Product Comparison

Part Number	3990	4190
Product	HiTorque 3990 Mini Mill	HiTorque 4190 Deluxe Mini Mill
End Milling Capacity	0.6" (16 mm)	0.6" (16 mm)
Face Milling Capacity	1.2" (30 mm)	1.2" (30 mm)
Drilling Capacity	0.5" (13 mm)	0.5" (13 mm)
Table Size	18.1" x 4.7" (460 mm x 120 mm)	18.1" x 4.7" (460 mm x 120 mm)
T-Slots	3 slots 0.47" (12.0 mm) wide	3 slots 0.47" (12.0 mm) wide
X-Axis Travel	11.8" (300 mm)	11.8" (300 mm)
Y-Axis Travel	5.1" (130 mm)	5.1" (130 mm)
Z-Axis Travel	10.6" (270 mm)	10.6" (270 mm)
Throat	6.5" (165 mm)	6.5" (165 mm)
X- and Y-Axis Feed Screws	0.062" (1.59 mm) per rotation	0.062" (1.59 mm) per rotation
Maximum Spindle to Table	11.5" (292 mm)	11.5" (292 mm)
Positioning Accuracy	0.0004" (0.010 mm)	0.0004" (0.010 mm)
Spindle Taper	R8	R8
Spindle Motor	0.67 hp (500 Watts)	0.67 hp (500 Watts)
Spindle Speed	100 - 2500 RPM	100 - 2500 RPM
Power Requirements	120 V 60 Hz 8 Amps	120 V 60 Hz 8 Amps
Machine Weight	124 lbs (56 kg)	124 lbs (56 kg)
Base Dimensions (W x D)	8.5" x 14.2" (216 mm x 362 mm)	8.5" x 14.2" (216 mm x 362 mm)
Mounting Holes Center to Center (W x D)	7.09" x 11.81" (180.0 mm x 300.0 mm)	7.09" x 11.81" (180.0 mm x 300.0 mm)
Overall Dimensions (W x D x H)	23.2" x 19.7" x 36.3" (590 mm x 500 mm x 922 mm)	23.2" x 19.7" x 36.3" (590 mm x 500 mm x 922 mm)
Crated Weight	161 lbs (73 kg)	177 lbs (80 kg)
Crate Dimensions (W x D x H)	23.6" x 25.0" x 29.9" (600 mm x 635 mm x 760 mm)	23.6" x 25.0" x 29.9" (600 mm x 635 mm x 760 mm)