Shapes to your engineering specifications.

Featured Product from Grob, Inc.

Shapes to your engineering specifications.-Image

Have It Your Way
Grob, Inc. is currently tooled to roll more than 2,100 different shapes from a wide variety of materials including mild and medium carbon steels, stainless steels and aluminum. Bar stock lengths with a rolled outside diameter of up to 6″ inches may be rolled. (No helical or skip tooth configurations.)

Timing pulleys, standard spur gears, involute splines, straight-sided splines, ball splines, gerotor and ratchets are all typical Grob-rolled products.

Need to Roll a Unique Shape?
Grob will economically custom tool to your specifications and provide a sample for your approval. Whether you need material rolled end to end, just on an end or on a blank Grob Rolling may very well be the best process for your needs.

“Well-Rounded” Capabilities
From 48 pitch Pinion Wire to Gerotor to 6″ dia. Pulleys, Grob, Inc. can produce a product to fit any of your special requirements. Send us your tubing or formed sheet metal drums, Grob is equipped to roll forms for surface enhancement, fluting, and spline shapes to your engineering specifications.

Cold Rolled Products

  • Spline Shaft
  • Timing Pulleys
  • Sleeve Bushings
  • Spur Gear



  • Broaching
  • Splines & Shapes
  • Spur Gears
  • Heat Exchanger Tubes & Drums
  • Tools


About Grob:
Founded in 1929 as "Grob Brothers," Ben and Ted Grob made their mark in the industrial saw and filing machine industry. Working their way through the Great Depression in a 20 x 20 foot garage, these two young engineers designed and built some of the most dependable and affordable vertical band saws and continuous filing machines ever made.

Although the company was successful, in 1951 the brothers parted business ways to explore separate ventures. Ben, staying in the band saw industry, went on to form "Grob, Incorporated." At that time, he also had an idea for a new process of cold forming gear and spline-like forms on accurately ground bars.

This revolutionary method-known to many in the industry as "Grob Rolling" - was ahead of its time in the 1950s and is still the best today. In fact, Grob Rolling has not only changed the foundation of the company, but has also changed the thinking of many end-users looking for a better way to produce stronger and more economical parts.

Unlike "hobbing" where material is removed by cutting the Grob process of cold roll forming displaces raw material to form the desired shape with virtually no waste. The process increases strength, durability, and produces and extremely high surface finish.

Still family owned and operated, today Grob, Inc. employs more than 50 technicians and engineers at a 100,000 square foot manufacturing facility located in Grafton, Wisconsin.