Engineered Solutions
High Speed Units
For over 60 years, Nuttall Gear has been supplying “Step Up” or “Step Down” High Speed gear drives to the industrial and nuclear markets. Our Type SU / SD High Speed units are available in ratings to 40,000 HP, speeds to 45,000 RPM in ratios up to 15:1. Millions of hours of operation have proven the design integrity and reliability of Nuttall Gear’s Type SU / SD on applications such as compressors, fans, pumps, and turbines. Gear drive designs are available for AGMA 6011, API 613 or 677, and Class I-E Nuclear Safety Related Applications. Nuttall Gear understands each application can have its own special requirements and we can design and manufacture our High Speed drive to meet your needs.
Our standard design features include:
- A rigid cast iron or welded steel housing
- Dynamically balanced precision double helical gearing for uniform load distribution and quiet running
- Oversized split sleeve bearings for smooth, efficient running
- Split labyrinth non contact oil seals for long life
- Self contained forced oil lubricated gears and bearings
Options are available and can include:
- Multi-speed (shifters) gear train variations with either manual, pneumatic or hydraulic shifting
- Remote mounted custom lubrication systems
- Sophisticated monitoring systems to measure temperature, pressure, and vibration
- Built in turning gears
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2,500 HP size SU14-1200L with self contained lubrication system and auxiliary sump for centrifugal pump application |
6,000 HP Compressor drive train utilizing Nuttall size W2SSU16-1200L multi-speed unit with self contained lubrication system, integral turning gear, and pneumatic shifting |
Precision double helical gearing from above W2SSU16-1200L multi-speed unit |