Precision is what separates a part that drops in and runs from one that almost fits. For original equipment manufacturers, that difference is everything. A few thousandths of an inch in the wrong direction can mean misalignment, vibration, leaks, or premature wear, the kinds of failures that show up months later and cost far more than the part itself.

At Lindsay Machine Works, OEM precision machining is the core of what we do. Our Kansas City machine shop has been building tight-tolerance components for original equipment manufacturers for more than 30 years. With more than 80 machines in a 35,000 square foot facility, plus a climate-controlled inspection area, we have the equipment, the people, and the quality discipline to produce parts that meet your spec the first time and every time.

Why OEMs Choose Lindsay for Precision Work

Plenty of shops describe themselves as precision machine shops. The shops that actually deliver on that promise share a few characteristics. Here is how we approach it.

Tolerances we plan for, not hope for

Every job starts with a clear read of the print. Critical dimensions are flagged, fixturing is planned around them, and inspection plans are built before chips fly. We routinely hold tolerances down to a few thousandths of an inch on our 5-axis CNC machining centers, CNC turning centers, and grinders, and tighter when the print calls for it.

Multi-axis machining for complex parts

Complex OEM parts are not one-setup parts on a 3-axis mill. They have angled features, tight bores, undercuts, and finished surfaces on multiple sides. Our 5-axis and 4-axis CNC mills, plus 5-axis turning centers with live tooling and a sub spindle, let us produce complex parts in fewer setups. Fewer setups mean tighter tolerances and shorter lead times.

Grinding capability when finished matters

A part can be perfectly sized and still wear out early if its surface finish is wrong. Our surface grinding handles parts up to 17 by 24 inches, and we offer ID and OD cylindrical grinding for high-precision finishes on shafts, sleeves, bushings, and rollers. When a customer specifies a Ra value, we hit it.

Inspection that protects the spec

Every job moves through our climate-controlled inspection area. A Starrett AV350 vision and probe system, calibrated micrometers, digital height gauges, and traditional metrology measure each part against the print. First article inspection reports, in-process records, and material certifications are available when you need them.

Capabilities Behind Every Precision OEM Part

Precision machining rarely lives in isolation. OEM parts often combine several processes, and keeping them all under one roof tightens quality control. Here is what our shop floor brings to the work:

5-axis CNC milling Vertical milling centers up to 32 inches by 120 inches for complex housings, brackets, manifolds, and angled features.

4-axis CNC milling Rotary capability for multi-side parts and fixtures.

5-axis CNC turning Live tooling and sub spindle, up to 26 inches OD by 80 inches long, for one-setup turned and milled parts.

Manual machining for large work Bridgeport-type mills, a radial drill, and a horizontal boring mill with CNC retrofit. Engine lathes up to 39 inches OD by 240 inches long, plus a vertical turning lathe up to 57 inches OD for large rotating parts.

Surface grinding Up to 17 by 24 inches for flat precision finishes.

ID and OD grinding Cylindrical work for bushings, sleeves, shafts, and rollers.

Specialty operations Gundrilling up to 1 inch OD by 40 inches deep for hydraulic bodies, manifolds, and long bored parts. Welding, fabrication, and finishing are also available in-house when precision parts need to be assembled or finished as part of a larger component.

Materials We Machine to Tolerance

Precision is about more than dimensions. The material has to behave the way the engineer expected. We work in:

• Carbon, alloy, and tool steels
• Stainless steel
• Aluminum
• Bronze and brass
• Titanium
• Engineering plastics

Material can be supplied by you for the tightest supply chain control, or sourced through us for a single point of contact. Material certifications stay on file either way.