uni-chains CHAIN CATALOG

uni 821-PRR4Special Chains • PlasticThe uni 821 PRR chain is double hinged withpressure reduction rollers. It has the straightrunning uni 821 chain as base chain.The chain is suitable for application whereaccumulation of long items occurs or for itemsthat should not be damaged by the accumulationpressure.Rollers with free rotation on their axles aremounted on the upper surface of the chain. Theaxles for the rollers is supplied in stainless steel.Compared to uni 821 PRR with ø5 mm(0.2 in.) axles the PRR4 reduces the noiselevel at higher speeds.MaterialsStraight running38.1 mm (1.50 in.)See page 14SS304 See page 13225 mm (8.9 in.)See page 107See page 116W I Q GSee page 1203.048 m = 10 ftNo. of links/box: 80POM: 3000 N (674 lbf)TRAVELAxle materials for ø4 mm (0.16 in.)accumulation rollers:SS304See page 13V L TEPHmmin.mmin.E6.40.25L22.20.87G140.05.51P38.11.50H9.50.37Q 136.5 5.37I (K750)174.56.87T 19.0 0.75I (K1000)238.09.37V 28.5 1.12I (K1200)288.811.37- - -All dimensions are for POM-chains.Items with bolded uni reference numbers are standard.Items with uni reference numbers in italic are available on a made-to-order basis.uni reference no.POM-LFmmwidth Wuni 821-PRR4-K750 32LFPRRK0750SS4 190.5 7.50in.kg/ mweightlb/ ft6.9 4.64uni 821-PRR4-K1000 32LFPRRK1000SS4 254.0 10.00 8.8 5.91uni 821-PRR4-K1200 32LFPRRK1200SS4 304.8 12.00 10.2 6.8546