SECTION 7: MAINTENANCE

GeneralLubrication

Your Model G1004/G1008 milling machine requires very little maintenance. A thorough cleaning, now and again, will increase the machine’s durability and efficiency by removing chips and grime that can gum up moving parts.

An occasional application of a protective spray coating will keep the table and other bare metal parts from rusting and pitting.

REMEMBER: When performing maintenance or repairs on shop equipment, always disconnect the machine from its power supply.

Bearings

Most of the bearings are factory-sealed. A sealed bearing requires no lubrication during its lifetime. Should a bearing fail, your mill will probably develop a noticeable rumble, which will increase when the machine is put under load. If allowed to get worse, overheating of the journal containing the bad bearing could occur. If the bad bearing is not replaced, it will eventually seize – possibly doing damage to other parts of the machine. Bearings are standard sizes and can be replaced through Grizzly.

Quill bearings are under a lot of pressure (pre- loading). If not maintained properly, they will wear out prematurely. You will need to partially dismantle the machine once a year to repack the bearings. Please call the service department for instructions about repacking your quill bearings.

Spindle: Add oil to the oil cup after every 4 hours of use. The cup is located on the right portion of the milling head just under the belt guard. SAE 20 oil is recommended.

One Shot Lubricator: Located on the left side of the knee. Check periodically and fill oil reservoir as necessary with SAE 20. This lubricator will supply oil to the knee, apron and table slides. By pulling the lever you will apply enough oil for a 4 hour period of use.

Flood Coolant System: For best results it is recommended that a water soluble oil be used. Replace coolant when it becomes noticeably contaminated or rancid. Take the time to clean the sludge from the bottom of the tank annually. Access to the tank may be made from the right or left panels on the stand/base.

Table and Apron Lead Screws: Lubricate every day with SAE 20 oil. A few drops applied on each side of each nut.

Lead Screw Bearings: Lubricate the bearings located at the ends of the table and just in front of the Y axis hand crank. You will find oil ports with a ball stopper. Lubricate daily. Apply small amount of SAE 20 using an oil can with a pointed nozzle to help push in the ball.

Gibs

The G1004/1008 milling machine table features tapered gibs in the dovetail ways. To tighten the table, loosen the screw at the small end of the tapered gib and tighten the screw at the large end. Use the same procedure for the saddle and knee gib adjustments.

 

 

 

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G1004/1008

Vertical Milling Machine