... O-Ring Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains: A series and B series4. Silent chains: ... Chains)7. Leaf chains: LH series8. Double pitch conveyor chains with attachments: 2040,2050,2060,20809. Nickel- ... 25NP,35NP,41NP,40NP,50NP10. Coupling chains The Chain technic treatment is as below:1.Shot peening2 ... Carburizing8.Quenching9.Tempering10.Oiling11.Greasing motorcycle chain roller chain