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Whether you’re local or farther away you can ship your hydraulic unit in for repair to our Hydraulic Repair facility. Contact us today at 800-728-5168 and check out the Shipping Info link below for more information on how to mail in your Hydraulic unit for repair at our Oklahoma City facility. If you do not see your model code on our site, email or call 1-800-728-5168 for a price quote, we have 10,000 hydraulic units that are not listed on site yet.
Sundstrand Hydraulics builds high-performance pumps, motors, and hydrostatic transmissions for demanding applications. These components keep heavy machinery moving in industries like construction, agriculture, and industrial manufacturing. When they fail, downtime gets expensive fast. That’s where expert repair and fast replacements make the difference.
History of Sundstrand Hydraulics
Sundstrand has been a major name in hydraulics for decades. Originally founded as the Rockford Tool Company in 1905, the company later became Sundstrand Corporation, expanding into aerospace, industrial, and hydraulic applications. By the mid-20th century, Sundstrand had developed hydrostatic transmissions and axial piston pumps, technologies that became industry standards.
In 1999, Sundstrand merged with United Technologies Corporation, forming Hamilton Sundstrand. While the aerospace division moved forward under that name, the hydraulic components remained in use across heavy equipment, manufacturing, and industrial systems. Today, Sundstrand hydraulic pumps and motors continue to power construction machinery, mining equipment, and high-performance industrial applications worldwide.
Sundstrand Hydraulic Pump & Motor Repair
Hydraulic pumps and motors take a beating under high pressure. Seals wear out, bearings degrade, and internal components lose efficiency over time. Whether it’s a variable displacement piston pump or a closed-loop hydrostatic motor, restoring performance requires precise machining, high-quality seals, and thorough testing.
We handle:
- Sundstrand Series 15, 18, 20, 21, 22 & 23 hydrostatic pumps and motors
- Sundstrand Series 40 & 90 piston pumps and motors
- Sundstrand Sauer-Danfoss integrated systems
- Open-loop and closed-loop system components
Rebuilt units go through pressure testing to verify efficiency and durability before returning to service.
Sundstrand Replacement Pumps & Motors
Sometimes a repair isn’t the best option. If a unit is too damaged or parts are obsolete, a replacement gets machinery running faster. We supply new and remanufactured Sundstrand pumps, motors, and transmissions, built to original factory specs.
Replacement options include:
- Complete hydrostatic transmission assemblies
- Direct swap piston pumps and motors
- Aftermarket replacements for older Sundstrand models
Common Failures & Warning Signs
Catching hydraulic failures early saves money. These issues often signal pump or motor problems:
- Loss of power: Weak or inconsistent performance points to internal wear
- Overheating: Heat buildup suggests a failing pump, clogged filter, or misalignment
- Unusual noises: Grinding, whining, or knocking sounds indicate cavitation or damaged bearings
- Leaks: Oil around the pump shaft, motor housing, or fittings means worn seals
- Slow operation: Delayed response or sluggish movement suggests internal leakage
Ignoring these signs leads to full system failure. Repairs cost less than replacing an entire hydraulic system.
Expert Support for Sundstrand Hydraulics
With decades of experience, our hydraulic specialists diagnose issues quickly and provide cost-effective repair and replacement options, including hydraulic pump repair and hydraulic motor repair and hydraulic pump repair. Whether it’s a Sundstrand 15 Series pump in an industrial press or a Series 90 motor in mobile equipment, we get your system running again.
Send in your failed unit for evaluation. Get a repair estimate or replacement recommendation within days. Minimize downtime—get Sundstrand hydraulic components working like new again.
Get a Quote on Sundstrand Repairs or Replacements
If you need a Sundstrand hydraulic pump, motor, or component repaired, contact us today. We provide fast turnaround times, expert diagnostics, and a commitment to keeping your hydraulic systems operational.
More Information on Sundstrand Hydraulics
Looking to better understand the performance, design, and maintenance of Sundstrand Axial Piston Motors and Pumps? Our free informational pamphlets provide valuable technical insights and product specifications to help engineers, technicians, and procurement professionals make informed decisions.
Sundstrand Axial Piston Pumps Information
Sundstrand Axial Piston Motors Information
