• 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

Center Distance (in)	2.06 in
I	3.61 in
BF	0.41
V	1.94 in
U	0.625 in
AK	4.5
AA	8
P	1.38 in
AE2	0.85
C	6 in
AF	0.19
D	2.31
L	4.82 in
AG	4.65
AJ	5.88
G	1.82
AD	3.57
LM	7.07
AB	3.69
BD	6.5
B	4.5
BE	0.38 in
LL	2.12 in
T	1
H	0.53 in
AE1	0.3

Technical Specifications

Input Style	Flexible Coupling Input
Output Shaft Orientation	H1
Output HP	2.235
Assembly	HM-H1
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Output Key	1/4 X 2.50
Output RPM	175
Reducer Style	Worm - Right Angle
Reducer	Worm - Right Angle
Ratio	10:1
Input HP	2.464
Frame Size	56C
Keyway	3/16 X 3/32
Input RPM	1,750
Gear Type	Worm
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Shaft Seal Material	Viton
No. of Gear Reductions	Single
Ratio Range	10:1
Output Diameter (in)	1 in
Thrust Rating - output shaft	898
Input Bore (C Face)	0.625
Input Keyway	3/16 X1.38 in
Model Code	HM821
Input Diameter (in)	0.625 in
Product Type	Right Angle
Service Factor	1
Series Code	NH
Mounting Style	Shaft Mount
Input HP @ 1750 RPM	2.464
Output Shaft Assembly Code	H1
Input Keyway (C Face)	3/16 x 3/32
Center Distance (in)	2.06
Output Style	H1
Motor Frame Size	56C
Bore Code	16
Series Style	NH-HM-H1
Reduction	Single
Output Shaft Direction	H1
Output Torque Rating (in-lb)	805 in/lbs
Output Shaft	Hollow Bore
Overhung Load Rating (Output Shaft(lb))	775 lb
Housing Material	Cast Iron

General Specifications

UPC	690310063194
Weight	26.00 LB