Motor-Mounted Assemblies for All Blackalloy Series 150 & 250 Drill Units
All Motor-Mounted Drill Unit Assemblies are available with all optional accessories, and for production projects other than drilling (capping, tapping, robotic, etc.)


Electric Motors & Motor Pulleys
Typical Electric Motor Arrangements for Customer Mounted Assemblies
For Use with All Blackalloy™ Series 150 & 250 Drill Units

  • 1/3 HP to 1/2 HP - 1140 to 3450 RPM/TEFC; 115/230V @ 60 Hz single phase motors (3 phase optional)
  • Supplied with 1/2" or 5/8" diameter straight shaft extension with key
  • Supplied un-mounted with rigid foot-mounted base
  • Can be mounted vertically or horizontally
  • Pulleys for 3L and 4L belts (not provided); bore sizes 1/2", 5/8" and 3/4"
  • Air Motors Also Available – 1/2 HP @ 6000 RPM; 3/4 HP @ 3000 RPM

Typical Motor Illustration Two Drill Units -- Minimum Centers 2"



Typical space saving drive with one motor for four drill units

Drill Unit Stroke

 A
1.5 4.063
2 4.563
3 5.563
4 6.563
6 8.563
8 10.563
Dimensions in Inches


1/3-1/2 HP Single Phase Motor 115/230 Volt 60 Cycle TEFC Enclosures

Blackalloy Motor PN

 HP F.L. RPM F.L.

Nema Frame

 A Dia. B Flat B Key C D E Slot F G H J
M33-1140 1/3 1140 56 .625 -- 3/16 2.44 4.88 1.25 8.25 5.25 8.75 3.50
M33-1725 1/3 1725 56 .625 -- 3/16 2.44 4.88 1.25 7.75 4.75 8.12 3.50
M33-3450 1/3 3450 48 .500 .45 -- 2.12 4.25 1.00 7.36 4.40 7.47 3.00
M50-1140 1/2 1140 56 .625 -- 3/16 2.44 4.88 1.25 8.94 5.25 8.75 3.50
M50-1725 1/2 1725 48
56		 .500
.625		 .45
-- 		--
3/16 		2.12
2.44		 4.25
4.88		 1.00
1.25		 8.00
8.88 		4.40
5.25 		7.47
9.00 		3.00
3.50
M50-3450 1/2 3450 48 .500 .45 -- 2.12 4.25 1.00 8.88 5.25 9.00 3.50
Dimensions in Inches

Blackalloy Motor PN
(continued)

 K L M N O Slot P Q R Cond F.L. Amps Insul Class Ship Wt. Lbs.
115V 230V
M33-1140 1.38 1.88 2.75 3.00 .34 11.50 7.89 .50 8.6 4.3 B 31
M33-1725 1.38 1.88 2.75 3.00 .34 10.94 7.76 .50 6.6 3.3 B 20
M33-3450 1.25 1.50 2.50 2.75 .34 10.12 6.19 .50 5.6 2.8 B 17
M50-1140 1.38 1.88 2.75 3.00 .34 12.50 7.89 .50 9.4 4.7 B 39
M50-1725 1.25
1.38		 1.50
1.88		 2.50
2.75		 2.75
3.00		 .34
.34 		10.75
10.75 		6.19
7.62 		.50
.50 		9.2
9.2 		4.6
4.6 		B
B 		20
21
M50-3450 1.25 1.50 2.50 2.75 .34 10.75 7.62 .50 7.4 3.7 A 19
Dimensions in Inches


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Blackalloy Company of America • 21 Summit Avenue • Elmwood Park, NJ 07407

Tel: (201) 475-9300 • Fax: (201) 475-9304
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