Nidec RINDCODE NRX Series Instruction Manual page 15

NRX - -N
with CORONET reducer ● For NRX □ -11K to 18K-C □ , follow the procedure on page 13.
● When reassembly of the speed change and reduction sections is complete after disassembly, adjust pressure contact
force according to the following procedure.
● When reassembling the speed change section, move the ring to the low speed end (output shaft) in advance.
● Procedure
(1) Put a rod (T-wrench) etc. into the ER flange adjustment hole, and align the ER flange and adjuster surfaces on the same level by turning the
adjuster. After that, assemble the main units of the speed reduction and change sections.
(2) Remove the top cover in the speed change section, look into the inside, and adjust pressure contact force by turning the adjuster with a rod (T-wrench)
etc. according to the following procedure.
(3) Check pressure contact force adjustment according to the tables below.
(Turning the adjuster clockwise increases contact force, and turning counterclockwise decreases contact force when viewed from the output shaft)
NRX □ -200B to 2200-N □
Adjust by cam retainer backlash
(4) Hold the cam retainer with pliers, etc., and check that the total
backlash is within the range of values in the table below.
If backlash is too large or small, turn the ER flange adjuster, and
make adjustment.
Cam retainer backlash
Model
200B/400B
750/1500
After adjusting to 1º to 3º, turn the adjuster by
2200
one pitch to increase contact force
1° to 3°
Cam retainer
(5) When shim (pressure contact force) adjustment is complete, secure the adjuster using the fixing bolt, and set the blind bolt on the other side.
Note : The fixing bolt is used to keep the adjuster from turning. Keep the tip of the bolt from coming into contact with the bottom of the adjuster.
(6) Set the dial.
*Refer to the procedure for the standard NRX □ on page 12.
Adjuster fixing bolt
ER flange
Align the surfaces
on the same level
Adjuster
Cover
1° to 3°
Cam retainer
Cam disc
Fixing bolt
Clearance
ER flange
NRX □ - 3700 to 7500-N □
Adjust by clearance between the cam disc and input cam
(4) Look into the inside of the speed drive, and check that clearance
between the cam disc and input cam is within the range of
values in the table below.
If clearance is too large or small, turn the ER flange adjuster,
and make adjustment.
Model
After adjusting clearance to 0 to 0.1 mm, turn the
3700 to 7500
adjuster by one pitch to increase contact force
Cam retainer
Input cam
ER flange
Blind bolt
Adjuster
14
Adjuster fixing bolt
Adjuster
Cover
To decrease
contact force
Rod (T-wrench)
To increase
contact force
Casting hole
Clearance of the cam disc
Clearance
Cam disc