• 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

U	0.625 in
G	1.44
TAP Depth	0.63 in
T	1
B	5.8
I	3.61 in
J	4.75 in
O	2.29 in
F	3
N	4.68
M	1.76
C	6.38 in
Center Distance (in)	2.06 in
H-Tap size	5/16-18 UNC in
L	4.82 in
K	2.5 in
A	3.81
D	2.28

Technical Specifications

Model Code	B821
Series Style	GRG-B-R
Output Key	1/4 x 1.44
Product Type	Right Angle
Input Diameter (in)	0.625 in
Gear Type	Worm
Input HP	0.304
Output RPM	21
Output Shaft Assembly Code	R
Shaft Seal Material	Viton
Input RPM	1,750
Series	GRG Series - Ironman Worm Gear Reducers
Output HP	0.19
No. of Gear Reductions	Single
Ratio	80:1
Input HP @ 1750 RPM	0.304
Mounting Style	Base
Service Factor	1
Series Code	GRG
Input Keyway	3/16 X 1.38 in
Thrust Rating - output shaft	1144
Ratio Range	80:1
Output Style	R
Product Line	GRG Series - Ironman Worm Gear Reducers
Assembly	B-R
Output Diameter (in)	1.000 in
Center Distance (in)	2.06
Reducer Style	Worm - Right Angle
Input Style	Solid Shaft
Output Shaft Orientation	R
Overhung Load	1,495
Reducer	Worm - Right Angle
Reduction	Single
Output Shaft Direction	Right
Output Torque Rating (in-lb)	547 in/lbs
Overhung Load Rating (Output Shaft(lb))	1,495 lb
Housing Material	Cast Iron
Output Shaft	Solid Shaft

General Specifications

UPC	690310036037
Weight	25.00 LB