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Custom Blanchard Grinding Services

Accurate Metals specializes in custom Blanchard grinding services for various industries. Blanchard grinding is a cost-effective, highly precise method of removing substantial material from extensive surface areas. Our in-house Blanchard grinders allow us to handle low to high-volume production of parts up to 84 in. corner-to-corner and up to 10,000 lbs. in weight.


Blanchard Grinding

Automation Capabilities

CNC Controlled

Material - Metals

Stainless Steel
Low Alloy Steel

Alloy Steel

Part Length

Up to 84″ corner to corner

Part Width

Up to 84″ corner to corner

Part Weight

Up to 10,000 lbs.

Flat / Parallel

± .005″, Tighter Tolerances obtainable

Perpendicularity / Squareness

± .005″, Tighter Tolerances obtainable


± .005″, Tighter Tolerances obtainable

Surface Finish

Up to 63
125 (Standard)

Lifting Capacity

5 ton

Additional Services

Bar Coding
*Free Delivery (150 mile Radius of Milwaukee or Rockford)

Production Volume

Low to High Volume

Lead time

Inquire for current lead times

Additional Information

Industry Focus

Agriculture, Automation / Production Equipment,
Construction, Mining, Nuclear, Material Handling,
Municipal/ Government, Power Generation, Rail, Wind

Intended Application

Armor Plating

Heavy Duty Vehicle
OEM Components

Industry Standards


File Formats


Request a Quote


As one of the oldest forms of mechanical grinding developed in the 1900s, Blanchard grinding has evolved into the most reliable surface grinding technique for low- or high-volume projects involving objects with large surface areas. It can remove material faster than other precision grinding methods.

Keeping up with the trends allowed us to employ advanced equipment and innovative Blanchard grinding techniques to achieve superior outcomes based on your specifications and requirements. Regardless of your project’s complexity, you can trust us to deliver outstanding results that will satisfy your rigorous requirements.

Examples of Our Work

Custom Blanchard & Surface Grinding Capabilities

AMP offers highly precise Blanchard grinding services tailored to diverse applications. We cater to industries ranging from mining to nuclear power and produce customized products through Blanchard grinding, such as OEM components, heavy-duty vehicle parts, armor plating, and more.

Our experienced team works to tolerances of ±.005 in. for flat or parallel measurements, perpendicularity, or other dimensions, with the possibility of achieving even tighter tolerances. With Blanchard grinding, we can provide surface finishes of up to 63 or a standard finish of 125 RMS.

Our Blanchard grinding process employs CNC-controlled automation, accommodating a range of metals, including:

  • Steel
  • Stainless steel
  • Low alloy steel
  • Alloy steel
  • Castings
  • Other metals

Apart from Blanchard grinding, our services include cleaning, packaging, barcoding, and free delivery within a 150-mile radius of our Milwaukee or Rockford facilities.

Understanding Blanchard Grinding

First developed by the Blanchard Machine Company of Cambridge, MA, in the early 20th century, Blanchard grinding, also known as rotary surface grinding, is a globally acknowledged method for finishing flat surfaces. It employs a cylindrical grinding wheel and vertical grinding spindle for precise and accurate material removal.

While Blanchard grinding is ideal for large surface areas and high-volume projects, precision grinding techniques are better suited for smaller objects and more complex surface requirements. All precision grinding techniques aim to create ultra-smooth surfaces without leaving patterns or bumps.


The versatility of Blanchard grinding meant that it can be used to grind a wide range of materials for various demanding industries, such as automotive, aerospace, manufacturing, and more. These materials include:

  • Ferrous metals
  • Non-ferrous metals
  • Certain plastics

That said, Blanchard grinding is suitable for applications that require flat and parallel surfaces, such as:

  • Machine bases
  • Castings
  • Forgings
  • Stampings
  • Rotary tables
  • Die blocks

Get in Touch for Your Blanchard Grinding Needs

For projects demanding precise removal of material from large surface areas, Blanchard grinding offers a cost-effective solution. AMP provides expertly crafted components with quick turnaround times and delivers free of charge within 150 miles of our Rockland, Illinois, or Milwaukee, Wisconsin locations.

With over 25 years of delivering high-quality custom metal fabrication and Blanchard grinding services to the Midwest, we are ready to meet your project’s unique needs. Contact us or request a quote to get started.