Hydraulic Repair

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Our United Central Promise

  • Free evaluations
  • Experienced factory trained technicians
  • 12-month operational warranty
  • Emergency ‘rush’ services available
  • Failure analysis and test reporting
  • Remanufactured and surplus spares available
  • National network of ISO 9001:2015 certified repair facilities

The United Central Industrial Supply and SunSource team is the most complete and comprehensive hydraulic pump, motor, and cylinder repair organization in the USA. We have over 35 years experience in the remanufacturing and repairing of hydraulic components from nearly every OEM in business. We have developed an in-depth series of procedures to catalog, evaluate, estimate, repair, test and return ship your equipment utilizing the highest quality craftsmanship with the quickest turnaround.

Our Process

  • Customer’s units are assigned a unique job number and all OEM information is recorded.
  • Units are completely torn down by highly trained technicians for evaluation. The hydraulic technicians analyze the components to look for signs of wear, excessive heat, and contamination, in effort to hypothesize how this component failed.
  • Once it has been determined which parts require replacement, the parts are sourced and a quote is generated for the customer. No work is performed until United Central Industrial Supply receives approval from the customer.
  • Upon approval, the parts are ordered and the repairs are performed.
  • Unit is tested on our custom hydraulic test stands and the unit’s performance is measured against OEM specifications. Units do not pass test if they do not meet OEM tolerances.
  • Unit is securely packaged or banded to a skid for shipment. All parts and materials guaranteed for one full year after installation. Our workmanship and labor are unconditionally guaranteed.

Pumps & Motors

We service hundreds of hydraulic pumps every week. Every unit is completely disassembled and evaluated so that we can identify possible root causes of failure. Damaged parts are replaced or remanufactured, and the unit is rebuilt. The final product is load tested to confirm that it performs to OEM-specific standards before being painted and packaged for return.

Oil Gear Pumps

Our repair group is widely recognized as the aftermarket leader in Oilgear repairs and exchanges. To meet the needs of our customers, we stock hundreds of rebuilt oilgear pumps. Most of the time we can have a rebuilt Oilgear pump on the way to you in 12 days, and all rebuilt exchanges carry a 2-year operational warranty


United Central Industrial Supply’s industrial repair team has been repairing all major brands of servo valves, proportional valves, and directional valves for over 35 years. Our skilled technicians average over 15 years experience and will thoroughly test, evaluate, and repair your valve to OEM specifications in under 5 working days. If your need is critical, we can offer emergency turnaround. All valves are static and dynamically system tested to ensure a quality repair, complete with our 1-year operational warranty

Servo Valves

Directional Valves

Proportional Valves

Cylinders / Actuators
United Central Industrial Supply can repair and remanufacture all of our hydraulic cylinders. Our in-house machining department cuts down the lead time of repairs significantly, and allows us to produce parts for your damaged cylinders. We have the capability to manufacture new rods, pistons, bushings, and tubes. Every cylinder we repair leaves our facilities operating like a brand new cylinder. Our experienced technicians can repair cylinders up to 32 ft. in length and 36 in. diameter, up to 40,000 lbs. in weight. Whether it is repair work or manufacturing a new unit, fast turn around and quality work is our objective for all customers. All incoming units are thoroughly inspected, cleaned, diagnosed, and repaired by skilled technicians, who average over 20 years of experience. A typical repair of a precision actuator includes such work as grinding and chroming the rod, honing the tube, installing new seals, calibrating the LVDT and testing the actuator with its servo valves.

Precision Servo Actuators
United Central Industrial Supply services all makes and models of rotary and linear precision actuators. We have repaired actuators as small as 2.3 kip and as large as 250 kip for many different applications within the testing industry. All units sent in for repair are thoroughly inspected, cleaned, diagnosed and repaired by skilled technicians. Your unit will be returned in like-new condition. As with every repair at United Central repair, all actuators are returned with our 1-year operational warranty.

Brand Names Include

  • Abex
  • Atchley
  • Bosch
  • Calzoni
  • Cincinnati
  • Daikin
  • Denison
  • Dynapower
  • Dynex Rivett
  • Hagglund
  • Hanna
  • HPM
  • Hydro-line
  • Hydura
  • Milwaukee
  • MTS
  • Nachi
  • Oilgear
  • Parker Hannifin
  • Pegasus
  • Racine
  • Rexroth
  • Sumitomo
  • Tokimec
  • Tokyo Precision
  • Towler
  • Voith
  • Wagner
  • Yuken

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