Variable Displacement Motor AA6VM (A6VM)

Transcription

1 Variable Displacement otor 6V (6V) Series 6, for open and closed circuits xial tapered piston - bent axis design 5800 psi Sizes Nominal Pressure up to (400 bar) Peak Pressure up to 6500 psi (450 bar) R /08.97 R /08.97 Replaces: R 91604/07.95 R 91603/05.95 Variable displacement motor with axial piston rotary group of bent axis design, for hydrostatic drives in open and closed circuits. The motor is suitable for both mobile and industrial applications. The wide control range of the variable displacement motor allows it to meet the requirements of high speed and high torque. The displacement is infinitely variable in the range V g max to V g min = 0. Output speed is proportional to flow and inversely proportional to displacement. The output torque increases with the pressure drop between the high and low pressure sides and with increasing displacement. Wide control range for hydrostatic drives Various control and regulating devices Cost saving through elimination of gearbox and possibility of using smaller pumps Compact, robust bearing system with long service life Low unit power ood starting characteristics Low inertia Wide swivel range 1

2 Variable Displacement otor 6V (6V) Ordering Code / Standard Program Hydraulic fluid Petroleum oil (no code) HF-fluids sizes (no code) sizes (only in connection with drive shaft bearings "L") xial piston unit ent axis design, Version SE 6V variable displacement Version ISO 6V Drive shaft bearings echanical bearings (no code) Long-Life bearings _ L ode of operation otor (Plug-in motor 6VE see RE 91606) Size size Displacement V g max cm 3 /rev in 3 /rev Control device Hydraulic control, HD 1 HD1 pilot presure related HD 2 HD2 HD 1 D HD1D HD 2 D HD2D HD 1 _ HD1 HD 2 _ HD2 pilot pressure increase p = 145 psi (10 bar) with remote constant pressure control pilot pressure increase p = 365 psi (25 bar) with direct constant pressure control Hydraulic HZ _ HZ two-position control HZ1 _ HZ1 _ HZ3 _ HZ3 Electrical control, EP 1 EP1 with proportional solenoid EP 2 EP2 EP 1 D EP1D EP 2 D EP2D EP 1 _ EP1 EP 2 _ EP2 control voltage 12 V with remote constant pressure control control voltage 24 V with direct constant pressure control Electrical two-position control, EZ 1 _ EZ1 with switching solenoid EZ 2 _ EZ2 EZ 3 EZ3 EZ 4 EZ4 control voltage 12 V control voltage 24 V utomatic control, H 1 H1. high pressure related H 2 H2. odel without pressure increase odel with pressure increase p = 1450 psi (100 bar) Override without override (no code) with hydraulic override with electrical override, 12V _ with electrical override, 24V _ with el. override + el. valve for travel direction, 12V _ with el. override + el. valve for travel direction, 24V _ Hydraulic control, speed related _ D p St /p HD = 5/100, hydraulic valve for travel direction D1 el. valve for travel direction (12V) + el. V g max -switch (12V) D2 el. valve for travel direction (24V) + el. V g max -switch (24V) D3 p St /p HD = 8/100, hydraulic valve for travel direction D4 el. valve for travel direction (12V) + el. V g max -switch (12V) D5 el. valve for travel direction (24V) + el. V g max -switch (24V) D6 E T U1 U2 R1 R2 Hydraulic fluid xial piston unit Drive shaft bearings ode of operation Size Control device 1 ) indicate in the order in clear text: sizes V g min =... in 3 (cm 3 ) sizes V g min =... in 3 (cm 3 ), V g max =... in 3 (cm 3 ) 2 ) only possible in connection with controls HD, H1, H2; metric threads! / 6 3 W - Series/Index 6 3 Direction of rotation viewed on shaft end bi-directional W Setting range for displacement 1) V g min = 0 to 0,8 V g max (no code) V g min = 0 to 0,4 V g max /V g max = V g max to 0,8 V g max 1 V g min = 0,4 V g max to 0,8 V g max /V g max = V g max to 0,8 V g max 2 Seals NR (nitril-caoutchouc), shaft seal in FP P FP (fluor-caoutchouc) V Shaft end SE-Version (6V) SE-splined shaft S ISO-Version Splined shaft DIN 5480 (6V) Z Parallel shaft with key DIN 6885 P ounting flange SE-Version SE 2-bolt C (6V) SE 4-bolt D ISO-Version ISO 4-bolt (6V) ISO 8-bolt H Service ports SE-Version Ports, : SE rear end (6V) (UN threads) Ports, : SE on (opposite) sides (UN threads) Port plate for mounting a motion control valve Port plate with pressure relief valve, for mounting a motion control valve 2 ) ISO-Version Ports, : SE rear end (6V) (metric threads) Ports, : SE on (opposite) sides (metric threads) Valves without valve 0 with flushing and boost pressure valve 7 with built-on motion control valve 8 Speed sensor without speed sensor (no code) prepared for speed sensor D Swivel angle indicato without swivel angle indicator (no code) with optical swivel angle indicator V with electronical swivel angel indicator E Start of control at Vg min (standard for H) at Vg max (standard for HD, HZ, EP, EZ, D) = available = in preparation = not available 2-3

3 Variable Displacement otor 6V (6V) Technical Data Hydraulic fluid We request that before starting a project detailed information about the choice of pressure fluids and application conditions are taken from our catalogue sheets R (petroleum oil), R (environmentally acceptable hydraulic fluids) and R (fire resistance fluids, HF). When using HF- or environmentally acceptable hydraulic fluids possible limitations for the technical data have to be taken into consideration. If necessary please consult us or your fluid supplier (please indicate type of the hydraulic fluid used for your application on the order sheet). Operating viscosity range In order to obtain optimum efficiency and service life, we recommend that the operating viscosity (at operating temperature) be selected from within the range: Optimum operating viscosity (ν opt ) SUS ( mm 2 /s) referred to the loop temperature (closed circuit) or reservoir temperature (open circuit). Viscosity limits The limiting values for viscosity are as follows: ν min = 42 SUS (5 mm 2 /s) short term at a max. permissible temp. of t max = 240 F (115 C) ν max = 7400 SUS (1600 mm 2 /s) short term on cold start (t min = -40 F/-40 C) ν min = 60 SUS (10 mm 2 /s) short term at a max. permissible leakage oil temperature of t max = 195 F (90 C) ν max = 4600 SUS (1000 mm 2 /s) short term on cold start (t min = -13 F/-25 C) Please note that the max. fluid temperature is also not exceeded in certain areas (for instance bearing area). t temperatures of -13 F up to -40 F (-25 C up to -40 C) special measures may be required for certain installation positions. Please contact us for further information. Selection diagram Viscosity v SUS (mm 2 /s) (1600) (1000) (600) (400) (200) (100) (60) (40) (20) (10) V 22 V 32 V 68 V 46 V 100,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 7400 (1600) 4600 (1000) 170 (36) 80 (16) 60 (10) (5) 42 (5 ) v opt. Notes on the selection of the hydraulic fluid In order to select the correct fluid, it is necessary to know the operating temperature in the loop (closed circuit) or the reservoir temperature (open circuit) in relation to the ambient temperature. The hydraulic fluid should be selected so that within the operating temperature range, the operating viscosity lies within the optimum range (ν opt ) (see shaded section of the selection diagram). We recommend that the highest possible viscosity range should be chosen in each case. Example: t an ambient temperature of the operating temperature (closed circuit: loop temperature; open circuit: reservoir temperature) is 140 F (60 C). Within the optimum operating viscosity range (ν opt ; shaded area), this corresponds to viscosity grades V 46 or V 68. V 68 should be selected. Important: The leakage oil (case drain oil) temperature is influenced by pressure and motor speed and is always higher than the circuit temperature or the reservoir temperature. However, at no point in the system may the temperature exceed 240 F (115 C) for sizes or 195 F (90 C) for sizes If it is not possible to comply with the above condition because of extreme operating parameters or high ambient temperatures we recommend housing flushing via port U or use of a flushing valve (see page 5). Please consult us. Filtration The finer the filtration the better the achieved purity grade of the pressure fluid and the longer the life of the axial piston unit. To ensure the functioning of the axial piston unit a minimum purity grade of: 9 to NS to SE 18/15 to ISO/DIS 4406 is necessary. t very high temperatures of the hydraulic fluid (195 F to max. 240 F / 90 C to max. 115 C, not perm. for sizes ) at least cleanless class 8 to NS to SE 17/14 to ISO/DIS 4406 is necessary. If above mentioned grades cannot be maintained please consult us. Direction of flow clockwise rotation to counter-clockwise rotation to Speed range There is no limitation on minimum speed n min. If uniformity of rotation is required, however, speed n min should not be allowed to fall below 50 rpm. See table on page 6 for max. permissible speeds. Installation position Optional. The motor housing must be filled with fluid prior the commissioning, and must remain full whenever it is operating. For extensive information on installation position, please consult our data sheet R before completing your design work. (-40) (-30) (-20) (-10) (0) (10) (20) (30) (40) (50) (60) (70) (80) (90)(100) (115) (110) Temperature t in F ( C) 4

4 Variable Displacement otor 6V (6V) Technical Data Case drain pressure Shaft seal ring FP (fluor-caoutchouc) The lower the speed and the case drain pressure the higher the life expectation of the shaft seal ring. The values shown in the diagram are permissible loads of the seal ring and shall not be exceeded. t stationary pressure loads in the range of the max. admissible leakage pressure a reduction of the life experience of the seal ring will result. For a short period (t < 5 min.) pressure loads up to 75 psi (5 bar) independent from rotational speeds are permissible respectively for sizes permissible pressure p abs. max. psi (bar) 90 (6) 75 (5) 60 (4) 45 (3) 30 (2) 15 (1) permissible pressure p abs. max. psi (bar) 60 (4) 45 (3) 30 (2) 1000 sizes 107, 140 sizes 160, 200 size 28 size 55 size speed n in rpm size 500 size 250 size 355 size (1) speed n in rpm Special operation conditions may require limitations of these values. Note: - max. permissible motor speeds are given in the table on page 6. - max.permissible housing pressure sizes : p abs. max = 90 psi (6 bar) sizes : p abs. max = 60 psi (4 bar) The pressure in the housing must be the same as or greater than the external pressure on the shaft seal. Long-life bearings (sizes ) For long service life and HF fluids. Special features: The external dimensions of the axial piston pump do not vary from the standard. The long-life bearing set may be subsequently built into available axial piston pumps. The drain case port must always be open. It is recommended that the bearings are flushed via port U. Flushing and boost pressure valve The flushing and boost pressure valve (closed circuits) is set at a fixed pressure of 230 psi (16 bar) and serves to maintain the minimum boost pressure (set primary valve accordingly). Dependend on the control device and motor size, the valve is mounted onto the variable motor or integrated in the control device (see page 35). quantity of hydraulic fluid, determined by the orifice fitted, is drawn off from the low pressure side and passed into the motor housing, from where it is led off to reservoir together with the leakage fluid. The fluid thus taken from the circuit must be replaced with cooled oil by means of the boost pump. Different flushing volumes can be selected by means of orifices. Flow * (for low pressure p= 365 psi/25 bar) Size Volume Orifice-No. 28, gpm (3,5 L/min) / gpm (5 L/min) / gpm (8 L/min) / , gpm (10 L/min) / gpm (10 L/min) gpm (16 L/min) gpm (20 L/min) gpm (25 L/min) * Standard flushing volumes (for sizes flushing volumes of gpm (3,5-10 L/min) can be supplied. If a flushing volume different from the standard flushing volume is required, please indicate the requested orifice in clear text when ordering.) T T () () Operating pressure range aximum pressure at port or (Pressure data to DIN 24312) Nominal pressure p N 5800 psi (400 bar)* Peak pressure p max 6525 psi (450 bar)* *) size 80: p N = 5100 psi (350 bar), p max = 5800 psi (400 bar) ttention: shaft end Z and S with drives of radial force loads at the drive shaft (pinion V-belt drives) necessitate reduction of the nominal pressure to p N = 4570 psi (315 bar), size 80: p N = 2900 psi (200 bar). Please contact us. Nominal pressure p N Peak pressure p max 5100 psi (350 bar) 5800 psi (400 bar) With pulsating loads above 4570 psi (315 bar) we recommend using the model with splined shaft (sizes ). The summ of the pressures at ports and may not exceed psi (700 bar). 5

5 Variable Displacement otor 6V (6V) Table of values (theoretical values, without considering η mh and η v ; values rounded) Size Displacement V g max in 3 /rev cm 3 /rev 28,1 54, V 1 g 0 ) in 3 (cm 3 )/rev ax. speed n max at V g max rpm n max, intermittent at V 2 g max ) rpm n max at V g < V g,1 rpm V g,1 in 3 /rev cm 3 /rev n max at V g 0 rpm ax. perm. flow q V max gpm L/min Torque constants T k at V g max lb-ft/psi Nm/bar 0,446 0,87 1,27 1,70 2,23 2,54 3,18 3,98 5,65 7,96 15,92 ax. torque T max at V 3 g max ) lb-ft Nm Case volume gal L 0,5 0,75 1,2 1,5 1,8 2,4 2,7 3,0 7,0 oment of inertia J lbs-ft about drive axis kgm 2 0,0014 0,0042 0,0080 0,0127 0,0207 0,0253 0,0353 0,061 0,102 0,178 0,550 Weight (approx.) m lbs kg ) The minimum displacement V g min is infinitely adjustable between V g 0 and 0,8. V g max. Indicate in the order: V g min =... cm 3 (note for sizes : V g min is set to 0,2. V g max when there is no indication in the order!) 2 ) Intermittent max. speed: overspeed at discharge and overtaking travel operation, t < 5 sec. and p < 2175 psi (150 bar) 3 ) : p = 5800 psi (400 bar); sizes : p = 5100 psi (350 bar) Permissible displacement, speed related V 1,0 g V g max 0,8 0,6 0,4 0,2 0 0,2 0,4 0,6 0,8 sizes N ,0 sizes N ,2 1,4 1,6 n n max bei at V g max Calculation of size T n q ( V p η t P = = kw ) ( V g n ) ( q V 1000 η v V g ) ( V g p η mh ) V g n Flow q V = gpm q V = L/min 231 η v 1000 η v q V 231 η Output Speed n = v rpm n = rpm V g V g p η mh Output Torque T = lb-ft T = Nm 24 π 20 π T n q V p η Output Power P = = t HP V g = geometric displacement per rev. - in 3 (cm 3 ) p = pressure differential - psi (bar) η v = volumetric efficiency η mh = mech.-hyd. efficiency η t = total efficiency (η v η mh = η t ) 6

6 Variable Displacement otor 6V (6V) Output drive Permissible axial and radial loading on drive shaft. The values given are maximum values and not permissible for continuous operation. Size a in mm F q max lbf ) ) ) N ) ) ) ± F ax max lbf + F ax max F ax max N + F ax max F ax max ± F ax perm. /psi lbf/psi ) 2 ) 2 ) 2 ) ± F ax perm. /bar N/bar ) 2 ) 2 ) 2 ) 1 ) xial piston unit in stationary or in bypass operation, please contact us when appearing higher forces! 2 ) Please contact us! Code explanation a F q max = distance of F q from shaft shoulder = max. perm. radial force at distance a (at intermittent operation) ±F ax max = max. perm. axial force when stationary or when axial piston unit is running at zero pressure ±F ax perm. /psi =perm. axial force/psi operating pressure ±F ax perm. /bar =perm. axial force/bar operating pressure (Fq) a The direction of the max. axial force must be noted by sizes F ax max =increased bearing life + F ax max =reduced bearing life F ax (avoid if possible) Speed sensor ( D ) Version 6V (6V)... D ( with provisions for speed sensor ) includes toothed collar on the rotary group. speed-proportional signal is produced by means of the rotating, toothed rotary group which can be picked up by a suitable sensor and fed back for evaluation. The speed sensor can be screwed into the upper drain port. n additional adapter piece (included in supply) is necessary for the drain ports sizes in order to install the speed sensors (thread metric 18x1,5). Size no. of teath The speed sensor is not included in standard supply; Suitable sensors: -Induktive impulse detector ID (see R 95038) -Hall effect speed sensor HD (see R 95042); order seperately! Optimal force direction of F q (valid for sizes ) y means of appropriate force directions of F q the bearing load caused by inside rotary group forces can be reduced. n optimal life expectation of the bearing can be reached. ear drive CCW rotation pressure at port V-belt drive ϕ opt = 45 ϕ opt = 45 i-directional rotation CW rotation pressure at port i-directional rotation speed sensor (ID/HD) ϕ opt = 70 ϕ opt = 70 CW rotation pressure at port CCW rotation pressure at port 7

7 Variable Displacement otor 6V (6V) HD Hydraulic Control, Pilot Pressure Related The pilot pressure related hydraulic control allows infinite variation of the motor displacement in relation to a pilot pressure signal. The control function is proportional to the pilot pressure applied at port. HD1 Pilot pressure increase 145 psi (10 bar) - sizes (V g min = 0 to V g max ) p S = 145 psi (10 bar) - sizes (V g min = 0,2 V g max to V g max ) p S = 145 psi (10 bar) Start of control, setting range: - sizes psi (2-20 bar) Standard setting: start of control at 45 psi (3 bar) end of control at 190 psi (13 bar) HD2 Pilot pressure increase 365 psi (25 bar) - sizes (V g min = 0 to V g max ) p S = 365 psi (25 bar) - sizes (V g min = 0,2 V g max to V g max ) p S = 365 psi (25 bar) Start of control, setting range: - sizes psi (5-50 bar) Standard setting: start of control at 145 psi (10 bar) end of control at 510 psi (35 bar) When ordering please state required start of control in clear text, e.g. start of control at 45 psi (3 bar). Circuit diagram: Hydraulic control, pilot pressure related HD1, HD2 0 0,2 0,4 0,6 0,8 1,0 V g 0 sizes sizes V g V g max V g max displacement start of control pilot pressure setting range increase psi (bar) 465 (32) 435 (30) 400 (28) 350 (24) 290 (20) 230 (16) 175 (12) 115 (8) 60 (4) Standard version: - start of control at V g max (max. torque, min. speed) - end of control at V g min (min. torque, max. perm. speed) psi (bar) 1160 (80) 1090 (75) 1015 (70) 870 (60) 725 (50) 580 (40) 435 (30) 290 (20) 145 (10) pressure increase p s HD1 HD2 ( p = 145 psi) ( p = 365 psi) ( p = 10 bar) ( p = 25 bar) ax. perm. pilot pressure 1450 psi (100 bar) ecause of internal leakage, there is a leakage flow of approx gpm (0,3 L/min.) at port. To prevent an influence on the characteristic, leakage flow has to be led into the tank through the control device. Unit dimensions control HD, see page

8 Variable Displacement otor 6V (6V) Variation: Constant pressure control (HD.D) The constant pressure control is superimposed on the HD function. Should system pressure rise as a result of the load torque or reduction of the motor swivel angle, when the setting of the constant pressure control is reached the motor is swivelled out to a higher angle. s a result of the increased displacement and consequent pressure reduction, the control deviation is eliminated. y increasing the displacement the motor produces a higher torque at a constant pressure. Setting range of constant pressure control valve: sizes psi ( bar) sizes psi ( bar) Circuit diagram: Hydraulic control, pilot pressure related, with constant pressure control HD1D, HD2D Variation: Remote constant pressure control (HD.) The remote pressure control controls the motor when reaching the set pressure command signal continuously until it reaches the max. displacement V g max. pressure relief valve (not supplied), which is separate to the motor, is responsible for the control of the internal pressure cut-off valve. s long as the pressure command signal has not been obtained, the valve is, in addition to the spring force, pressurised from both sides, and is held closed. The pressure command signal is between 1160 and 5100 psi (80 bar and 350 bar). On reaching the pressure command signal at the separate pressure relief valve, this opens, whereby the pressure on the spring side is allowed to flow to tank. The internal pilot valve operates and the motor swivels to maximum displacement V g max. The pressure difference at the pilot valve is set as standard to 365 psi (25 bar). We recommend the following as a separate pressure relief valve: DD 6 (hydraulic) to R The max. line length should not exceed 6 ft (2 m). Circuit diagram: Hydraulic control, pilot pressure related, with remote constant pressure control HD1, HD2 9

9 Variable Displacement otor 6V (6V) efore finalising your design, please request a certified drawing. Unit dimensions HD1D, HD2D up to flange surface Size port 6V x1,5 (214) (189) (119) (87) (136) (35,5) x1,5 (323) (290) (141) (108) (195) (40,5) 6V /16-18 UNF-2 (265) (240) (120) (89) (151) (35,5) /16-18 UNF-2 (293) (268) (126) (95) (167) (35,5) /16-18 UNF-2 (323) (290) (133) (101) (175) (40,5) /16-18 UNF-2 (361) (329) (141) (108) (197) (40,5) /16-18 UNF-2 (378) (345) (145) (112) (209) (40,5) Unit dimensions HD1D, HD2D, HD1, HD Size ports, 3 6V /16-18 UNF-2 (427) (369) (188) (123) (272) (48,5) (256) (318) (35) 6V x1,5 (432) (366) (203) (137) (288) (54) (271) (287) (33) x1, (490) (417) (215) (148) (306) (61,5) (287) (314) (23) Pilot pressure port 3 : open at HD., plugged at HD.D 10

10 Variable Displacement otor 6V (6V) efore finalising your design, please request a certified drawing. HZ Hydraulic Two-Position Control The hydraulic two-position control allows the displacement to be set to V g min or V g max by applying or venting pilot pressure at port. Standard version: - start of control at V g max (max. torque, min. speed) - end of control at V g min (min. torque, max. perm. speed) Circuit diagram: Hydraulic two-position control HZ3 Sizes 55, 80, (10) 0 pilot pressure p S - psi (bar) V g 0 displacement V g max Circuit diagram: Hydraulic two-position control HZ1 Sizes 28, 140, 160, 200 Unit dimensions HZ3 Sizes 55, 80, 107 Unit dimensions of control HZ (sizes ) and HZ1 (sizes 28, 140, 160, 200) see pages service line ports, at side (52) Circuit diagram: Hydraulic two-position control HZ service line ports, at rear end (51) Size V (251) (207) (100) (146) (117) (31) (24) (175) (239) (61) (152) (37,5) (37,5) (160) (279) (232) (114) (161) (132) (35) (27) (196) (266) (61) (164) (42) (42) (172) (302) (252) (122) (173) (143) (38) (30) (214) (288) (61) (180) (42) (42) (188) Size Service line ports, 1 ) Pilot pressure port 6V 55 SE 3/4"; threads 2/8-16 UNC-2 9/16-18 UNF-2 80 SE 1"; threads 7/16-14 UNC-2 9/16-18 UNF SE 1"; threads 7/16-14 UNC-2 9/16-18 UNF-2 1) 6000 psi (420 bar) high pressure series 11

11 Variable Displacement otor 6V (6V) EP Electrical Control with Proportional Solenoid The electrical control with proportional solenoid or proportional valve (sizes ) allows infinite variation of the motor displacement in relation to an electrical signal. The control function is proportional to the electrical control current applied. control current control voltage start of control end of control (DC) (V g max ) (V g min = 0) EP1 12 V 400 m 1200 m EP2 24 V 200 m 600 m control current control voltage start of control end of control (DC) (V g max ) (V g min = 0,2 V g max ) EP1 12 V 900 m 1400 m EP2 24 V 450 m 700 m Pilot pressure p psi, max psi (30 bar, max. 100 bar) Circuit diagram: Electrical control with proportional solenoid EP1, EP2 0 0,2 0,4 0,6 0,8 1,0 V g 0 sizes N sizes N V g V g max V g max EP1 (12 V) displacement 1600 max max EP2 (24 V) Standard version: - start of control at V g max (max. torque, min. speed) - end of control at V g min (min. torque, max. perm. speed) pilot current I in m Circuit diagram: Electrical control with proportional solenoid EP1, EP2 proportional valve DRE4K (see R 29181) djustment of the control speed or limiting of the displacement (Iimiting of swivel) range by electrical means is possible using the following control devices: Proportional amplifier PV see R Chopper amplifier CV see R Electrical amplifier 2014/15 see R Electrical amplifier VT 2000, series 5 see R

12 Variable Displacement otor 6V (6V) Variation: Direct constant pressure control (EP.D) The constant pressure control is superimposed on the EP function. Should system pressure rise as a result of the load torque or reduction of the motor swivel angle, when the setting of the constant pressure control is reached the motor is swivelled out to a higher angle. s a result of the increased displacement and consequent pressure reduction, the control deviation is eliminated. y increasing the displacement the motor produces a higher torque at a constant pressure. Setting range of constant pressure control valve: psi ( bar) psi ( bar) Circuit diagram: Electrical control with proportional solenoid, with direct constant pressure control EP1D, EP2D Variation: Remote constant pressure control (EP.) The remote pressure control controls the motor when reaching the set pressure command signal continuously until it reaches the max. displacement V g max. pressure relief valve (not supplied), which is separate to the motor, is responsible for the control of the internal pressure cut-off valve. s long as the pressure command signal has not been obtained, the valve is, in addition to the spring force, pressurised from both sides, and is held closed. The pressure command signal is between 1160 psi and 5100 psi (80 bar and 350 bar). On reaching the pressure command signal at the separate pressure relief valve, this opens, whereby the pressure on the spring side is allowed to flow to tank. The internal pilot valve operates and the motor swivels to maximum displacement V g max. The pressure difference at the pilot valve is set as standard to 365 psi (25 bar). We recommend the following as a separate pressure relief valve: DD 6 (hydraulic) to R The max. line length should not exceed 6 ft (2 m). Circuit diagram: Electrical control with proportional solenoid, with remote constant pressure control EP1, EP2 13

13 Variable Displacement otor 6V (6V) efore finalising your design, please request a certified drawing. Unit dimensions EP1, EP2 up to flange surface Unit dimensions EP1D, EP2D up to flange surface Size V (214) 6.54 (166) 5.35 (136) (322) 7.36 (187) 7.68 (195) 6V (265) 6.57 (167) 5.94 (151) (293) 6.81 (173) 6.57 (167) (323) 7.05 (179) 6.89 (175) (361) 7.36 (187) 7.76 (197) (377) 7.52 (191) 8.23 (209) Size V (214) 6.54 (166) 5.35 (136) (322) 7.36 (187) 7.68 (195) 6V (265) 6.57 (167) 5.94 (151) (293) 6.81 (173) 6.57 (167) (323) 7.05 (179) 6.89 (175) (361) 7.36 (187) 7.76 (197) (377) 7.52 (191) 8.23 (209) Unit dimensions EP1, EP2 1 4 P P11 Unit dimensions EP1D, EP2D, EP1, EP P P Size V (427) 7.40 (188) (272) 4.88 (124) 6V (432) 7.99 (203) (288) 4.92 (125) (490) 8.46 (215) (306) 5.20 (132) 1000 Pilot pressure port P: 6V 250 9/16-18 UNF-2 6V x1,5 Pilot pressure port 3 : 6V 250 9/16-18 UNF-2 6V x1,5 (open at EP., plugged at EP.D) Size V (427) 7.40 (188) (272) 4.88 (124) 6V (432) 7.99 (203) (288) 4.92 (125) (490) 8.46 (215) (306) 5.20 (132) 1000 Size V (36) (256) 1.38 (35) (309) 6V (36) (271) 1.30 (33) (287) (43) (287) 1.26 (32) (314)

14 Variable Displacement otor 6V (6V) R /08.97 efore finalising your design, please request a certified drawing. EZ Electrical Two-Position Control with Switching Solenoid The electrical two-position control with switching solenoid allows the displacement to be set to V g max or V g min by energizing or deenergizing the solenoid. Solenoid de-energized Solenoid energized motor set to V g max motor set to V g min Unit dimensions EZ1, EZ2 Sizes 28, 140, 160, 200 up to flange surface EZ1, EZ3 EZ2, EZ4 switching solenoid 12 V DC, 26W (EZ1) 30W (EZ3) switching solenoid 24 V DC, 26W (EZ2) 30W (EZ4) Electrical two-position control EZ1, EZ2 Sizes 28, 140, 160, 200 Size V (216) 6.42 (163) 5.35 (136) (321) 7.24 (184) 7.68 (195) 6V (360) 7.24 (184) 7.76 (197) (376) 7.40 (188) 8.23 (209) Unit dimensions EZ1, EZ2 Sizes 55, 80, 107 up to flange surface Electrical two-position control EZ3, EZ4 Sizes 55, 80, 107 Size V (251) 3.94 (100) 5.75 (146) 4.88 (124) (279) 4.49 (114) 6.34 (161) 4.88 (124) (302) 4.80 (122) 6.81 (173) 4.88 (124) (dditional dimensions of the port plate see page 11, HZ3-control) Electrical two-position control EZ1, EZ2 Unit dimensions EZ1, EZ2 1 4 P Size V (427) 6.73 (171) 9.76 (248) 4.92 (125) 6V (432) 7.17 (182) (279) 5.06 (128,5) (490) 7.76 (197) (306) 5.33 (135,5)

15 Variable Displacement otor 6V (6V) D Hydraulic Control, Speed Related The 6V (6V) variable motor with speed related hydraulic control is particularly suitable for use in hydrostatic transmissions in conjunction with variable pump 4V with D control. The swivel angle of the hydraulic motor is controlled by means of the pilot pressure determined by the input speed of the 4V variable pump and by the operating pressure. n increase in the pump input speed and thus in the pilot pressure causes the motor, in relation to the existing operating pressure, to swivel towards a lower displacement volume (lower torque, higher speed). If operating pressure should rise above the value set with the pressure control, the motor is then swivelled towards a higher displacement volume (higher torque, lower speed). D (sizes ) D1, D4 (sizes ) Hydraulic valve for travel direction Through the control pressure 1 or 2 this valve is switched on/off dependend on the direction of rotation (travel direction) direction of rotation operating pressure in switching solenoid a clockwise 1 When designing a drive using D control, note also the technical data of variable pump 4V with D control. computer program is available at Rexroth to help you with the design of your drive. Full details on request. D2, D3, D5, D6 (sizes ) El. valve for travel direction + el. V g max-switching process The electrical valve is operated by the pressure spring or switch solenoid (a) dependent on the rotational direction (travel direction). Through connection of the electric current at the switch solenoid (b) override of the control is possible and the motor is switched to max. swivel angle (high torque, low speed) (el. V g max-switching process). D2, D5 D3, D6 switching solenoid a, b 12 V DC; 1,6 (min.) switching solenoid a, b 24 V DC; 0,8 (min.) direction of rotation operating pressure in switching solenoid a clockwise energized anti-clockwise de-energized anti-clockwise 2 Circuit diagram: Hydraulic control, speed related D1, D4 Circuit diagram: Hydraulic control, speed related D2, D3, D5, D6 a b Circuit diagram: Hydraulic control, speed related D 1 2 St 16

16 Variable Displacement otor 6V (6V) R /08.97 efore finalising your design, please request a certified drawing. Unit dimensions D1, D4 up to flange surface Unit dimensions D2, D3, D5, D6 up to flange surface switching solenoid b switching solenoid a Size ports 1, 2 6V locking E-8L (216) (152) (120) (93) (136) (160) locking E-8L (322) (247) (141) (115) (195) (174) 6V /16-20 UNF-2 (266) (203) (122) (94) (151) (160) /16-20 UNF-2 (295) (231) (127) (100) (167) (160) /16-20 UNF-2 (323) (248) (134) (107) (175) (174) /16-20 UNF-2 (361) (286) (141) (115) (197) (174) /16-20 UNF-2 (378) (303) (146) (119) (209) (174) Unit dimensions D Note: different position of the ports and St for size 250 and sizes 355, 500 Size port 1 6V x1,5 (218) (175) (158) (130) (136) (110) (8,5) x1,5 (323) (270) (181) (154) (195) (112) (8,5) 6V /16-18 UNF-2 (269) (226) (159) (132) (151) (110) (8,5) /16-18 UNF-2 (295) (254) (162) (138) (167) (110) (8,5) /16-18 UNF-2 (324) (271) (173) (146) (175) (112) (8,5) /16-18 UNF-2 (362) (309) (181) (153) (197) (112) (8,5) /16-18 UNF-2 (379) (326) (185) (158) (209) (112) (8,5) 1 : pilot pressure port Size St St Sizes 355, St 1 2 Size ports, 3 6V /16-18 UNF-2 (427) (188) 1 ) (248) (126) (349) (161) (338) (227) 6V x1,5 (432) (203) 1 ) (279) (140) (327) (123) (422) (108) (257) x1,5 (490) (215) 1 ) (306) (151) (423) (137) (481) (123) (284) ) max. 17

17 Variable Displacement otor 6V (6V) H utomatic Control, High Pressure Related With the automatic, high pressure related control, setting of the displacement is effected automatically as a function of the operating pressure. This control device measures the operating pressure at or internally (no pilot line required) and swivels from V g min to V g max once the pressure setting of the control is reached. Standard version: start of control at V g min (no torque, max. perm. speed) end of control at V g max (max. torque, min. speed) H1 Version with virtually no pressure increase from start of control to end of control. Pressure increase: sizes (V g min = 0 to V g max ) p 145 psi (10 bar) sizes (V g min = 0,2 V g max to V g max ) p 145 psi (10 bar) Start of control, setting range : sizes psi ( bar) sizes psi ( bar) (state required setting in clear text when ordering) H1 operating pressure p psi (bar) 5100 (350) 4900 (340) 4350 (300) 3600 (250) 2900 (200) 2200 (150) 1450 (100) 1160 (80) 725 (50) 0 start of control setting range sizes sizes ,2 0,4 0,6 0,8 1,0 V g 0 V g V g max pressure increase p 145 psi (10 bar) Circuit diagram: utomatic control, high pressure related H1 V g max displacement 18

18 Variable Displacement otor 6V (6V) H2 Version with pressure increase from start of control to end of control. Pressure increase: sizes (V g min = 0 to V g max ) p 1450 psi (100 bar) sizes (V g min = 0,2 V g max to V g max )_ p 1450 psi (100 bar) Start of control, setting range: sizes psi ( bar) sizes psi ( bar) (state required setting in clear text when ordering) Circuit diagram: utomatic control, high pressure related H2 H2 operating pressure p psi (bar) 5100 (350) 4350 (300) 3600 (250) 2900 (200) 2200 (150) 1450 (100) 1160 (80) 725 (50) 0 start of control setting range sizes sizes ,2 0,4 0,6 0,8 1,0 pressure increase p 1450 psi (100 bar) V g 0 V g V g max V g max displacement Variation: Hydraulic override of pressure setting (H.T) On versions H1and H2 the pressure setting (start of control) can be influenced by applying a pilot pressure at port. The pressure setting is reduced by: sizes psi (17 bar) sizes psi (8 bar) per 1 psi (1 bar) pilot pressure. (i.e. - Pilot pressure to high pressure ratio: 1:17) Example (sizes ): pressure setting 4350 psi (300 bar) 4350 psi (300 bar) pilot pressure at port 0 psi (0 bar) 145 psi (10 bar) start of control 4350 psi (300 bar) 1885 psi (130 bar) If the override is only required to set the max displacement (motor swivel to V g max ), a pilot pressure of up to 1450 psi (100 bar) max. is permissible. (Circuit diagram and unit dimensions see control H1, H2, port open, no connection from to T) 19

19 Variable Displacement otor 6V (6V) Variation: Electrical override of pressure setting (H.U1, H.U2) On versions H1and H2 the high pressure related control can be overridden by means of an electrical signal to a switching solenoid. The override causes the motor to swivel to its maximum angle. Switching solenoid de-energised no override Switching solenoid energised motor set to V g max H.U1 H.U2 switching solenoid 12 V DC, 1,6 (min.) switching solenoid 24 V DC, 0,8 (min.) Start of control adjustable between 1160 psi and 4350 psi (80 and 300 bar) (state required setting in clear text when ordering) Circuit diagram: utomatic control, with electrical override H1U1, H1U2 Variation: Electrical override of pressure setting, with electrical valve for travel direction (H.R1, H.R2) On version H1 and H2 the high pressure related control can be overridden by means of an electrical signal to the switching solenoid b. The overrie causes the variable motor to swivel to its maximum angle. Switching solenoid b de-energized no override Switching solenoid b energized motor set to V g max The travel directional valve ensures that also at a change of the high pressure side (for instance travel drive at down hill operation) always the preselected pressure side of the hydraulic motor regulates the swivel angle. n undesired swivel of the variable motor to bigger stroke volume can be avoided. In depending of the direction (travel direction) the travel directional valve is actuated by the pressure spring or the switching solenoid a. direction of rotation operating pressure in switching solenoid a clockwise energized counter-clockwise de-energized H.R1 H.R2 switching solenoid a, b 12 V DC; 1,6 (min.) switching solenoid a, b 24 V DC; 0,8 (min.) Circuit diagram: utomatic control, with electrical override and electrical valve for travel direction H1R1, H1R2 H2U1, H2U2 a b H2R1, H2R2 a b 20

20 Variable Displacement otor 6V (6V) R /08.97 efore finalising your design, please request a certified drawing. Unit dimensions H1, H2, H1T, H2T up to flange surface Unit dimensions H1, H2, H1T, H2T 1 9 Size V (209) (97) (151) (133) (134) (34,5) (316) (132) (198) (178) (225) (40,5) 6V (261) (104) (159) (142) (183) (33,4) (292) (114) (171) (152) (207) (34,5) (322) (122) (183) (164) (231) (40,5) (355) (137) (200) (181) (264) (40,5) (371) (143) (209) (190) (277) (40,5) port : 6V 28/140 14x1,5 6V /16-18 UNF-2 (plugged, open for design H.T) Unit dimensions H1U1, H1U2, H2U1, H2U2 up to flange surface Size V (426) (161) (275) (210) (290) (48,5) (248) (320) (419) (116) 6V (432) (181) (300) (234) (279) (54) (275) (315) (425) (132) (489) (196) (325) (258) (322) (61,5) (300) (359) (483) (144) 1000 port : 6V 250 9/16-18 UNF-2 6V x1,5 (plugged, open for design H.T) Unit dimensions H1R1, H1R2, H2R1, H2R2 up to flange surface Size V (209) 3.82 (97) 8.50 (216) (316) 5.20 (132) (263) 6V (261) 4.09 (104) 8.82 (224) (292) 4.49 (114) 9.37 (238) (314) 4.80 (122) 9.80 (249) (355) 5.39 (137) (266) (371) 5.63 (143) (275) Size V (209) 3.82 (97) 8.50 (216) 4.33 (110) (316) 5.20 (132) (263) 4.41 (112) 6V (261) 4.09 (104) 8.82 (224) 4.33 (110) (292) 4.49 (114) 9.37 (238) 4.33 (110) (314) 4.80 (122) 9.80 (249) 4.41 (112) (355) 5.39 (137) (266) 4.41 (112) (371) 5.63 (143) (275) 4.41 (112) 21

21 Variable Displacement otor 6V (6V) efore finalising your design, please request a certified drawing. Unit Dimensions, Size 28 (ISO-Version) Hydraulic control, pilot pressure related HD1, HD2 Hydraulic two-position control HZ (125) 4.65 (118) (11) 4.65 (118) DI (ø100-0,022) ø2.44 (ø62) 1.02 (26) 0.63 (16) 8.35 (212) 7.36 (187) 7.24 (184) 6.06 (154) 2.60 (66) 2.28 (58) T U T 0.94 (23,8) 0.35 (9) 2.28 (58) 0.98 (25) 5.39 (137) 0.75 (19) (50,8) 0.79 (20) 1.06 (27) 3.62 (92) 10; 0.67 (17) deep 4.33 (110) 4.69 (119) 5.35 (136) Z Service line ports / at rear end (01) Service line ports / on (opposite) sides (02) 1.36 (34,5) 1.36 (34,5) 2.00 (50,8) 0.75 (19) 10; 0.67 (17) deep 0.94 (23,8) 1.77 (45) 5.75 (146) 1.77 (45) (132) 1 Shaft ends Z Splined shaft,din 5480 Splined shaft, DIN 5480 W 30x2x30x14x9g W 25x1,25x30x18x9g (22) 1.38 (35) R0.06 (R1,6) ø0.97 (ø24,6) 0.31 (8) (19) 1.69 (43) R 0.05 (R 1,2) ø0.85 (ø21,6) 0.59 (15) Connections, Service line ports SE 3/4" 6000 psi (420 bar) high pressure series Port for synchronous control of 14x1,5 a number of units and for remote control pressure (plugged) Pilot pressure port 14x1,5 T Case drain ports 18x1,5 U Flushing port (plugged) 16x1,5 1 Test port for control pressure (plugged) 14x1,5 22

22 Variable Displacement otor 6V (6V) Unit Dimensions, Size 55 (SE Version) Hydraulic control, pilot pressure related HD1, HD (20) (7) 0.31 (7,9) 8.15 (207) 3.58 (91) R /08.97 efore finalising your design, please request a certified drawing (262) 9.25 (235) 6.38 (162) 5.75 (146) 0.56 (14,3) 5.75 (146) DI (ø127-0,05) ø4.37 (ø111) 0.50 (12,7) 3.58 (91) 3.90 (99) 7.24 (184) 0.94 (23,8) 0.75 (19) 2.00 (50,8) 0.94 (24) 3/8-16UNC (21) deep 3.66 (93) 4.37 (111) 5.31 (135) 6.94 (151) Service line ports / at rear end (51) 1.36 (34,5) Service line ports / on (opposite) sides (52) 1.36 (34,5) 2.00 (50,8) 0.75 (19) 3/8-16UNC (21) deep 0.94 (23,8) (54) (54) 6.54 Shaft end (166) S Splined shaft, SE 1 1/4" 14 T, 12/24 DP, Tolerance class 5 NSI 92.1a /16-14UNC (28) 0.31 (8) 1.89 (48) R0.06 (R1,6) ø1.02 (ø25,8) 5.98 (152) Connections, Service line ports SE 3/4" 6000 psi (420 bar) high pressure series Port for synchronous control of SE 6, 9/16-18UNF-2 a number of units and for remote control pressure (plugged) Pilot pressure port SE 6, 9/16-18UNF-2 T Case drain ports SE 12, 1 1/16-12UN-2 U Flushing port (plugged) SE 10, 7/8-14UNF-2 1 Test port for control pressure (plugged) SE 6, 9/16-18UNF-2 23

23 Variable Displacement otor 6V (6V) Unit Dimensions, Size 80 (SE Version) Hydraulic control, pilot pressure related HD1, HD (213) 0.91 (23) 0.28 (7) 0.31 (7,9) efore finalising your design, please request a certified drawing (293) (262) 9.13 (232) 3.94 (100) 7.13 (181) 0.69 (17,5) 6.22 (158) DI (ø127-0,05) ø4.33 (ø110) 0.50 (12.7) 3.94 (100) 4.25 (108) 8.15 (207) 1.09 (27,8) 0.98 (25) 2.25 (57,2) 3.78 (96) 1.10 (28) 7/16-14UNC (22) deep 4.57 (116) 5.91 (150) 6.57 (167) Service line ports / at rear end (51) Service line ports / on (opposite) sides (52) 1.40 (35,5) 1.40 (35,5) 2.25 (57,2) 0.98 (25) 7/16-14UNC (22) deep Shaft end S Splined Shaft, SE 1 1/4" 14 T, 12/24 DP, Tolerance class 5 NSI 92.1a /16-14UNC (28) 0.31 (8) 1.89 (48) 1.09 (27,8) R0.06 (R1,6) ø1.02 (ø25,8) 2.13 (54) 6.85 (174) 2.13 (54) 6.30 (160) Connections, Service line ports SE 1" 6000 psi (420 bar) high pressure series Port for synchronous control of SE 6, 9/16-18UNF-2 a number of units and for remote control pressure (plugged) Pilot pressure port SE 6, 9/16-18UNF-2 T Case drain ports SE 12, 1 1/16-12UN-2 U Flushing port (plugged) SE 10, 7/8-14UNF-2 1 Test port for control pressure (plugged) SE 6, 9/16-18UNF-2 24

24 Variable Displacement otor 6V (6V) Unit Dimensions, Size 107 (SE Version) Hydraulic control, pilot pressure related HD1, HD (25) 0.28 (7) 0.31 (7,9) (322) (290) 9.92 (252) 4.33 (110) R /08.97 efore finalising your design, please request a certified drawing (228,6) 7.87 (200) 0.81 (20,6) 7.87 (200) DI (ø152,4-0,05) ø5.35 (ø136) 0.50 (12,7) 4.33 (110) 4.65 (118) 8.94 (227) 1.09 (27,8) 0.98 (25) 2.25 (57,2) 7/16-14UNC (22) deep 1.18 (30) 3.98 (101) 4.80 (122) 6.18 (157) 6.89 (175) Service line ports / at rear end (51) Service line ports / on (opposite) sides (52) 1.59 (40,5) 1.59 (40,5) Shaft end S Splined shaft, SE 1 3/4" 13 T, 8/16 DP, Tolerance class 5 NSI 92.1a /8-11UNC (36) 0.47 (12) 2.64 (67) 7/16-14UNC (22) deep R0.1 (R2,5) 2.25 (57,2) ø1.42 (ø36) 0.98 (25) 1.09 (27,8) (65) (65) 7.72 (196) 7.09 (180) Connections, Service line ports SE 1" 6000 psi (420 bar) high pressure series Port for synchronous control of SE 6, 9/16-18UNF-2 a number of units and for remote control pressure (plugged) Pilot pressure port SE 6, 9/16-18UNF-2 T Case drain ports SE 12, 1 1/16-12UN-2 U Flushing port (plugged) SE 10, 7/8-14UNF-2 1 Test port for control pressure (plugged) SE 6, 9/16-18UNF-2 25

25 Variable Displacement otor 6V (6V) efore finalising your design, please request a certified drawing. Unit Dimensions, Size 140 (ISO Version) Hydraulic control, pilot pressure related HD1, HD2 Hydraulic two-position control HZ (40) 1.10 (28) (322) (289) 9.72 (247) 3.94 (100) 3.62 (92) U T 8.82 (224) 8.27 (210) 0.69 (17.5) 8.27 (210) DI (ø180-0,025) ø3.70 (ø94) T 0.39 (10) 3.62 (92) 1.54 (39) 8.74 (222) 1.26 (32) 1.30 (33) 2.63 (66,7) 14; (19) deep (31,8) (42) 4.29 (109) 5.20 (132) 6.89 (175) 7.68 (195) Z Service line ports / at rear end (01) Service line ports / on (opposite) sides (02) 1.5 (40,5) 1.59 (40,5) 2.63 (66,7) 1.26 (32) 14; 0.75 (19) deep Shaft end Z Splined shaft, DIN 5480 W 45x2x30x21x9g 1.25 (31,8) (36) R0.1 (R2,5) 0.31 (8) 1.97 (50) (76) (76) 8.90 (226) ø1.60 (ø39,6) (204) 1 Connections, Service line ports SE 1 1/4" 6000 psi (420 bar) high pressure series Port for synchronous control of 14x1,5 a number of units and for remote control pressure (plugged) Pilot pressure port 14x1,5 T Case drain ports 26x1,5 U Flushing port (plugged) 22x1,5 1 Test port for control pressure (plugged) 14x1,5 26