3 2 1 2 3 4 5 6 7 8 9 10 11 WM 09 A 1 C 080 R 03 BA 150 N 4 1 3 5 6 7 8 9 10 11 drain. For the external drain port the above mentioned back-pressure limits are still valid. Lead the drain line directly to the oil reservoir. Do not connect it to the return line with filters because of possible back-pressure peaks. The bi-direction (code B) specified motors have an external drain port as standard, the above mentioned back-pressure limits are also valid for these motors. Product has been tested to 1.000.000 cycles at pI. Intermittent pressure pII is permitted at max. 20 sec loaded following 10 sec minimum unloaded. Product has been tested to 500.000 cycles at pIII. Above represents performance, which can be expected fromunits incorporating flange port styles. Speed range Minimum speed for all motor sizes n = 500 rpm at Δp>25 bar. Maximumspeed depends on bothmotor size and selected ports (see charts from page 4 onwards). Noise performance Data according to DIN 45 635. Typical levels at 200 bar and 2300 rpm using mineral oil with viscosity of 40 mm2/s and at a temperature of 50º C: WM09A1-080 WM09A1-160 WM09A1-230 60 dB(A) 65 dB(A); 68 dB(A) Hydraulic fluids The use of HL-or HLP-hydraulic oils according to DIN 51 524 is recommended. The permissible viscosity for all WM09 motors ranges from 750 to 10 mm2/s. The recommended operating viscosity range is from 40 to 16 mm2/s. The permissible cold start viscosity is 2000 mm2/s. We recommend contacting Concentric before using fire resistant or bio-degradable fluids. Temperature range Ambient temperature, min. -15° C max. +80° C Fluid temperature, cont. operation, max. +90° C short term operation, max. +105° C Please note Viscosity, when operating at above temperature limits, has to remain within the range specified under ”Hydraulic Fluids”. Fluid cleanliness Fluid cleanliness according to ISO4406/1986 Code 18/14 or better is required in order to assure the motor’s high level of efficiency over a long period. Power take off Flexible couplings are preferred for direct drives. For higher outboard side loads the motors are availablewith reinforced front bearing. See pages 7 and 8 as well as page 14. Mounting position As required. Symbols Single motor uni-directional Single motor bi-directional WM900 DESCRIPTION The WM900 motors are part of the W-family of gearmotors, which represent themost advanced motor design from Concentric. The basic motor is of a three-piece modular design. The motor body is manufactured from high strength aluminium alloy. For optimum strength, gears and shafts are precision machined as one piece. The 13-tooth gear geometry has been optimised for lownoise level. The patented axial pressure compensation ensures an excellent volumetric efficiency at all regular operating conditions (especially for motor applications in series). Controlled internal oil flow results in continuous lubrication and heat exchange. This enables operation across a wide speed range at very high loads. All shaft-bearing surfaces are Teflon® coated and sizes are calculated for long service life. They also require low pressure to start the motor operation. For applications with high radial loads and/or axial loads at the drive shaft motors are available with reinforced front bearings. A wide range of mounting flanges and port sizes are available to meet European and international standards. General Data Displacement V 6 - 31 cc/rev Speed n 500 - 4000 rpm Pressure rated pressure PI up to 276 bar intermittent pressure PII up to 300 bar peak pressure PIII up to 330 bar Operating temperatures t up to 105º C Average volumetric efficiency 97 % The maximum values for n, PI and t for a given motor specification may be applied simultaneously dependent on selected motor and its specification. PERFORMANCE DATA pI pII p Model code example for a single motor = Type = Series = Design revision = # of sections = Seal material = Displacement per section = Rotation = Mounting flange = Drive shaft = Portings = Valve options Operating pressure range The motors will rotate also at differential pressure Δp<25 bar according to actual conditions. However, for specified motor performance data a continuous differential pressure of Δp>25 bar is required from inlet to outlet. Maximum pressure at inlet port Type Pressure (bar) Rated. pI Intermitt. pII Peak pIII WM09A1-060 276 300 330 WM09A1-080 276 300 330 WM09A1-110 276 300 330 WM09A1-140 276 300 330 WM09A1-160 276 300 330 WM09A1-190 276 300 330 WM09A1-230 221 245 265 WM09A1-270 185 203 220 WM09A1-310 170 185 200 Motors specified for only one direction (codes R or L) with internal drain cannot be loaded at their outlet port by back pressures which exceed the following limits: P = 1 bar continuous (Buna), P = 8 bar short time (Viton). If these pressure limits cannot be met you must use bi-directional motors (code B) with external Options • SAE mounting flange, rectangular flanges, through bolt model • Splined, tapered or straight shaft with key • Threaded or flanged ports • Reinforced front bearings • Built-in valves and specials • Fan drive motor quality products for mechanical & fluid power ~ jbj Techniques Limited, www.jbj.co.uk UK distributor for Concentric Hydraulics
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