Gearbox Used in Coil Tubing Tractors

Cotta is completing the assembly and paint process on split shaft PTO’s that will be used in heavy duty, over-the-road coil tubing semi tractors which are used to drill oil wells.  The gross weight of one of these units averages over 100,000 lbs, with the trailer having 6 axels, and the truck having 3 axels due to the weight.  In this application, the injector head is suspended in the air over a well, and there is a continuous roll of high pressure coil of drill pipe, with some of it being 4,000 ft. long and weighing thousands of pounds.  The injector head unrolls and straightens the tube, and injects it into the well.  The gearbox is being used to run all of the hydraulic accessories on the trailer.  While in road mode the drive shaft, which passes through the gearbox, allows the truck to be driven.

Specifications:

Ratio: 1 to 1 PTO Drive

Max Input Speed:  3000 RPM

Max Torque:  1200 Ft-Lb Thru Gears

Thru Drive Torque:  12500  Ft-Lb

Approximate Weight:  540 Lb

Cotta designs the most reliable, durable, and powerful products available in the industry. Cotta products are designed to meet the toughest and harshest environments in the world.

Learn more:  Capabilities Brochure