Preventative Maintenance for your CNC Machine

To avoid unplanned downtime and to take care of your investment, here are some preventative maintenance for your CNC Machine, via Robbie Williams of Okuma America Corp.

Daily Care
1. Check the hydraulic pressure to make sure it’s at 4.5 MPa
2. Check the hydraulic fluids to make sure they’re at the right operating level.
3. Check to make sure the chuck pressure is at the right operating pressure.
4. Make sure the way lube level is at the right operating level, and replenish if needed.
5. If your CNC machine has a cooling system, make sure the cooling unit level is at the right operating level.
6. Clean the chips out of the chip pan, and grease any part that may need to be greased.
7. Clean off the window of the door and the light so you can see inside your machine.
8. Wipe down any stainless steel way covers and lubricate them with hydraulic oil so they move smoothly.

Every 3 Months or 500 Hours
1. Check and grease the chain on the chip conveyor.
2. Check and clean the filters on the coolant tank.

Every 6 Months or 1000 Hours

1. Have the coolant tank cleaned of sludge, chips and oil.
2. Have the chuck and jaws taken off the machine and cleaned
3. Have the hydraulic tank drained and replace the hydraulic oil with fresh hydraulic oil – also have the line filter and suction filter changed
4. Have the radiator cleaned and make sure the radiator fins are straight.
5. Have the lubrication unit drained and cleaned out – then add fresh way lube
6. If your machine is equipped with a cooling unit, have the unit drained and refilled.
7. Have the leveling of your machine checked and adjust if necessary.
8. Have all way wipers inspected for any damage – clean and replace any wipers that are damaged.

Once a year or every 2000 Hours
1. Have the headstock checked for taper.
2. Have the spindle checked for radial and end play.
3. Have the chuck cylinder checked for run out.
4. Have the tailstock checked for taper.
5. Have the turret parallelism and inclination checked.
6. Have your distributor run a blacklash program to check the backlash in X and Z axis and adjust if necessary.
7. Have your distributor check the X and Z axis gibs and adjust if necessary.

We understand that no one wants to have their CNC machine down without a reason because if your machine is not producing - you’re losing time and money. However, having a preventative maintenance program gives your facility the opportunity to manage your schedule instead of being caught off guard. In his article, Robbie makes a good point – If you take care of your machine, it will take care of you.

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For more information, contact your local JIS Technical Field Salesman or our Customer Service!

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