Features   This mill is designed and built as a high quality, high production, high precision machine tool. Machine sliding surfaces are hand scraped and accurately aligned to meet today's high standards for close tolerance machining. Dual heads provide two simultaneous machining operations, achieving more dependable accuracy as well as doubling production. Columns and heads are mounted on wide dovetail slides, permitting each spindle to be positioned independent of the other along an X, Y or Z axis. The spindle is hardened and precision ground with a No. 30 milling machine taper. Mill clearances will accommodate most indexing heads, vices and other holding fixtures.   Standard Equipment Hand lever feed on vertical movement of heads only Cabinet Base Columns and tables are positioned manually 2 HP, 1725 RPM, 3 phase, heavy-duty, ball-bearing, totally enclosed fan-cooled dual voltage motors with forward/reverse drum switches Belt guards and machine light   Optional Equipment Micrometer feed screw to all motions 3" riser blocks to raise the head for tall fixtures (max. of two recommended) Air hydraulic feed to all motions High speed spindles Coolant systems One shot or automatic lubrication of ways Variety of special motors with range of HP and RPM Complete wiring for standard and special applications Other optional features custom engineered to specific job requirements.

Barker Model AMD illustrated includes the following optional equipment: Micrometer feed screws to columns and heads Air hydraulic table feed One shot lubrication to table ways Complete wiring

 

AMD General Specifications

Table:	Standard working surface 6-1/4" x 20" with 10" maximum longitudinal travel Optional working surface 6-1/4" x 25" with 15" longitudinal travel
Spindles:	Standard No. 30 milling machine taper Separation 3" minimum - 10" maximum
Heads:	Vertical travel 6" maximum (can add riser blocks for additional clearance)
Columns:	Transverse travel 4" maximum Longitudinal travel 3" maximum
Motors (2):	220/440/60/3 -- T.E.F.C. -- 2 HP Standard speed 1725 RPM Optional 1140 and 3450 RPM
Color:	Machine Tool Gray
Net Weight:	1000 lbs.
Approximate Shipping Wt:	1250 lbs.

 

Spindle Speeds

Standard Drive
Motor RPM
1140	1725	3450

350	530	1060
475	715	1430
625	940	1880
800	1200	2400
1020	1530	3060

Low Speed Drive
With Idler Pulley			Direct Drive
Motor RPM			Motor RPM
1140	1725	3450	1140	1725	3450

77	117	234		296	449	898
115	174	378		442	670	1340
161	244	488		618	937	1874

Speeds up to 11,000 RPM available. Consult factory. Air Hydraulic Feed Specifications: Feed - Infinitely Variable..........0 to 50 IPM Rapid Traverse...........................300 IPM Air Pressure Required..............75 to 120 PSI Air Cylinder Bore Size...............2-1/2" Dia. Max.