• One-piece cast iron housings with single output cover design, CNC machined for precise component fit and alignment.
• 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.
• 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.
• 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.
• 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.
• Mounting dimensions are interchangeable with most industry standard reducers.

Dimensions

Center Distance (in)	2.06 in
J	4.75 in
B	5.8
F	3
BD	6.5
AD	4.99
V	1.94 in
U	0.625 in
T	1.1875
D	2.28
AE1	0.61
AJ	5.88
AG	6
L	4.82 in
BE	0.38 in
LM	7.07
G	1.44
AK	4.5
I	3.61 in
BF	0.41
C	6.38 in
AE2	0.4

Technical Specifications

Model Code	HM821
Input RPM	1,750
Input Style	Flexible Coupling Input
Output Style	H1
Output HP	1.661
Service Factor	1
Motor Frame Size	56
Output RPM	116
Input HP	1.887
Shaft Seal Material	Viton
Mounting Style	Shaft Mount
Input Bore (C Face)	0.625
Frame Size	56C
Reducer Style	Worm - Right Angle
Center Distance (in)	2.06
Output Shaft Orientation	H1
Series Style	GRG-HM-H1
Product Type	Right Angle
Bore Code	19
Ratio	15:1
Assembly	HM-H1
Reducer	Worm - Right Angle
Series Code	GRG
Output Key	1/4 X 2.50
No. of Gear Reductions	Single
Output Shaft Assembly Code	H1
Input Diameter (in)	0.625 in
Ratio Range	15:1
Thrust Rating - output shaft	1099
Series	GR Series - Ironman Worm Gear Reducers
Gear Type	Worm
Input Keyway (C Face)	3/16 x 3/32
Input Keyway	3/16 X 1.38 in
Input HP @ 1750 RPM	1.887
Output Diameter (in)	1.1875 in
Product Line	GR Series - Ironman Worm Gear Reducers
Reduction	Single
Output Shaft Direction	H1
Overhung Load Rating (Output Shaft(lb))	1,125 lb
Housing Material	Cast Iron
Output Torque Rating (in-lb)	897 in/lbs
Output Shaft	Hollow Bore

General Specifications

UPC	690310037973
Weight	31.00 LB