Bush chains are produced in accordance with ČSN 02 3301 and in dimensions according to ČSN 02 3329. Our Rotary Vane Vacuum Pump manufacturing program also includes nonstandard bush chains produced according to your internal documentation.
A bush chain is quite like the roller chain. Nevertheless, it does not have friction – reducing rollers and is definitely thus appropriate rather for lower traveling speeds. The permitted regular movement speeds of the slow-running bush chains range from 0.3 m/sec to at least one 1.2 m/sec, with a maximum of 3.0 m/sec. Bush chains are most frequently used in applications requiring continuous procedure under coarse working conditions as well as procedure in 
warm and humid environment where the usage of belt drives will be inappropriate.