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Precision Grinding for Marine and Rigging Hardware

Saltwater and load. Those two facts drive every decision on a marine part. Stainless is usually the answer to the first, and stainless does not grind like carbon steel. Surface finish is a corrosion variable here and not only a bearing variable, because a rougher surface holds more of exactly what you do not want it holding. Hardware that spends its life outdoors under tension is unforgiving of a part that was finished to a number somebody rounded up.

Parts with precision-ground and honed inside diameters, including sleeves, shafts, and a crankshaft bore
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Grinding for Marine and Rigging Hardware

Parts We Grind for This Market

  • Sheave pins, axles, and bushings
  • Winch and windlass shafts
  • Bearing and race surfaces
  • Shoulder bolts and threaded hardware
  • Rope access, fall protection, and rescue hardware

Why Our Equipment Fits

Finishes to 8 Ra across OD, ID, centerless, and honing. Pins and shafts run centerless from 0.125 to 4 inch at 0.0001 inch with roundness under 0.0001 inch, and infeed plunge handles shouldered parts that thru-feed cannot. Bushing bores hone to 0.0002 inch. CNC OD covers profile work, spheres, angles, and radii, to 6 inch diameter by 36 inch length.

Materials

300 series stainless, 17-4 PH and 15-5 PH, titanium, aluminum bronze, and hardened steel. Monel is the traditional answer for shafting and rigging in seawater and we grind it routinely, along with Inconel and Hastelloy where the environment is worse than usual. We quote these as what they are rather than as steel with a surcharge added after the fact.

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Related Capabilities

Shoulder bolt with centerless infeed-ground shoulder

Part type: Shoulder bolt – Centerless infeed plunge grinding

Industries: Marine and Rigging Hardware

Applications: Shoulder bolt ground by centerless infeed plunge.

Precision-ground steel shaft

Part type: Stainless shaft – OD grinding

Industries: Marine and Rigging Hardware

Applications: Precision ground stainless shaft.

Centerless in-feed grinding of a cylindrical part with coolant flowing

Part type: Shouldered part – Centerless infeed plunge grinding

Industries: Marine and Rigging Hardware

Applications: Centerless infeed plunge grinding of a shouldered part.

Ground stainless marine hardware, pins and shafts

Part type: Stainless hardware, pins and shafts – Precision grinding

Industries: Marine and Rigging Hardware

Applications: Ground stainless marine hardware, pins and shafts.

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