| Brief Description |
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According to Standards ISO, DIN, ASME, CSN, CZ
Roller chains are the most used chains in almost all transmissions. Other kinds of chains are derived for their special usage. Exactly defined clearances appear among all moveable parts that ensure correct service and flexibility of the chain. This clearance is used like a lubricant pocket because the lubricant is necessary for a long durability and it contributes to absorption of operation noise and to absorption of oscillation at the transformed performance. Turning roller in the chain helps to easy rolling on the tooth profile of the wheel and together with this to slight wearing of the chain and the sprocket. Double pitch roller chains correspond in design with roller chains including their main dimensions. Only the pitch of plates is doubled. Double pitch roller chains are mainly used in conveyors especially with extremely large axial distances. Furthermore, they are used in little loaded transmissions with a low circumferential speed and big sprockets. They have a half number of links for the same distance, that is why they also have lower wear, which is favourable at big axial distance. Lower weight against standard roller chains is an indispensable fact. Bush chains are derived in design from the roller chain but the roller is not used in this kind of chain. When the chain is moving over wheels, the bush is gliding over the tooth profile (it is not rolling like the roller), which contributes to higher wear than at roller chains. Bush chains are produced because of their larger joint area (bush + pin). It is reached by bigger diameter of pin and bush at keeping the same main dimensions of the chain. Stainless roller chains are chains that are made of stainless steel to be able to work in corrosion-aggressive environment and moreover usually without lubrication chemical, food-processing industry, etc. Dimensions correspond with roller chains, only their strength is lower see Tables. Roller and bush chains with straight plates indicated in the catalog by two stars ** Roller chain |
