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CNC MACHINING CENTERS (MILL)
PREVENTATIVE MAINTENANCE CHECKLIST

Machine: __________________________

Serial #: __________________________

Date: __________________________

Control Model: __________________________

Serial #: __________________________

Serviced By: __________________________

HYDRAULIC SYSTEM: COMMENTS:

_____Drain hydraulic tank ______________________

_____Clean hydraulic heat exchanger ______________________

_____Clean tank inside ______________________

_____Clean motor fan and cooling fans ______________________

_____Clean suction filter ______________________

_____Clean or Replace Return filter ______________________

_____Refill tank 20 gallons ______________________

_____Adjust pressure 750 PSI ______________________

_____Check Hydraulic Counter Balance pres. 430 PSI _____________

_____Drain and change oil in spindle ______________________

AIR SYSTEM:

_____Drain Water Trap ______________________

_____Clean Water Trap ______________________

_____Refill Oiler Type __________________________

_____Adjust Pressure____PSI ______________________

_____Adjust Oiler ____drops ea. every _________________________

WAY LUBE SYSTEM:

_____Drain Way Lube Tank ______________________

_____Clean Tank Inside ______________________

_____Check Volume Adjustment ______________________

_____Clean In Line Out Put Filter ______________________

_____Clean/Change Intake Filter ______________________

_____Refill Tank With Vactra #2 ______________________

_____Check/Replace Flow units

QTY____ Type________________________________

QTY____ Type________________________________

QTY____ Type________________________________

QTY____ Type________________________________

_____Check Axis Lubrication

"X" Axis ______________________

"Y" Axis ______________________

"Z" Axis ______________________

TIMING ADJUSTMENT:

_____Tool Magazine Up/Down ______________________

_____Tool Magazine In/Out ______________________

_____Clean Tool Magazine Cam Followers ______________________

_____Clean & Grease Atc Cam ______________________

_____Grease ATC Magazine Ways ______________________

_____Grease Counter Balance Chain ______________________

_____Check Belts/Adjust _____ Deflection ______________________

_____Grease Draw Bar Balls/Collect ______________________

_____Check Draw Bar Adjustment ______________________

MOTORS, BALLSCREWS, WAYS:

_____Check and Clean Motor and Tac Brushes

"X" Axis ______________________

"Y" Axis ______________________

"Z" Axis ______________________

_____Check Way Wipers

"X" Axis ______________________

"Y" Axis ______________________

"Z" Axis ______________________

_____Check Ways for Burrs and Score Marks

"X" Axis ______________________

"Y" Axis ______________________

"Z" Axis ______________________

_____Check Ball Screw Covers or Guards

"X" Axis ______________________

"Y" Axis ______________________

"Z" Axis ______________________

_____Check and Adjust Gibs

"X" Axis ______________________

"Y" Axis ______________________

"Z" Axis ______________________

_____Check Backlash and Adjust Parameter

"X" Axis ________ ______________________

"Y" Axis ________ ______________________

"Z" Axis ________ ______________________

_____Check Level of Machine and Adjust ______________________

_____Sweep Head to Table for Square and Adjust ______________________

_____Check spindle height

Right spindle _______________________

Left spindle _______________________

CONTROLS & CABINETS:

_____Clean Spindle Motor Fan ______________________

_____Clean Fans, Filters and Inside Control ______________________

_____Clean Control Air Intake ______________________

_____Check Incoming Power ______________________

_____Check Transformer Taps

Machine ______________________

Control ______________________

_____Back up Parameters ______________________

_____Replace Memory Batteries ______________________

ZERO RETURN AND OVERTRAVEL SWITCHES:

_____Check "X" Axis ______________________

_____Check "Y" Axis ______________________

_____Check "Z" Axis ______________________

_____Check LED and Light Bulbs ______________________

_____Check all LED & Switches (Control Panel) ______________________

_____Clean Tape Reader ______________________

RECOMMENDATIONS FOR REPAIR: ______________________________________________

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Service Engineer __________________________________ Date: _________________


Customer Signature ________________________________ Date: _________________