8 System Descriptions (cont.) FAN DRIVE SYSTEMS: Independently Variable Circuit 5 - Proportional relief valve to control motor speed from idle to max. RPM and to protect the motor from over-pressurization. * Length adder to Hydraulic Motor Catalog max. length dimension, mm [inch]. E.G. WM900 L above = 32 mm. WM900 max. length in Motor Catalog - pg 16 (X dim.) = 111 mm [4.37 in.] for 19 cc. Therefore, 32 mm + 111 mm = 143 mm [5.62 in.] max. length. WM600 WM900 WM1500 FM20 FM30 FAMILY WM600 WM900 WM1500 GM20 GM30 L* 37 [1.45] 32 [1.25] 40 [1.57] 32 1.25] 35 [1.37] W 153 [6.02] 88 [3.46] 113 [4.44] 148 [5.82] 171 [6.73] H 89 [3.5] 140 [5.51] 159 [6.25] 180 [7.08] 213 [8.38] NOTE: Valve coils not shown for clarity. * Length adder to Hydraulic Motor Catalog max. length dimension, mm [inch]. E.G. WM900 L above = 46 mm. WM900 max. length in Motor Catalog - pg 16 (X dim.) = 111 mm [4.37 in.] for 19 cc. Therefore, 46 mm + 111 mm = 157 mm [6.18 in.] max. length. WM600 WM900 WM1500 FM20 FM30 FAMILY WM600 WM900 WM1500 GM20 GM30 L* 37 [1.45] 46 [1.81] 40 [1.57] 32 [1.25] 35 [1.37] W 153 [6.02] 90 [3.54] 173 [6.81] 148 [5.82] 171 [6.73] H 89 [3.5] 139 [5.47] 135 [5.31] 190 [7.48] 213 [8.38] Circuit 6 - Proportional relief valve to control motor speed from idle to max. RPM and protect the motor from over-pressurization and check valve to prevent cavitation during deceleration and spin-down. NOTE: Valve coils not shown for clarity. PERFORMANCE (Circuits 5 & 6) PERFORMANCE (Circuits 5 & 6) quality products for mechanical & fluid power jbj Techniques Limited, www.jbj.co.uk quality products for mechanical & fluid power ~ jbj Techniques Limited, www.jbj.co.uk UK distributor for Concentric Hydraulics
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