Lex – Drive for Sucker Rod Pumps (SynchroGear™)

Drive for Sucker Rod Pumps (SynchroGear™)

SynchroGear™ technology is a drive for sucker rod pumps with up to 98% efficiency. The system integrates power-efficient Universal Permanent Magnet (PM) Motor and smart Variable Speed Drive. Сonventional V-Belt Transmission is not applicable.

Drive for Sucker Rod Pumps (SynchroGear™)

SynchroGear advantages compared to V-belt systems with Asynchronous Motor


About 75% of artificial lift wells worldwide use sucker rod pumps. For decades, the traditional V-belt transmission system with an asynchronous motor has been the only way to drive and control pumping units.

The sucker rod pump is normally used in shallow and medium-depth marginal wells. The sucker rod pump with the asynchronous motor and V-belt transmission associates with low efficiency of the “motor – V-belt – gearbox” system, insufficient controllability, overheating when the speed deviates from the nameplate values, and risk of premature failure.

SynchroGear is a surface motor with permanent magnets and smart control. This is an effective and efficient replacement of the traditional V-belt transmission and the asynchronous motor. Since the rotor is mounted on the gearbox input shaft, and the stator is mechanically attached to the gearbox housing, the SynchroGear Technology eliminates the need for the V-belt system.

The complete installation process (including dismantling, installation of SynchroGearTM, VSD check/set-up) takes approximately 3 hours, with PM motor installation taking a maximum of 1 hour only.

The smart control system with an auto-adaptation algorithm description can:


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