9 MULTIPLE PUMPS Size P Q Weight R S Weight T Weight N L Weight mm mm kg mm mm kg mm kg mm mm kg Shaft end section Rearsection 2nd & 3rdsection A1-section 060 - 6,2cc 77,6 44,0 3,1 73,4 25,6 2,7 59,1 1,8 75,1 41,5 2,7 080 - 8,3cc 80,0 45,5 3,2 76,4 27,0 2,8 62,1 1,9 78,1 41,5 2,7 110 - 11,3cc 85,0 47,7 3,4 80,8 29,2 3,0 66,5 2,1 82,5 45,2 3,0 140 - 14,5cc 89,5 50,0 3,5 85,2 31,5 3,1 71,0 2,2 87,0 47,5 3,1 160 - 16,5cc 92,4 51,4 3,6 88,1 33,0 3,2 73,9 2,3 89,9 48,9 3,2 190 - 19,6cc 96,9 53,7 3,7 92,7 35,2 3,4 78,4 2,4 94,4 51,2 3,4 230 - 23,7cc 102,8 56,6 3,9 98,6 38,2 3,5 84,3 2,6 100,3 54,1 3,5 The two following parameters are of the utmost importance when selecting multiple pumps and must never be exceeded: -Drive shaft load index ”A” -Internal coupling load index ”K” Maxi. load index K 5240 for double pump K = (p2 x V2) for triple pump K = (p2 x V2) + (p3 x V3) for quadruple pump K = (p2 x V2) + (p3 x V3) + (p4 x V4) -Maximumdrive shaft load index ”A”, see table below for double pump A = (p1 x V1) + (p2 x V2) for triple pump A = (p1 x V1) + (p2 x V2) + (p3 x V3) for quadruple pump A = (p1 x V1) + (p2 x V2) + (p3 x V3) + (p4x V4) Drive Load index Drive Load index shaft A shaft A BA 10488 MB 10488 FA 5100 NB 10488 JA 6215 QB 5012 Note: P = actual pressure in bar, V = applicable displacement from Table page 4-7. In multiple pumps, shaft end section must have largest displacement. Each consecutive section must have displacement equal to or smaller than section proceeding. Concentricmultiple pumps are also availablewith reducednumber of inlets. Please contact Concentric for details. Please, contact Concentric for pump applications requiring independently sealed sections. At left are shown the dimensions for the through bolt type pumps. Shaft end section quality products for mechanical & fluid power ~ jbj Techniques Limited, www.jbj.co.uk UK distributor for Concentric Hydraulics
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