Rolling Mill Gearbox Repair

A customer recently sent in a gearbox that is part of their rolling mill. The rolling mill uses a metal alloy to make engine bearings for large Diesel engines. This line on the mill brings in thicker material and rolls it out thinner to the desired thickness. Much like a rolling pin does with dough. The problem with the gearbox was when it was put under load it would vibrate like crazy. When the gearbox ran unloaded it ran smooth. It was found that the shaft was bent, and the gears were in bad shape. We worked with a quality manufacturer [...]

Rolling Mill Gearbox Repair2021-02-18T18:45:06+00:00

2000 HP Aluminum Plant DC Motors

An Aluminum Rolling and Recycling plant, a good Horner customer in Terre Haute brought Todd Cochran (Sales) a problem/ or opportunity to Indianapolis Field Service. The customer has two, 2,000 HP DC motors coupled together, to deliver 4,000 HP to their mill. These motors are about 5-6 foot square, and 10 feet long each. The inside motor, the one coupled between the mill and the second motor, failed and had to be replaced with a spare. This is not something they can shut down for a couple of days. Of course this happens when the Indianapolis Field Service group is working [...]

2000 HP Aluminum Plant DC Motors2021-01-08T23:55:43+00:00

Made In Japan, Rebuilt In The US

Everyone is well aware of the quality of Japanese autos in today’s market. In the 1980’s, the Japanese raised the quality bar in the automotive industry, resulting in cars that were of a higher quality and remained in service for many more miles than most of the domestic autos of that time. This off-shore challenge resulted in the upgrade of quality for all American automakers, just to remain in business. This quality concept also applies to the motor repair business and is why our company has Quality Manager like Vernon Pratt, to help us keep quality at the forefront of our [...]

Made In Japan, Rebuilt In The US2020-03-12T15:46:06+00:00

1500 HP Aggregate Mill Motor

A large aggregate company in Southern Indiana that Horner Industrial has serviced for years contacted Horner as they had a 1,500 HP 180 rpm Open Frame AC Wound Rotor/Synchronous motor that needed to be removed, rewound, and reinstalled. This motor was manufactured in the 1950’s and it was one heavy piece of iron. (42,000lbs) Once it was removed, transporting it posed a challenge to Horner’s Logistics Department as it had to be transported on a special “low-boy” semi-trailer due to its size. We had to make sure that it would pass under all the overpasses on I-65 from Louisville to Indianapolis. [...]

1500 HP Aggregate Mill Motor2019-09-10T16:00:16+00:00

Loose Motor Bases: Motor Vibration (A Simple Solution)

When analyzing motors, it is easy to read more into a problem than actually exists. This case history illustrates the need to always look for the simple solution first. While at a power plant working on a large fan, the vibration analyst requested that a large mill motor be examined. The motor had been sent out to motor shops twice. In each instance, the vibration remained high when the motor was put back into operation. Attempts were made to field balance the motor, however, they were unsuccessful. The motor continued to have amplitudes of 8 mils of vibration, all of which [...]

Loose Motor Bases: Motor Vibration (A Simple Solution)2019-09-09T18:02:12+00:00

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