Cam Welding


The cam welding process is done when the camshaft is damaged too extensively to remanufacture. We use a state-of-the-art induction hardener. The purpose of this technology is to heat the “base material” to a high temperature. This creates the ideal conditions for perfect cam welding when adding material.

  • Adding materials to regrind to specifications
  • Using the correct technology for bonding
  • Created ability to remanufacture

When a remanufacturer performs cam welding a camshaft in the rebuild process, they are adding more material to the camshaft to fill in the areas of wear. After cam welding, they will grind it down, so it meets proper specifications. The material used to build up a camshaft during cam welding is usually harder than the material the camshaft is made of, so there shouldn’t be any fear of the cam welding not holding up.

Camshaft Lobe


The camshaft lobe determines the amount of opening for the valve. The camshaft lobe also determines the ramp of the opening and closing of the valve. The camshaft lobe creates the air/fuel mixture. A camshaft lobe can be resurfaced and repaired when proper welding material is added.

  • Build up material
  • Proper hardening to maintain shape after re-grinding
  • Ability to resurface

By building up the material through welding we are able to regrind the camshaft lobe. At Delta Camshaft we can weld the camshaft lobe to recreate the specifications of your camshaft.

Cam Lobe


The terminology of the cam lobe can help you understand how it works.

  • Base Circle: The back side of the cam lobe. This is the area of the cam lobe where the valve is closed. It does not provide lift. Also known as the “heel.”
  • Clearance Ramp: The transition area between the ramp and the base circle. This part of the cam lobe takes up the lash in a solid valve train. Also called the “lash ramp.”
  • Opening Ramp: The side of the cam lobe that raises the lifter.
  • Lobe Centerline: The highest point of lift on the cam lobe. Centerlines are listed as degrees of crankshaft rotation. The intake centerline is After Top Dead Center (ATDC). The exhaust centerline is Before Top Dead Center (BTDC).
  • Nose: The top part of the cam lobe. This is where the valve is held open as it transitions from opening to closing.
  • Closing Ramp: The side of the cam lobe that lowers the lifter.
  • Ramps: These control the raising and lowering of the lifter (clearance, closing, and opening). Also called “flanks.”

Call for all your camshaft welding needs. Delta Camshaft (800) 562-5500.