Servicing absolutely free chains using sintered alloy bushings
Sintered bushing roller chain is maintenance-free chain suitable to a spot wherever lubrication is tricky. It utilizes bushings manufactured of a sintered alloy which impregnates lubricating oil.
For your use that necessitates clean physical appearance, rustless style (URN) is accessible.
Encouraged uses
?Conditions wherever lubrication is tricky or elongation of chain frequently occurs Remarks for use.
?Never use this chain in dusty environments. In this kind of environments, use O-ring chains.
?This chain is for your use under light or medium load.Use O-ring chain when a huge effect is applied to a chain.
?Set the chain feeding pace at 150m/min. or lower.
Choice of chains
As for sintered bushing roller chains, the inner plates are thicker plus the pins are longer than individuals of regular roller chains in order to compensate for that strength lowered from the utilization of sintered bushings.
For choosing a suitable chain, refer to “Selection of Chains”. Use the tables of maximum kilowatt ratings for sintered bushing roller chains that cover low speed ranges.
For sintered bushing roller chains, “Low-speed selection” 
are not able to be applied because the “Maximum allowable load” while in the dimension table considers only the chain tensile stress and neglects the bushing power.
Connecting links and offset links
For sintered bushing roller chain, R connecting links are used for DID60 or smaller sized, and C connecting back links for DID80 or greater.
OJ could be used as offset links. Please location an order the connecting links and offset hyperlinks specifying the kind for sintered bushing roller chain.
During the tables of maximum kilowatt ratings, the power with the connecting hyperlinks and offset hyperlinks are taken into consideration.
Sprockets
Regular sprockets might be utilized for sintered bushing roller chains.
