShaftEnd(TS)
Step 9 – With a torque wrench, tighten the cap screws in 20% incre-
ments to engage the bushing system. Use the appropriate tightening
pattern (“star-pattern” see Fig. 7) to assure complete bushing engage-
ment. Tighten each cap screw to the torque values shown in Table 4.
If the shaft is recessed in the bushing, fill the void with grease to prevent
corrosion and fouling.
Step 10 – Please read, understand and follow the instructions shown in
the reducer/gearmotor installation and operating manual to complete
the unit installation and attach the torque arm.
Step 11 – After the reducer has been running for 20 to 30 hours, re-
torque the screws to the values in Table 4. Screw torques should be
subsequently checked at normal service intervals (i.e. every 6 months).
Cyclo®
HBB
Model
Cap screws
(JIS Grade 12.9)
Cap screw
Torque
Qty. Size Nm Lb.Ft.
Z6 M10x14 31 23
A6 M12x16 51 37.5
B6 M12x16 51 37.5
C6 M16x20 128 95
D6 M16x20 200 148
E8 M16x20 200 148
HSM
Model
Cyclo®
BBB4
Model
Cap screws
(JIS Grade 12.9)
Cap screw
Torque
Qty. Size Nm Lb.Ft.
107C 6 M10x14 50 37
115D 6 M10x14 55 41
203E A6 M12x16 75 56
207F B6 M12x16 140 104
215G C6 M16x20 250 185
307H D6 M16x20 300 223
315J E8 M16x20 300 223
407S F10 M16x20 300 223
415K 10 M16x35 300 223
507L 12 M16x35 300 223
608M 16 M16x35 300 223

www.sumitomodrive.com 1-800-SM-CYCLO 19.001.61.008
Page 3
Taper Grip® Bushing Installation Guide continued
Removal Procedure
Step 1 – Remove the Taper-Grip® bushing safety cover (see Fig. 8).
Fig. 9 Externally Support the Unit
Gap
Bushing
Flange
Thrust
Collar
Step 3 – Check the Taper-Grip® Bushing to assure that there is a gap
between the thrust collar and the bushing flange. If no gap exists,
unit removal may be difficult (see Fig. 10).
Step 4 – Spray a liquid penetrant onto each of the Taper-Grip®
Bushing cap screws. Allow time for the penetrant to settle into the
threads of the cap screws. (see Fig. 11).
Step 5 – After the liquid penetrant has been allowed to settle,
remove the cap screws one at a time (see Fig 12).
Fig. 12 Remove Cap Screws
Step 6 – Place a copper or brass bar against the flange of the Taper-
Grip® Bushing and carefully strike end of bar with a hammer to
release bushing (see Fig 13).
Fig. 13 Release the Bushing
Step 7 – After releasing the bushing, reinstall the cap screws by
hand only. Stop tightening them once they touch the thrust col-
lar. They will ensure the reducer will not slide against the bushing
and clamp it against the shaft when the reducer is removed. Apply
a liquid penetrant to the shaft where it contacts the bushing. Allow
time for the liquid to penetrate between the bushing and the shaft,
then carefully slide the unit off of the shaft. (see Fig 14). Note: If
the bushing releases, but the unit cannot be removed from the
shaft, apply a puller to the bushing to push the shaft free.
Fig. 11 Spray Penetrant
on Cap Screws
Fig. 14 Slide Unit Off the Shaft
Step 2 – Before removing the reducer/gearmotor from the driven
shaft, externally support the unit so that all its weight is removed
from the driven shaft (see Fig. 9). Caution: Do not raise the unit
too high. It may cause the shaft to bind.
Fig. 8 Remove the
Safety Cover
Fig. 10 Check Gap Between
Collar and Flange

Manual 19.001.61.008; Supersedes Manual 19.001.61.007
©2014 Sumitomo Machinery Corporation of America Printed in USA
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