Nuttall Gear Custom Heavy-Duty Drives for the Tamiami Canal Single Leaf Bascule Bridge

The original swing bridge was recently replaced with a single-leaf bascule bridge that will allow improved water flow and more easily accommodate increased marine and vehicular traffic. The new bridge features a pedestrian walkway as well as a bicycle lane.
Nuttall Gear worked closely with the bridge engineers to design and manufacture several new enclosed gearboxes for the bridge. All units featured fabricated steel housings and through hardened gearing and were load tested to 300%. All welds were inspected by an Independent Certified Weld Inspector (CWI). All drives have a 40,000 L10 bearing life at rated load.
- Primary Triple-Reduction Differential Reducer:
Input rating: 225 HP @ 900 RPM, Reduction ratio: 12:1 - Secondary Parallel Shaft Reducer:
Input rating: 113 HP @ 75 RPM, Reduction ratio: 33.19:1 - Right Angle Reducer:
Input rating: 225 HP @ 900 RPM, Reduction ratio: 1:1 - Right Angle Vertical Reducer:
Input rating: 225 HP @ 900 RPM, Reduction ratio: 1:1

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- Custom-designed enclosed reducers
- Through hardened gearing
- Fabricated steel housings
- Load testing to 300% performed inhouse
- 40,000 L10 bearing life at rated load
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