Installation
21
Combination type-hollow shaft at gearhead
If a large impact occurs at instantaneous stop or a large radial load is applied, use a stepped load shaft.
•
Apply grease (molybdenum disulde grease, etc.) on the surface of the load shaft and inner walls of the hollow
output shaft to prevent seizure.
•
When installing a load, do not damage the output shaft or the bearings. Installing the load forcibly with a
hammer or the like may break the bearings. Do not apply any excessive force to the output shaft.
•
Do not modify or machine the output shaft.
This may damage the bearing, resulting in damage to the motor and gearhead.
z
Stepped load shaft
Secure the retaining ring for hole to the load shaft by tightening the hexagonal socket head screw over a spacer, plain
washer and spring washer.
Plain washer
Spacer
Retaining ring for hole
rallel key
Spring washer
Hexagonal socket head screw
Retaining ring for hole
Hollow output shaf
t
Hexagonal
socket
head screw
Spring washer
Plain washer
Spacer
Parallel key
Load shaft
ØD
z
Non-stepped load shaft
Install a spacer on the load shaft side and secure the retaining ring for hole to the load shaft by tightening the
hexagonal socket head screw over a spacer, at washer and spring washer.
Plain washer
Spacer
Retaining ring for hole
Spring washer
Hexagonal socket head screw
Spacer
rallel key
Spacer
Retaining ring for hole
Hollow output shaf
t
Hexagonal
socket
head screw
Plain washer
Spacer
Parallel key
Load shaft
Recommended load shaft installation dimensions [Unit: mm (in.)]
Model
Inner diameter of
hollow shaft (H8)
Recommended
diameter of load
shaft (h7)
Nominal
diameter of
retaining ring
Applicable
screw
Spacer
thickness
Outer diameter
of stepped shaft
(ØD)
BLMR5100
Ø20
(Ø0.7874
)
Ø20
(Ø0.7874
)
Ø20 (Ø0.79) M6 5 (0.20) 30 (1.18)
BLMR6200
Ø25
(Ø0.9843
)
Ø25
(Ø0.9843
)
Ø25 (Ø0.98) M8
6 (0.24)
[3 (0.12)] *
40 (1.57)
* The value in the brackets [ ] is that when using the rear side as the mounting surface.
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