Grizzly Vertical Milling Machines G0728 - Manual (Page 7)

Model G0728–31 (Mfg. Since 11/11)
-5-
Model Number G0728 G0729 G0730 G0731
Table Info
Table Length 26" 30"
Table Width 6 1 ⁄
8
" 8"
Table Thickness 1 3 ⁄
4
" 2"
Number of T-Slots 3
T-Slots Width 9 ⁄
16
" 1 ⁄
2
"
T-Slots Height 13 ⁄
16
" 7 ⁄
8
"
T-Slots Centers 1 11 ⁄
16
" 2 3 ⁄
16
"
Stud Size 3 ⁄
8
"
Operation Info (cont'd)
Swing 13" 14"
Longitudinal Table Travel 15 5 ⁄
8
" 18"
Cross Table Travel 6" 7 3 ⁄
4
"
Knee Travel 13 1 ⁄
2
" 17 3 ⁄
4
"
Head Swivel (Left-to-right) 45° left/right
Turret/Column Swivel (Left and Right) 360°
Max. distance Spindle to Column 6 1 ⁄
2
" 7"
Max. distance Spindle to Table 12 1 ⁄
4
" 20"
drilling Capacity for Cast Iron 1"
drilling Capacity for Steel 3 ⁄
4
"
Number of Vertical Spindle Speeds 9
Range of Vertical Spindle Speeds
(RpM) 230, 320, 570, 670, 1200, 1420, 1650,
2170, 2520
270, 420, 490, 950, 1110, 1410, 1720,
2050, 3200
Quill diameter 2.950"
Model Number G0728 G0729 G0730 G0731
Construction
Spindle Housing/Quill Chrome-plated Cast iron Chrome-plated steel
Table precision-ground Cast iron
Head/Column/base Cast iron
Stand stamped steel Cast iron
paint Epoxy
Other Specifications
Warranty 1 year
Country of Origin taiwan
Leadscrew Info
Leadscrew diameter 7 ⁄
8
"
Leadscrew TpI 8 tpi
Leadscrew Length 35" 41"
Spindle Info
Spindle Taper r8
End Milling Capacity 3 ⁄
4
" 1"
face Milling Capacity 3"
drawbar diameter 7 ⁄
16
"
drawbar TpI 20 tpi
drawbar Length 12" 12 3 ⁄
8
"
Spindle bearings angular Contact Bearing