1-Rexnord Pin & Bush

SimpleMaintenance FreePower Transmission....Rexnord Pin & Bush

Position StatementRexnord Pin & Bush•Simplest and cost effective maintenance free couplingavailable to users and manufacturers of rotationequipment in the torque range from 2000 to 270 000Nm.

Product OverviewElastomer BushElastomer Bush Series• Close Coupled Design• Symmetrical design• x Sizes• 2000…270 000Nm• Up to 350mm Bore• Finish bores

Components- HubHUB• Material GRS 250• Symmetrical coupling design• Long hubPins• Material ground steel• Homogeny design.• Yellow zinc plated components• Secured with spring clip

Components- ElementRubber bush• A scalloped barrel shape of the bushes guaranteesa uniform distribution of loads, even in case ofmisalignment, thus limiting the bending moment resultingfrom the radial force on the pins.• Bushes are composed of aNBR element containingnatural rubber• The hardness of the rubber element is 72°Shore A.• Their permissible ambient temperature rangesfrom -40°C to +100°C.• The coupling resonance factor VR is 3.3Material properties• Hardness• Hardness change (100 C x 72h)• Elongation at brake• Compression set (100 C x 72h x 20%)• Oil Resistance (100 C x 70h)• 72 SHA• 9 SHA• 303%• 28%• 30%

Dimensional dataSize Tnom n-max Dmin Dmax F S L M H KInertia mkgcm² kgE225B 2000 3200 40 90 225 130 264 145 4 25 0,127 47E250B 3560 3000 45 95 250 150 305 147 5 38 0,220 55E300B 5000 2500 50 110 300 180 365 182 5 38 0,541 85E350B 8100 2200 60 120 350 200 406 200 6 60 1,26 130E400B 11200 1800 70 140 400 220 446 232 6 60 2,28 190E450B 16200 1600 75 160 450 240 487 253 7 72 3,84 260E500B 21500 1400 75 180 500 260 527 288 7 72 6,17 350E550B 27700 1200 80 210 550 280 567 322 7 72 9,37 450E630B 57700 1000 130 250 630 280 567 375 7 90 19,0 710E680B 73000 900 150 270 680 280 567 405 7 90 26,8 980E800B 112300 760 180 280 800 300 607 420 7 90 47,1 1100E900B 153800 680 200 300 900 300 607 448 7 90 77,0 1250E1100B 270000 600 280 350 1100 400 807 550 7 100 204 2520

Coupling misalignment capability•Lines represent maximum limits of combined angular and parallel misalignment.Allowable misalignment is any point that falls within the triangular are under each line.1EndfloatAngular1ParallelE225B E250B E300B E350B E400B E450B E500B E550B E630B E680B E800B E900B E1100BE ∆ E 4 4 4 5,5 5,5 5,5 7 7 7 7 8,5 8,5 10,5∆ (b-a) 0,45 0,45 0,45 0,6 0,6 0,6 0,9 0,9 0,9 0,9 1,2 1,2 2,2∆ r 0,25 0,25 0,25 0,3 0,3 0,3 0,4 0,4 0,4 0,4 0,5 0,5 0,75

Rexnord Pin & Bush ApplicationsPulper• Paper Mills• Replaced gear couplingVertical Pumps• Replaced lubricated couplingConveyors• Main Chip Dump conveyor• Replaces lubricated couplingChain conveyor• Connection between gear and driveshaft

Pin & Bush Features and BenefitsFeature• Symmetrical and simple couplingdesignBenefit• Blind assembly possibility• Cost effective• Low inventory requirements• scalloped barrel shape Elastomerbushes• No Lubrication – no maintenance• Excellent wear and chemical resistance• guarantees a uniform distribution ofloads, even in case of misalignment• limiting the bending moment resultingfrom the radial force on the pins.• Flexible elements are loadedin compression• Fail safe design• High torque ratings• Capacity to withstand high overloads