Rebuild & Field Services
Your business depends upon the continued operation of your rotating machinery. Nuttall Gear’s Service Division provides solutions designed to keep your rotating machinery in operation. Our extensive experience of 120 plus years in gear drive applications, combined with our manufacturing and design capabilities enables us to provide a single comprehensive source to make sure you are up and running. Our capabilities are not limited to our own design, we can offer a cost effective repair solution for any manufacturer’s gear drive:
| Allen Gear | Foote-Jones | Nuttall Gear |
| Amarillo | General Electric | Philadelphia Gear |
| Brad Foote | Holroyd | Renk |
| Chemineer | Flender | Renold |
| Cleveland Gear | Hansen | Rexnord |
| Cone Drive | Horsburg & Scott | Sterling |
| D.O. James | Lightinin | Sumitomo |
| David Brown | Link-Belt | Western |
| DeLaval | Lufkin | Westinghouse* |
| Delroyd Worm Gear | Maag | WestTech |
| Falk | Marley | Wilson Gear |
| Farrel | Mixco | Winsmith |
*Nuttall Gear is the sole authorized repair center for Westinghouse gear drives. We maintain all original drawings and specifications.
Repair and Rebuild
Comprehensive services include inspection, remanufacturing, reverse engineering, and repair of all manufacturers’ helical and worm gear drives. With our Maag SP160 gear checker, gears are measured and charted for lead, profile, spacing, runout, and composite accuracy. Precise measurements of housings are achievable with the use of a computer controlled coordinate measuring machine. Contact checks of mating gears can be verified in the housing, or on our precision contact check stand. In addition to our general machining capabilities, we have in-house heat treatment, spray welding, and dynamic balancing equipment. All complete rebuilds are returned in new condition and include a new factory backed warranty.
15 Ton Trolley Received |
15 Ton Trolley Rebuilt |
WHTR13 Received |
WHTR13 Rebuilt |
SV340 Received |
SV340 Rebuilt |
Redesign and Rerate
Nuttall Gear’s strong application and design engineering experience has earned us a reputation for producing high-quality unique helical and worm gear drives. Reverse engineering, ratio changes and drive configuration changes are available for all manufacturers’ gear drives. Increased ratings can often be achieved with just changes in geometry, heat-treating process, improved gear accuracy, or thermal capacity.
System Analysis
Nuttall Gear’s engineers can develop mathematical models to perform a torsional system study. This system study can be used to determine the natural frequencies of the system for comparison to the forcing frequencies of the components. Coincident frequencies can produce system resonance resulting in severe overload. A change in components can often eliminate system resonance.
Quality Assurance
From inspection and teardown to assembly and complete unit testing, each step is planned and executed within the requirements of our Quality Management System. Our program was designed to meet the strict requirements of the nuclear industry as well as the world-recognized standards established by ISO9001:2000. Documented traceability for materials, processes, and testing is part of the Quality Management System that applies to all rebuild and service work.
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