jet promac 378VBC Bedienungsanleitung Seite 7

3-3. Operation tips and sound pressure: Speed
Selection
Open pulley case and check if spindle speed
min-1or/min (R.P.M.) is correct for your job.
Recommended
Drill
Material Cast Iron
m/m
Ø2 4780 2390 1275 635 3980 1910 7960 3980 4460 2230
Ø3 3185 1590 850
425 2650 1275 5310 2655 2970 1485
Ø4 2390 1195 640
320 1990 955 3980 1990 2230 1115
Ø5 1910 955
510 255 1590 765 3185 1590 1785 890
Ø6 1590 795
425 210 1330 640 2655 1330 1485 745
Ø7 1365 680
365 180 1140 545 2275 1140 1275 635
Ø8 1195 600
320 160
Ø9 1060 530
285 140
Ø10 955
480 255 125
Ø11 870
435 230 115
Ø12 795
400 210 105
Ø13 735
365 195 100
Ø14 680
340 180 90
Ø15 640
320 170 85
Ø16 600
300 160 80
Ø17 560
280 150 75
Ø18 530
265 140 70
Ø19 500
250 135 67
Ø20 480
240 130 65
Ø25 380
190 100 50
Ø30 320
160 85 45
Ø40 240
120 65 30
Processing is adjustable on the cutting materials as well as the
note
material of the cutting to real cutting conditions.
A- weighted sound pressure level measuring under
no load
Drilling-series Operator position
A- weighted sound pressure level measuring under
load
Drilling- series Operator position
378VBC
1. Loosen knob B on both sides of headstock.
2. Push handle A forward as arrow sign to get belt
tension.
3. Lock knob B firmly to fix belt tension.
When speed change is required. Loosen lead bolt (parts
no. 22-S2) on both side of headstock. Pull belt handle
(parts no. 26) to allow belts repositioning and then move
belts to correct groove to acquire desired speed. See
following speed chart for reference.
For proper belt tension, use 10 1bs pressure or hand
pressure on the belt as shown as bellow. The
Alloy
Steel Iron Aluminium
Copper
995 480 1990 995 1115 555
885 425 1770 885 990
800 380 1590 800 890
725 350 1450 725 910
665 320 1330 665 745
610 295 1225 610 685
570 270 1135 570 635
530 255 1060 530 600
500 240 995 500 560
470 225 935 470 525
440 210 885 440 495
420 200 835 420 470
400 190 795 400 445
320 155 640 320 355
265 130 530 265 300
200 95 400 200 225
Lpa= 62 dB(A)
Lpa= 64 dB(A)
recommended distance is about 70mm.
Models belt model tables
Machine model
378VBC
495
3-4. Withdraw drill bit :
445
405
The arbor can be removed to install another drill chuck in
370
the spindle. A drift key is included to help remove the
340
arbor from the spindle. Usually, once the chuck and
320
arbor have been properly mounted together, they are
300
280 considered semi-permanent connections.
260
(If you would like to install a different chuck, we
250
recommend getting a new arbor for that chuck.)
235
225
To remove the drill chuck and arbor:
180
1. Unplug the drill press!
150
2. Rotate the spindle handles until the drift-key slot is
110
exposed in the side of the quill.
3. Loosen the lock knob and rotate the hub (Figure 11)
clockwise until it stops.
4. Tighten the lock knob. The quill should not return up
into the head casting.
5. Rotate the spindle until the inner drift-key slot is
aligned with the outer slot, as shown in (Figure 12).
You will see through the spindle when the slot is
properly aligned.
6. Insert the drift key into the drift-key slot.
7. Tap the drift key with a rubber or wooden mallet, as
shown in (Figure 13), until the chuck releases.
8. Hold a downfeed handle with one hand, and loosen
the lock knob with the other hand.
9. Carefully retract the quill into the headstock.
10. Don't push spindle stroke too long to avoid spindle
stick. (Figure 14)
Hub Lock Knob
Figure 11
Figure 13
7
Belt
Quantity
specifications
6PJ 430
Figure 12 Both Slots
Aligned
Figure 14
1