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LM22841 – Leeson 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – LM22841

LM22841 – Leeson 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – LM22841

LM22841 Leeson 4:1 Speed Ratio Motors

Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.

  • Inverter duty insulation system
  • Constant HP range at 2x base speed 56 – 256T frames
  • Constant HP range at 1.5x base speed 284T – 445T frames
  • No mounting available for encoder devices
  • Normally closed thermostats
  • Steel and aluminum frame construction – see notes
  • Precision balanced rotors

Leeson Motors
Regal Beloit

Description

LM22841 – Leeson 20 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – LM22841

LM22841 Leeson 4:1 Speed Ratio Motors

Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.

General Specifications

UPC: 691720328934 Weight: 185 LB
Packaged Length: 16.38 IN Packaged Width: 10.5 IN
Packaged Height: 8.12 IN

Nameplate Specifications

Output HP: 20 Hp Output KW: 14.9 kW
Frequency: 60/50 Hz Voltage: 230/460 V
Current: 50.0/25.0 A Speed: 1765 rpm
Service Factor: 1 Phase: 3
Efficiency: 91 % Power Factor: 82
Duty: Continuous Insulation Class: F
Design Code: INV KVA Code: F
Frame: 256TC Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 309 Opp Drive End Bearing Size: 208
UL: Recognized CSA: Y
CE: Y IP Code: 43

Technical Specifications

Electrical Type: Squirrel Cage Inverter Duty Starting Method: Inverter Only
Poles: 4 Rotation: Reversible
Resistance Main: .468 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Aluminum
Shaft Type: T Overall Length: 25.75 in
Frame Length: 13.75 in Shaft Diameter: 1.625 in
Shaft Extension: 4 in Assembly/Box Mounting: F1/F2 CAPABLE

Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
1/3 135.00 540.0 92.00 155.0 200 20.00
Break-Down 86.00 344.0 145.00 244.0 1,625 67.0 20.00
Full Load 25.00 100.0 59.50 100.0 1,765 20.00
2/3 115.00 460.0 105.00 176.0 1,250 20.00
Locked-Rotor 140.00 560.0 108.00 182.0 0 41.5 20.00
Pull-Up 125.00 500.0 94.00 158.0 900 20.00
No Load 9.50 38.0 0.00 0.0 1,800 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 9.50 11.50 15.00 19.50 25.00 28.50 31.00
Rated Output (KW) 0.50 4.50 8.50 12.50 16.50 19.00 20.50
Efficiency (%) 0.0 85.5 90.2 91.0 91.0 90.2 89.5
Power Factor (%) 7.0 48.0 70.0 79.5 82.0 84.0 84.5
Speed (RPM) 1,800 1,790 1,785 1,775 1,765 1,760 1,755
Temp. Rise @ FL 0.0 0.0 0.0 0.0 56.0 75.0 90.0
Torque (ft-lbs) 0.00 14.50 29.50 44.50 59.50 68.50 75.00

Leeson Motors
Regal Beloit

Winter Weather Notice:

Our sales office and customer service teams may be disrupted on January 9th, 2025 due to a Severe Winter Weather advisory in their area. We apologize for any potential delays or disruptions this may pose to you and we appreciate your patience during this event.

 

In the meantime, please feel free to reach out to us for any quotes, questions, or concerns and we will do our best to respond in a timely manner – orders will still be processed normally.

Thanks!

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Our warehouses will be closed 12/24/2024-01/01/2025:

Our Sales Office will remain open with limited hours during this time and will continue to process orders – all shipments will resume on 01/02/2025 – feel free to purchase from our shop or contact us for quotes as usual.

*FYI: If you’ve placed an order with us before 12/24/2024, we are currently experiencing delays in manufacturing/shipping and are working hard to provide updates and complete fulfilment as quickly as possible – we thank you for your business and your patience*

Happy Holidays from IMEX!!!