Weekly Lubrication; Daily Lubrication; Slide Adjustments; Shear Pin Replacement - Promac GH-1440W Operating Instructions Manual

Fig 25
Fill oil by removing plug (B).
Drain oil after first moth of
operation by removing drain plug
on the bottom. Refill with oil.
Then change the oil in the
apron annually (respectively
every 700 operating hours).

8.2 Weekly Lubrication

Weekly inspect the oil sight glasses,
fill oil on demand (see 8.1).
Weekly apply grease:
DIN 51807-1 non slinging grease
(e.g. BP L2, Mobilgrease Special).
- Rack
Apply grease on entire length.
- Change gears
Coat all gears with grease

8.3 Daily Lubrication

Daily apply oil:
DIN 51502 CG ISO VG 68
(e.g. BPMaccurat 68, Castrol Magna
BD 68, Mobil Vectra 2)
Fig 26
- Carriage
Lubricate 4 ball oilers (D, Fig 26)
- Top slide
Lubricate 1 ball oiler (B, Fig 26)
- Cross slide
Lubricate 4 ball oilers (A, Fig 26)
- Lead screw and feed rod
Apply oil on entire length.
- Tailstock
Lubricate 2 ball oilers (B, Fig 27)
- Lead screw/ feed rod hub
Lubricate ball oiler (A, Fig 27)
Fig 27

8.4 Slide adjustments

Each slide is fitted with tapered gib.
Loosen the rear gib screw (A, Fig
28 for top slide shown) by one turn.
Fig 28
Tighten front gib screw (B, Fig 28
for cross slide shown) appr. a
quarter turn.
Try and repeat until slide moves
freely without play.
Gently tighten the rear gib screw.

8.5 Shear pin replacement

Lead screw and feed shaft are
equipped with shearing pins to
protect the drive against overload.
If a shear pin breaks it must
be replaced.
Knock out the broken pin.
11
Line up the holes and fit a new pin.

8.6 Headstock alignment

The headstock has been aligned
at the factory.
Check that the machine bed is level
and correct before proceeding.
Turn a test piece for inspection.
The diameter should be the same
on the whole turning length.
If headstock alignment is needed:
Loosen the 4 headstock bolts (A, Fig
29) that hold the headstock to the
bed. Do not loosen completely; some
drag should remain.
Fig 29
Adjust on the lateral adjustment bolts
located on the rear of the headstock.
Tighten all headstock bolts.

8.7 Coolant system

Remove rear access cover on
tailstock end of machine stand
(Fig 30).
Fig 30
Pour 15 litres of coolant mix into
dip pan.
Follow coolant manufacturer's
recommendations for use, care
and disposal.