• 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

H-Tap size	5/16 - 18 UNC in
A	2.56
D	2.06
J	3.75 in
F	1.88
LM	6.7
Center Distance (in)	1.75 in
B	4.5
AJ	5.88
L	4.45 in
TAP Depth	0.63 in
C	5.44 in
K	1.88 in
G	0.94
I	3.24 in
BF	0.41
N	4.75
T	1
U	0.625 in
BD	6.5
AK	4.5
O	2.94 in
BE	0.38 in

Technical Specifications

Series Code	NH
Ratio Range	50:1
Output HP	0.352
Product Type	Right Angle
Overhung Load	1,200
Gear Type	Worm
Input Bore (C Face)	0.625
Reducer	Worm - Right Angle
Input Style	Flexible Coupling Input
Input RPM	1,750
Output Style	R
Thrust Rating - output shaft	1144
Center Distance (in)	1.75
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Motor Frame Size	56
Model Code	BM818
Output Shaft Orientation	R
Ratio	50:1
Shaft Seal Material	Viton
Input Diameter (in)	0.625 in
Output Diameter (in)	1.000 in
Frame Size	56C
Mounting Style	Base
No. of Gear Reductions	Single
Output Key	1/4 X 1.75
Reducer Style	Worm - Right Angle
Input Keyway (C Face)	3/16 x 3/32
Input HP	0.515
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Service Factor	1
Series Style	NH-BM-R
Input Keyway	3/16 X 1.38 in
Output Shaft Assembly Code	R
Assembly	BM-R
Input HP @ 1750 RPM	0.515
Output RPM	35
Reduction	Single
Output Shaft Direction	Right
Output Shaft	Solid Shaft
Output Torque Rating (in-lb)	634 in/lbs
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	1,250 lb

General Specifications

UPC	690310059111
Weight	22.00 LB