• 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

G	1.44
Center Distance (in)	2.06 in
J	4.75 in
T	1
I	3.61 in
H-Tap size	5/16-18 UNC in
O*	2.08 in
K	2.5 in
C	6.38 in
F	3
N	4.68
U	0.625 in
AK	4.5
O	2.29 in
D	2.28
A	3.81
BE	0.38 in
TAP Depth	0.63 in
LM	7.07
BD	6.5
BF	0.41
AJ	5.88
B	5.8
L	4.82 in

Technical Specifications

Input Diameter (in)	0.625 in
Overhung Load	1,385
Gear Type	Worm
Series	GRG Series - Ironman Worm Gear Reducers
Output Style	D
Frame Size	140TC
Reducer Style	Worm - Right Angle
Mounting Style	Base
Thrust Rating - output shaft	1144
Reducer	Worm - Right Angle
Shaft Seal Material	Viton
Input HP @ 1750 RPM	0.769
Series Code	GRG
Input Keyway (C Face)	3/16 x 3/32
Service Factor	1
Assembly	BM-D
Input HP	0.769
Output Shaft Orientation	LR
No. of Gear Reductions	Single
Motor Frame Size	140
Series Style	GRG-BM-D
Input Keyway	3/16 X 1.38 in
Output RPM	35
Output HP	0.539
Output Shaft Assembly Code	D
Model Code	BM821
Center Distance (in)	2.06
Output Key	1/4 x 1.44
Input Style	Flexible Coupling Input
Product Line	GRG Series - Ironman Worm Gear Reducers
Input Bore (C Face)	0.875
Product Type	Right Angle
Ratio Range	50:1
Ratio	50:1
Output Diameter (in)	1.000 in
Input RPM	1,750
Reduction	Single
Output Shaft Direction	Double
Output Shaft	Solid Shaft
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	1,385 lb
Output Torque Rating (in-lb)	970 in/lbs

General Specifications

UPC	690310036747
Weight	30.00 LB