Silhouette of Hydra Rig Injector

HR-635 Coiled Tubing Injector

Engineered and designed for reliability and reduced maintenance, Hydra Rig injectors are backed by the experience achieved from the manufacturing of over 2,400 injectors.

  • Description Description
  • Ruler Specifications
  • Resources Resources

The heart and soul of any coiled tubing system is the injector head, and our line of injectors are recognized worldwide as the best in the market today. Designed to handle 1 to 3⅜ in. coiled tubing strings, the Hydra Rig™ HR-635 coiled tubing injector is capable of running up to 130,000 psi yield strength string designs.

Our 6-series coiled tubing injector with 35,000-lb continuous lifting capacity.

Whether you are buying a complete new unit or replacing the injector on your existing unit, our injectors offer the performance and dependability demanded by your customers in today’s toughest oilfield conditions around the world.

General Features

  • Hub odometer mounted on idler shaft for total footage indication
  • Minimum parts count for reduced maintenance
  • Narrow width for easier rig access: 47 in.
  • Single hydraulic load cell standard (optional pipe light available)
  • Forklift pockets for yard handling
  • Access area for top load stripper
  • Superior slow speed control (inches per minute)


  • Radius tubing guides: 60 and 72 in.
  • Injector counter
  • Fold-down walkways
  • Electronic or combination of electronic/hydraulic load cells
  • Fall protection device

Traction System

  • Patented "Quick Connect" Gripper System (1-3 seconds required to remove or install a gripper) 
  • Hardened and grooved single-piece grippers
  • Elastomeric suspension system for grippers (patented)
  • "Sealed-for-life" chain bearings—reduced maintenance with no greasing of chain bearings required
  • Direct-acting hydraulic down-tension chain system
  • Spray-type injector-chain lubricating system
  • Skates designed for smoother chain-bearing entry into traction system

Drive System

  • Deep reduction, purpose-built gear drives
  • Dual 3,000 psi-drive hydraulic motor input 
  • Counterbalance valves plumbed directly to motor
  • Tubing odometer for maintenance and inspection requirements
  • Dual spring-applied/pressure-released brake mounted between the hydraulic drive motors and gear drives

Model HR-635 Specifications


Max. speed/min. displacement)

265 ft/min

Max. speed/max. displacement)

115 ft/min

Continuous lifting capacity

35,000 lbs

Continuous snubbing capacity

15,000 lbs

Lifting capacity through outer frame

41,000 lbs

Lifting capacity from stripper

35,000 lbs


100 hp continuous with 100 °F ambient conditions

Assembled weight: 60 in. gooseneck, stripper box, min. handling slings, lube tank, excludes fall pole, other options

5,400 lbs

Approx. individual gripper weight     

3 lbs

Coiled tubing sizes

1 to 3⅜ in.    

Max. coiled tubing strength     

130,000 psi

  • Hydra Rig HR-635 Coiled Tubing Injector Data Sheet

Hydra Rig Product Updates

It is our commitment to continue the technological advancement of the trusted Hydra Rig equipment that has been leading the coiled tubing and snubbing industries for decades. Please contact us for our latest product updates.

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