APM212 Gear Motors, including Fan Drive Gear Motors

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1 Gear Motors, including Fan Drive Gear Motors Standard and Low Noise series Reference: 2-P EN-3 Issue: /56

2 Contents Page 1 General information External gear motors for general use Fan Drive Gear Motors for cooling systems External gear motors components Example of typical sound pressure level recorded in a semi-anechoic testing room Technical data High inlet pressure Identifying the rotation direction Outlet Radial and axial load Application check General installation precaution Directives and standards Non-standard symbols used in the text Gear motor formulas Diagrams Overview standard types (General use) Standard configuration customised versions (General use or cooling system) Customised versions order example Single motor dimensions Shaft end code Front cover Body Back covers Valve and circuits Accessories Electronic module, ESLF series External manifold for reversing control, STB series Product identification plate Application form /56

3 1 General information External gear motors are widely used in modern hydraulic systems due to their high performance, long service life and low maintenance costs. With the new family, high operating pressures, excellent volumetric and mechanical efficiencies were achieved; moreover, for LN series (Low Noise versions), definitely better acoustic performances were obtained. Different features of the new APM design were deeply analyzed and studied in order to get to the above mentioned results; primarily, engineering attention was focused on the design of the gear teeth and balancing areas but also materials, heat treatments and coupling tolerances were carefully considered during the development process; these project variables linked to a continuous tight test schedule (even performed in our semi anechoic room) were the tools adopted by Bucher to achieve the excellent performance of these gear motors. Bucher Hydraulics philosophy is based on continuous improving; this concept is enforced by high end control and manufacturing techniques in Production and by a Quality Control System which guarantees that every single product can offer the same high standard level. 1.1 External gear motors for general use Hydraulic scheme example M New motors benefits - High hydraulic and mechanical efficiencies - Able to withstand high pressure - Long life due to optimised materials used - Low Noise and vibration features available also in standard version - Low Noise motors with new gears profile available outrigger bearing available Examples of typical applications Pavers/Roller tandem Spreader 3/56

4 1.2 Fan Drive Gear Motors for cooling systems In the Fan Drive Gear Motors for cooling systems we implemented the shaft seal protection adding a dedicated sealing. Consequently, dedicated cast iron front covers have been designed. See section Dedicated front cover with additional dust protection New motors benefits - Improve machine operating efficiency - Reduce the costs of maintenance - Reduce noise and vibrations - Allow to integrate hydraulic values circuit - Electronic control available Examples of typical applications Telehandler Snow-cat Large Wheel loader Hydraulic scheme examples M M 4/56

5 1.3 External gear motors components Retaining ring 2. Shaft seal ring support 3. Shaft seal 4. Front cover 5. Back up seal 6. Balancing seal 7. Balancing block 8. Take off power gear 9. Gear 1. Oil seal 11. Centering pin 12. Motor body 13. Back cover 14. Fixing screw and washer Improvements (New vs APM2) Front covers : In addition to aluminium versions, complete new range of cast iron front covers Balancing blocks : New generation optimised and standardised balancing blocks Gears : New gears profile (12 teeth) and increased transmissible torque Bodies: New design pump bodies Back covers : Wide range of aluminium and cast iron back covers with/ without integrated cartridge valves Seals : As general rule, shaft seal (Pos.3), balancing seals (Pos.6) and body oil seals (Pos.1) are in HNBR material. 5/56

6 APM2 LN Ø 12 = number of new optimised teeth Ø18 Ø2 Ø2 H = H = 21 H = 21 Measurements in mm optimised balancing H area with higher performance materials APM2 Standard gear motor Gear motor Low Noise gear motor Time Pulsation Pulsation reduced Time/2 Pulsation/4-75% 1.4 Example of typical sound pressure level recorded in a semi-anechoic testing room 7 Noise reduction effects LAeq [db(a)] APM2/15 /15 /15LN Pressure [bar] Oil temperature: 4 C - Oil viscosity: 32 mm 2 /s Distance between motor and sensor: 1 m 6/56

7 1.5 Technical data Operating fluid temperature range (mineral oil): Recommended fluids Viscosity range: Features NBR HNBR Recommended Permitted Permitted for starting -15 / +8 C (peak: -2 / +9 C) -2 / +9 C (peak: -3 / +11 C) hydraulic mineral oil-based 2-12 mm 2 /s (cst) 12-7 mm 2 /s (cst) 2 mm 2 /s (cst) Cleanliness: recommended up to 14 bar (2 PSI) recommended up to 21 bar (3 PSI) recommended up to 275 bar (4 PSI) 2/18/15 ISO /17/14 ISO /15/12 ISO 446 Minimum storage temperature: Standard seals material (valves not included) NBR HNBR -25 C -35 C NBR + HNBR standard ( ISO1629) Type APM/APMR212 Displacement cm 3 /rev Cu.In. P.R. APM/ APMR212LN Displacement cm 3 /rev Cu.In. P.R. Max. pressure* P1 P3 (continuous) (peak) bar P.S.I. bar P.S.I. n min. P2 < 1 bar rpm n min. 1<n<1 8 bar rpm n min. 18<n< P2 rpm n max. rpm 6.5 Potentially available depending on working conditions. Please consult Bucher Hydraulics ** ** * Referred to motors with flanged ports. Utilising threaded ports, please to consider a significantly de-rated performances. The mechanical stress localised on threaded ports cause a reduced motor life performances ** Obtained with a specific balancing plate IMPORTANT!: Please consult Bucher Hydraulics if even one of the operating limits indicated in the table (temperature, pressure, rpm) is exceeded, as well as in the case of two or more maximum values at the same time, or for applications with particularly heavy-duty cycles 1.6 High inlet pressure Pressure levels: P1 = continuous pressure P3 =max peak pressure Application of motor operating at a high number of load cycles has to be submitted to our approval. p (bar) P3 P1 t (s) 7/56

8 1.7 Identifying the rotation direction The rotation direction of a gear motor is identified by looking at the motor from the front and with the drive gear turned upwards (see figures below). Motors with clockwise rotation (D) have a drive gear which turns clockwise, with the inlet port on the left and the outlet port on the right. Motors with counterclockwise rotation (S) have a drive gear which turns counterclockwise, with the inlet port on the right and the outlet port on the left. The figure also shows the pressure flow inside the motors as the oil is transferred from the inlet port to the outlet port. As regards reversible motors (R), the ports are alternatively for inlet and outlet. Motors with a unidirectional rotation (D or S) have the denomination APM. Motors with reversible rotation have the denomination APMR. Motors with Low Noise components have the denomination LN. D S R Inlet Outlet Outlet Inlet Inlet Outlet Outlet Inlet Right-hand rotation Left-hand rotation Reversible rotation 1.8 Outlet Unidirectional motors As a matter of principle, unidirectional motors correspond to counter rotating pumps. The balancing seals are not symmetric and, consequently, two different pressure sides: inlet High-pressure and outlet Low-pressure side, which must not be exchanged each other, are defined. The outlet Low-pressure side loads the back side of the oil retaining shaft seal, a dedicated steel ring for supporting it, is adopted. The maximum outlet Low-pressure value is limited by the shaft seal and its support, see limit indications, page 1/56 To keep P out below the suggested value, the following must be avoided: - long distance between motor and tank - long stretches of piping - special features such as: bends; reductions in diameter; quick couplings; etc. Having filtration on the return it is also advisable to choose a filter of a suitable size to minimise any pressure drop and to take measures to prevent gradual clogging over time. p OUT p IN Vc Q T, n N (T, n) Reversible motors Reversible rotating motors have symmetric balancing seals and both port, inlet and outlet, can be, alternatively, operate as inlet High-pressure and outlet Low-pressure port. A sealed area is connected to the back side of the oil retaining shaft seal and its pressure must be limited connecting it to the tank, through a drain threaded port, which is generally, placed on the motor rear cover. The drain hose must be chosen in order to avoid that the pressure at the drain port does not exceed the maximum admitted pressure, see limit indications, page 1/56. p OUT p IN Vc p DRAIN Q T, n N (T, n) 8/56

9 1.9 Radial and axial load Standard version Bucher gear motors are suitable to work also when radial and axial loads are applied to it. In order to guarantee the correct life of the hydraulic motor, it is necessary to let the component work within the limits indicated in the table below: Radial load Axial load 1 N 5 N Bearing front cover support High values of radial and axial loads can cause the wear of the motor internal components; as a consequence, motor performance and life can be dramatically reduced. Bucher Hydraulics studied special front covers having a bearing on board which allow the motor to tolerate loads higher than the previous ones shown in When the hydraulic motor is assembled in an application using a coupling, the joint must be able to absorb any discrepancies in the coaxial alignement of the gear motor driven shaft without applying any loads on the motor shaft. In the coupling between splined shafts, the connection sleeve must be free to move along its axis; the lenghth of What shown must be considered the worst load conditions which our motors have to submit to. Radial load: the maximum admissible radial loads must be calculated considering both the fan weight and the unbalanced mass. Axial load: the limits of axial loads apply to both directions (in inwards and in outwards). When radial and/or axial loads exceed the above stated values, a front bearing support must be adopted. this sleeve must be sufficient to fully cover the splined sections of the motor driven shaft in any of its positions. A clearance between shaft ends is necessary. It s important to check that the spline coupling is reasonably lubricated allowing its protection against a rapid deterioration. Should any radial and/or axial loads be applied to the take off shaft (e.g. when it is coupled to a V belt and pulley or to a pair of gear wheels), a front cover with supporting bearings. Depending on the motor model, these supports can replace the front cover of the motor or can be fitted in addition to it (assembling it on the front cover itself). Fa (N) Maximum Axial force admitted with radial load lesser than 1 N rpm Application check In order to extend the life of the gear motor (which depends on motor speed, system pressure, and other system parameters), Bucher Hydraulics strongly recommends the following actions: - Perform a prototype testing programme in order to check its functionality and its behaviour with the machine which will be equipped with this component. - Avoid cavitation; every action which reduces the quantity of air trapped in the system is worth to extend all system components life. - A maintenance of the fluid and of the filtering system has to be regularly accomplished. A clean fluid can extend the life of the system reducing its consequent failures. Before to introduce the motor into the machine it is necessary to check if the application match the motor specifications. In particular: 1. Pressure limits It is important to remain inside the catalogue limits as P1 (continuous ) and P3 (peak) see section Return line and/or case drain line The case drain line must be connected directly to tank if possible using a dedicated connection. The connection size should be dimensioned with appropriated internal passage in order to maintain as low as possible the pressure inside. The max allowed pressure depending on the speed and the viscosity. See limits indications, page 1/56 9/56

10 Limit indications: Shaft seal: Maximum pressure admitted IMPORTANT! The pressure on the outlet line has to be checked in order to choice the right motor configuration. Different solutions are available depending on pressure value recorded. See examples from 1 to 4 Pressure These limits have to be respected in the worst working conditions [bar] L H [rpm] Speed Shaft seal 1 Unidirectional motor APM IN IN L Standard shaft seal OUT Outlet pressure must be remain inside L area OUT 2 Bidirectional motor used in only one direction IN DRAIN Unidirectional motor with drain line (drain pressure must be remain inside L area) IN L H Standard shaft seal OUT OUT 3 Unidirectional motor APM IN IN H High back pressure shaft seal OUT OUT ATTENTION! High back pressure seal The seal life is limited if compared to the standard one. Recommended for seasonal machines applications with a maximum of about 4 working hours per year. 4 Bidirectional motor APMR DRAIN Drain pressure must be IN/OUT remain inside L area IN/OUT DRAIN IN/OUT Standard shaft seal L IN/OUT H 1/56

11 1.11 General installation precaution In addition to the recommendations regarding fluids, filtration, coupling, etc., we suggest the following: - For unidirectional motors check always the rotation direction of the motor's take off shaft; it must be compatible with the rotation direction of the motor itself. - Be particularly careful in cleaning and make sure, when connecting the high and low pressure piping, that no chips, rag threads, teflon tape, etc. get into the motor circulation system. - Check the tightness of the high and low pressure fittings, the correct positioning of the O-Ring, and make sure there is no dirt between the flange and the motor body. - To ensure the best heat distribution inside the tank, Example of several hydraulic circuits available: make sure the return pipe is not too close to the pump's suction piping. The pipes themselves should be below oil tank level to prevent the formation of foam. - Do not subject the motors to operating conditions different from those indicated on section 1.5 ; for extreme operations, always contact our Technical Department. - Never use fluids different from those indicated in section Ambient temperature range: -2 / +5 C - In the event of motor painting, do not use solvents or paints that are incompatible with the material of the seals. Do not bake paint with excessively high temperatures. Unidirectional motor with/ without anticavitation valve Unidirectional motor with antishock/anticavitation valve Unidirectional motor with proportional and anticavitation valves M M M Bidirectional motor with relief valve ON-OFF and double anticavitation valves Bidirectional motor external manifold Bidirectional proportional control + ON-OFF revers valve ON-OFF M M M 11/56

12 1.12 Directives and standards - Atex: Attention: The equipment and protective systems of this catalogue ARE NOT intended for use in potentially explosive atmospheres. Ref: Directive 99/92/EC and Directive 214/34/UE - ISO 91:28 / ISO 141:24 Bucher Hydraulics S.p.A. is certified for research, development and production of directional control valves, power units, gear pumps and motors, electro pumps, cartridge valves and integrated manifolds for hydraulic applications Non-standard symbols used in the text Check nut Hexagonal-head screw ( TE screw) O-Ring Lock washer Socket head screw (TCE screw) Woodruff key 4 11 Dynamometric spanners Gear motor standard configuration: materials indication Square key 1.14 Gear motor formulas The following parameters are defined: Vc = (cm 3 /r) motor displacement; n = (r/min) no. of rpm of the outlet shaft; Q = (l/min) flow rate; p = (bar) P IN -P OUT, operating p pressure; T = (Nm) outlet torque; N = (kw) outlet power; v = (%) volumetric efficiency; m = (%) mechanical efficiency; t = (%) total efficiency (η t = η v η m ) Parameter relationships Q Δp Q Δp η v η m η t n T N p OUT p IN Q p OUT p IN Q T, n p DRAIN Vc T, n Vc N (T, n) N (T, n) Q = Vc = n = Vc n T p = 1 η v Vc η m Q T η Vc = n v p η m Q Q p η N = Vc v T = Vc p η m η t Example /11 Vc= 11.1 cm3/r Q IN = 18.5 l/min p=2 bar ηv= 9% ηm= 9% n = 9 = 15 r/min. ηt =.9.9 =.81 = 81% 11.1 N = = 5. kw T = = 31.8 Nm 12/56

13 1.15 Diagrams Oil viscosity: 37 mm 2 /s Oil temperature: 4 C /26 p= 2 bar /26 p= 2 bar /22 p= 2 bar /22 p= 2 bar /19 p= 2 bar /19 p= 2 bar /15 p= 2 bar /15 p= 2 bar Q [l/min] 4 3 /11 p= 2 bar /11 p= 2 bar /8.5 p= 2 bar /8.5 p= 2 bar n [r/min] 18 /8,5 Δp=275 bar /11 Δp=275 bar Δp=2 bar Δp=25 bar 32 Δp=275 bar 28 Δp=25 bar Δp=2 bar Δp=25 bar P [KW] Δp=15 bar Δp=1 bar Δp=5 bar 24 Δp=2 bar M [Nm] Δp=15 bar 12 Δp=1 bar 8 P [KW] Δp=15 bar Δp=1 bar Δp=5 bar 32 Δp=275 bar Δp=25 bar Δp=2 bar 2 Δp=15 bar 16 Δp=1 bar M [Nm] 2 Δp=5 bar 4 2 Δp=5 bar n [r/min] n [r/min] 13/56

14 21 /15 Δp=27 bar 7 21 /19 7 Δp=27 bar Δp=25 bar Δp=25 bar Δp=25 bar 18 Δp=25 bar 6 18 Δp=2 bar Δp=2 bar 6 Δp=2 bar 15 Δp=2 bar P [KW] 12 9 Δp=15 bar Δp=1 bar Δp=15 bar 4 3 Δp=1 bar M [Nm] P [KW] 12 9 Δp=15 bar Δp=1 bar Δp=15 bar Δp=1 bar M [Nm] Δp=5 bar Δp=5 bar 1 Δp=5 bar 3 Δp=5 bar n [r/min] 1 n n [r/min] /22 / Δp=2 bar 8 21 Δp=2 bar Δp=22 bar Δp=22 bar 7 Δp=2 bar 21 Δp=2 bar Δp=15 bar 6 15 Δp=15 bar Δp=15 bar 5 15 Δp=15 bar 5 P [KW] 12 9 Δp=1 bar Δp=1 bar M [Nm] P [KW] 12 9 Δp=1 bar Δp=1 bar M [Nm] 6 Δp=5 bar Δp=5 bar 2 Δp=5 bar 6 Δp=5 bar n [r/min] n [r/min] 14/56

15 2 Overview standard types (General use) This motors configuration are considered as standard S 88 Example European 4 bolt 2 European rectangular (Ø 36.5 mm ) Tapered 1 shaft 1:8 1: For each series in the next pages are indicated front, rear cover, and seals materials. Ordering these series motors it is enought to indicate motor description, in example /8.5 D 218. For different (other) configurations, or combination of different features,example port threads, front flange materials etc, it is possible to utilise the description configurator shown at section Standard configuration Port type Aluminium front cover type Drive shaft European 4 bolt flanged 2 European rectangular (Ø 36.5 mm ) 1 Tapered shaft 1:8 1:8 8 German 4 bolt flanged 2 German rectangular (Ø 8 mm inches) 2 Tapered shaft 1:5 1:5 5 BSPP Threaded ports 8 Through 2 bolts (Ø 5 mm ) 3 9 teeth external spline B17X14 DIN SAE 8 Through 2 bolts (Ø 5 mm ) 4 9 teeth external spline SAE J 498-9T 16/32 DP 7S NPTF Threaded ports 8 SAE-A 2 bolts (Ø mm inches) 8 Straight keyed Ø 15,85 mm -.62 inches 15/56

16 Serie page Serie page Serie page S /56

17 APM APMR ED A Serie Gear motor material Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR ø F Depth Shaft max torque: see section 3.3 Tightening torque: see section d D B h ø M12x1,5 ø DIA Taper 1:8 ø36.5 f DIA Nm Reversible motor ED - External Drain /4 BSP Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X M8X M8X Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 218 /8.5LN D 218 /8.5 S 218 /8.5LN S 218 APMR212/8.5 ED 218 APMR212/8.5LN ED 218 /11 D 218 /11LN D 218 /11 S 218 /11LN S 218 APMR212/11 ED 218 APMR212/11LN ED 218 /15 D 218 /15LN D 218 /15 S 218 /15LN S 218 APMR212/15 ED 218 APMR212/15LN ED 218 /19 D 218 /19LN D 218 /19 S 218 /19LN S 218 APMR212/19 ED 218 APMR212/19LN ED 218 /22 D 218 /22LN D 218 /22 S 218 /22LN S 218 APMR212/22 ED 218 APMR212/22LN ED 218 /26 D 218 /26LN D 218 /26 S 218 /26LN S 218 APMR212/26 ED 218 APMR212/26LN ED /56

18 APM APMR ED Serie 818 A B ø M12x1.5 ø 36.5 f Gear motor material ø G Inlet - Outlet ø DIA Taper 1:8 19 Nm Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section h Reversible motor ED - External Drain /4 BSP Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B G G LN mm inch mm inch BSPP BSPP / /2 3/ /4 1/ Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 818 /8.5LN D 818 /8.5 S 818 /8.5LN S 818 APMR212/8.5 ED 818 APMR212/8.5LN ED 818 /11 D 818 /11LN D 818 /11 S 818 /11LN S 818 APMR212/11 ED 818 APMR212/11LN ED 818 /15 D 818 /15LN D 818 /15 S 818 /15LN S 818 APMR212/15 ED 818 APMR212/15LN ED 818 /19 D 818 /19LN D 818 /19 S 818 /19LN S 818 APMR212/19 ED 818 APMR212/19LN ED 818 /22 D 818 /22LN D 818 /22 S 818 /22LN S 818 APMR212/22 ED 818 APMR212/22LN ED 818 /26 D 818 /26LN D 818 /26 S 818 /26LN S 818 APMR212/26 ED 818 APMR212/26LN ED /56

19 APM APMR ED Serie F Depth A B ø16 DIN DIA.6 M12X1.5 ø 8 e DIA ø9 Gear motor material.354 d D ø DIA Taper 1: Nm h Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section M12X1.5 Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X1 Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 225 /8.5LN D 225 /8.5 S 225 /8.5LN S 225 APMR212/8.5 ED 225 APMR212/8.5LN ED 225 /11 D 225 /11LN D 225 /11 S 225 /11LN S 225 APMR212/11 ED 225 APMR212/11LN ED 225 /15 D 225 /15LN D 225 /15 S 225 /15LN S 225 APMR212/15 ED 225 APMR212/15LN ED 225 /19 D 225 /19LN D 225 /19 S 225 /19LN S 225 APMR212/19 ED 225 APMR212/19LN ED 225 /22 D 225 /22LN D 225 /22 S 225 /22LN S 225 APMR212/22 ED 225 APMR212/22LN ED 225 /26 D 225 /26LN D 225 /26 S 225 /26LN S 225 APMR212/26 ED 225 APMR212/26LN ED /56

20 APM APMR ED Serie F Depth A B ø 16.5 h DIA ø 8 e ø DIA Gear motor material d D B 17X14 DIN Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section Reversible motor ED - External Drain M12X1.5 Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X1 Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 227 /8.5LN D 227 /8.5 S 227 /8.5LN S 227 APMR212/8.5 ED 227 APMR212/8.5LN ED 227 /11 D 227 /11LN D 227 /11 S 227 /11LN S 227 APMR212/11 ED 227 APMR212/11LN ED 227 /15 D 227 /15LN D 227 /15 S 227 /15LN S 227 APMR212/15 ED 227 APMR212/15LN ED 227 /19 D 227 /19LN D 227 /19 S 227 /19LN S 227 APMR212/19 ED 227 APMR212/19LN ED 227 /22 D 227 /22LN D 227 /22 S 227 /22LN S 227 APMR212/22 ED 227 APMR212/22LN ED 227 /26 D 227 /26LN D 227 /26 S 227 /26LN S 227 APMR212/26 ED 227 APMR212/26LN ED 227 2/56

21 APM APMR ED A Serie F Depth B ø16 DIN DIA M12X1.5 ø 5 f DIA X Gear motor material ø DIA 8.32" d D X ø17.67 DIA Taper 1: Nm h Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section Nm M1x1.5 DIN931 (1.9) Tightening torque: see section M12X1.5 Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X1 Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 235 /8.5LN D 235 /8.5 S 235 /8.5LN S 235 APMR212/8.5 ED 235 APMR212/8.5LN ED 235 /11 D 235 /11LN D 235 /11 S 235 /11LN S 235 APMR212/11 ED 235 APMR212/11LN ED 235 /15 D 235 /15LN D 235 /15 S 235 /15LN S 235 APMR212/15 ED 235 APMR212/15LN ED 235 /19 D 235 /19LN D 235 /19 S 235 /19LN S 235 APMR212/19 ED 235 APMR212/19LN ED 235 /22 D 235 /22LN D 235 /22 S 235 /22LN S 235 APMR212/22 ED 235 APMR212/22LN ED 235 /26 D 235 /22LN D 235 /26 S 235 /26LN S 235 APMR212/26 ED 235 APMR212/26LN ED /56

22 APM APMR ED F Depth A B ø16 DIN6888 M12X DIA ø 5 f DIA Serie X ø DIA Gear motor material 8.32" d D X ø17.67 DIA Taper 1: Nm Reversible motor ED - External Drain 3 h Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section Nm M1x1.5 DIN931 (1.9) Tightening torque: see section M12X1.5 Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X1 Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 245 /8.5LN D 245 /8.5 S 245 /8.5LN S 245 APMR212/8.5 ED 245 APMR212/8.5LN ED 245 /11 D 245 /11LN D 245 /11 S 245 /11LN S 245 APMR212/11 ED 245 APMR212/11LN ED 245 /15 D 245 /15LN D 245 /15 S 245 /15LN S 245 APMR212/15 ED 245 APMR212/15LN ED 245 /19 D 245 /19LN D 245 /19 S 245 /19LN S 245 APMR212/19 ED 245 APMR212/19LN ED 245 /22 D 245 /22LN D 245 /22 S 245 /22LN S 245 APMR212/22 ED 245 APMR212/22LN ED 245 /26 D 245 /26LN D 245 /26 S 245 /26LN S 245 APMR212/26 ED 245 APMR212/26LN ED /56

23 APM APMR ED Serie F Depth 13 A B ø16.5h DIA ø5 f DIA X B 17X14 DIN 5482 Gear motor material ø DIA 8.32" d D X Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section M1x1.5 DIN931 (1.9) Nm M12X1.5 Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X1 Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 237 /8.5LN D 237 /8.5 S 237 /8.5LN S 237 APMR212/8.5 ED 237 APMR212/8.5LN ED 237 /11 D 237 /11LN D 237 /11 S 237 /11LN S 237 APMR212/11 ED 237 APMR212/11LN ED 237 /15 D 237 /15LN D 237 /15 S 237 /15LN S 237 APMR212/15 ED 237 APMR212/15LN ED 237 /19 D 237 /19LN D 237 /19 S 237 /19LN S 237 APMR212/19 ED 237 APMR212/19LN ED 237 /22 D 237 /22LN D 237 /22 S 237 /22LN S 237 APMR212/22 ED 237 APMR212/22LN ED 237 /26 D 237 /26LN D 237 /26 S 237 /26LN S 237 APMR212/26 ED 237 APMR212/26LN ED /56

24 APM APMR ED Serie F Depth 13 A B ø16.5h DIA ø5 f DIA X B 17X14 DIN 5482 ø DIA Gear motor material 8.32" d D X Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section Nm To utilize M1x1.5 DIN931 (1.9) M12X1.5 Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X1 Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 247 /8.5LN D 247 /8.5 S 247 /8.5LN S 247 APMR212/8.5 ED 247 APMR212/8.5LN ED 247 /11 D 247 /11LN D 247 /11 S 247 /11LN S 247 APMR212/11 ED 247 APMR212/11LN ED 247 /15 D 247 /15LN D 247 /15 S 247 /15LN S 247 APMR212/15 ED 247 APMR212/15LN ED 247 /19 D 247 /19LN D 247 /19 S 247 /19LN S 247 APMR212/19 ED 247 APMR212/19LN ED 247 /22 D 247 /22LN D 247 /22 S 247 /22LN S 247 APMR212/22 ED 247 APMR212/22LN ED 247 /26 D 247 /26LN D 247 /26 S 247 /26LN S 247 APMR212/26 ED 247 APMR212/26LN ED /56

25 APM APMR ED A B Serie 887S ø DIA ø DIA SAE J 498-9T /32 DP G.25 FLAT ROOT SIDE FIT 3.43 CLASS 1 FIT Gear motor material Inlet - Outlet Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Type Displacement cm 3 /rev Shaft max torque: see section 3.3 Tightening torque: see section /16 2UNF Depth Dimensions Outlet Inlet A B G G LN mm inch mm inch UNF UNF /16 12 (SAE12) 7/8 14 (SAE1) Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 887S /8.5LN D 887S /8.5 S 887S /8.5LN S 887S APMR212/8.5 ED 887S APMR212/8.5LN ED 887S /11 D 887S /11LN D 887S /11 S 887S /11LN S 887S APMR212/11 ED 887S APMR212/11LN ED 887S /15 D 887S /15LN D 887S /15 S 887S /15LN S 887S APMR212/15 ED 887S APMR212/15LN ED 887S /19 D 887S /19LN D 887S /19 S 887S /19LN S 887S APMR212/19 ED 887S APMR212/19LN ED 887S /22 D 887S /22LN D 887S /22 S 887S /22LN S 887S APMR212/22 ED 887S APMR212/22LN ED 887S /26 D 887S /26LN D 887S /26 S 887S /26LN S 887S APMR212/26 ED 887S APMR212/26LN ED 887S 25/56

26 APM APMR ED Serie A B X18 DIN x.78 ø DIA ø DIA Gear motor material G Inlet - Outlet ø Reversible motor ED - External Drain 1/4-28 UNF Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section /16 2UNF Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B G G LN mm inch mm inch UNF UNF /1 12 SAE126 7/8 14 SAE1 Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D 88 /8.5LN D 88 /8.5 S 88 /8.5LN S 88 APMR212/8.5 ED 88 APMR212/8.5LN ED 88 /11 D 88 /11LN D 88 /11 S 88 /11LN S 88 APMR212/11 ED 88 APMR212/11LN ED 88 /15 D 88 /15LN D 88 /15 S 88 /15LN S 88 APMR212/15 ED 88 APMR212/15LN ED 88 /19 D 88 /19LN D 88 /19 S 88 /19LN S 88 APMR212/19 ED 88 APMR212/19LN ED 88 /22 D 88 /22LN D 88 /22 S 88 /22LN S 88 APMR212/22 ED 88 APMR212/22LN ED 88 /26 D 88 /26LN D 88 /26 S 88 /26LN S 88 APMR212/26 ED 88 APMR212/26LN ED 88 26/56

27 APM APMR ED A B Serie ø DIA ø DIA Gear motor material SAE J 498-9T /32 DP G.25 FLAT ROOT SIDE FIT CLASS 1 FIT 3.43 Inlet - Outlet Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section /16 2UNF Depth Displacement Dimensions Outlet Inlet Type cm 3 /rev A B G G LN mm inch mm inch NPTF NPTF /2 1/ /4 1/ Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D /8.5LN D /8.5 S /8.5LN S APMR212/8.5 ED APMR212/8.5LN ED /11 D /11LN D /11 S /11LN S APMR212/11 ED APMR212/11LN ED /15 D /15LN D /15 S /15LN S APMR212/15 ED APMR212/15LN ED /19 D /19LN D /19 S /19LN S APMR212/19 ED APMR212/19LN ED /22 D /22LN D /22 S /22LN S APMR212/22 ED APMR212/22LN ED /26 D /26LN D /26 S /26LN S APMR212/26 ED APMR212/26LN ED 27/56

28 APM APMR ED A B Serie 4X18 DIN6885 ø x DIA ø DIA Gear motor material Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR G Inlet - Outlet Shaft max torque: see section 3.3 Tightening torque: see section ø /4-28 UNF Reversible motor ED - External Drain 7/16 2UNF Depth Displacement Dimensions Outlet Inlet Type cm 3 /rev A B G G LN mm inch mm inch NPTF NPTF /2 1/ /4 1/ Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D /8.5LN D /8.5 S /8.5LN S APMR212/8.5 ED APMR212/8.5LN ED /11 D /11LN D /11 S /11LN S APMR212/11 ED APMR212/11LN ED /15 D /15LN D /15 S /15LN S APMR212/15 ED APMR212/15LN ED /19 D /19LN D /19 S /19LN S APMR212/19 ED APMR212/19LN ED /22 D /22LN D /22 S /22LN S APMR212/22 ED APMR212/22LN ED /26 D /26LN D /26 S /26LN S APMR212/26 ED APMR212/26LN ED 28/56

29 APM APMR ED F Depth A B ø DIA Serie ø11.43 DIA Gear motor material d D SAE J 498-9T 16/32 DP FLAT ROOT SIDE FIT CLASS 1 FIT Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Type Displacement cm 3 /rev Shaft max torque: see section 3.3 Tightening torque: see section /16 2UNF Depth Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D /11 D /15 D /19 D /22 D /26 D /8.5LN D /11LN D /15LN D /19LN D /22LN D /26LN D /8.5 S /11 S /15 S /19 S /22 S /26 S /8.5LN S /11LN S /15LN S /19LN S /22LN S /26LN S APMR212/8.5 ED APMR212/11 ED APMR212/15 ED APMR212/19 ED APMR212/22 ED APMR212/26 ED APMR212/8.5LN ED APMR212/11LN ED APMR212/15LN ED APMR212/19LN ED APMR212/22LN ED APMR212/26LN ED 29/56

30 APM APMR ED Serie F Depth A B X18 DIN X.78 ø DIA ø11.43 DIA Gear motor material d D ø Reversible motor ED - External Drain Front cover: aluminium Body: aluminium Back cover: cast iron Seals: NBR + HNBR Shaft max torque: see section 3.3 Tightening torque: see section /4-28 UNF 7/16 2UNF Depth Type Displacement cm 3 /rev Dimensions Outlet Inlet A B d D F d D F LN mm inch mm inch mm inch mm inch mm mm inch mm inch mm M6X M6X Clockwise rotation: D Counter-clockwise rotation: S Reversible motor External Drain Standard Low Noise Standard Low Noise Standard Low Noise /8.5 D /8.5LN D /8.5 S /8.5LN S APMR212/8.5 ED APMR212/8.5LN ED /11 D /11LN D /11 S /11LN S APMR212/11 ED APMR212/11LN ED /15 D /15LN D /15 S /15LN S APMR212/15 ED APMR212/15LN ED /19 D /19LN D /19 S /19LN S APMR212/19 ED APMR212/19LN ED /22 D /22LN D /22 S /22LN S APMR212/22 ED APMR212/22LN ED /26 D /26LN D /26 S /26LN S APMR212/26 ED APMR212/26LN ED 3/56

31 3 customised versions (General use or cooling system) Front cover Balancing plate External Balancing gears Body plate Back cover In this section, a single motor can be configured and customized. wide availability of covers, bodies, gears and seals sets provides great flexibility to motor range and allows several different motor configurations. In order to simplify the selection of the desired motor combination, a 'configurator form' is available and, by filling it out, it will guide you in the motor creation process. 31/56

32 3.1 Customised versions order example A P M R / 8, 5 L N - S - A 6 S - 1 C H - G H 1 - * * * Function APM= single gear motor - unidirectional APMR = single gear motor - reversible Series 212 Displacement 8.5= 8.4 cm 3 /rev 11= 11.1 cm 3 /rev 15= 15.1 cm 3 /rev 19= 19.2 cm 3 /rev 22= 22.2 cm 3 /rev 26= 26.2 cm 3 /rev Version Omitted if 12 teeth standard LN= 12 teeth Low Noise version Rotation S = left-hand rotation D = Right-hand rotation Omitted if reversible version Shaft end code see section 3.3 Shaft seal material type code see section Front cover series/material with/without bearing code see section Type of ports code see section 3.5 Inlet/outlet port size code combination see section 3.5 d D Body material + seal material code see section Back cover type see section 3.6 BHRE section : Version - Progressive number (omitted) 32/56

33 3.2 Single motor dimensions C A A X motor size A C* mm inches mm inches / / / / / / C*: dimensions with standard cast iron back cover with tie rod + nut. For other back covers dimension see section Front cover dimensions Front cover type German rectangular x x Front cover type mm inches mm inches European rectangular Bearing support German version Through 2 bolts SAE-A 2 bolts SAE-B 2 bolts /56

34 3.3 Shaft end code A P M / 8, 5 - S - A 6 S - 1 C H - G H Shaft end shape Shaft end ordering code Max torque 8 Tang drive 8 mm -.32 inches M T max = 65 Nm Straight keyed Ø 15,85 mm -.62 inches S T max = 65 Nm 1:5 Tapered shaft 1:5 G T max = 135 Nm 1:8 Tapered shaft 1:8 E T max = 135 Nm 9 Teeth external spline B17X14 DIN5482 D T max = 11 Nm 9 teeth external spline SAE J 498-9T 16/32 DP A T max = 9 Nm 11 teeth external spline SAE J T 16/32 DP T T max = 14 Nm 13 teeth external spline SAE J T 16/32 DP B T max = 27 Nm 2 1:5 Bearing application 1:5 see section T max = 1 Nm 22 Straight 22 mm -.87 inches see section T max = 1 Nm 34/56

35 3.4 Front cover Shaft seal material A P M / 8, 5 - S - A 6 S - 1 C H - G H Shaft seal Type/material Ordering code Shaft seal motor NBR 5 Shaft seal motor HNBR (standard) 6 FPM (VITON) 7 High back pressure shaft seal ( reduced life see note 1.1 ) 8 35/56

36 3.4.2 Front cover type A P M / 8, 5 - S - A 6 S - 1 C H - G H General use Cooling system Type Alluminium Cast iron Cast iron + bearing Cast iron + dust protection Shape Ordering code Shape Ordering code Shape Ordering code Shape Ordering code German rectangular (Ø 8 mm inches) A B C F European rectangular (Ø 36.5 mm ) Through 2 bolts (Ø 5 mm ) Through 2 bolts (Ø 5 mm ) Through 2 bolts (Ø 52 mm ) SAE-A 2 bolts (Ø mm inches) D E * G H * I L M * N O P * * R S * Q SAE-B 2 bolts (Ø 11,6 mm - 4 inches) V * * * Aluminium and cast iron front cover dimensions: see from page 16 to 3 and 33. * Please consult Bucher Hydraulics 36/56

37 3.4.3 Front bearing application X A P M / 8, 5 - S - P 1-1 C H - G H + Ø 2 Ø.79" + 1:5 + + X = 45 mm (1.77 inches) Shaft seal material: HNBR (Standard) High pressure seal (Reduced life component: see note on section 1.1) = = P1 T max = 1 Nm P2 T max = 8 Nm + Ø 22 Ø.87" + Shaft seal material: HNBR (Standard) = C1 T max = 1 Nm + Straight 22 mm -.87 inches + X = 48.5 mm (1.91 inches) High pressure seal (Reduced life component: see note on section 1.1) = C2 T max = 8 Nm Fa (N) Maximum Axial force admitted with radial load lesser than 1 N rpm See section /56

38 3.5 Body A P M / 8, 5 - S - A 6 S - 1 C H - G H Port type Ordering code Displacement Outlet Dimension (mm - inch) Inlet Ordering code All without 8.5 A metric On demand B BSPP threaded ports C 8.5 3/8 3/8 A /2 3/8 B /4 1/2 C At pressure P1 > 21 bar limited service life Nm Nm Nm 8+5 Nm ø /8 -BSPP ø /2 -BSPP ø /4 - BSPP ø BSPP 3/8 BSPP 1/2 BSPP 3/4 BSPP 1 BSPP 38/56

39 Port type Ordering code Displacement Outlet Dimension (mm - inch) Inlet Ordering code SAE threaded ports 8 all 1-1/16 12UNF (SAE12) 7/8 14UNF (SAE1) A 8.5 3/4 16UNF (SAE8) 3/4 16UNF (SAE8) B At pressure P1 > 21 bar limited service life Nm Nm Nm ø ø ø ø /4-16-UNF-2B 7/8 14 UNF-2B ø ø /4 16-UNF-2B SAE8 7/8 14-UNF-2B SAE1 1-1/16 12-UNF-2B SAE12 1 1/16-12 UNF 8.5 1/2 1/2 A NFTP /4 1/2 B At pressure P1 > 21 bar limited service life Nm 7+5 Nm /2 -NPTF ø18.2 3/4 -NPTF ø23.5 1/2 NPTF 3/4 NPTF (d) (D) M6 (F) (d) (D) M6 (F) A European 4 bolt (d) (D) M8 (F) (d) (D) M6 (F) B (d) (D) M8 (F) (d) (D) M8 (F) C F F d D 8+4 Nm 2+5 Nm M6x1-6H M8x1.25-6H 39/56

40 Type Ordering code Displacement Outlet Dimension (mm - inch) Inlet Ordering code (d) (D) M6 (F) A German 4 bolt flanged (287-S SAEB) (d) (D) M6 (F) (d) (D) M8 (F) (287-S SAEB) (d) (D) M6 (F) 287-S SAEB: M5 (F) B C M6x1-6H Nm Nm M8x1.25-6H d D F F Other ports 9 If the requested port type is not included, please indicate number 9 and specify the details in the request Body seals material A P M / 8, 5 L N - S - A 6 S - 1 C H - G H Body material Seal material Ordering code aluminium alloy HNBR (standard) H 4/56

41 3.6 Back covers Standard back covers Cast iron back cover - Unidirectional motor Nm A P M / 8, 5 - S - A 6 S - 1 C H - G H Type Back cover, standard version, cast iron material Ordering code GH Cast iron back cover with drain port - Standard version for bidirectional motor (14) (.55 ) ø19 M12x1.5-6H Depth 13 A P M R / 8, 5 - A 6 S - 1 C H - G 1 Type Thread Tightening torque Ordering code -6 1/4 BSP 3 +7 Nm G1 (standard) Back cover with external drain line, cast iron material for reversible motor -5 SAE Nm G2-6 M12x Nm G3 41/56

42 3.7 Valve and circuits Anticavitation valves DN 3,5 mm integrated inside unidirectional motor INLET OUTLET A P M / 8, 5 - D - A 6 S - 1 C H - G H + C Anticavitation valves DN 3,5 mm integrated inside bidirectional motor used in only one direction INLET DRAIN OUTLET A P M R / 8, 5 - D - A 6 S - 1 C H - G 1 + C Anticavitation valve assembled inside cast iron back cover Nm Only valve code : INLET A P M / 8, 5 - D - A 6 S - 1 C H - + C A V Double anticavitation valves assembled directly inside front cover (cast iron only) OUTLET IN/OUT IN/OUT DRAIN A P M R / 8, A 6 S - 1 C H - G 1 + C F 42/56

43 3.7.5 Cast iron back cover with integrated valve: antishock-anticavitation valve, fixed setting Nm INLET OUTLET A P M / 8, 5 - D - A 6 S - 1 C H - U C 1 6 Antishock-anticavitation valve OUTLET Pressure [bar] VC 1 INLET Nm Nm 8.31 Antishock INLET OUTLET 21 bar 15 bar 8 bar Flow [l/min] Pressure setting bar (PSI) Valve code only Ordering code 4 (58) UC4 6 (87) UC6 8 (116) UC8 13 (188) UC13 14 (23) UC14 15 (217) UC15 16 (232) UC16 17 (246) UC17 18 (261) UC18 2 (29) UC2 21 (34) UC21 VC (plug) VC Pressure setting over 21 bar are available, please consult Bucher Hydraulics Pressure [bar] Anticavitation Flow [l/min] 43/56

44 3.7.6 Back cover in cast iron with drain port and integrated valve: antishock-anticavitation valve, fixed setting ø A Nm OUTLET B DRAIN Valve characteristics see section INLET A P M R / 8, 5 - D - A 6 S - 1 C H - U C G 4 UC16 = Antishock-anticavitation valve ordering code (see section 3.7.5) G Cast iron back cover 4 = Drain line port type Drain line port: Thread Tightening torque Ordering code 1/4 BSP Nm 1 (on request) M12x Nm 3 (on request) SAE Nm 4 (standard) 44/56

45 3.7.7 Back cover in cast iron with drain port with integrated valve: Double antishock-anticavitation valves, fixed setting A Nm ø B DRAIN A P M R / 8, 5 - A 6 S - 1 C H - U C G 4 A UC16 = Antishock-anticavitation valve ordering code (see section 3.7.5) G Cast iron back cover 4 = Drain line port type Drain line port: Thread Tightening torque Ordering code 1/4 BSP M12x1.5 SAE Nm Nm 2 +5 Nm 1 (on request) 3 (on request) 4 (standard) A = Drain line port position A B IMPORTANT! This circuit must be combined with front cover in cast iron, anticavitation valves included (see section 3.7.4) 45/56

46 3.7.8 Back cover in cast iron with integrated valves: proportional relief valve (Q max = 6 l/min) " OUTLET ø26 ø1.2" " " DRAIN " 3.29" INLET A P M R / 8, 5 - D - A 6 S - 1 C H - L 2 3 A 4 + C L = Type of cast iron cover/valve combination Back cover with L cavity and proportional pressure-relief cartridge valve type Qmax = 6 l/min Inverse proportional pressure-relief cartridge, size 5, DBVSA-1LG (NBR seals) 23 = Pressure settings Pressure range : 16 = 16 bar 23 = 23 bar For further settings value available please consult Bucher Hydraulics ATTENTION! To prevent any pressure surges, outlet port must be routed to tank with the least possible back-pressure. Any tank pressure acting at outlet port is additive to the pressure setting at the main inlet port. IMPORTANT! Further note and characteristics available in the dedicated catalogue 4-P E A = Solenoid connection type and nominal voltage Connection type AJ: A = 12 V DC B = 24 V DC 4 = Drain line port type Drain line port: IMPORTANT! To achieve the proportional pressure-relief cartridge's maximum performance rating, fit the solenoid coil with the plug pins at the top. When fitting the cartridges, note the mounting attitude (preferably vertical, with coil down automatic air bleed) and use the specified tightening torque. No adjustments are necessary, since the cartridges are set in the factory. Thread Tightening torque Ordering code 1/4 BSP M12x1.5 SAE Nm Nm 2 +5 Nm 1 (on request) 3 (on request) 4 (standard) If the anticavitation valve integrated inside the motor is requested, please specify +C 46/56

47 3.7.9 Back cover in cast iron with integrated valves: proportional relief valve (Q max = 12 l/min) " " OUTLET DRAIN " 1/4" ÓÓÓ ÓÓÓ " " INLET A P M R / 8, 5 - D - A 6 S - 1 C H - D 2 3 A 1 + C D = Type of cast iron cover/valve Back cover with D cavity and proportional pressure-relief cartridge valve type (Q max = 12 l/min) Inverse proportional pressure-relief cartridge, size 1, DBVSA-1CG (NBR seals) ATTENTION! 23 = Pressure settings Pressure range : 16 = 16 bar 23 = 23 bar For further settings value available please consult Bucher Hydraulics. To prevent any pressure surges, outlet port must be routed to tank with the least possible back-pressure. Any tank pressure acting at outlet port is additive to the pressure setting at the main inlet port. IMPORTANT! Further note and characteristics available in the dedicated catalogue 4-P E A = Solenoid connection type and nominal voltage Connection type AJ: A = 12 V DC B = 24 V DC 4 = Drain line port type Drain line port: IMPORTANT! To achieve the proportional pressure-relief cartridge's maximum performance rating, fit the solenoid coil as shown (with the plug pins at the top). When fitting the cartridges, note the mounting attitude (preferably vertical, with coil down automatic air bleed) and use the specified tightening torque. No adjustments are necessary, since the cartridges are set in the factory. Thread Tightening torque Ordering code 1/4 BSP M12x1.5 SAE Nm Nm 2 +5 Nm 1 (standard) 3 (on request) 4 (on request) If the anticavitation valve integrated inside the motor is requested, please specify +C 47/56

48 3.7.1 Back cover in aluminium with integrated valves: Proportional relief valve with 4/2 ON-OFF reversible valve (Q max = 6 l/min) The inverse proportional pressure relief cartridge valve has to be partially or completely open before to switch the Directional Control valve " " " " " OUTLET INLET " " " " APMR212 A P M R / 8, A 6 S - 1 C H - L 2 3 A 3 R + C L = Type of aluminium cover/valve Back cover with L cavity and proportional pressure-relief cartridge valve type Q max = 6 l/min Inverse proportional pressure-relief cartridge, size 5, DBVSA-1LG (NBR seals) AJ connector 23 = Pressure settings ATTENTION! To prevent any pressure surges, oultet port must be routed Pressure range : 16 = 16 bar to tank with the least possible back-pressure. Any tank pressure acting at outlet port is additive to the 23 = 23 bar pressure setting at the main inlet port. For further settings value available please consult Bucher Hydraulics. IMPORTANT! Further note available in the dedicated catalogue 4-P E If the anticavitation valve integrated inside the front cover is requested, please specify +C For further characteristics see catalogue: 4-P E A = Solenoid connection type and nominal voltage A = 12 V DC B = 24 V DC IMPORTANT! To achieve the proportional pressure-relief cartridge's maximum performance rating, fit the solenoid coil with the plug pins at the top. When fitting the cartridges, note the mounting attitude (preferably vertical, with coil down automatic air bleed) and use the specified tightening torque. No adjustments are necessary, since the cartridges are set in the factory. 3 = Port type Thread Tightening torque Ordering code Directional P= 3/4-16 UNF (SAE8) control valve 6 Nm Watt T= 3/4-16 UNF (SAE8) 6 Nm Connector +5 3 type: D= 9/ B UNF (SAE6) 2 DT4-2P ED +5 Nm 1% IMPORTANT! This circuit must be combined with front cover in cast iron, anticavitation valves included (see section 3.7.4) 48/56

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