U.S. MOTORSRigid Base 3-Phase General Purpose AC Motors

U.S. MOTORS Motor: Flange Mount, Totally Enclosed Fan Cooled, 40 hp, 230/460V AC

The U.S. MOTORS JF21 is a 40 hp Rigid Base 3-Phase General Purpose AC Motor with a TEFC enclosure. It operates at 3,600 RPM and 230/460V AC, drawing 92.0/46.0 A full load current at 60 Hz.

SKU 3G-OTH-70768

Also listed as: JF 21 · JF-21

Brand

U.S. MOTORS

Item

Motor: Flange Mount, Totally Enclosed Fan Cooled, 40 hp, 230/460V AC

Local availability & support — Singapore

Local office: 20 Woodlands Link #09-05, Singapore 738733
Phone: +65 8878 8355
Delivery: Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment: Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to: Singapore

Technical Specifications

U.S. MOTORS

Manufacturer Part Number

JF21 

Type

Totally Enclosed Fan Cooled, 40 hp, 3,600 RPM 

230/460V 

MOTORS Motor

Flange Mount 

Motor Enclosure

TEFC 

Nameplate RPM @ 60 Hz

3,600 RPM 

Full Load Current @ 60 Hz

92.0/46.0 A 

Nameplate Voltage @ 60 Hz

230/460V AC 

Technical Documents

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U.S. MOTORS Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The U.S. MOTORS JF21 is a 40 hp Rigid Base 3-Phase General Purpose AC Motor with a TEFC enclosure. It operates at 3,600 RPM and 230/460V AC, drawing 92.0/46.0 A full load current at 60 Hz.

Frequently Asked Questions

What is the U.S. MOTORS JF21 motor used for?

The U.S. MOTORS JF21 is a 40 hp rigid base 3-phase general purpose AC motor used in industrial applications such as pumps, fans, compressors, and conveyors. Its TEFC enclosure protects against dust and moisture, making it suitable for harsh environments.

What are the specifications of the U.S. MOTORS JF21 motor?

The U.S. MOTORS JF21 is a 40 hp, 3,600 RPM, 230/460V AC, 3-phase motor with a TEFC enclosure. Full load current is 92.0/46.0 A at 60 Hz. It features a rigid base and flange mount design for secure installation in industrial equipment.

Where to buy the U.S. MOTORS JF21 motor worldwide?

3G Electric supplies the U.S. MOTORS JF21 motor to customers 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 40 hp TEFC motor.

How to select the right U.S. MOTORS motor for an application?

Select a U.S. MOTORS motor by matching horsepower, RPM, voltage, and enclosure to your load requirements. For the JF21, confirm 40 hp, 3,600 RPM, and 230/460V AC supply. Ensure the TEFC enclosure suits your environment. 3G Electric can help interpret your needs and source the correct unit.

Used in

Common applications for U.S. MOTORS

Pumping systems — U.S. MOTORS A40P1CS (40 hp, 460 V, 3,570 RPM) for centrifugal water pumps in industrial facilities.

HVAC fans — U.S. MOTORS A7P4C (7.5 hp, 460 V, 885 RPM) for large air-handling unit fan drives.

Conveyor drives — U.S. MOTORS A25P1CS (25 hp, 460 V, 3,565 RPM) for material-handling belt conveyors.

Compressor applications — U.S. MOTORS A30P3C (30 hp, 460 V, 1,190 RPM) for rotary screw air compressors.

Machine tool spindles — U.S. MOTORS HD3P1H (3 hp, 200 V, 3,535 RPM) for high-speed milling machine spindles.

Elevator traction — U.S. MOTORS elevator motors (specialized line) for hydraulic or traction elevator systems.

U.S. MOTORS Products

3G Electric supplies U.S. MOTORS rigid base 3-phase general purpose ac motors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all U.S. MOTORS products →Contact our engineers →