• 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

BD	6.5
J	4.63 in
T	1.25
B	6.62
K	2.31 in
BF	0.41
O	3.56 in
AK	4.5
U	0.875 in
TAP Depth	0.75 in
LM	8.82
A	3.12
I	4.84 in
F	2.38
L	6.57 in
N	5.77
BE	0.38 in
H-Tap size	3/8 - 16 UNC in
Center Distance (in)	3 in
C	8.25 in
AJ	5.88
G	1.19
D	3.38

Technical Specifications

Overhung Load	2,170
Input Keyway	3/16 X 1.63 in
Output Key	1/4 x 1.75
Series	NH Series - Ironman Narrow Housing Worm Gear Reducers
No. of Gear Reductions	Single
Center Distance (in)	3.00
Input HP @ 1750 RPM	3.233
Motor Frame Size	140
Product Line	NH Series - Ironman Narrow Housing Worm Gear Reducers
Shaft Seal Material	Viton
Output Style	R
Input Bore (C Face)	0.875
Output RPM	87
Input HP	3.947
Frame Size	140TC
Ratio	20:1
Series Code	NH
Output Shaft Orientation	R
Output Diameter (in)	1.250 in
Gear Type	Worm
Output HP	3.407
Model Code	BM830
Input Diameter (in)	0.875 in
Input Keyway (C Face)	3/16 x 3/32
Mounting Style	Base
Thrust Rating - output shaft	2574
Series Style	NH-BM-R
Reducer Style	Worm - Right Angle
Output Shaft Assembly Code	R
Assembly	BM-R
Input RPM	1,750
Ratio Range	20:1
Product Type	Right Angle
Service Factor	1
Input Style	Flexible Coupling Input
Reducer	Worm - Right Angle
Reduction	Single
Output Shaft Direction	Right
Housing Material	Cast Iron
Overhung Load Rating (Output Shaft(lb))	1,950 lb
Output Shaft	Solid Shaft
Output Torque Rating (in-lb)	2015 in/lbs

General Specifications

UPC	690310072424
Weight	59.00 LB