(1) Crowned tooth allowed larger tolerance in shafts and higher loads. (2) Special hardening treatment W/high strength and anti-abrasiveness. (3) Closed type coupling--easy lubricate & anti dus...
(1) NO-LUBRICATION REQUIRED： No lubricants are needed and no noises or wear and tear produced because there is no sliding or friction. (2) MAINTENANCE-FREE： ”LEAVE IT FOR GOOD AFTER INSTALL...
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