• Rugged cast iron housings, covers, and flanges provide superior strength and rigidity.
• Factory-filled with premium Mobil Glygoyle 460 polyalkalene glycol lubricant.
• Large oil capacity provides positive splash lubrication and superior cooling capability.
• Viton® double lip seals provide extended life through increased resistance to high temperature, abrasion and chemicals.
• O-rings on all bearing covers, eliminating gaskets, sealants and leaks.
• Oversized high-speed bearings, positively retained for frequent reversing and start/stop cycles. Tapered roller bearings on output shaft for high overhung and thrust load capacities.
• The unique quill seal guard protects the input seal from damage during motor installation.
• Bronze worm gear chill cast from high quality bronze for maximum strength, lubricity and superior life.
• All units are 100% run and leak tested at the factory to insure that you receive the highest quality product.
• Ultimate application flexibility with all-angle mounting provisions, the widest selection of accessory bases and flanges and the largest selection of stock reducer styles.

Dimensions

AK	4.5
L	9.57 in
K	3.75 in
C	11.5 in
N	7.5
Center Distance (in)	4.25 in
D	4.5
A	4.75
BE	0.38 in
F	3.75
TAP Depth	1 in
BF	0.41
J	7.5 in
BD	6.5
U	1.25 in
AJ	5.88
T	1.75
B	9.75
I	6.1 in
G	1.88
H-Tap size	1/2 - 13 UNC in
LM	11.81
O	3.88 in

Technical Specifications

Output Shaft Orientation	R
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Input Keyway (C Face)	3/16 x 3/32
Gear Type	Worm
Output Diameter (in)	1.750 in
Output Key	3/8 x 2.25
Input Bore (C Face)	0.625
Series Style	NH-BM-R
Product Type	Right Angle
Input Style	Flexible Coupling Input
Output Shaft Assembly Code	R
Frame Size	56C
Motor Frame Size	56
Shaft Seal Material	Viton
Service Factor	1
Input HP @ 1750 RPM	4.389
Center Distance (in)	4.25
Series Code	NH
Output RPM	35
Model Code	BM842
Output HP	3.426
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Ratio Range	50:1
Reducer Style	Worm - Right Angle
Reducer	Worm - Right Angle
Overhung Load	3,730
Ratio	50:1
Input Diameter (in)	1.25 in
Input HP	4.389
Input RPM	1,750
Input Keyway	1/4 X 2.50 in
No. of Gear Reductions	Single
Output Style	R
Assembly	BM-R
Thrust Rating - output shaft	2533
Mounting Style	Base
Reduction	Single
Output Shaft Direction	Right
Output Shaft	Solid Shaft
Overhung Load Rating (Output Shaft(lb))	3,730 lb
Output Torque Rating (in-lb)	6170 in/lbs
Housing Material	Cast Iron

General Specifications

UPC	690310079270
Weight	131.00 LB