• 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

C	5.44 in
H-Tap size	5/16 - 18 UNC in
G	0.94
T	1
I	3.24 in
D	2.06
TAP Depth	0.63 in
N	4.75
O	2.94 in
L	4.45 in
M	1.76
F	1.88
Center Distance (in)	1.75 in
K	1.88 in
A	2.56
J	3.75 in
U	0.625 in
B	4.5

Technical Specifications

Output Shaft Assembly Code	R
Output RPM	29
Series Style	NH-B-R
Mounting Style	Base
Reducer	Worm - Right Angle
Service Factor	1
Output Key	1/4 x 1.75
Input Keyway	3/16 X 1.38 in
Input Diameter (in)	0.625 in
Assembly	B-R
Output Diameter (in)	1.000 in
Model Code	B818
Output HP	0.288
Input RPM	1,750
Reducer Style	Worm - Right Angle
Input HP	0.449
No. of Gear Reductions	Single
Thrust Rating - output shaft	1144
Output Shaft Orientation	R
Series Code	NH
Overhung Load	1,200
Input Style	Solid Shaft
Center Distance (in)	1.75
Gear Type	Worm
Ratio Range	60:1
Product Type	Right Angle
Input HP @ 1750 RPM	0.449
Output Style	R
Shaft Seal Material	Viton
Ratio	60:1
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Reduction	Single
Output Shaft Direction	Right
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	1,250 lb
Output Torque Rating (in-lb)	623 in/lbs
Output Shaft	Solid Shaft

General Specifications

UPC	690310058763
Weight	17.00 LB