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BOSTON Spur Gear: Inch, Pitch 16, 40 Teeth, 1/2 in Bore Dia, 14.5° Pressure Angle - Inch Spur Gears with Standard Hub
BOSTONInch Spur Gears with Standard Hub

BOSTON Spur Gear: Inch, Pitch 16, 40 Teeth, 1/2 in Bore Dia, 14.5° Pressure Angle

The BOSTON Spur Gear: Inch (MPN NB40A) is a Pitch 16, steel inch spur gear with a standard hub, featuring 40 teeth, a 1/2 in bore diameter, a 2.5 in pitch diameter, and a 14.5° pressure angle. It has no keyway and is…

SKU 3G-OTH-724458

Brand
BOSTON
Item
Spur Gear: Inch, Pitch 16, 40 Teeth, 1/2 in Bore Dia, 14.5° Pressure Angle
Category
Inch Spur Gears with Standard Hub
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Technical Specifications

BOSTON
Manufacturer Part Number
NB40A
Type
Pitch 16, Steel
Material
Steel
Teeth
40
Keyway
No
Bore Dia
1/2 in
Pitch Dia
2.5 in
Pressure Angle
14.5°
System of Measurement
Inch
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BOSTON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BOSTON Spur Gear: Inch (MPN NB40A) is a Pitch 16, steel inch spur gear with a standard hub, featuring 40 teeth, a 1/2 in bore diameter, a 2.5 in pitch diameter, and a 14.5° pressure angle. It has no keyway and is designed for inch-system applications.

Frequently Asked Questions

What is the BOSTON NB40A spur gear used for?

The BOSTON NB40A spur gear is used in inch-system power transmission applications to transmit motion between parallel shafts. Its 14.5° pressure angle and steel construction suit moderate-load machinery, conveyors, and industrial drives where precise speed or torque adjustment is needed.

What are the specifications of the BOSTON NB40A spur gear?

The BOSTON NB40A is a Pitch 16, steel inch spur gear with 40 teeth, a 1/2 in bore diameter, a 2.5 in pitch diameter, and a 14.5° pressure angle. It has no keyway and a standard hub. The manufacturer part number is NB40A.

Where to buy the BOSTON NB40A spur gear worldwide?

3G Electric supplies the BOSTON NB40A spur gear worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this inch spur gear.

How to select the right BOSTON spur gear for my application?

To select the right BOSTON spur gear, match the pitch, pressure angle, and bore diameter to your shaft and mating gear. For the NB40A, ensure your system uses inch measurements and a 14.5° pressure angle. Confirm the bore fits your shaft without a keyway if needed.

Used in

Common applications for BOSTON
Compressed air systems — BOSTON Easy Couple nitrile bulk air hoses with vinyl nitrile or neoprene covers
Water transfer and suction — BOSTON vinyl nitrile water suction and discharge hose assemblies with wire helix reinforcement
Petroleum handling — BOSTON corrugated cover gasoline hose assemblies for fuel transfer
Bulk material transport — BOSTON rubber blend material-handling hoses with natural rubber cover for grains and aggregates
Industrial maintenance — BOSTON hoses for general-purpose air and water applications in plant operations

BOSTON Products

3G Electric supplies BOSTON inch spur gears with standard hub. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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