Sumitomo CYCLO Service Manual

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8. Daily Inspection and Maintenance
8-6 Motor Bearing Maintenance
Bearing type and maintenance technique will vary according to motor frame size. When maintaining, conrm the bearing type by
referring to the nameplate and Table 8-14.
When using a vector motor, other manufacturer’s motor (There are some models made by other manufacture.), refer to the operation
manual for that motor.
Table 8-14 Bearing Types
Bearing type
- Specied motor (frame size)
Remarks
Load side Anti-load side
Sealed bearing
- Motor frame size 160 and lower
- Motor frame size 180 and higher, at the same
time Cyclo frame size 6225 and lower
All motors except the following.
Not constructed for
lling or draining
grease
Open bearing
- Motor frame size 180 and higher, at the same
time Cyclo frame size 6235 and higher
-MotorframesizeF-200L(increasedsafety,
explosionproof),
at the same time
Cyclo
framesize6255and6265
With grease tting
and grease discharge
plug
(1) Sealed Bearing Maintenance
Although it will depend on operation conditions, maintenance with disassembly after approximately 20,000 hours or 3 to 5 years will
further increase lifetime.
Contact the nearest authorized service station regarding maintenance with disassembly.
(2) Open Bearing Maintenance
Check the bearing number on the nameplate, and replenish grease in accordance with with Table 8-15.
Table 8-15 Open Bearing Grease Replenishment Intervals and Replenishment Quantity
Bearing number
Replenishment
quantity (g)
Grease replenishment interval (interval (h) for speeds (r/min))
720 r/min 870 r/min 980 r/min 1165 r/min 1450 r/min 1750 r/min
NU314 40 4000 3500 3000 2500 1500 1000
NU315 45 4000 3000 3000 2000 1500 1000
NU316 50 4000 3000 2500 2000 1500 1000
NU317 55 3500 3000 2500 2000 1500 1000
NU318 60 3500 2500 2500 2000 1000 1000
21312 30 1500 1000 1000 800 - -
- The replenishment quantity is the quantity to insert at each interval.
- Even in the case of intermittent operation, replenish grease approximately every 3 years.
- If the machine is rested for a long time, replenish grease immediately after resuming operation.
(3) Recommended Grease for Open Bearings
Table 8-16 Recommended Grease
Ambient temperature
℃
Open Bearing
Thermal class 130 (B) Thermal class 155 (F)
Mobil Shell
−10 to 40 UNIREX N2 Shell Stamina Grease RL2
Avoid using grease other than that listed in Table 8-16.

Sumitomo CYCLO Specifications

General

Control Method	PWM (Pulse Width Modulation)
Cooling Method	Forced air cooling
Protection Features	Overcurrent Protection, Overvoltage Protection, Overtemperature Protection, Short Circuit Protection
Operating Temperature	0°C to 40°C
Humidity	20% to 90% (non-condensing)
Dimensions	Varies by model
Weight	Varies depending on model (Consult specific datasheet)
Storage Temperature	-20°C to +60°C