The standard, set against the print.
Chicago Precision Honing covers Illinois, Wisconsin & Indiana for precision honing. Bore tolerance is held to ± 0.0002", surface finish is targeted to the application, and process records are retained against the work order. No part leaves without dimensional verification.
The remit
Honing is the finishing operation that decides whether a bore seals, holds pressure, and runs for a million cycles — or fails on a test bench. Honing across Illinois, Wisconsin & Indiana spans the full spectrum: rough-to-finish, plateau, single-pass, multi-stroke, deep-hole, and long-stroke tube work.
Every part is honed against the print across the region. Bore tolerance is held to ± 0.0002"; surface finish is targeted to the application — engine, hydraulic, pump, or aerospace — and process records are retained against the work order.
Tolerances and finish targets
Bore tolerance is held to ± 0.0002". Surface finish is targeted to the application: engine bores carry plateau cross-hatch profiles, hydraulic barrels carry low-Ra finishes for seal life, and OCTG tubing carries long-stroke depth-to-diameter extremes. Cross-hatch angle, Ra, and Wt are set against the print, not assumed.
Bore tolerance
± 0.0002" diametral, held by single-pass diamond tooling or multi-stroke abrasive sticks per part class.
Surface finish
Ra 4 – 32 µin depending on application. Plateau finish profiles for engine bores; low-Ra mirror finish for hydraulic seal surfaces.
Stroke range
0.5" through 240" — horizontal and vertical machine families across the region, including multi-meter long-stroke configurations for OCTG and gun-barrel work.
Process records
Dimensional verification is retained against the work order. No part leaves without measured bore dimensions on file.
Sectors served
Submit a quote.
Submit the part type, bore dimension, tolerance band, surface finish target, and quantity. A fixed itemized quote is returned within 24 hours. No ranges, no estimates.