John Ramming Machine has the experience (Since 1876), the Staff and On-Site Capacity to Machine Complicated Workpieces ...All Sizes and Shapes! "Original John Ramming Business Card From 1876"  John Ramming Machine Company has been a 1st Tier Caterpillar supplier for over 50 years. We have one Caterpillar Six Sigma trained Black Belt. We are an ISO 9001:2000 certified shop.