Maintenance Of Motor Bearing - Sumitomo PARAMAX 9000 Betriebsanleitung

PA R A M A X 9 O p e r a t i n g M a n u a l

9.4 Maintenance of motor bearing

The following instructions apply when using SUMITOMO standard 3-phase motor .
Refer to the relevant instruction manual when using motors with brake, servomotors , DC
motors and motors made by other companies.
Bearing types and maintenance methods vary according to the frame sizes of the unit.
Choose the proper maintenance method by checking the nameplate and the bearing type in
Table 24.
Bearing Type
Sealed bearing
Open bearing
Maintenance of sealed bearing
Since sealed-type bearing is filled with high quality grease from the factory, it is not necessary
to replenish grease at the initial operation. Under normal operation, exchanging bearing once
every three-five years or every 20,000 hours at disassembly or maintenance is recommended
for reliable operation.
Use CM class bearings.
Use "MULTEMP SRL (Kyodo Yushi)" lubricants.
Under sever usage conditions, change bearing more frequently.
When using forced ventilating motor, replacement of cooling fan every 15,000 hours running is
recommended because the bearing life of fan motor is 15,000 to 20,000 hours.
Maintenance of open bearing
Grease replenishing time and quantity
Checking the bearing number in the nameplate, replenish grease in according to Table 25.
Table 25 Grease maintenance schedule
Bearing No.
6314
6315
6316
6317
6318
6319
6320
6321
6322
6324
6412
6413
6414
NU314
NU315
NU316
NU317
NU318
NU319
NU320
NU321
NU322
NU324
Initial quantity shows replenished quantity after disassembling and cleaning the bearings.
Supply about 1/3 of the quantity to inside of the bearing and the rest of it to inner space.
Replenishing quantity indicates grease amount poured into the bearing every interval.
Even though the bearing is run with intermittent operation, replenish grease at least every three
years.
Replenish grease right after starting operation after a long shut down.
PX9_DEU_ENG_11_2007_999345
Motor size
A-Side
225 or smaller
250 or smaller
Dimension
Initial quantity
Inner dia. Outer dia. Width
70 150 35
75 160 37
80 170 39
85 180 41
90 190 43
95 200 45
100 215 47
105 225 49
110 240 50
120 260 55
60 150 35
65 160 37
70 180 42
70 150 35
75 160 37
80 170 39
85 180 41
90 190 43
95 200 45
100 215 47
105 225 49
110 240 50
120 260 55
B-Side
250 or larger
Replenishing
Replenishing time (interval corresponding to rotation speed r/min)
quantity
(gram)
750r/min
(gram)
200 40 8500
230 45 8500
260 50 8000
300 55 7500
350 60 7000
400 65 7000
450 70 6500
500 75 6000
550 80 6000
700 100 5500
200 40 8500
230 45 8000
300 55 8000
120 40 4000
150 45 4000
200 50 4000
250 55 3500
300 60 3500
350 65 3500
400 70 3000
450 75 3000
500 80 3000
650 100 2500
Remarks
No construction for supplying or
draining grease
With grease nipple and drain
plug
900r/min 1000r/min 1200r/min 1500r/min
7000 6000 5000 3500
6500 6000 4500 3500
6500 5500 4500 3000
6000 5000 4000 3000
5500 5000 4000 2500
5500 4500 3500 2500
5000 4500 3500 2000
5000 4000 3000 2000
4500 4000 3000 2000
4000 3500 2500 1500
7000 6000 5000 3500
6500 6000 4500 3500
6500 5500 4500 3000
3500 3000 2500 1500
3000 3000 2000 1500
3000 2500 2000 1500
3000 2500 2000 1500
2500 2500 2000 1000
2500 2000 1500 1000
2500 2000 1500 1000
2500 2000 1500 1000
2000 2000 1500 1000
2000 1500 1000
Page 27
1800r/min
2500
2500
2500
2000
2000
1500
1500
1500
1000
1000
3000
2500
2500
1000
1000
1000
1000
1000