Precision Ground Bar Chicago for Steel Bar Stock and Centerless Grinding Services

High-quality precision-ground steel bars since 1970, tight tolerances, and nationwide shipping.

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We Take Pride In Providing High-Quality Steel Bars Since 1970.

Precision Ground Bars
8150 W 111th St Ste 14, Palos Hills, IL 60465

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[Welcome]

Precision Ground Bar Stock Serving Industrial Manufacturers Since 1970

Precision Ground Bars is a trusted precision ground bar supplier in Chicago, serving the aerospace, automotive, medical, and industrial manufacturing sectors since 1970. We provide precision ground bar stock and centerless grinding services that deliver tight tolerances, consistent diameters, and superior surface finishes across every material grade.

Our Chicago, IL facility supplies stainless steel bars, alloy steel bars, carbon steel bars, aluminum round bars, nickel alloys, titanium, brass, copper, and bronze in a wide range of diameters, lengths, and specifications. Every order is processed for dimensional accuracy, material consistency, and dependable delivery to keep your production moving.
[Industries]

Centerless Grinding Services Chicago for These Operations and More

We provide Centerless Grinding Services Chicago manufacturers rely on to produce precision ground bar stock with tight tolerances, consistent diameters, and superior surface finishes for demanding industrial applications.

Bearing Shaft Quality

Pump Shaft Quality Bar

We supply pump shaft quality bars for pump, motor, and fluid power applications. Every precision ground bar is finished to precise diameter tolerances and straightness requirements, delivering a minimum 100 KSI tensile strength and 75 KSI yield strength for dependable performance.

Grinding Services

Medical Stainless Steel Bar

We supply medical stainless steel bars in 304, 316, 317, and 2205 duplex grades for surgical instruments, dental implants, and biomedical devices. Every precision ground bar is manufactured to tight tolerances with smooth surface finishes for precision machining.

Alloy Steel Bar Supplier

Our alloy steel bars include 4130, 4140/4142, 41L42, 8620, and 86L20 grades for aerospace, automotive, and heavy industrial applications. These alloy steel bars provide high strength, hardenability, and wear resistance for components operating under demanding loads.

Round Bar

Carbon Steel Bar Stock

Our carbon steel bar stock includes 1018, 1045, 1117, 1144, 1215, 12L14, and 11L17 grades, available as precision ground bar stock ready for production. Carbon steel bars provide excellent machinability, dimensional consistency, and cost-effective performance for general manufacturing, CNC machining, and screw machine applications.

A286 Round Bar

Automotive Steel Bars

We supply automotive steel bars in alloy steel and aluminum grades for automotive manufacturing, heavy-duty trucks, and performance vehicles. Our precision ground bars are used in engine components, gears, axles, and other precision-machined parts, delivering high strength, lightweight performance, and tight dimensional tolerances.

[Why Us]

Reasons to Choose a Trusted Precision Ground Bar Supplier

Precision ground bar stock is manufactured to consistent diameters, tight tolerances, and superior surface finishes, making it ideal for aerospace, automotive, industrial, and medical applications. As a trusted precision ground bar supplier since 1970, we deliver stainless steel round bars, carbon steel bars, alloy steel bars, and specialty metal bars that manufacturers rely on for consistent machining and dependable performance.

Increased Load Capacity

Reduced Weight

Increased Strength

Increased Fatigue Life

INDUSTRIES WE SERVEPRODUCTSSERVICESSOME OF THE MATERIALS WE PROCESS AND SUPPLY
Aerospace ProductsAccuracy StockBar Chamfering4101117
Automobile PartsAero Space MetalsBar Grinding4201144
Electronic ComponentsAir Craft QualityBar Grinding & Polishing4301018
Fabricated Metal ManufacturingAlloy Round BarsBar Press Straightening4551045
Fluid Power Pump and Motor ManufacturingAluminum Steel BarsBar Stock Cutting13-8114 Stressproof
Hardware & Fastener ManufacturingBearing Shaft Quality BarsBar Straightening15-5 PH1215
Machine Tools and RepairsBrass Round BarsCenterless Grinding17-4 PH12L14
Machinery ManufacturingChrome Plated BarsChrome Plating303 Stainless SteelFatigueproof
Medical Equipment and SuppliesCold Finish BarsCustom Packaging304/304L2011 T3
Medical Service CentersCopper AlloysGrinding Thin Wall tubing316/316L2024
Screw Machine ShopsHeat Treated BarsGround Steel4167075
Bearing Manufacturers CompanyInconel BarsPrecision Bar Grinding4404130
Bearing Components ManufacturersMedical Grades barsRound Precision MetalsDuplex4340
Swiss Machines PartsNickel Alloy BarsOD GrindingInconel-6258620
Medical Grade Stainless Steel ManufacturerPrecision Ground Bar StockRoll StraighteningInconel-X7504140/4142
Air Cylinder ManufacturersPump Shaft QualitySteel DeliveryMonel-40041L42
Hydraulic Cylinder ManufacturersStainless Steel BarsPrecision Centerless GrindingNitronic-6086L20
Dental Implants Manufacturing CompaniesStainless Steel TubePrecision Straightening145-Tellurium CopperA286
Steel MillsTitanium – Exotic AlloysCenterless Grinding Services360-Brass11L17
Service CentersTubing ProductsOD Grinding642-Almu-Bronze2024 T351
Chrome Plating HousesTurned Ground & PolishedTube Centerless GrindingCopper Alloy 1106061 T6511
[Uses]​

Pump Shaft Quality Bar and Precision Ground Round Bar Uses

Precision ground round bars are widely used in gears, bearings, ball bearings, and machine screws, supporting automotive, aerospace, and metal fabrication applications. We stock medical-grade stainless steel bars in 304, 316, 317, and 2205 duplex for surgical instruments, dental implants, and biomedical devices, where corrosion resistance and sterilization compatibility are essential.

Tool steel bar stock in O1, A2, D2, and M2 grades is used for cutting tools, dies, and molds, providing excellent hardness and wear resistance. Our pump shaft quality bars are precision ground to a minimum 100 KSI tensile strength, 75 KSI yield strength, and tight dimensional tolerances to ensure reliable performance in demanding production environments.

[Products]

Ground Bar Machining for All Major Grades and Materials

Our ground bar machining capabilities support precision ground bar stock across stainless steel, carbon steel, alloy steel, tool steel, and specialty alloys. We process 303, 304/304L, 316/316L, 410, 416, 420, 430, 440, 455, 13-8, 15-5 PH, 17-4 PH, Nitronic 60, Duplex, and A286, along with 1018, 1045, 1117, 1144, 1144 Stressproof, 1215, 12L14, and 11L17 carbon steel grades.

We also stock 4130, 4140/4142, 41L42, 8620, 86L20, Inconel 625, Monel 400, 360 Brass, 642 Bronze, Copper Alloy 110, and 145 Tellurium Copper. Every material is processed through our centerless grinding and bar processing operations to achieve tight tolerances, consistent diameters, and production-ready performance.

  • Stainless Steel Round Bar
  • Carbon Steel Bar Stock
  • Alloy Steel Bar
  • Tool Steel Bar Stock
  • Aerospace Steel Bar
  • Medical Stainless Steel Bar