• 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

H-Tap size	5/16 - 18 UNC in
F	1.88
K	1.63 in
D	2.31
U	0.625 in
TAP Depth	0.63 in
J	3.25 in
LM	7.07
AK	4.5
AJ	5.88
T	0.875
G	0.94
L	4.82 in
A	2.5
BF	0.41
BD	6.5
B	4.5
N	4.34
BE	0.38 in
I	3.61 in
Center Distance (in)	2.06 in
C	6 in
O	2.66 in

Technical Specifications

Input HP	0.674
Output RPM	29
Product Type	Right Angle
Input RPM	1,750
Mounting Style	Base
Output Key	3/16 X 1.50
Center Distance (in)	2.06
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Reducer	Worm - Right Angle
Output Style	R
Ratio	60:1
Input Keyway	3/16 X 1.38 in
Shaft Seal Material	Viton
Input Keyway (C Face)	3/16 x 3/32
Input Diameter (in)	0.625 in
No. of Gear Reductions	Single
Output Shaft Orientation	R
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Frame Size	56C
Gear Type	Worm
Input Style	Flexible Coupling Input
Model Code	BM821
Service Factor	1
Input Bore (C Face)	0.625
Output Shaft Assembly Code	R
Ratio Range	60:1
Motor Frame Size	56
Assembly	BM-R
Series Code	NH
Thrust Rating - output shaft	1144
Output Diameter (in)	0.875 in
Series Style	NH-BM-R
Overhung Load	1,415
Reducer Style	Worm - Right Angle
Output HP	0.435
Input HP @ 1750 RPM	0.674
Reduction	Single
Output Shaft Direction	Right
Overhung Load Rating (Output Shaft(lb))	775 lb
Housing Material	Cast Iron
Output Torque Rating (in-lb)	940 in/lbs
Output Shaft	Solid Shaft

General Specifications

UPC	690310061770
Weight	26.00 LB