Bridgeport Milling Machine SERIES 1 CNC

Adjust micro nuts against quill stop 'O'

Slowly turn adjusting screw 'Q' until lever 'p' trips. If set to light will not be able to drill

At this point secure locknut 'N'

Check for quick action response

Sign off on the Feed Trip Maintenance

Warning: Ensure the machine is powered off before starting the procedure

Three screws 'F' removed and bearing housing 'G' withdrawn

Two screws and bushings 'H' removed

Four screws '|' and one screw 'J' removed

Four screws securing speed changer 'K' removed

Sign off on the drive belt replacement

Adjust Table Saddle Screw Backlash

Move the saddle back (toward the column) 3/4 of the way through the range of travel

Remove four socket head cap screws securing bracket 'Q' to knee

Pull the saddle forward to expose lock nut 'R' and adjusting nut 'S', through the hole in the front of the knee

Use the larger end of the two-piece backlash adjustment tool, to loosen lock nut 'R'

Use the smaller end of the backlash adjustment tool to engage lead screw adjusting nut 'S'

While slowly turning handle 'T', tighten the adjusting nut until backlash is .003 to .005 inches [.08 to .13 millimeters]

Move the saddle back and replace the fourscrews securing bracket 'Q', to the knee

Lubricate with few drops twice daily:

Way Surfaces and Lead Screws lubricated with Sunoco Waylube #1180 or equivalent

Milling Heads (Spindle Bearings) lubricated with S.A.E. 10 or 10W Light Oil (None on grease-packed heads)

Motor - None required. Motor greased for life of bearings

Machine - Lubricated with grease every six months as described on lubrication plate

Power Feed lubricated to sight level with Mobilube No. 46 S.A.E. 140

Shaping Attachment lubricated with Mobil 600W Oil or equivalent

Sign off on the machine lubrication

Adjust Table Feed Screw Backlash

Move the table to the center of travel

Insert the larger end of the two-piece backlash adjustment tool, into the left side of the saddle

Loosen lock nut 'p', one full turn

Use the smaller end of the backlash adjustment tool to engage lead screw adjusting nut 'O'

Tighten the lead screw adjusting nut while slowly turning handle 'N' until the backlash is .003 to .005 inches [08 to .13 millimeters]

Use the larger end of the backlash adjustment tool to secure the lock nut

Sign off on the Table Feed Screw Backlash Maintenance