Sumitomo Beier Variator Series User Manual

26
8-7) Maintenance of Motor Bearing
The maintenance for Sumitomo standard 3-phase motor is shown below.
(Refer to the respective instruction manuals for the brakemotor , other companies' motor , etc.) Bearing No. and
maintenance methods also differ according to motor size. Before maintenance, check the bearing type on the rating plate
and Table 36.
Bearing type
Shield bearing
Motor frame size
Note
No grease nipple
Load side Opposite side
Smaller than #225 All
Open bearing With grease nipple and discharge plug#250 —
Table 36 Bearing Type
Grease replenishment for open bearing
(1) Grease Replenishment Intervals and Quantity
Check the bearing No, on the rating plate, refer to Table 37 and supply grease.
Bearing No.
Dimension (mm)
Initial q'ty
(g)
Replensihed
q'ty (g)
Grease replenishment interval (h) for each rotation speed (
r/min
) of motor
750r/min 900r/min 1000r/min 1200r/min 1500r/min 1800r/min
I. D O. D W
6314 70 150 35 200 40 8500 7000 6000 5000 3500 2500
6315 75 160 37 230 45 8500 6500 6000 4500 3500 2500
6316 80 170 39 260 50 8000 6500 5500 4500 3000 2500
6317 85 180 41 300 55 7500 6000 5000 4000 3000 2000
6318 90 190 43 350 60 7000 5500 5000 4000 2500 2000
6319 95 200 45 400 65 7000 5500 4500 3500 2500 1500
6320 100 215 47 450 70 6500 5000 4500 3500 2000 1500
6321 105 225 49 500 75 6000 5000 4000 3000 2000 1500
6322 110 240 50 550 80 6000 4500 4000 3000 2000 1000
6324 120 260 55 700 100 5500 4000 3500 2500 1500 1000
6412 60 150 35 200 40 8500 7000 6000 5000 3500 3000
6413 65 160 37 230 45 8000 6500 6000 4500 3500 2500
6414 70 180 42 300 55 8000 6500 5500 4500 3000 2500
NU314 70 150 35 120 40 4000 3500 3000 2500 1500 1000
NU315 75 160 37 150 45 4000 3000 3000 2000 1500 1000
NU316 80 170 39 200 50 4000 3000 2500 2000 1500 1000
NU317 85 180 41 250 55 3500 3000 2500 2000 1500 1000
NU318 90 190 43 300 60 3500 2500 2500 2000 1000 1000
NU319 95 200 45 350 65 3500 2500 2000 1500 1000
NU320 100 215 47 400 70 3000 2500 2000 1500 1000
NU321 105 225 49 450 75 3000 2500 2000 1500 1000
NU322 110 240 50 500 80 3000 2000 2000 1500 1000
NU324 120 260 55 650 100 2500 2000 1500 1000
21312 60 130 31 70 30 1500 1000 1000 800
• "Initial q'ty" shows quantity of grease for disassembled and cleaned inside of the unit. Paint 1/3 of grease with the
inner lace of bearing and replenish other with inside of the unit.
• "Replenished q'ty" shows quantity of grease for every replenishment.
• For intermittent operation, replenish grease every 3 years or less.
• For long-term stoppage replenish grease just after operating.
Table 37 Grease Replenishment Intervals and Quantity for Open Bearing
Maintenance of shield bearing
Shield bearing is supplied with good lubricating grease in advance. Although grease replenishment is not necessary,
exchange of bearing every 20,000 operational hours or once in 3-5 years in normal operating condition at the time of
overhaul, enables more unfailing operation.
• Use CM class (clearance) bearing for the motor bearing.
• Use grease (Kyodo Yushi : Multemp SRL) lubricated bearing for the sealed motor bearing.
• Reduce the supply interval when the operating conditions are severe.

Sumitomo Beier Variator Series Specifications

General

Brand	Sumitomo
Model	Beier Variator Series
Category	Engine
Language	English