Precision Surface and Blanchard Grinding Since 1948

100+ Years Experience

Blanchard Grinders up to 128" Swing

Specialty Surface Finishes

Quick Turnaround & Delivery

Blanchard Grinding

Blanchard grinding that delivers fast material removal and uniform results, with the capacity to handle large parts efficiently and accurately.

Surface Grinding

Surface grinding that offers tight tolerances and a smooth finish, machined by skilled operators and
reliable turnaround times.

Equipment Capabilities

Our Machines

Rotary Grinding

12x Mattison & Blanchard rotary grinders
42”, 48”, 54” and 60” gear-drive and high-column machines
Capable of grinding up to 36” height above table
.0001” resolution scales with variable speed retrofitted to many of the tables and spindles
Tolerances of .0005” flat and parallel are possible across entire range of sizes

Large Blanchard Grinding

84″, 96″, & 100″ gear-drive and high-column machines
Can swing parts a maximum of 128″ in diameter
Capable of grinding up to 65″ height above table
Hand scraped and aligned table and column ways for maximum accuracy
Tolerances exceeding .001″ flat and parallel are possible up to the maximum swing envelope

Mattison 400S Plate Grinder

36” x 240” magnetic table with a 42” 250HP grinding chuck
Maximum part profile is 42”wide x 252”long x 24” high, and up to 15,000 lbs.
Excellent for significant stock removal while still maintaining better than .003” accuracy

Surface Grinding

Two dozen surface grinders ranging in size from 12” x 24” up to 36” x 168”
Maximum part profile is 40” wide x 174” long x 35” high, and up to 10,000 lbs.
Capable of tolerances exceeding .0001” flat and parallel
Able to grind compound angles, vee ways, dovetails, and most linear geometry

OD Grinding

Landis and Toyoda OD grinders up to 24” swing, 144” long
CNC controls for multiple diameters in a single-setup
Capable of compound tapers and multiple angles, depending on geometry

CNC Milling/Turning

Multiple 3-axis 50-taper vertical CNC milling centers, up to a 60” x 30” x 26” X/Y/Z work envelope
Live tool lathes, with a 35” maximum swing and 56” maximum length
Standard tolerances of +/-.001”
Emphasis on milling and turning hardened alloy/tool/high-speed steels
Experience with exotic/nickel-alloy machining

Large Format CNC/5-Axis Milling

Okuma Double-Column Bridge mill with a 160” x 74” x 48” X/Y/Z work envelope
5-degree auto-indexing head for complex 5-side machining in a single setup
Soraluce 5-Axis horizontal ram mill with a 137” x 51” x 62” X/Y/Z work envelope
Capable of full-simultaneous 5-axis contour milling
Equipped with 66” table (90” swing) VTL vertical turning/milling table

Industries We Serve

Contract Manufacturing

Heavy Equipment

Paper / Converting

Recycling

Steel / Aluminum

Tool & Die

About Us

Midwest Grinding was established as a local Milwaukee contract grinding shop dedicated to precision Blanchard and specialty surface grinding small to extra-large components. Over the years, Midwest Grinding has enjoyed a reputation as problem solvers, fine tolerance grinders, and specialty surface finish providers.