Steel Rolling Tandem Mill Motor

A steel manufacturer sent in a steel rolling tandem mill motor after the armature equalizer insulation had failed to ground due to age and time of service. The bearings, bearing journals, and bearing housings were severely damaged. A team of different Horner Divisions came together to complete this project. Machining Services did an extensive amount of machine work on the shaft and bearing housing. They also turned and undercut the armature when the rewind was completed. Fan and Fabrication manufactured new bearing seal inserts. Horner Coatings sprayed and machined the shaft and bearing housings. They also did the welding of the [...]

Steel Rolling Tandem Mill Motor2022-05-16T11:59:45-04:00

Advanced Diagnostic Services and Preventative Maintenance

A major steel mill was looking to upgrade their maintenance practices thru predictive maintenance vibration analysis. There were several meetings with Brad Barton of Horner’s Electrical Mechanical Diagnostics Service (EMDS) group to identify equipment and understand their expectations. The EMDS reporting was covered in depth, a vibration collection route was laid out and frequency of reporting established. The machines identified ranged from 10,000 hp AC motors to smaller AC and DC motors in the range of 100hp up to 1250 hp as well as gearboxes. Horner’s field service group installed remote accelerometers on equipment deemed not safe for personnel to enter [...]

Advanced Diagnostic Services and Preventative Maintenance2022-01-26T23:19:34-05:00

DC Steel Mill Motors

The Horner Springfield division received a call from a steel mill customer, located in Columbus OH. They had a failure on a tandem pair of 850 HP DC motors on their rolling mill operation. Horner Industrial Springfield division had previously rebuilt their spare DC tandem mill motor set, including rewinding one of the armatures. Springfield field service techs removed the failed motors and installed the stored rebuilt motors, at the customer’s site. We also contracted with our local rigger to remove the 16,000 lb. motors and deliver them to our shop. There are still a lot of DC motors in operation [...]

DC Steel Mill Motors2022-01-26T22:35:54-05:00

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