Tsubaki Guide to Forestry Products

DELIMBERLOGUNSCRAMBLERApplication: Log Unscrambler Savings: $55,700.00Tsubaki solution: Tsubaki 200HT was selected to replacean original design using standard chain,increasing the life from 1 to 13 months.It really mattered to this Tsubaki customerCOST SAVINGS!ChallengeImpact loads from harsh operating conditions are common with Delimber operations.Power-lockSprocketSplitSprocketSolutionDrive chain: Tsubaki standard premium grade chaincomplete with G7 feature of PerforMax lube-groovedbushings and ring coined connecting links.Typical size range for this applicationRS120-2 cott to RS140-2 cottSprockets: Premium Tsubaki sprockets with high carbon1030 or 1045 material allow for a consistent hardenedtooth that is a necessity for the demandsof this application.ChallengeLog diameter varies from mill to mill. Operating overload and jam-ups are common.Sand and grit conditions can lead to abrasion on mill chains.SolutionDrive chain: HT chain provides up to 30% greater ultimate tensilestrength over standard roller chain.Mill Chain: IBR (induction hardened barrels and rivets)for abrasive resistance.Typical size range for this applicationRS100HT to RS160HTWR82XHD, WR124(XHD), WR132(XHD)Sprockets: Remote access and the need for quick changeoutcan be solved by split design mill chain sprockets.RS 140-2 ChainForward/backward operation can result in keyway backlash. Theuse of Powerlock sprockets eliminates the need for a keyway.HT Chain92 93