• 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

K	1.63 in
N	4.34
H-Tap size	5/16 - 18 UNC in
G	0.94
O	2.66 in
A	2.5
I	3.61 in
B	4.5
O*	2.45 in
Center Distance (in)	2.06 in
L	4.82 in
F	1.88
T	0.875
M	1.76
D	2.31
J	3.25 in
U	0.625 in
TAP Depth	0.63 in
C	6 in

Technical Specifications

Ratio	40:1
Mounting Style	Base
Input Diameter (in)	0.625 in
Ratio Range	40:1
Series Style	NH-B-D
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Output Style	D
Input Style	Solid Shaft
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Output RPM	43
Input RPM	1,750
Assembly	B-D
Output Shaft Assembly Code	D
Series Code	NH
Overhung Load	1,315
Output Diameter (in)	0.875 in
Center Distance (in)	2.06
Reducer	Worm - Right Angle
Gear Type	Worm
Input HP	0.916
Output Key	3/16 X 1.50
Reducer Style	Worm - Right Angle
Service Factor	1
Output Shaft Orientation	LR
No. of Gear Reductions	Single
Input HP @ 1750 RPM	0.916
Shaft Seal Material	Viton
Input Keyway	3/16 X 1.38 in
Output HP	0.674
Product Type	Right Angle
Model Code	B821
Thrust Rating - output shaft	1144
Reduction	Single
Output Shaft Direction	Double
Output Torque Rating (in-lb)	971 in/lbs
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	775 lb
Output Shaft	Solid Shaft

General Specifications

UPC	690310061510
Weight	21.00 LB