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Gigantic 113,000-kg ring gear for gold mine offers 24,000 hp

Milwaukee, WI – Rexnord has completed the manufacture of its largest Falk Ring Gear in weight and horsepower – 250,000 lb. (113,000 kg) and 24,000 hp (18 mW). In terms of weight and horsepower, the ring gear is one of the...


Milwaukee, WI – Rexnord has completed the manufacture of its largest Falk Ring Gear in weight and horsepower – 250,000 lb. (113,000 kg) and 24,000 hp (18 mW). In terms of weight and horsepower, the ring gear is one of the world’s largest.

This six-part ring gear will be used to refine material in a gold mine in the Southwestern United States. The order was placed in March 2012.

With manufacturing beginning in April 2012, numerous Rexnord associates – almost 100 – took part in making this giant gear a reality. “From engineering, through the foundry and the machine shop, Rexnord associates have worked efficiently with the customer to produce a high-quality, high-power gearing solution,” said Dave Olson, director, Commercial Operations, Mill Products. “Through this tremendous accomplishment, we are demonstrating our company’s expertise and dedication to the industry.”

Gear fast facts:

• Bore size: 443 in. (11,252 mm)

• External diameter: 522 in. (13,259 mm)

• Face width: 40 in. (1,016 mm)

• Number of teeth: 344

• Tooth depth: 3.4 in. (86 mm)

• Tooth spacing tolerance: 0.0016 in. (0.04 mm).

For more than 100 years, Rexnord Falk Mill Products have provided high-quality solutions for a diversified range of industries. With a base of more than 5,000 installed ring gears and pinions, Rexnord Falk Mill Products provide solutions for some of the world’s most rugged applications in the mining, cement, automotive, construction, manufacturing, paper and power generation industries.

For more information, visit www.rexnord.com.