News For Nuttall Gear

26 Dec 2012

Enclosed Drives for Movable Bridges Specification Consistency

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Moveable Bridge

By John G. Proven, P.E., Nuttall Gear

As a manufacturer of engineered enclosed drives, Nuttall Gear is accustomed to variances in specification requirements depending on the industry and the function of the gearbox. The duty cycle of these units can vary significantly from heavy shock load on a coal crusher where the service factor can exceed 2.0 to a coiler in a steel mill that can have a service factor of 1.0.

AGMA, the American Gear Manufacturer’s Association, has established service factor guidelines for many of the applications.  Most of the movable bridge applications call for a 1.5 service factor.  Based on the expected duty cycle and the typical operation of the reducer, the application of the service factor will ensure a durable gearbox with an expected long life.  Read Article

12 Nov 2012

Best Practices Series: Large Gearbox Maintenance and Lubrication

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Large Gearbox 8 Roll

By John G. Proven, P.E. Nuttall Gear

Reliability and durability of gearboxes depends on the following:

• The design parameters are properly specified
• The unit is properly maintained
• The unit receives proper lubrication of gearing and bearings

25 Jun 2012

Altra Industrial Motion Brands Offer a Wide Range of Power Transmission Products for Coal-Fired Power Plant Applications

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altra-industrial-motion-products

As industry leaders in electromechanical power transmission products, the companies of Altra Industrial Motion are uniquely positioned to leverage their products’ reputations, reliability and technologies to help achieve the necessary energy production at coal fired power plants worldwide. Read Article

28 Nov 2011

Application Profile: Moveable Bridge

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Hamilton-Bridge

Products: Custom-Designed Heavy-Duty Gear Drives

Moveable Bridge

When replacing the Hamilton Avenue moveable bascule bridge over the Gowanus Canal in New York City, project engineers required a reliable, heavy-duty gear drive solution to function as the primary differential speed reducer and secondary reducers for the bridge drivetrains. Read Article

06 Jun 2011

Altra Introduces Package Of Power Transmission Products For Nuclear Power Infrastructure Support

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Nuclear Power

The International Energy Agency has stated that the World must invest $26 trillion (ÂŁ16.7 trillion) over the next two-decades to avert a global energy shock. Despite recent events, industry commentators still believe much of this investment will be directed at nuclear power. Many new stations will be built and the infrastructure of these, and existing nuclear installations will come under pressure to perform reliably, as never before. This, in turn, will mean unprecedented levels of support from companies that supply specialist products and services to the industry.

Altra Industrial Motion has anticipated this development and has produced, via its Group companies, a package of electromechanical power transmission products designed for use in critical, safety-related nuclear power applications, where reliability and accuracy are necessary to avoid costly downtime, assure safe operations and optimise production output. Read Article

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