Sharp SV2414, Maintenance Manual

Page: 19 / 132

PRECISION MACHINE TOOLS
Ver 1 Maintenance Manual
19
2-3 Spindle Warm-up
This is an aerosol lubrication design, and so before turning on the machine, follow the warm-up steps
below to extend the lifespan of the spindle and to avoid damaging the bearing by letting the oil
aerosol getting into the bearing ahead
.
Spindle warm-up time
Item Condition
Spindle RPM
(Maximum RPM %)
Rotation Time
( min )
Check Contents
1 Routine operation Max Rpm 20% 10
1. Less than 10°C
increase of
temperature
2. Shocks
3. Noises
2
If the spindle has been
stopped for more than two
hours, warm-up is
compulsive.
20% 10
1. Less than 10°C
increase of
temperature
Shocks
2. Noises
3
Spindle stopped for more
than 72 hours
1. 20%
2. 50%
10
10
1. Less than 10°C
increase of
temperature
2. Shocks
3. Noises
4
Spindle stopped for more
than 2 weeks
1. 500 RPM
2. 20%
3. 40%
4. 60%
5. 80%
6. Maximum RPM
60
10
10
*10
*10
*10
Less than 10°C
increase of
temperature Shocks
Noises
4. Do not go onto the
next step until the
temperature has
become stable.