• Rugged cast iron housings, covers, and flanges provide superior strength and rigidity.
• 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.
• O-rings on all bearing covers, eliminating gaskets, sealants and leaks.
• 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.
• 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.
• 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.

Dimensions

B	11
AK	8.5
T	2
N	9
U	1.25 in
BF	0.53
J	9 in
TAP Depth	1.25 in
I	7.5 in
O	4.72 in
AJ	7.25
L	10.88 in
O*	4.47 in
D	4.88
F	4.5
C	12.69 in
L1	14.86 in
A	6.19
G	2.25
K	4.5 in
BE1	0.5 in
H-Tap size	5/8 - 11 UNC in
BD	9
Center Distance (in)	5.25 in

Technical Specifications

Reducer Style	Worm - Right Angle
Series Code	NH
Motor Frame Size	250
Output Shaft Orientation	LR
Input Keyway	1/4 X 3.00 in
Reducer	Worm - Right Angle
Output Diameter (in)	2.000 in
Center Distance (in)	5.25
Ratio Range	10:1
Gear Type	Worm
Overhung Load	3,370
Service Factor	1
Series Style	NH-BM-D
Output HP	21.73
Frame Size	250TC
Input RPM	1,750
No. of Gear Reductions	Single
Output Shaft Assembly Code	D
Input HP	23.15
Model Code	BM852
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Input Bore (C Face)	1.625
Ratio	10:1
Product Type	Right Angle
Output Key	1/2 x 2.50
Input Style	Flexible Coupling Input
Input Diameter (in)	1.25 in
Assembly	BM-D
Shaft Seal Material	Viton
Mounting Style	Base
Output RPM	175
Input HP @ 1750 RPM	23.15
Thrust Rating - output shaft	2449
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Output Style	D
Reduction	Single
Output Shaft Direction	Double
Overhung Load Rating (Output Shaft(lb))	3,370 lb
Output Torque Rating (in-lb)	7827 in/lbs
Output Shaft	Solid Shaft
Housing Material	Cast Iron

General Specifications

UPC	690310082317
Weight	216.00 LB