Shaft & Journal Machining

Shaft & Journal Machining & Repair

Our expertise in shaft journal and journal repair has earned In-Situ Machining Solutions a global reputation. We specialise in onsite machining for repairs to rotating equipment, including main bearing journals, fan shafts, alternator shafts, and more.

Journal Repair

Rotating equipment can suffer damage from oil starvation and major seizures. We deploy purpose-built orbital equipment and onsite machining techniques to provide high-quality onsite journal repair services worldwide. Our highly trained and experienced engineers excel in journal turning, grinding, superfinishing, and polishing.

Advantages of Onsite Journal Repair

By utilising our specialist teams and in-house developed systems, we eliminate the need to remove the rotating component from its housing casing or stator for repairs to the main bearing journal or separate bearing/journal surfaces. In addition to renowned diesel engine crankshaft repairs, we offer onsite refurbishment of large damaged rotating components, including shaft journals, to OEM standards.

Journal Machining Process

Machining

A specially manufactured machine is utilised to machine the Journal to remove any damage or wear and restore OEM specified tolerances to the diameter, radii and any seal/wiper areas

Superfinishing

A process in which a specialist piece of equipment holding a carborundum stone oscillates from side to side around 30 times a second to flatten off the surface of the Journal after the machining process

Polishing

Machine polishing process is the final process to ensure flatness and other geometric tolerances are maintained whilst producing the OEM specified surface finish.

Additional Journal Repair Services

Journal Turning

Most shaft journals cannot be rotated during the journal machining process due to a lack of lube oil or debris ingress. In these cases, we employ our orbital machining technology. However, if the shaft is available to rotate and space allows, we offer a conventional journal turning service. Our expertise includes designing and manufacturing specialist fixtures and variable speed-bearing gears to facilitate this service.

Heat treatment

We can undertake annealing of journals to reduce heat-induced hardness above OEM standards. Through resistance heat treatment, we apply controlled heating, soaking, and cooling with ceramic blankets to address this issue effectively.
If you require any of these services for machine maintenance, please use the enquiry form below to contact our team today. We are ready to assist you and answer any questions about our onsite machining capabilities.

Relatable Industries

We at In-Situ, are proud of our services, supporting a broad range of industries and providing vital on-site machining needs for our clients 24/7. Below is a range of the various sectors of industry that our services are utilised.