Grizzly G0757, Owner'S Manual

Page: 38 / 84

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Model G0757 (Mfg. Since 6/13)
6. Arrange V-belts for desired vertical spindle
speed (see Figure 27).
Note: The vertical spindle speed chart shown
below is also on side of ram.
Vertical Spindle Speeds
285 860
1320
1720
2300
D – E D – G
A – F
A – G
B – G
C – E
D – F
B – E
C – F
390
490
585
665
RPM RPM
A
B
C
D
E
F
G
Spindle Motor
Spindle
Motor
Horizontal Spindle Speeds
72 D – E
D – F
D – G
C – E
170
210
240
RPM
B – E 290
C – F 550
B – G 830
A – F 1300
A
E
F
G
B
C
D
Figure 27. Vertical spindle speed chart.
7. Apply pressure on motor handle toward the
back of machine to tension V-belts as you
retighten center pulley hex nut and motor
mount hex bolts.
Note: There is proper V-belt tension when
approximately
1
⁄
4
" –
1
⁄
2
" deflection is achieved
(see Figure 28) by applying moderate pres-
sure midway between pulleys.
Pulley
1
⁄
4
"–
1
⁄
2
"
Deflection
Pulley
Figure 28. Checking V-belt tension.
8. Re-install V-belt covers before connecting
machine to power.
Setting Horizontal Spindle Speed
Tools Needed Qty
Wrench 24mm ................................................... 1
Dead Blow Hammer .......................................... 1
To set vertical spindle speed:
1. DISCONNECT MACHINE FROM POWER!
2. Open horizontal V-belt cover to gain access
to horizontal spindle V-belts and pulleys, as
shown in
Figure 29.
3. Loosen tension thumbwheel and hex nut
behind lower idler pulley bracket.
4. Move lower idler pulley to the right to release
V-belt tension.
Note: You may have to bump the lower idler
pulley with the deadblow hammer to get it to
move.
Figure 29. Horizontal spindle V-belts and pulleys
(cover removed for photo clarity).
Tension
Thumbwheel
Hex Nut
Behind Bracket
Lower
Idler
Pulley