7
Installation of spindle
8
How to supply air for debris protection
9
Guidance for belt installation
10
Break-in procedures
11
Pulley removal procedures
12
Cautions when using grindstone
13
Trouble shooting
When installing spindle on a holder, it is not recommendable to fix the spindle with a fastening bolt directly
as shown in Fig. 6 because the sheath is deformed and creates rotating malfunction, heat generation, etc.
Therefore, the installation as shown in Fig. 7 is recommended. In case it is impossible, install it as shown
in Fig. 8.
Fig. 6
Fig. 7
Fig. 8
Fastening Bolt
Fastening Bolt
Fastening Bolt Slit of Bush
Slit
Bush with Slit
Use a standard screw driver to remove the screw and screw in
a M5 0.8 thread quick disconnect fitting.
For spindles with 2 sealing screws you can use either location.
Supply clean, dry air between 0.1-0.3 MPa pressure.
(Please use caution as contaminated air will void warranty.)
For high speed operation increase belt tension to prevent slipage. During normal speed operation please
reduce belt tension to increase rear bearing life.
If the motor pulley and spindle pulley are offset high speed rotation will produce excess vibration, causing
heating build up and reduced life expectancy.
Please limit pulley center to center offset to less than 0.2mm.
Please follow the belt makers usage guidelines.
CAUTION :
Please cover all rotating parts to prevent injury.
Danger : Do not use beyond the peripheral speed of 2,000m/min. because it is dangerous.
Fig. 9
PS Series spindles are high speed spindles, but the following break-in procedures are necessary.
During shipping and storage grease settling will occur. If the spindle is rotated at high speed quickly.
Uneven grease coverage will cause heat build up and bearing damage.
After initial fixturing please follow the break-in procedures to insure optimal life expectancy.
Please follow the break-in schedule in table 3.
Table-3 Break-in schedule
Step
1
2
3
4
Maximum
allowable speed
Duration
Checkpoint
30%
15 minute
No abnormal noise
60%
10 minute
80%
10 minute
Same as step 2.
100%
15 minute
Spindle outer case
approximately 20˚C.
Spindle case should be
less than 20˚C. If case
temperature exceeds
20˚C, please shut down
for 20 minutes. After 20
minute cool down
period restart from step
1. If overheating
continues please check
spindle fixture.
Remove the pulley set screw, use a pulley removal tool to remove pulley. Please male a plate to insert
between the pulley removal tool jaws and the pulley to aid in removal.
Plate
Fig. 10
1
2
3
Follow the recommended speed by the manufacturers when using drill, end mill, etc. Do not use them
beyond the recommended speed because it becomes the cause of malfunction.
Make sure the tool shank is clean. If foreign materials and any debris are left in the collet chuck, they
will affect T.I.R specifications.
The recommendable peripheral speed of vitrified grindstone is within the range of 600 to 1,800m/min.
Peripheral speed =
D= Grindstone Diameter
N= Grindstone rpm.
D N
1,000
4
Mount a stemmed grindstone within 13mm of over-hanging
mode. When mounting a stemmed grindstone longer than
13mm over-hanging mode, use it by slowing down the motor
speed. (Fig. 11, Table-4)
Fig. 11
Table-4
Over-hang(mm)
20
25
50
(min
–1
)
N 0.5
N 0.3
N 0.1
5
6
7
8
9
10
11
Do not use a poor quality and run-out grindstone with cracks and scratches.
Try to use a grindstone after dressing is made.
In case of grinding, the depth of cutting in one cycle is within 0.02mm.
The depth of cutting for single phase grinding is 0.01mm. After one cycle of grinding, repeat reciprocating
motion few times and start next cycle of grinding.
Follow the recommended speed by the manufacturers when using drill, end mill, etc. Do not use them
beyond the recommended speed because it becomes the cause of malfunction.
Make sure the tool shank is clean. If foreign materials and any debris are left in the collet chuck, they
will affect T.I.R specifications.
Do not give an excessive shock and do not disassemble uselessly.
It is dangerous to run the run-out grindstone with cracks and bent shank in a high speed suddenly because the
grindstone may be broken of explode and shank may be bent or broken. When rotating a new grindstone or
grindstone without dressing is made, run it with a low air pressure and increase the speed gradually after
confirming the safety.
Table-5
Phenomenon
Probable Cause
Corrective Action
Vibration of bur
Foreign substance sticking in side
chuck or spindle
Clean chuck and spindle interior
In correct chuck nut setting
Set chuck nut correctly
Bearings worn out
Replace bearings at service center
Noise and abnormal
vibration
Foreign substance sticking in
bearings
Replace bearings at service center
Bearings worn out
Tools bent
Replace with proper tool
In correct installation of belt
Adjust or replace
No rotation
Bearings broken
Replace with new bearings at
service center
’06.11.003 S
13mm
