Capacity:
Sharpens 1/8" to 2-1/2" diameter drills. 1/8" to 3" calibration available.

Versatility:
Sharpens 2, 3, or 4 flute drills with variable included angles of 90º, 100º, 110º, 118º, 130º, and 140º.

Precision:
For accurately centered and free cutting drills in seconds.

Simplicity:
NO chucks, NO collets, and NO wrenches to bother with when sharpening different diameter drills. The same drill holding unit handles all drills from 1/8" to 2-1/2" in diameter.

Unmatched Capacity:
The STERLING Drill Grinder is the only grinder capable of sharpening drills from 1/8" to 2-1/2" in diameter. It will accommodate any standard catalog drill within this size range without the hassle of using chucks, collets or wrenches.

Extra Versatility:
The STERLING Drill Grinder will sharpen 2, 3, and 4-flute drills with 90º to 140º included angles.

Standard Equipment:

• Flexible work light permanently mounted
• Diamond wheel dresser with mounted diamond
• 45º, 50º, 55º, 59º, 65º, and 70º drill stops
• 6" straight cup wheel, 70 grit, aluminum oxide (46 and 60 grit also available)
• Micrometer Head for accurate control of drill infeed
• 3/4 H.P., 3450 RPM, 115-volt, single phase, 60 cycle, NEMA C flange mount, totally enclosed fan-cooled, ball bearing motor.

Optional Equipment:

• Mist Coolant System improves grinding accuracy and finish
• Silicon Carbide (60 and 120 grit) Grinding Wheels
• 3" drill diameter calibration
• 220/440-volt 3-phase motor and tropicalized motors (1-phase standard).

Instructions for Re-Calibration of Clearance Dial:

• Take a properly-ground 1" drill. Adjust the scale to 1" and, without the spindle motor running, move the drill holder until the drill point contacts the wheel face.
• Adjust the dial hand wheel until the drill can be swung through the entire grinding arc while maintaining contact with the wheel face.
• When this has been accomplished, loosen the jam nut on the circular rack (#DB12D) and turn the circular rack using a screw driver in the slot provided until the dial pointer is in the proper position at the 1" mark. Tighten the jam nut.