Product features The rovolving speed is changeable during the machine is being operated. The gears are safe absolutely. The total maximum height is 570m/m. Design of motor and gear box makes the point gravity center become only 280m/m. As the center of gravity is quite low and hard to be fallen, the magentic foundation can attain its function and efficiency. The distributor disc is located on the top of machine which prevent it from being fallen or destroyed. Mtm-930a & mtm-922a with six-step speed variable (max. Revolving speed: 756min revoling speed:51) depends on the hardness of processed objects and size of hole which makes the operator more comfortable to select the revolving speed. Specifications Model mtm-922a mtm-930a mtm-940a Drill capacity 1/4"~7/8" 6° ~22° 1/4"~1-1/4" 6° ~32° 5/8"~1-1/2" 16° ~38° Tapping capacity 3/8"~7/8" 10 ° ~22° 3/8"~1-1/8" 10 ° ~30° 5/8"~1-1/2" 16 ° ~38° Power 220v 3-phase 220v 3-phase 220v 3-phase Hp 1-1/2 2 2-1/2 R.P.M. 756 456 303 186 127 51 756 456 303 186 127 51 686 404 268 165 165 97 65 38 Max depth 100 100 130 Body stroke 150 150 200 Transvers al move 20 20 20 Turning degree 330¦ 330¦ 330¦ Electro magretic 126x240 135x280 155x280 Electro magretic force 2000kgs 2500kgs 3000kgs Height 570 580 730 Torsion fixture standard fitting 5 7 8 Drill sleeve standard fitting 2 3 3 Fittings weight 5 7 16 Machine weight 60 70 100 * these specifications and shape may be changed for improvement without prior notice.