• 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

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

Technical Specifications

Output Diameter (in)	1.000 in
Output Key	1/4 x 1.75
Model Code	BM818
Series Code	NH
Service Factor	1
Output RPM	233
Output Style	L
Series Style	NH-BM-L
No. of Gear Reductions	Single
Output Shaft Orientation	L
Reducer Style	Worm - Right Angle
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Input Diameter (in)	0.625 in
Assembly	BM-L
Input Style	Flexible Coupling Input
Shaft Seal Material	Viton
Product Type	Right Angle
Motor Frame Size	140
Center Distance (in)	1.75
Input Keyway (C Face)	3/16 x 3/32
Frame Size	140TC
Input HP @ 1750 RPM	1.909
Output HP	1.745
Input RPM	1,750
Ratio Range	7.5:1
Overhung Load	1,200
Thrust Rating - output shaft	868
Input Keyway	3/16 X 1.38 in
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Input Bore (C Face)	0.875
Input HP	1.909
Ratio	7.5:1
Output Shaft Assembly Code	L
Reducer	Worm - Right Angle
Mounting Style	Base
Gear Type	Worm
Reduction	Single
Output Shaft Direction	Left
Output Torque Rating (in-lb)	471 in/lbs
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	1,250 lb
Output Shaft	Solid Shaft

General Specifications

UPC	690310059265
Weight	22.00 LB