This roller used in big chains pitch up to 25.4mm, we can supply different material grade, and do heat treatment as well.Product nameRollerApplicationIndustrial chain drive chain special chainMaterialAlloy steelMaterial gradeSAE8620 SCM420 C1018 20CrMnMo 20Mn 40Cr A3Heat treatmentAvailableDimensionAccording to your drawingPackagePlywood caseSampleAvailableMOQ300KGS~500KGSLead time30 DaysFOB portNingbo or ShanghaiFAQQ:Can you produce parts according to our drawing?A:Yes.Q:May I start with a sample or a small quantity order to test it?A:We prefer to getting our parts tested before mass production.Q:Can you do heat treatment for parts?A:Yes.Q:What's your payment terms?A:We accept T/T.
http://www.jhchainpart.com/big-chain-parts/32b-chain-roller.html