We’ve been pretty busy lately with a lot of large motor & fan repairs in our engineering workshop. In the picture you can see a large 132kw industrial centrifugal fan unit that we repaired and rebuilt along with a 287kw ABB DC motor repair and a new 355kw AC motor which we supplied for a large press application.
The fan unit was rebuilt with a full motor overhaul, winding Baker test, re-insulation and new bearings. The secondary fan drive shaft component had new bearings fitted and the main support housing was machined and sleeved on the worn journals. The impeller was dynamically balanced and the complete unit rebuilt and all components laser aligned. Both of these processes were carried out using our high quality CEMB Hofmann equipment. Upon assembly the unit was run tested and checked that all vibration levels were within acceptable tolerance limits.
The DC motor underwent a full degreasing cycle and then all components were stoved to remove any residual moisture. The field, interpole and armature windings were fully Baker tested and re-impregnated with anti-tracking varnish. The armature was dynamically balanced and new bearings were fitted. Both bearing housings were worn so we machined and sleeved these back to the correct size before assembly. The commutator was then machined, undercut and polished to remove all wear from the brush track and ensure good commutation. Finally the brushgear was overhauled with new carbon brushes fitted. The motor was then assembled, run tested and painted.
The new 355kw AC motor was a special build from the manufacturer as it was a 6 pole 1000rpm machine and it will be mounted vertically shaft down on top of a large press. This is part of an ongoing project for a machine upgrade.
2 large motor & fan repairs that we carried out recently along with a large new motor. All part of our standard high quality service that extends to site engineer support for pumps and fans and also our dedicated sales team for all new and replacement equipment.
Call us on 0121 526 5070 for all your rotating electrical equipment.