• 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

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

Technical Specifications

Output Shaft Orientation	LR
Shaft Seal Material	Viton
Series	GRG Series - Ironman Worm Gear Reducers
Product Type	Right Angle
Input Bore (C Face)	0.625
Input HP	2.793
Output Style	D
Ratio Range	7.5:1
Output Key	1/4 x 1.44
Center Distance (in)	2.06
Output HP	2.562
Thrust Rating - output shaft	811
Series Code	GRG
Frame Size	56C
Input HP @ 1750 RPM	2.793
Output Diameter (in)	1.000 in
Ratio	7.5:1
Input Diameter (in)	0.625 in
Motor Frame Size	56
Product Line	GRG Series - Ironman Worm Gear Reducers
Overhung Load	1,035
Input Style	Flexible Coupling Input
Mounting Style	Base
Service Factor	1
Input RPM	1,750
No. of Gear Reductions	Single
Output Shaft Assembly Code	D
Assembly	BM-D
Gear Type	Worm
Input Keyway (C Face)	3/16 x 3/32
Model Code	BM821
Input Keyway	3/16 X 1.38 in
Series Style	GRG-BM-D
Output RPM	233
Reducer Style	Worm - Right Angle
Reducer	Worm - Right Angle
Reduction	Single
Output Shaft Direction	Double
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	1,035 lb
Output Torque Rating (in-lb)	692 in/lbs
Output Shaft	Solid Shaft

General Specifications

UPC	690310036426
Weight	30.00 LB