Bridgeport Milling Machine series 1

- Lubricate with few drops twice daily:

1. Way Surfaces and Lead Screws using Sunoco Waylube #1180 or equivalent

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

3. Motor - None required. Motor greased for life of bearings

4. Machine - Lubricate with grease every six months as described on lubrication plate

5. Power Feed using Oil to sight level with Mobilube No. 46 S.A.E. 140

6. Shaping Attachment using Mobil 600W Oil or equivalent;

The table is equipped with a tapered gib and adjusting screws at the left and right sides of the table

2. Clean the slides and apply lubricant

B) Tighten left gib screw "A", Figure 3.10, slightly and test the table movement

C) Repeat step B until a slight drag is felt when moving the table by hand

The knee is equipped with a tapered gib and adjusting screws at the top and bottom of the knee

1. Loosen the two knee clamps located on the left side of the knee

2. Clean the slides and apply lubricant

3. Remove wiper "K", to gain access to upper gib adjustment screw "L"

B) Tighten the upper gib screw slightly and test the knee movement

1. Run head to adjust to lowest speed

3. Remove three screws "A" and cover "B"

4. Using the two screws "A", compress spring "C"

5. Rotate the speed changer to the highest speed

6. Remove the reversing switch from the belt housing

7. Remove the two securing screws "D"

8. Lift the motor and rest the case on stud "E"

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