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250 HMI 475 Top Drive

Tesco’s 250 ton HMI 475 Top Drive is a full-featured hydraulic top drive built for shallow drilling and workover applications and is the most compact model in Tesco’s hydraulic top drive offering.

Capable of producing up to 354 kW (475HP), the 250 HMI 475 employs a hydraulic motor and gear train and can be operated by an independent diesel, AC or DC traction motor drive.

The complete system including the top drive, torque system and hydraulic power unit (HPU) can be installed in less than one day with only minimal rig modifications needed, if any. A customizable torque arrest system and a mud saver can also be incorporated into the system’s design.

The 250 HMI 475 offers all critical pipe-handling functions including elevator link-tilt, extend/retract functionality (for making mouse hole connections). The grabber will accommodate tool joints from 2-3/4 in. to 6-5/8in. OD.

The 250 HMI 475 top drive’s unique design integrates the swivel, gearbox and load frame resulting in a very compact unit. An optional programmable logic control (PLC) enhances communications between the driller’s panel and the drive system, optimizes efficiency and provides important safety interlocks.
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