Sigma Repair specializes in the service and repair of Hitachi Seiki CNC Machine Tools. 
Hitachi had many controls across their various models of Lathes, VMCs, HMCs Etc – both conversational (Multi) and standard (G-Code)

Seicos J  /J Multi – Yasnac J300 Based (can be with Conversational Multi – Referred to As Lambda 40L) – Yaskawa Drives & Servos
Seicos II & III  – Hitachi Brand of Control – G-Code based with NEC / Mitsubishi Drives & Servos
Micon 8/16II/16III – Hitachi Brand – used as the PC for Fanuc Based Controls (Fanuc 15M – most common on HMCs with APCs and pallet systems)
Sigma 10/16/18/21 – Fanuc based control with a Hitachi Front End – Based on Fanuc iT/iM Series control – Fanuc Drives & Servos
Lambda 10 – NEC Based control with Seicos Application – NEC PC9814 Based / DOS – NEC Servos & Drives

We have 1000s of parts in stock – and if we don’t have it we can find it through our vast network of other CNC techs across the country.
In addition to parts, we  can provide option parameters, software, NC parameters, service bulletins, books, wiring diagrams,  expanded memory (without hardware!), control backup & regeneration, SRAM & PCMCIA Control backup & support, hardware upgrades and much more!