EMT has a separate, machining department with CNC CHUCHERS - VERTICAL AND HORIZONTAL CNC MACHINING CENTERS. Plus, we still keep a few conventional Rise & Fall Mills and NATCO gang, drilling and tapping machines that out-perform CNC equipment for certain operations.

 

Stampings (machined)

C.R. Steel 1⁄4" Thick Formed 21⁄4" x 41⁄2" x 41⁄2" Hole tolerances + .0004 - .0000, DU flatness to .003 and holes bored in line to .002 tolerance and V 16 finish on flat ground area. AISI 1050 Steel .063 Thick x 2½" x ½" Intricate stamping, blanked, formed, four machining operations, heat treated and straightened. 304 Stainless Steel .125" Thick x 4" x 4½" Part stamped and drawn then face turned to .001 flat. Opposite side circular groove .040 wide and bored to ±.001 tolerance.

Bars

Steel shaft 1/2" Diameter x 8" Long Each end is turned to a ±.0005 tolerance and is also eccentric to center of shaft. Also, milling and slotting on ends and center of part. Nickel - Iron 42 Alloy 3/4" Diameter x 15/8" Long Ends bored concentric within .002 TIR of each other. The O.D. turned and threaded to 3/4 - 28 thread. Two steps machined on end. CDA-360 Brass 9/16" Diameter x 39/16" Long The O.D. is turned and knurled. Two step I.D. is bored completely through the part. Close tolerance slot milled with strict orientation to centerline of part. 6061-T6 Aluminum 8" Diameter x 43/8" Long Milled, drilled, and turned from a solid piece of stock. Hole diameters bored to ±.001 tolerance. Stringent angular location requirements.

Extrusions

Aluminum Extrusion 6063-T5 9" x 3" x 2" Milling, drilling, tapping and boring. Two bearing holes held at +.001/-.000 tolerance and in line within .002 tolerance. Aluminum Extrusion 9" x 4" x 4" Milling, drilling, and tapping. Installation of inserts. Tolerances ±.005 critical no burr condition.

Castings

Aluminum Casting 15" x 9" x 5" Turnover base with bronze bushings pressed in and holes bored to +.0005/-.0000 tolerance and in line within .001 tolerance. Aluminum Casting 6" x 4" x 2" Large diameter bored to ±.001 tolerance. "V" surfaces and a center slot in line with large diameter to .002 tolerance. Aluminum Casting 6" x 5" x 2" Machined on Horizontal CNC. Base flatness to .001 tolerance. Bearing hole held to +.0003/-.0000 tolerance and in line to .0005 tolerance.

Aluminum Casting 20" x 11" x 6" Completely machined in horizontal CNC with location tolerances to ±.002 and hole tolerances to +.0004/-.0000. Also tapping, milling and boring. Aluminum Casting 8" x 7" x 1/2" Milling, drilling, tapping and boring "V" surfaces and holes drilled and bored in angle at close tolerances.

Forgings Plates AISI 4340 Alloy Forging Heat treated to RC 38 3" Diameter x 5" Long Drilled and bore to ±.001 tolerance and singlr point threaded after H.T. Aluminum Plate 6061-T651 1.250" x 43/4" x 83/4" Milled from solid plate to close tolerances. Tapped holes from .086-56 UNC-2B. AISI 4340 Alloy Forging Heat treated to RC 38 4" x 2" x 11/2" Form ground "V" contour to 16 finish and .005 tolerance. Milling, drilling and boring to ±.001 tolerances after H.T. A2 Tool Steel 1.53" x 2.500" Machined from a solid bar. Milling, drilling, boring, tapping and grinding. Heat treated to RC 55-60 and nickel plated.