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Leeson AC gearmotor, TEFC enclosure, right-angle output shaft

Leeson

Leeson M1145129.00 AC Gearmotor 86 rpm 208-230V

SKU CH-TJXE-CF8C9

A right-angle AC gearmotor delivering 86 rpm and 138 in-lb torque from a 20:1 ratio, inverter-rated for 208-230 V three-phase supply

  • TypeGearing
  • Delivers 138 in-lb maximum torque for demanding loads
  • Runs at 86 rpm with 20:1 gear ratio for precise speed control
  • Operates on 208-230V AC three-phase power for industrial compatibility
  • TEFC enclosure protects motor in harsh environments
  • Inverter rated for variable speed applications

AC Gearmotor 86 rpm 208-230V

The Leeson M1145129.00 is a three-phase AC gearmotor built for continuous industrial duty. It delivers 86 rpm nameplate speed through a 20:1 right-angle gear set with a single right-hand output shaft. The TEFC enclosure and Class F insulation suit conveyor, feeder and positioning drives that run around the clock.

Three-phase 208-230V supply

Operation requires a balanced three-phase 208-230V AC source; single-phase mains cannot drive this motor directly. The windings are rated for inverter duty, so a VFD can vary speed and torque within the motor’s thermal limits. Horizontal mounting or vertical shaft-down orientation is approved; vertical shaft-up is not.

138 in-lb torque with 235 lb overhung load capacity

The gearbox produces up to 138 in-lb of output torque, sufficient for moderate material-handling and automation tasks. The bearing arrangement supports 235 lb of overhung load at the shaft, limiting the size of pulleys, sprockets or lever arms that can be mounted directly. No brake is fitted, so external holding or stopping means are needed when the load must stay stationary after power removal.

Highlights

  • Delivers 138 in-lb maximum torque for demanding loads
  • Runs at 86 rpm with 20:1 gear ratio for precise speed control
  • Operates on 208-230V AC three-phase power for industrial compatibility
  • TEFC enclosure protects motor in harsh environments
  • Inverter rated for variable speed applications

Specifications

TypeGearing

Questions about this item

Which gear ratio should I choose for my application?

This unit has a fixed 20:1 gear ratio, so selection depends on whether that reduction matches your required output speed and torque.

What does the 86 RPM nameplate speed mean in actual operation?

The motor delivers 86 RPM at the output shaft under rated load when powered at 208-230 V AC, providing 138 in-lb of torque.

Is the 208-230 V AC supply single-phase or three-phase, and what does that limit?

It is a three-phase motor, so it requires a three-phase supply or a compatible inverter; single-phase mains cannot drive it directly.

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