Engis SPM Series Single-Pass Bore Finishing

Originally titled 'Single-Pass Bore Finishing a Cost-Effective Choice'

Engis single‐pass, superabrasive bore finishing systems are the more cost‐effective choice—over conventional honing—for virtually any bore finishing application and workpiece material.

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Engis single‐pass, superabrasive bore finishing systems are the more cost‐effective choice—over conventional honing—for virtually any bore finishing application and workpiece material.

Utilizing the single‐pass process, extremely tight tolerances can be held reliably and consistently in your production environment, at a lower overall cost per finished piece. Additionally, Engis diamond plated bore finishing tools ensure high quality by achieving – in standard and semi‐blind bores – geometries to within one half of a micron (0.000020”), bringing precise accuracy to your finished part.

Single‐pass bore finishing benefits include reduced labor costs through automated systems, lower cost per hole through long tool life; predictable, consistent results; Improved bore quality; fewer rejects; less frequent part inspection; shorter cycle times; higher production rates; SPC values >2.0 Cpk.

The SPM series is a standard line of machines designed to meet the needs of job shops for small to medium size parts. Available in four, six, eight and 10 spindle models, these systems are primarily for parts up to 51-mm (2”) diameter.