• 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

K	2.5 in
J	5 in
D	2.28
AJ	5.88
O	2.29 in
I	3.61 in
U	0.625 in
L	4.82 in
G	1.44
LM	7.07
BD	6.5
BF	0.41
O*	2.08 in
T	1
F	2.88
AK	4.5
B	5.8
C	6.38 in
RQ	4.06 in
N	4.68
LQ	4.46 in
M	1.76
BE	0.38 in
Center Distance (in)	2.06 in
H-Tap size	5/16-18 UNC in
A	3.81
TAP Depth	0.63 in

Technical Specifications

Output Key	1/4 X 1.44
Output HP	0.435
Input HP	0.674
Overhung Load	1,415
Keyway	3/16 X 3/32
Input Style	Flexible Coupling Input
Series Style	GRL-BM-L
Output Style	L
Series Type	Cast Iron 800 Worm Gear Reducers
Output Shaft Assembly Code	L
Frame Size	56C
Input RPM	1,750
Output Shaft Orientation	L
No. of Gear Reductions	Single
Series Code	GRL
Reducer Style	Worm - Right Angle
Output RPM	29
Mounting Style	No Base
Motor Frame Size	56
Product Line	GRL Series - Ironman Worm Gear Reducers
Service Factor	1
Thrust Rating - output shaft	1144
Product Type	Right Angle
Center Distance (in)	2.06
Reducer	Worm - Right Angle
Ratio	60:1
Input Quill Diameter (in)	0.625 in
Gear Type	Worm
Shaft Seal Material	Viton
Input Bore (C Face)	0.625
Model Code	BM821
Input Diameter (in)	0.625 in
Input Keyway	3/16 X 1.38 in
Motor HP Rating	0.5
Ratio Range	60:1
Output Diameter (in)	1.000 in
Series	GRL Series - Ironman Worm Gear Reducers
Input HP @ 1750 RPM	0.674
Assembly	BM-L
Input Keyway (C Face)	3/16 x 3/32
Reduction	Single
Output Shaft Direction	Left
Output Torque Rating (in-lb)	940 in/lbs
Housing Material	Cast Iron
Output Shaft	Solid Shaft
Overhung Load Rating (Output Shaft(lb))	1,415 lb

General Specifications

UPC	690310095584
Weight	30.00 LB
Packaged Length	10.69 IN
Packaged Width	9.06 IN
Packaged Height	10.50 IN