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

Technical Specifications

Reducer Style	Worm - Right Angle
Input Keyway	3/16 X 1.38 in
Input HP @ 1750 RPM	3.653
Model Code	BM821
Output Shaft Assembly Code	L
Assembly	BM-L
Output HP	3.41
Ratio	5:1
Series Style	GRL-BM-L
Gear Type	Worm
Frame Size	56C
Reducer	Worm - Right Angle
Product Line	GRL Series - Ironman Worm Gear Reducers
Product Type	Right Angle
Thrust Rating - output shaft	735
Shaft Seal Material	Viton
Output Diameter (in)	1.000 in
Input Diameter (in)	0.625 in
Series Code	GRL
Output RPM	350
Input Bore (C Face)	0.625
Output Shaft Orientation	L
Input RPM	1,750
Ratio Range	5:1
Service Factor	1
Motor Frame Size	56
Input HP	3.653
Series	GRL Series - Ironman Worm Gear Reducers
Overhung Load	1,000
Mounting Style	Base
Input Style	Flexible Coupling Input
No. of Gear Reductions	Single
Input Keyway (C Face)	3/16 x 3/32
Center Distance (in)	2.06
Output Key	1/4 x 1.44
Output Style	L
Reduction	Single
Output Shaft Direction	Left
Overhung Load Rating (Output Shaft(lb))	1,000 lb
Housing Material	Cast Iron
Output Torque Rating (in-lb)	614 in/lbs
Output Shaft	Solid Shaft

General Specifications

UPC	690310047118
Weight	30.00 LB