• 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

BD	6.5
A	2.5
H-Tap size	5/16 - 18 UNC in
J	3.25 in
G	0.94
AK	4.5
TAP Depth	0.63 in
BF	0.41
O*	2.45 in
BE	0.38 in
B	4.5
D	2.31
U	0.625 in
Center Distance (in)	2.06 in
L	4.82 in
I	3.61 in
K	1.63 in
AJ	5.88
T	0.875
O	2.66 in
LM	7.07
F	1.88
N	4.34
C	6 in

Technical Specifications

Output Style	D
Frame Size	140TC
Motor Frame Size	140
Reducer Style	Worm - Right Angle
Center Distance (in)	2.06
Input Bore (C Face)	0.875
Output Shaft Assembly Code	D
Service Factor	1
Reducer	Worm - Right Angle
Model Code	BM821
Ratio Range	10:1
Input Keyway	3/16 X 1.38 in
Input HP	2.464
Ratio	10:1
Overhung Load	1,065
Input HP @ 1750 RPM	2.464
Input Keyway (C Face)	3/16 x 3/32
Input RPM	1,750
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Output RPM	175
Mounting Style	Base
Thrust Rating - output shaft	898
Output HP	2.235
Product Type	Right Angle
Input Diameter (in)	0.625 in
Series Style	NH-BM-D
Output Diameter (in)	0.875 in
Output Key	3/16 X 1.50
Shaft Seal Material	Viton
Gear Type	Worm
Input Style	Flexible Coupling Input
Assembly	BM-D
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
No. of Gear Reductions	Single
Output Shaft Orientation	LR
Series Code	NH
Reduction	Single
Output Shaft Direction	Double
Output Shaft	Solid Shaft
Output Torque Rating (in-lb)	805 in/lbs
Overhung Load Rating (Output Shaft(lb))	775 lb
Housing Material	Cast Iron

General Specifications

UPC	690310062081
Weight	26.00 LB