• 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	11 in
BE1	0.5 in
L1	14.3 in
C	14 in
D	5.12
L	10.88 in
B	13
O*	4.53 in
K	5.5 in
BF	0.53
AK	8.5
F	5.81
G	2.91
U	1.25 in
N	9.06
T	2
Center Distance (in)	5.25 in
BD	9
I	7.5 in
AJ	7.25
O	4.78 in
H-Tap size	5/8-11 UNC in
TAP Depth	1.25 in
A	7.19

Technical Specifications

Input HP	12.19
Input RPM	1,750
Mounting Style	Base
Frame Size	210TC
Output Style	R
Keyway	5/16 X 5/32
Output Key	1/2 X 3.50
Reducer Style	Worm - Right Angle
Output RPM	70
Output Shaft Assembly Code	R
Series Type	Cast Iron 800 Worm Gear Reducers
Output Shaft Orientation	R
Input Style	Flexible Coupling Input
No. of Gear Reductions	Single
Series Style	GR-BM-R
Series Code	GR
Output HP	10.57
Overhung Load	3,560
Input Diameter (in)	1.25 in
Model Code	BM852
Gear Type	Worm
Reducer	Worm - Right Angle
Input Keyway	1/4 X 3.00 in
Service Factor	1
Thrust Rating - output shaft	3412
Input Bore (C Face)	1.375
Ratio Range	25:1
Assembly	BM-R
Input Keyway (C Face)	5/16 x 5/32
Product Line	GR Series - Ironman Worm Gear Reducers
Ratio	25:1
Output Diameter (in)	2 in
Motor Frame Size	210
Shaft Seal Material	Viton
Series	GR Series - Ironman Worm Gear Reducers
Center Distance (in)	5.25
Product Type	Right Angle
Input HP @ 1750 RPM	12.19
Reduction	Single
Output Shaft Direction	Right
Output Shaft	Solid Shaft
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	3,560 lb
Output Torque Rating (in-lb)	9517 in/lbs

General Specifications

UPC	690310031797
Weight	254.00 LB
Packaged Length	40.00 IN
Packaged Width	37.00 IN
Packaged Height	20.00 IN