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CYJTYP Series

CYJTYP Series Permanent Magnet Intelligent Drive Motor for Beam Pumping Units

A large-diameter, flat, low-speed high-torque permanent magnet motor that couples straight onto the gearbox input shaft of a beam pumping unit — the belt drive and the motor's own bearings both disappear.

15–75 kWBelt drive deletedFlat rotor
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CYJTYP series permanent magnet intelligent drive motor for beam pumping units

CYJTYP is a semi-direct drive: a low-speed, high-torque permanent magnet synchronous motor mounted directly on the gearbox input shaft. Removing the belt drive removes a transmission stage and a set of consumables; removing the motor's own bearings reduces the axial depth of the machine, which is why it is built in a large-diameter flat form.

The change also improves the mechanical situation at the gearbox: without a belt pulley there is no radial pull on the gearbox input bearing, which is a known wear point on this equipment.

The shaft bore is tapered to match the gearbox output taper. Fit tolerance on that taper is not optional — a taper machined outside specification is how these motors come loose from the gearbox.

Reported energy saving on beam pumping unit projects ranges from 21% to 76%, varying considerably by well and by what was replaced.

Core specifications

ParameterValue
Frame sizeH480 – H700 mm
Power range15 – 75 kW
ConstructionLarge-diameter flat rotor, direct coupling to gearbox input shaft
Voltage380 V
Protection degreeIP55
Insulation classClass F
Duty typeS1 (continuous)
CoolingIC410, totally enclosed natural cooling
Speed controlStepless adjustment of strokes per minute

Standards and certification

  • Q/1083 SLJ 032-2019 (permanent magnet intelligent drive motor)

Typical applications

  • Beam pumping units in oilfield artificial lift

Selection guide

Conventional beam pumping units where the belt drive is a maintenance item and the well would benefit from stroke rate adjustment. It couples directly to the gearbox input shaft, so the pumping unit itself does not change.
The shaft bore is tapered to match the gearbox output shaft. The taper dimension has to be held tightly — if it is not, the motor works loose from the gearbox in service. Send us the gearbox make and model with the enquiry.
NEMA D is the lower capital cost and the established answer. CYJTYP costs more up front and returns it through energy and through the belts, sheaves and alignment work that stop existing. Which one wins depends on your electricity tariff and how many units you run.

FAQ

Recorded results on LEADGO beam pump projects span 21% to 76%. That spread is not measurement noise — it reflects how badly oversized and how inefficient the machine coming out was. Any figure quoted before a well survey is a guess.
Datasheets, dimension drawings and certification copies are issued on request — tell us the rating and we will send the documents for that specific model.

Downloads

DatasheetPDF · 463 kBDownload
Installation & maintenance manualInstallation, commissioning and servicingRequest
CertificationCertificates and test reportsRequest

Certificates and test reports are issued against the specific model and rating rather than the series, so we send the ones that apply to your order. Tell us the rating and the market and we will send them.

Related products

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Control system for PM intelligent drive motors

NEMA D

Oil well pump duty

TYPL Series

Flameproof PM for progressive cavity pumps

Technical articles on this series

Artificial Lift Motors: Beam Pump, PCP and ESP Compared

Three lift methods, three different motor problems. The load shape decides the machine — and on two of the three, the rating is set by starting, not running.

Read

How to Size a Motor for a Beam Pump: A Three-Step Guide

Sizing a beam pump motor is not a power-table lookup. Get the stroke load, the drive topology and the site check right — and in that order.

Read

Permanent Magnet vs Induction Motors in Oilfield Duty

Where permanent-magnet synchronous motors genuinely beat induction motors in oilfield service, where they do not, and the demagnetisation limit that decides it.

Read

Request a quote — CYJTYP Series

Tell us the rating, quantity and application and an engineer will come back with a specification, the documents for that model, and a price.

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