Imperial Electric Undercutter, Martindale Electric

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Imperial Undercutter
The Imperial Undercutter is an efficient machine where a good, sturdy undercutter is desired for portable and shop use. Its cast-bronze head is heavy enough to keep the saw from "bouncing". Available in electric or air-powered models.

Features:
→Undercuts small, medium, or large commutators.
→Uses either "V" Cutters for "V" slots or Saws for "U" slots
→Undercuts rapidly and without vibration. Ball bearing spindle.
→Cuts full depth to within 7/16"of a riser.
→Has either flexible shaft or air motor drive.
→Simple easy adjustments. Slot guide and depth gauge adjusted by sensitive screws, then locked in position
→Direct drive: Flexible Shaft Model = 2850/3450 r.p.m. Air Motor Model = 2000 r.p.m.

FLEXIBLE SHAFT MODEL

The Air Motor Model is powerful, compact, and lightweight It is operated with one hand on the left handle and the other hand around the air motor on the air control valve. This air model operates on 90 to 120 lbs. air pressure and develops .6 h.p. at 90 lbs. The saw spindle speed ( full load ) is 2,00 r.p.m.
A ten-foot air hose complete with end connections, including a quick-connector at the motor end, is available at extra cost.

Also available and highly recommended is the Automatic Air Filter-Lubricator listed in the catalog items below. It keeps the air motor adequately lubricated at all times.

The Flexible Shaft Model is powered by a 1/3 h.p., 2,850/3,450 r.p.m. motor and a 3/8" diam. 5 ft. long flexible shaft (No. 16), as pictures above. It can also be furnished with a ball-bearing swivel connection for attaching to any motor with 1/2", 5/8". 10mm. or 14mm. armature shaft.
We recommend, however, that it be purchased complete with motor. The motor is mounted on a special base which enables it to be suspended to permit the shaft to take its natural curve. This also takes some weight off the operator's hands.

Description	Catalog Number
Imperial Undercutter with Air Motor	IMPU102
Automatic Air Filter/Lubricator	FILL01
Air Hose, 10 ft. long complete with quick connector	AIRH10
No.1 Steel Carrying Case	CASE101
Net Wt. 4 lbs., Shipping Wt. 6 lbs.

Imperial Undercutter with motor, as pictured above;	Catalog Number
115 V., 50/60 Hz.	IMPU100A
230 V., 50/60 Hz.	IMPU100B
Imperial Undercutter with flexible shaft and Ball Bearing Swivel Connection for use with your motor;	Catalog Number
with 1/2" motor connection	IMPU10112
with 5/8" motor connection	IMPU10158
with 10mm. motor connection	IMPU10110MM
with 14mm. motor connection	IMPU10114MM
No. 16 Core (Replacement for flexible shaft)	MFLXD90
No. 16 Sheath (Replacement for flexible shaft)	MFLXD61
No. 2 Steel Carrying Case; for electric Imperial	CASE102
Net Wt. with motor, 27 lbs.; without motor, 7 lbs.

High Speed Steel Saws and V-Cutters
(See Metal-Working & Mica Saws / Mica Undercutting Saws & V-Cutters, For Saw and Cutter Specifications)

For Small and Medium Commutators	O.D.	I.D.	Catalog Number
No. 3-HS-Saws	7/8"	9/32"	HSMS3
No. 3-VHS Cutters	7/8"	9/32"	HSMSV3
For Large Commutators
No. 4-HS Saws	1"	9/32"	HSMS4
No. 4-VHS Cutters	1"	9/32"	HSMSV4