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3G Electric
BOSTON NF40 Inch Spur Gear - Inch Spur Gears with Standard Hub
BOSTONInch Spur Gears with Standard Hub

BOSTON NF40 Inch Spur Gear

The BOSTON Spur Gear: Inch (SKU NF40, MPN NF40) is a Pitch 10, cast iron inch spur gear with a standard hub, featuring 40 teeth, a 7/8 in bore diameter, and a 14.5° pressure angle. This gear has no keyway and is…

SKU 3G-OTH-724415

Also listed as: NF 40 · NF-40

Brand
BOSTON
Item
NF40 Inch Spur Gear
Part Number
NF40
Category
Inch Spur Gears with Standard Hub
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

BOSTON
Manufacturer Part Number
NF40
Type
Pitch 10, Cast Iron
Material
Cast Iron
Teeth
40
Keyway
No
Bore Dia
7/8 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 (SKU NF40, MPN NF40) is a Pitch 10, cast iron inch spur gear with a standard hub, featuring 40 teeth, a 7/8 in bore diameter, and a 14.5° pressure angle. This gear has no keyway and is designed for inch-system applications.

Frequently Asked Questions

What is the BOSTON Spur Gear NF40 used for?

The BOSTON Spur Gear NF40 is used in inch-system power transmission applications where precise speed and torque control are needed. Its 40 teeth and 14.5° pressure angle suit light-to-medium duty drives in conveyors, packaging machinery, and industrial equipment. 3G Electric supplies this gear across 14 industrial departments.

What are the specifications of the BOSTON Spur Gear NF40?

The BOSTON Spur Gear NF40 is an inch-system spur gear with Pitch 10, 40 teeth, a 7/8 in bore diameter, and a 14.5° pressure angle. It is made of cast iron, has no keyway, and features a standard hub. The manufacturer part number is NF40. 3G Electric sources this genuine BOSTON gear for worldwide delivery.

Where to buy the BOSTON Spur Gear NF40 worldwide?

3G Electric supplies the BOSTON Spur Gear NF40 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order this genuine BOSTON inch spur gear for your application.

How to select the right BOSTON spur gear for an inch-system drive?

To select the right BOSTON spur gear, match the pitch, number of teeth, bore diameter, and pressure angle to your shaft and mating gear. The NF40 has a 7/8 in bore, 40 teeth, and 14.5° pressure angle. Ensure the gear material (cast iron) suits your load and environment. 3G Electric can help confirm fitment.

Used in

Common applications for BOSTON
CNC and linear motion systems — Boston rectangular gear racks (e.g., L514-6, L515-6) convert rotary motion to precise linear movement.
Right-angle drive assemblies — Boston spiral miter gears (HLSK104Y R/L) change shaft direction in compact industrial machinery.
Material handling and conveyors — Boston gear racks and pinions provide linear actuation for indexing and positioning mechanisms.
Packaging equipment — Boston miter gears transmit torque between intersecting shafts in synchronized drive trains.
Valve and damper actuation — Boston gear racks offer manual or motorized linear stroke for flow control devices.
Food processing machinery — Boston steel gear racks and miter gears are used in washdown-adjacent drive systems where corrosion resistance is managed through material selection and lubrication.
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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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Inch-system spur gear with standard hub, 18 teeth, 1/2 in bore diameter, 1.13 in pitch diameter, Pitch 16, 14.5° pressure angle, steel construction, no keyway. Used for power transmission between parallel shafts in moderate-load applications such as conveyors and industrial drives
BOSTON
Inch-system spur gear with standard hub, 18 teeth, 1/2 in bore diameter, 1.13 in pitch diameter, Pitch 16, 14.5° pressure angle, steel construction, no keyway. Used for power transmission between parallel shafts in moderate-load applications such as conveyors and industrial drives

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