• 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

J	7.5 in
O	3.88 in
L	9.57 in
U	1.25 in
F	3.75
L1	13.46 in
H-Tap size	1/2 - 13 UNC in
A	4.75
AJ	7.25
C	11.5 in
I	6.1 in
G	1.88
T	1.75
N	7.5
Center Distance (in)	4.25 in
AK	8.5
D	4.5
TAP Depth	1 in
K	3.75 in
BE1	0.5 in
BF	0.53
B	9.75
BD	9

Technical Specifications

Motor Frame Size	250
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Service Factor	1
Frame Size	250TC
Mounting Style	Base
Shaft Seal Material	Viton
Input RPM	1,750
Output HP	8.458
Thrust Rating - output shaft	2533
Input HP	9.462
Gear Type	Worm
Reducer	Worm - Right Angle
Output RPM	87
Ratio Range	20:1
Center Distance (in)	4.25
Input Bore (C Face)	1.625
Model Code	BM842
Overhung Load	3,320
Assembly	BM-R
Input HP @ 1750 RPM	9.462
Reducer Style	Worm - Right Angle
No. of Gear Reductions	Single
Output Style	R
Input Style	Flexible Coupling Input
Output Key	3/8 x 2.25
Product Type	Right Angle
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Output Shaft Assembly Code	R
Input Keyway	1/4 X 2.50 in
Input Diameter (in)	1.25 in
Ratio	20:1
Series Style	NH-BM-R
Output Diameter (in)	1.750 in
Output Shaft Orientation	R
Series Code	NH
Reduction	Single
Output Shaft Direction	Right
Output Torque Rating (in-lb)	6092 in/lbs
Output Shaft	Solid Shaft
Overhung Load Rating (Output Shaft(lb))	3,320 lb
Housing Material	Cast Iron

General Specifications

UPC	690310079775
Weight	131.00 LB