Link plates cropped from high carbon cold drawn steel

To avoid internal stresses associated with guillotined steel, Challenge produces all plates from high tolerance, on size, cold drawn steel bars resulting in a plate better able to withstand fatigue and shock loads.

Bushes with location shoulders and interference fit

For precise assembly; control of inner width and prevention of bush rotation. Bush shoulder length extended to form clearance between inner and outer plates and provide uniform lubrication; increased strength and life. This reduces the possibility of chain seizure.

Optional Stainless Steel or Nitride treated liner bushes

Hardened Rollers with grinding

Grinding the outer diameter gives excellent wear resistance and good load carrying qualities plus reduced wear on sprockets and a better visual result.

Pins with location shoulders and interference fit

Precise positioning of outer plates adds to strength whilst ensuring accuracy of attachment positioning.

Alloy Steel Seamless Tube used for all Hollow Pins

For wear and shock resistance. Spin Riveted (not coned) for stronger rivet and reduced pin-end stress.

Spin Riveted Induction Hardened Pins in Alloy Steel

For optimum life and the strongest rivet in any standard chain.

Shot Peened to produce a strong surface and reduce fatigue

Challenge has invested heavily in CNC controlled machinery for optimum batch component conformity. Attachment plates jig assembled maintains position and squareness.