Nidec RINDCODE NRX Series, Инструкция по эксплуатации

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Note : Since models larger than the medium-scale type (1.5 kW type), and those equipped with the reducer have heavy parts, hoist or crane equipment may be required at the time of disas -
sembly and reassembly.
Note : When disassembly and reassembly are performed by our workers, please have your company remove and mount the speed drive.
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● Perform reassembly in the reverse order of disassembly.
● Put packing in joint parts between the M flange/output shaft holder/motor and the
main unit housing/covers. In such cases, replace deformed or cracked packing with
normal one.
* When reassembly is complete, adjust pressure contact force inside according to
“6-3 Shim (pressure contact force) adjustment” .
● Since shim (pressure contact force) has been sufficiently adjusted at shipping, readjustment is not necessary before use.
When disassembly and reassembly have been performed due to unavoidable circumstances, readjust shim according to the following procedure.
NRX □
*For models with the reducer, refer to the respective page.
● Adjustment procedure
When reassembly is complete after disassembly, in order for the “automatic pressure adjustment mechanism” to function effectively, adjust pressure
contact force using the shim inside the bearing cover.
･When reassembling the speed change section, move the ring to the low speed end (output shaft) in advance.
● Procedure
(1) Tighten the bearing cover completely.
(2) Mount a pulley on the output shaft, and manually turn the pulley from side to side to seat internal parts.
If problems or malfunction have occurred in the unit, and disassembly inspection is required, refer to the disassembly and reassembly figures on the following
pages, and perform accordingly
(refer to “ 5 Troubleshooting” on page 11).
(3) When turning the pulley from side to side, check that output shaft
backlash is within the range of values in the table below.
If backlash is too large or small, remove the bearing cover, and
adjust to the normal value by increasing or decreasing the shim
(0.1 mm to 0.2 mm thick).
(3) Remove the top cover.
(4) Look into the inside of the main unit, 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, remove the bearing cover, and adjust to the
normal value by increasing or decreasing the shim (0.1 mm to 0.2 mm thick).
NRX □ -3700 to 18K
Adjust by clearance between the cam disc and input cam
NRX □ -200B/400B
NRX □ -750 to 2200
Adjust by output shaft backlash
Model Output backlash
200B/400B
750/1500
1° to 3°
2200
After adjusting to 1º to 3º,
add a shim 0.2 mm thick.
Model Clearance of the cam disc
3700 to 18K
Adjust clearance to 0 to 0.1 mm, and add a
shim 0.1 mm to 0.15 mm thick (0.05 mm to 0.1
mm thick when applying pressure).
Cam retainer
1° to 3°
Shim Shim
Input cam
Cam disc
Clearance
6-1 Disassembly procedure
6-3 Shim (pressure contact force) adjustment
6-2 Reassembly procedure
(5) When shim (pressure contact force) adjustment is complete, mount the top
cover, and set the dial.
Under no load, align the mating mark with 0 (zero) for NO LOAD on the dial,
and tighten using the bolt.
(4) When shim (pressure contact force) adjustment is complete,
mount the top cover, and set the dial.
Under no load, align the mating mark with 0 (zero) for
NO LOAD on the dial, and tighten using the bolt.
(1) Remove the plug from the oil drain port, and drain oil completely.
(2) Remove the top cover.
(3) Remove the output shaft assembly from the main unit.
(4) Remove the cam assembly from the output shaft assembly.
(5) Remove the cone assembly.
(6) Remove the ring assembly.
(7) Remove the input disc from the motor shaft.
・ Inspection & Washing
・ After disassembly, inspect each part, and wash all parts with washing oil.
・ Replace defective parts with normal ones.
Keep all disassembled parts away from dust
until reassembly.
Disassembly & Reassembly