• 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

BE	0.38 in
N	4.68
BD	6.5
D	2.28
LM	7.07
G	1.44
O	2.29 in
AK	4.5
T	1
A	3.81
BF	0.41
TAP Depth	0.63 in
K	2.5 in
I	3.61 in
U	0.625 in
F	3
C	6.38 in
H-Tap size	5/16-18 UNC in
AJ	5.88
J	4.75 in
B	5.8
Center Distance (in)	2.06 in
L	4.82 in

Technical Specifications

Service Factor	1
Series	GRG Series - Ironman Worm Gear Reducers
Input Keyway	3/16 X 1.38 in
Ratio	25:1
Input Bore (C Face)	0.875
Series Style	GRG-BM-R
Gear Type	Worm
Model Code	BM821
Product Line	GRG Series - Ironman Worm Gear Reducers
Product Type	Right Angle
Input Diameter (in)	0.625 in
Reducer	Worm - Right Angle
Overhung Load	1,210
Output Diameter (in)	1.000 in
Input HP	1.333
Output Key	1/4 x 1.44
Output Shaft Assembly Code	R
Assembly	BM-R
Input HP @ 1750 RPM	1.333
Output Style	R
Ratio Range	25:1
Reducer Style	Worm - Right Angle
Input Style	Flexible Coupling Input
Frame Size	140TC
Center Distance (in)	2.06
Input RPM	1,750
Input Keyway (C Face)	3/16 x 3/32
No. of Gear Reductions	Single
Mounting Style	Base
Shaft Seal Material	Viton
Thrust Rating - output shaft	1144
Output Shaft Orientation	R
Series Code	GRG
Motor Frame Size	140
Output RPM	70
Output HP	1.094
Reduction	Single
Output Shaft Direction	Right
Overhung Load Rating (Output Shaft(lb))	1,210 lb
Output Torque Rating (in-lb)	985 in/lbs
Housing Material	Cast Iron
Output Shaft	Solid Shaft

General Specifications

UPC	690310036662
Weight	30.00 LB