Specifications

CAK50/CAK61 SERIES ERROR! USE THE HOME TAB TO APPLY 标题 1 TO THE TE
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SHENYANG MACHINE TOOL CO., LTD 33
SP1 and SP2 will alarm and the machine will stop.
 Tailstock Return
The tailstock return consists of relief valve, two-way and single-way throttles,
electromagnetic reversing valve and pressure relay. The relief valve MPR
—02A is
used to adjust the withstanding pressure of tailstock, the adjusting range of pressure is
1.0
～ 2.0Mpa and the tightening speed is adjusted by MT － 02W. With the
electromagnet YV3with electricity, the tailstock is withstood, as the electromagnet
YV3 electrified, the tailstock will be withstanding and with electromagnet YV4
electrified, the tailstock will withdraw.
The pressure relay PS
－70（SP3）will send out ready signal of tightening. During
machining, if the pressure goes down due to troubles of the system, SP3 will alarm
and the machine will stop. If the machine is without hydraulic tailstock, the return
will not be available.
 Maintenance of the hydraulic system
1)
It is necessary to apply YA-HL46 hydraulic oil or the hydraulic system, and the oil
shall be changed according to the using status regularly.
2) It is necessary to check the oil level in the oil tank often, and if the oil level is
lower than the lowest level, add oil in time.
3) It is necessary to add oil to the oil tank through the air filter.
4) The oil-suction filter shall be checked and changed periodically.
5) If there is abnormal noise or vibration from the hydraulic system, check and
maintenance must be carried out immediately.
 Adjusting value of hydraulic system parameter
Name Adjusted Element Adjusted Value
System pressure Pump VPVC－F－20－A－2－02 2.0MPa（2.0～2.5MPa）
Pressure of chuck
clamping
Relief valve
MPR
－02A－K－0－20
1.5MPa
（1.2～2.5MPa）
Clamping signal
Pressure relay
PS
－70 ( SP1 ) ( SP2 )
Same as the pressure of relief
valve of the chuck
Withstanding
pressure of the
tailstoc
k
Relief valve
MPR
－02A－K－0－20
1.2MPa
（1.0～2.0MPa）
Withstanding signal
Pressure relay PS
－70（SP3）
Same as the relief valve of the
tailstock
Chuck speed Max. flow of the pump Depending on requirement
Tailstock speed
Throttle MJ
－02W－K－20
Depending on requirement
Note:The value in the ( ) is the adjustment range which depends on the state of the