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 Rear section 2nd & 3rd section A1-section 190 - 19 cc 105,5 63,3 7,0 104,5 40,3 5,0 82,5 4,1 131,5 89,3 7,4 230 - 23 cc 109,7 65,4 7,3 108,7 42,4 5,3 86,7 4,3 135,7 91,4 7,6 280 - 28 cc 114,9 68,0 7,5 112,9 45,0 5,5 91,9 4,6 140,9 94,0 7,9 330 - 33 cc 120,1 70,6 7,8 119,1 47,6 5,8 97,1 4,8 146,1 96,6 8,1 380 - 38 cc 125,3 73,2 8,1 124,3 50,2 6,1 102,3 5,1 151,3 95,2 8,4 440 - 44 cc 131,5 76,3 8,3 130,5 53,3 6,3 108,5 5,4 157,5 102,3 8,7 500 - 50 cc 137,7 79,4 9,1 136,7 56,4 7,1 114,7 6,2 163,7 105,4 9,5 MULTIPLE PUMPS Section 1 Section 2 Section 1 Section 2 Section 3 Section 1 Section 2 Section 3 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 10488 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 V4) + (p4 x V4) -Maximum drive 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 DA 20976 RB 7210 KA 18240 WA 20976 Note: p = actual pressure in bar, V = applicable displacement in cc from table page 4-9. In multiple pumps, shaft end section must have largest displacement. Each consecutive section must have displacement equal to or smaller than section preceeding. Concentric multiple pumps are also available with reduced number of inlets. Please contact Concentric for details. Please, contact Concentric for pump applications requiring independently sealed sections. W1500 plus W900 pump assemblies are possible, please contact Concentric. At left are shown the diverge dimensions for the SAE A flange bolt type pumps. 8 quality products for mechanical & fluid power ~ jbj Techniques Limited, www.jbj.co.uk UK distributor for Concentric Hydraulics
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