Cylinders. pneumatic compact hydraulic hydraulic iso PEDROTTI. NORMALIZZATI - MECCANICA

Transcription

1 Cylinders pneumatic compact hydraulic hydraulic iso PEDROTTI NORMALIZZATI - MECCANICA

2 index

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4 index - PNEUMATIC CYLINDERS Compact cylinders ISO p. 08 Pneumatic cylinder - Order code... p. 09 Standard strokes... p. 09 WB - WBM magnetic action pneumatic cylinder... p. 10 WF - WFM double magnetic action pneumatic cylinder... p. 11 QFL / VFL Fixing flange... p. 12 Technical features... p / Flow rate regulators... p / Flow rate regulators... p. 15 5/2 Way - 1 Monostable electro-pneumatically actuated valves... p. 16 5/2 Way - 2 Bistable electro-pneumatically actuated valves... p. 16 Solenoids valves... p. 17 Connectors... p. 17 Technical features... p. 18 Materials and components... p. 18 Forces and consumption... p. 19 3

5 index - COMpact hydraulic cylinders Compact hydraulic cylinders... p. 22 Compact hydraulic cylinders - Order code and data... p. 23 RTP-X / MTP-X... p. 25 RTP-A / MTP-A... p. 26 RTP-B / MTB-B... p. 27 RTP-E / MTP-E... p. 28 Sensors... p. 29 Male threaded end EM... p. 29 Male threaded end ET... p. 29 4

6 index - iso hydraulic cylinders Main features of hydraulic cylinders ISO 6020/2... p. 32 CP DP MP... p. 33 Order code... p. 34 Features and selection of a cylinder... p. 35 X anchoring (ISO MX5)... p. 39 A anchoring (ISO ME5)... p. 40 A anchoring (ISO MS2)... p. 40 Reed Sensors... p. 41 Connectors... p. 41 Hydraulic cylinders for moulds ISO 6020/2... p. 42 5

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8 pneuamtic Cylinders

9 compact cylinders iso The new ISO standard compact cylinders have bores ranging from 20 mm to 100 mm; their overall dimensions are 50% smaller than ISO cylinders of the same size. The great advantage offered by these cylinders is the ISO interface, which allows combination with the fixing devices used for ISO (ISO 6431 VDMA 24562) cylinders. The ISO cylinders have a single and elegant design. The body has lengthwise cavities on three sides for housing and concealing the magnetic sensors. Elastic bumpers are present at the end of the stroke. A version with male threaded rod is also available. 8

10 Pneumatic cylinder - order code W B M Stroke (mm) Intermediate or longer strokes available on request Diameter (mm) Versions / Version = Female thread, standard M= Male thread rod Execution B = Single magnetic action F = Double magnetic action D = Single magnetic action - thrust spring [technical information on request] J = Double magnetic action pass-through rod [ technical information on request ] FA = Double magnetic action anti-rotation [ technical information on request ] W SERIE STANDARD STROKES Ø MM # # # # # # # # 25 # # # # # # # # 32 # # # # # # # # # # 40 # # # # # # # # # # 50 # # # # # # # # # # 63 # # # # # # # # # # 80 # # # # # # # # # # 100 # # # # # # # # # # WB Single magnetic action WF Double magnetic action WD Single magnetic action - thrust spring WJ Double magnetic action pass-through rod # WFA Double magnetic action anti-rotation 9

11 A PL ZB+ ZA+ PL ZB + ZA + T1 E TG CH L1 KK ØD KF Ø D1 EE TG E AF BG LA RT E TG CH RT Ø D KF EE TG E magnetic ACTION pneumatic cylinder WB - WBM Ø20-25 Ø A PL G ZB + ZA + G PL G ZB + ZA + G T1 KK D1 AF + = add stroke SINGLE MAGNETIC ACTION Ø MM ØD E L1 A KK CH AF KF BG LA RT G TG EE PL Ø D1 T1 ZA+ ZB ,5 16 M8x1, M6 18,5 5 M5-22 M ,5 16 M8x1, M6 18,5 5 M5-26 M , M10x1, M8 - - M6 14,5 32,5 G1/8 7,5 9 2, M10x1, M8 - - M G1/8 7,5 9 2, M12x1, M M8 14,5 46,5 G1/8 7,5 12 2, ,5-22 M12x1, M M ,5 G1/8 7,5 12 2, , M16x1, M M10 15,5 72 G1/8 7,5 12 2, M16x1, M M G1/8 7,5 12 2,

12 A PL ZB+ ZA+ PL ZB + ZA + T1 E TG CH L1 KK ØD KF Ø D1 EE TG E AF BG LA RT E TG CH RT Ø D KF EE TG E double magnetic ACTION pneumatic cylinder WF- WFM Ø20-25 Ø A PL G ZB + ZA + G PL G ZB + ZA + G T1 KK D1 AF + = add stroke DOUBLE MAGNETIC ACTION Ø MM ØD E L1 A KK CH AF KF BG LA RT G TG EE PL Ø D1 T1 ZA+ ZB ,5 16 M8x1, M6 18,5 5 M5-22 M ,5 16 M8x1, M6 18,5 5 M5-26 M , M10x1, M8 - - M6 14,5 32,5 G1/8 7,5 9 2, M10x1, M8 - - M G1/8 7,5 9 2, M12x1, M M8 14,5 46,5 G1/8 7,5 12 2, ,5-22 M12x1, M M ,5 G1/8 7,5 12 2, , M16x1, M M10 15,5 72 G1/8 7,5 12 2, M16x1, M M G1/8 7,5 12 2,

13 Fixing flange qfl Material: Steel Ø MM A B C D E F G H I L M ,5 10 6,6 10 5, ,5 10 6,6 10 5,4 12 Fixing flange vfl Material: Steel Ø MM P Q S R T V

14 technical FEATURES 13

15 Flow RATE RegulatorS / Pressures Minimum pressure: Maximum pressure: 1 bar (0.1 MPa) 10 bar (1 MPa) Temperature Minimum temperature: -20 C Maximum temperature: +80 C Connection pipes Pipes in plastic material: PA6, PA11, PA12, Polyethylene, *Polyurethane, FEP, PTFE.. *A hardness of 98 shore is recommended for polyethylene pipes. Compatabile fluids Compressed air CODE PIPE A B L1 L2 CH D CONF M ,5-42, /8 5, M ,5-42,5 8 12, /8 5,5 21, , /4 7 24,5 48, , M5 4 20,5 38,5-42,5 8 12, /8 5,5 22, , / , , /8 5, / , /8 7,5 28, /4 7 28,5 48, /8 7,5 30, /8 7,5 32, , / , /2 9 35, ,5 10 Code =... = unidirectional by cylinder Code =... = unidirectional by valve C C v v 14

16 Flow rate regulators / Pressures Minimum pressure: Maximum pressure: 1 bar (0.1 MPa) 10 bar (1 MPa) L1 Temperature Minimum temperature: -20 C Maximum temperature: +80 C L2 CH D Connection pipes Plastic material pipes: PA6, PA11, PA12, Polyethylene, *Polyurethane, FEP, PTFE. *A hardness of 98 shore is recommended for polyethlene pipes. B A Compatible fluids Compressed air CODE PIPE A B L1 L2 CH D CONF M , /8 5, M ,5 8 12, /8 5,5 21, , /4 7 24,5 36, , M5 4 20,5 29,5 8 12, /8 5,5 22, , / , , /8 5, / , /8 7,5 28,5 42, /4 7 28,5 36, /8 7,5 30,5 42, /8 7,5 32,5 42, , / , /2 9 35, ,5 10 Code =... = Unidirectional by cylinder Code =... = Unidirectional by valve C C v v 15

17 Monostable electro-pneumatically actuated valves 5/2 ways - 1 CODE WAYS MEASURE 01V S /2 1/8 01V S /2 1/4 01V S /2 1/2 Bistable electro-pneumatically actuated valves 5/2 way - 2 CODE WAYS MEASURE 01V S /2 1/8 01V S /2 1/4 01V S /2 1/2 16

18 Solenoid valves CODE VOLTAGE POWER SOL01012C V DC 3W SOL01024C V DC 3W SOL01024C3000* 24V DC 2W SOL01024A V AC 5VA SOL01110A V AC 5VA SOL01220A V AC 5VA *Solenoide Consigliato M Technical features Voltage tolerances Insulation class Protection degree Work cycle Terminals ±10% F CEI EN IP65 IEC with connector 100% DIN B Connectors CODE COLOR FEATURES CON BLACK STANDARD WITH 2 POLES CON BLACK LED + VDR 0-24V CON BLACK LED + VDR 110V CON BLACK LED + VDR 220V 1 VDR: Supplied with varistor as overvoltage protection device WIRING DIAGRAM LED RED M3 2 VDR R 2 CON CON CON CON Technical features Protection degree Seal Cable diameter IP65 IEC Profile seal 6 8 mm 17

19 technical features MATERIALS AND COMPONENTS 1 Chromium plated steel piston rod (AISI 303 from 20 to 25) (C40 from 32 to 100) 2 Front head in anodized aluminium 3 Galvanized steel screw 4 Rod seal in polyurethane 5 Bushing in sintered bronze 6 O-RING seal in NBR 7 Piston seal in polyurethane 8 Magnet in plastoferrite 9 Aluminum piston 10 O-RING seal in NBR 11 Piston fixing nut in galvanized steel 12 Cylinder sleeve in anodized aluminium 13 Rear head in anodized aluminium Pressure Minimum pressure: 1 bar (0.1 MPa) Maximum pressure: 10 bar (1 MPa) Operation Single and Double-acting magnetic. Single pass-through piston rod and anti-rotation. Temperatures Minimum temperature: 0 C (-20 C with dry air) Bores From 20 to 100 mm Maximum temperature : +80 C Compatible fluids Compressed air, filtered and non lubricated. Strokes Standard strokes From 5 to 200 mm 18

20 Forces and Consumption THRUSTING AND PULLING FORCE Ø CYL. Ø ROD USEFUL SURFACE (MM 2 ) WORKING PRESSURE IN BAR Ø20 10 Thrust = SPRING FORCES CYLINDER CONSUMPTION Force developed in N Pull = Ø25 10 Thrust = Pull = Ø32 12 Thrust = Pull = Ø40 12 Thrust = Pull = Ø50 16 Thrust = Pull = Ø63 16 Thrust = Pull = Ø80 20 Thrust = Pull = Ø Thrust = Pull = Ø CYL. SPRING LOAD STROKE Ø CYL. Ø ROD USEFUL SURFACE (MM 2 ) WORKING PRESSURE (BAR) Force developed in N Ø20 Spring Load at Rest 15, ,2 10,4 8,7 Compressed spring load 17,4 17,4 17,4 17,4 17,4 Ø25 Spring Load at Rest 19,5 18,5 17, Compressed spring load Ø32 Spring Load at Rest 27,8 25,3 22,8 20,2 17,7 Compressed spring load Ø40 Spring Load at Rest 36, ,7 29,5 27 Compressed spring load Ø50 Spring Load at Rest 32 30, ,8 26,5 Compressed spring load Ø63 Spring Load at Rest 61 58,5 56,3 53,5 51,5 Compressed spring load 64,8 64,8 64,8 64,8 64,8 Ø80 Spring Load at Rest 91, ,7 Compressed spring load Ø100 Spring Load at Rest Compressed spring load Air consumption in NL for every 10mm. of stroke Ø20 10 Thrust = 314 0,006 0,009 0,013 0,016 0,019 0,022 0,025 0,028 0,031 0,035 Pull = 235 0,005 0,007 0,009 0,012 0,014 0,016 0,019 0,021 0,024 0,026 Ø25 10 Thrust = 490 0,010 0,015 0,020 0,025 0,029 0,034 0,039 0,044 0,049 0,054 Pull = 412 0,008 0,012 0,016 0,021 0,025 0,029 0,033 0,037 0,041 0,045 Ø32 12 Thrust = 804 0,016 0,024 0,032 0,040 0,048 0,056 0,064 0,072 0,080 0,088 Pull = 691 0,014 0,021 0,028 0,035 0,041 0,048 0,055 0,062 0,069 0,076 Ø40 12 Thrust = ,025 0,038 0,050 0,063 0,075 0,088 0,101 0,113 0,126 0,138 Pull = ,023 0,034 0,046 0,057 0,069 0,080 0,092 0,103 0,114 0,126 Ø50 16 Thrust = ,039 0,059 0,079 0,098 0,118 0,137 0,157 0,177 0,196 0,216 Pull = ,035 0,053 0,070 0,088 0,106 0,123 0,141 0,159 0,176 0,194 Ø63 16 Thrust = ,062 0,094 0,125 0,156 0,187 0,218 0,249 0,281 0,312 0,343 Pull = ,058 0,087 0,117 0,146 0,175 0,204 0,233 0,262 0,292 0,321 Ø80 20 Thrust = ,101 0,151 0,201 0,251 0,302 0,352 0,402 0,452 0,503 0,553 Pull = ,094 0,141 0,188 0,236 0,283 0,330 0,377 0,424 0,471 0,518 Ø Thrust = ,157 0,236 0,314 0,393 0,471 0,550 0,628 0,707 0,785 0,864 Pull = ,147 0,221 0,295 0,368 0,442 0,515 0,589 0,663 0,736 0,810 19

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22 compact hydraulic cylinders

23 Compact hydraulic cylinders COMPACT CYLINDERS rtp SERIES Double-acting cylinders made of light alloy with body machined from solid and anodized surface. They are characterized by their overall dimensions being reduced in relation to their hydro mechanical properties. They are used above all for the automation of thermoplastic and die-casting molds. The many fastenings on the cylinder body allow easy and versatile installation. COMPACT CYLINDERS MTP SERIES Mechanical and dimensional similar characteristics to the RTP series. The piston contains a permanent magnet; this creates a magnetic field that activates the sensors located in the dedicated groves in the cylinder body. These cylinders are used for the automation of molds and industrial applications that require control of handling sequences. main FEATURES of THE hydraulic cylinders for molds Piston diameters (ø mm) Rod diameters (ø mm) Working pressure 120bar (without peaks) testing pressure 160 bar Stroke length (mm) Working temperature ( C) with VITON seals (W) Seals in Viton + PFE Chrome plated CK45 rod, mm thick. Working fluid Hydraulic Mineral Oil or Synthetic Oil and Phosphoric Esters Body in special light alloy RTP Series (standard series) MTP Series (for use with magnetic sensors) 22

24 compact hydraulic cylinders - order code and data SERIES Ø BORE (MM) MODEL (OR.AL) STROKE (MM) SPACER SEALS SPECIAL MTP 50 X 75 SJ 50 W 50 RTP Standard 25 X Base cylinder 20 SJ 0 Standard Special variations MTP Magnetic 32 A Front feed 50 5 W Viton 40 B Rear feed E Side feed Notes: In order to compose the order code, follow the coding scheme by inserting in sequence the initials that identify the construction features of the cylinder, ignoring those not required. The sensors for the magnetic cylinders shall be required separately indicating the quantity and type and will be supplied separately. Model (feed ports) All the models (with the same boring) have the same holes on the body (fixing holes, fitting key). They are distinguished by their feed ports: X Side connections, threaded on the body; A Front feeds with seal o-ring; B Rear feeds with seal o-ring; E Side feeds with seal o-ring. A-B-E : cylinder is fed with fluid via canals machined on the tool that, with suitable fastenings and seal o-rings, convey the fluid under pressure to the actuator. Stroke Series stroke mm Spacers In addition to the standard strokes, intermediate values can be obtained by inserting spacers of 5, 10 and 15 mm, etc. inside the cylinder. The overall dimensions of the cylinder remain binding to the standard strokes. Ex. Compact MTP cylinder, bore ø50, stroke length 30 mm. The body of an MTP cylinder bore ø 50 stroke length 50 mm, inside which a spacer of 20 mm is inserted to obtain the stroke length of 30 mm. Sealing gaskets Standard in polyurethane Viton w for temperatures up to 150 C. Sensors Sct with reed contact for temperatures up to 80 C. Sctw with reed contact for temperatures up to 120 C. 23

25 compact hydraulic cylinders - data The magnetic cylinders (equipped with their limit switches) must be installed at a minimum distance of 30 mm from each other. If the magnetic cylinder is positioned in the cavity of a magnetic absorption ferrous system, a minimum distance of 20 mm must be kept from the external movement range of the cylinder to the metal wall immediately closer (excluding the fixing wall), so as to avoid deformation of the magnetic field and subsequent non activation of the sensors. It is advisable not to use magnetic limit switch cylinders in proximity of strong magnetic fields (e.g. resistance welding machines). The maximum current, working voltage and maximum power of contact switching must not be exceeded for any reason. In the event of inductive loads, at the moment of disengaging, a high peak voltage is produced (see solenoid valve); a suitable protection circuit (R-C) or varistor must therefore be arranged to protect the sensor. The same effects occur when the wires of the sensor exceed 5 m in length. The inrush power (relay - fuse - filament lamp) is considerably higher (8-10 times) than the normal working power; the sensor must therefore be selected based on the inrush value. For bench adjustment of the position of the sensors, use of a ohmic tester is recommended. Series connection of the sensors The SCT reed sensors (with two wires) allow series connection. Since voltage decreases by about 4 V per sensor, a maximum of 2 sensors can be connected, provided that the feed voltage is not lower than 24 VDC. If you need 3 or more sensors to be connected in series, then use 3-wire sensors. SX Special execution Every type of special execution (extended rod, rod ends, fixing modifications, surface treatments, etc.) Has a correspondent drawing of ours. Warnings The cylinder must not be used up to stroke end, and the load displaced must stop on an external support, to avoid damaging the hydraulic member (which would occur in a short time) and the risk of damaging property and/or persons. 24

26 compact hydraulic cylinders RTP-X / MTP-X + = add stroke AL. D A + B C CH D E F G H I L M N O P Q R S T ,5 14 G 1/4'' M , G 1/4'' M , G 1/4'' M , G 1/4'' M20 37, G 3/8'' M20 47, G 1/2'' M G 1/2'' M

27 hydraulic cylinder front feed RTP-A / MTP-A + = add stroke AL. D A + B C CH D E F G H M N O P Q R S T U Z OR , M , , (106) M , (106) M , , (106) M20 37, (106) M20 47, , (2043) M (2043) M (2043) 26

28 hydraulic cylinder rear feed RTP-B / MTP-B + = add stroke AL. D A + B C CH D E F G H M N O P Q R S T U Z OR , M , , (106) M , (106) M , , (106) M20 37, (106) M20 47, , (2043) M (2043) M (2043) 27

29 hydraulic cylinder side feed RTP-E / MTP-E + = add stroke AL. D A + B C CH D E F G H N O P Q R S T W X Y Z OR ,5 14 M , (106) M , (106) M , (106) M20 37, (106) M20 47, (2043) M (2043) M (2043) 28

30 SENSORs SCT with REED contact for temperatures up to 80 C SCTW with REED contact for temperatures up to 120 C male threaded end EM TIPO CH L N S T U EM M10 M10x1, EM M12 M12x1, EM M14 M14x1, EM M20 M20x1, EM M27 M27x EM M33 M33x male threaded end Et TIPO CH L N U V W Z ET M ET M ET M ET M ET M , ET M

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32 iso hydraulic cylinders

33 MAIN PROPERTIES OF HYDRAULIC CYLINDERS ISO 6020/2 Piston diameters (ø mm) Rod diameters (ø mm) Pressure Working (Bar) 160 Test (Bar) 220 Minimum (Bar) 8 Stroke length (mm) up to 4000 Stroke tolerance (mm) (according to ISO 8131 standard) Working temperature ( C) with standard seals with VITON gaskets (W) with low friction gaskets (Y) Translation rate (m/s) with standard gaskets 0,02 0,4 with VITON gaskets (W) 0,02 0,4 with low-friction gaskets (Y) 0,01 5 Working fluid with reference (according to ISO 6743/4 - ISO 4406 standards) Hydraulic mineral oil Synthetic oil and phosphoric esters Water-glycol fluid (HFC) Steel square heads assembled with 4 tie-rods Tie-rods made of quenched steel with rolled thread Bronze rod guide Front and/or rear braking 9 types of fixing attachments Male or female thread rod end Standard feed inlet ports with cylindrical gas thread, NPTF or SAE threads can be provided on request. CP-DP Series Steel sleeve smoothed internally H8 Ra 0.4 Chromium plated C45 steel rod, possible variations in quenched and tempered stainless steel Steel piston CD-DK series MP series (with magnetic sensors) Sleeve in amagnetic material internally smoothed H8 Ra 0.4, Piston in special amagnetic alloy Stainless steel piston with magnetic insert SERIES CP MP DP Construction standard ISO 6020/ DIN Piston diameters Operating pressure (bar) Test pressure (bar) Minimum pressure (bar) 8 Stroke (mm) Tolerances on the stroke (mm) 0+2 According to standard ISO 8131 Standard seals Working temperature ( c) Translation speed (m/s) Fluid Braking Magnetic sensors Heads Sleeve Rod Piston Rod guide Tie rods Viton seals (w) Low-friction seals (y) Standard seal 0,02 0,4 Viton seals (w) 0,02 0,4 Low-friction seals (y) 0,01 0,5 Hydraulic mineral oil - synthetic oils and phosphoric esters Water - Glycol(hfc) With reference to ISO 6743/4 ISO 4406 standards Front and/or back Only for MD series Steel square heads assembled with 4 tie-rods CD-DK series, in internally smoothed steel H8, MD series in special amagnetic alloy Chromium plated C45 steel, possible variations in quenched and tempered stainless steel CD-DK series in steel, MD series in stainless steel with magnetic insert Bronze Quenched and tempered steel 32

34 HYDRAULIC CYLINDERS SERIEs: CP DP MP POS. NAME MATERIAL 1 Rod Chromium plated steel 2 Flange Steel 3 Guide bushing Bronze 4 Front brake bush (on request) Steel 5 Sleeve Steel 6 Front brake bush (on request) Steel 7 Rear brake (on request) Tempered steel 8 Spacer (on request) Steel 9 Piston Steel 10 Rear brake (on request) Tempered steel 11 Rear brake bush (on request) Steel 12 Rear head Steel 13 Self-locking nut Steel 14 Tie rod Quenched and tempered steel 15 Self-locking dowel Steel 16 Brake adjuster Steel 17 Rod scraper Polyurethane-nitrile rubber 18 Rod seal Polyurethane-nitrile rubber 19 O-ring + anti-extrusion ring Nitrile rubber + P.T.F.E. 20 O-ring + anti-extrusion ring Nitrile rubber + P.T.F.E. 21 O-ring Nitrile rubber 22 Piston seal NBR/Acetal/ POM 23 O-ring + anti-extrusion ring Nitrile rubber + P.T.F.E. 24 Piston seal (Y) Nitrile rubber + P.T.F.E. 25 Guiding sliding block P.T.F.E 26 Rod seal Nitrile rubber + P.T.F.E. magnetic variation series MP POS. NAME MATERIAL 27 Sleeve Amagnetic alloy 28 Piston Stainless 29 Piston seal (Y) Nitrile rubber + P.T.F.E. 30 Magnet Neodinium 31 Guide sliding block P.T.F.E 33

35 ORDER CODE SERIES Ø BORE (MM) Ø ROD (MM) ANCHORING BRAKING STROKE (MM) SPACER SEAL ROD END SENSORS SPECIAL CP 50 / 28 - A K 600 SJ 50 W SF SR SX CP Special MP versions SR Sold SH Separat Standard Male thread DP SF Female thread ST Flanged rod end Base cylinder Flange front ISO 6020/2 DIN Anchoring MX5 ME5 ME5 A Feet MS2 MS2 E X SL FL. Standard W Viton Y Low-friction Male thread DIN Female thread DIN Standard V Z K Without braking Front Back Front and rear For stroke SJ 50 mm mm mm For strokes above 2500 contact our Technical Dept. Notes: To create the order code follow the coding tables and enter in sequence the initials that identify the construction features of the cylinder, ignoring those not required. STANDARD: do not insert standard features. The sensors for the magnetic cylinders, even if codified, are supplied separately and must be requested separately indicating the quantity and type. I.e.: MP50/28A150 - N 6 sensors SR Magnetic cylinder, bore ø50, rod ø28, fixing with front glange ME5, stroke length 150 mm. 6 sensors type SR are supplied separately. 34

36 Features and selection of a cylinder 1 Construction series: CP standard - MP magnetic - DP large diameter - (160 bar) 2 Bore Choose in relation to the force to develop. The table below indicates the area of the thrusting and pulling of the piston depending on the piston rod used. Tab.2.1 Ø PISTON (MM) ,9 8 12,6 19, ,8 2,4 6,5 5,5 4,2 10 8,8 6,4 15,8 13,5 9, , ,4 25,6 62,6 53, ,3 59, Multiplying the surface area (cm²) by the working pressure (Bar) equals the force (N) of thrusting and pulling of the cylinder. I.e. Cylinder ø 50 rod ø 28 Working at 100 Bar Thrusting force F1 = (19.6*100)*10 = N Pulling Force F2 = (13.5*100)*10 = N 3 Rod Choose the rod based on the diameter of the cylinder (Tab. 2.1) checking the buckling load in the following paragraph. 3.1 Verification of the buckling load During the thrusting stage, the rod is subjected to an opposing axial force that tends to bend it or break it if the allowed buckling load is exceeded. On the basis of the choice made, the load on the rod at its maximum extension must be checked, depending on the type of anchoring used. The table below indicates the value of the stroke factor FC. Tab. 3.2 (REF.din6020/2 ) Anchoring Rod connection Assembly Stroke factor Anchoring Rod connection Assembly Stroke factor D - M - C Articulated and supported Articulated and with stiff guide 4 2 A -X - R - Q Fixed and supported Fixed and with stiff guide 2 0,5 G - H - I Articulated and supported Articulated and with stiff guide 3 1,5 Articulated and with stiff guide Fixed and supported 0,7 4 Fixed and with stiff guide 0,5 B - T - S - Q Fixed and with stiff guide 1 B Fixed and supported 2 Articulated and with stiff guide 1,5 Articulated and with stiff guide 0,7 35

37 Features and selection of a cylinder Tab. 3.3 Identify on the diagram the point of intersection between the value LI ideal length (mm) and the value F1 maximum thrust (N) outlined for the cylinder. The rod satisfying the buckling point verification is the one corresponding to the curve immediately above at the point of intersection identified on the diagram. 4 Double rod If so required, the creation of double-acting hydraulic cylinders with double rod is possible. You should keep in mind that with a double rod of equal diameter (with the same bore) the thrusting force F1 is equal to the pulling force F2; if the diameters of the rods are different (but the bore is the same) the thrusting force F1 and the pulling force F2 must be calculated for each of them (see Table 2.1). 5 Anchoring 14 types of anchoring are outlined. (Special anchoring can be provided on request) 36

38 Features and selection of a cylinder 6 Braking On request can be supplied braking devices machined in the heads and adjustable with a pin (except ø 25). These are designed to slow down the speed of the mass in proximity of the limit switches. It is recommended not to use the cylinder heads as the limit switches for the shifted load. Use of external stops is recommended in order to avoid damaging the hydraulic member (which would occur in a short time). During the slowing down stage, the braking systems are subjected to pressure much greater than the working pressure. For this reason they are constructed with suitable tempered and ground materials able to ensure optimal braking even after thousands of cycles. The table below indicates the length of theoretical braking with reference to the cylinder bores. Tab. 6.1 BORE FRONT (MM) BACK (MM) The efficacy of the braking depends on many variables (mass, speed, temperature, etc..,) therefore the lengths indicated above are referred to the mechanical length of the shock absorber, not to be confused with the actual cushioning length. 7 Stroke The stroke can vary depending on the bores and the construction series. The minimum stroke for the MP magnetic cylinders is 20 mm so as to avoid the interference of the magnetic field with the sensors. For particularly long strokes pay attention to the type of anchoring so as to avoid radial loads and bending moments which can interact with the rod-piston guide causing early wear and tear. In relation to the bore and to the type of anchoring with very long strokes, cross-pieces are inserted externally on the sleeve in order to keep the tie-rods taut and make the assembly of the cylinder compact. 8 Spacers For strokes over 1000 mm, suitable spacers are mounted inside the cylinder so as to increase the guide for the rod and of the piston in order to avoid undesired wear. Tab. 8.1 STROKES (MM) SPACER (MM) > Contact our Technical Dept. 9 Sealing O-rings STANDARD = POLYURETHANE - NITRILE RUBBER Used in the majority of the various types of cylinders, they ensure optimal sealing even in intermediate standing, guarantee a long duration and good efficiency at medium temperatures up to 80 C. They have an acceptable friction coefficient and ensure good translation rates up to 0.4 m/s. VITON (W) = ELASTOMERS, ETHYLENE PROPYLENE Reliable at both low and high temperatures (-20 / +150 C); optimal duration over time; good translation rates up to 0.4 m/s; particularly adapted to more frequently used fluids such as water-glycol (HFC). Leaks can occur at low pressure; not suitable for intermediate standing. LOW FRICTION (Y) = THERMOPLASTICS P.T.F.E. LOADED IN BRONZE Suitable for high rates up to 5 m/s and low rates from 0.01 m/s; good resistance to medium temperatures up to 90 C, excellent duration over time. Lack of elasticity can cause leaks, therefore they are not suitable for intermediate standing. For the use of fluids, temperatures, speed rates and particular pressure values contact our Technical Department. 37

39 Features and selection of a cylinder 10 ROD END The rod ends rod are manufactured according to the ISO 6020/2 standards, in the following manner: STANDARD SF ST (male thread) (female thread) (end with floating joint*) Tab ROD A B f CH KK M10x1.25 M12x1.25 M14x1.5 M16x1.5 M20x1.5 M27x2 M33x2 M42x2 M48x2 M64x3 M80x3 M100x3 KF M8x1 M10x1.25 M12x1.25 M16x1.5 M20x1.5 M27x2 M33x2 M42x2 M48x2 M64x3 M80x3 M100X3 M N 6, O P PISTON Stelo VD ROD END DIN Ends with male thread and female thread can be manufactured according to DIN standard. Consult our Technical Department. 11 SPECIAL EXECUTION SX Special versions means all those not included in the measures and/or figures of this catalogue. 38

40 Features and selection of a cylinder 11.1 CONNECTIONS They are designed to hydraulically feed the cylinder from both sides and sized for a maximum travel speed of 0.5 m/s. On request they can be made in the position shown in the figure or increased as per the table below. INCREASED CONNECTIONS SERIES BORE FRONT REAR CP MP DP / G 3/8" 40 / G 1/2" / G 3/4" / G 1" G 1 1/4" G 1 1/4" 200 G 1 1/2" G 1 1/2" Not valid for anchoring E Standard feed: position 1 Standard braking: position 3 - excluding anchoring E : position 2 (double rod in position 2 and 4) For every other type of execution (extended rod - rod end - anchoring modifications - treatment etc...), please consult our Technical Department. They will submit you a drawing for your approval. X ANCHORING (ISO MX5) CP-MP DP (*) = Dimension not compliant with ISO 6020/ Insert closing flange (dimension F) to make the WF and B comply with standard ISO 6020/2 DP series cylinders: for front head, F and g are replaced by GA - WF is replaced by WH AL. Ø d AA BG E EE F G GA H KB PJ + RT TG WF WH XB (*) Y ZJ G1/ (*) M5 28, (*) G1/ , (*) M6 33, (*) G3/ (*) M8 41, (*) G1/ (*) M12 52, (*) G1/ (*) M12 64, (*) G3/ (*) M16 82, (*) G3/ (*) M16 96, (*) G M22 125, G M27 154, G1 1/ M30 190,

41 'A' anchoring (ISO ME5) CP-MP- DP (*) = Dimension not compliant with ISO 6020/ (**) = Dimension corresponding to the upper diameter according to ISO 6020/2 AL. Ø d E EE F FB G H JA KB PJ + R RD TO UO WF Y ZJ + ZJ G1/4 10 5, (*) (*) G1/4 10 6,6 35,5 5 35, (*) (*) G3/ (*) (*) G1/ (*) (*) G1/ (*) (**) (*) G3/ (*) (**) (*) G3/ (*) (**) (*) G (**) G (**) G1 1/ (**) 'a' anchoring (ISO MS2) CP-MP DP (*) = Dimension not compliant with ISO 6020/ AL. Ø d E EE F G GA H JA LH PJ + SB SS + ST TS US WF WH Y ZJ G1/ (*) 6,6 73 8, (*) G1/ ,5-5 35, (*) , (*) G3/ (*) , (*) G1/ (*) (*) G1/ (*) (*) G3/ (*) (*) G3/ (*) (*) G G G1 1/

42 REED sensors The limit switch is made up of a Reed contact soaked in synthetic resin; when close to a magnetic field (permanent magnet mounted on the piston), the contact closes generating an electric signal. Type STCW with two wires with soaked cable (* per combination with Viton seals and temperatures up to 120 ) Type STCM8 with three wires with connecter (temperatures up to 85 ) Technical Characteristics FEATURES / CODE STCW STCM8 Work voltage 0-30 V ac/dc 5-30 V dc Reed current (max) 500 Ma 250 Ma Reed power (max) 10 W 10 va 10 W 8 va Light indicator (led) None Yellow Cable Pur 2x0,14mm² Pvc/pur 3x0,14mm² Cable length 2,5 M 0,15 M Fixing Male M8 Connector Working temperature -40 C / +120 c -20 C / +85 c Degree of protection IP67 IP67 CONNEctors FEATURES / CODE CONN CONN5 Length 2 M 5 M Fixing M8 female M8 female N poles 3 3 brackets FEATURES / CODE S70 S165 Depending on the bore diameter

43 hydraulic cylinders for moulds ISO 6020/2 Inductive sensors: The limit switch is made up of a an oscillating circuit coil with ferromagnetic shielding; when getting close to a magnetic field (permanent magnet assembled on a piston), a specific intensity of the magnetic field causes a partial saturation of the shield that acts on the current of the oscillator circuit. This variation of current is transformed into an exit signal via an amplifier. Warnings for the use of the magnetic cylinders The magnetic field measured on the outside of the cylinder sleeve extends for around 5 mm in length, therefore pay attention to the mechanical positioning of the sensor so that the signal is generated as close to the length desired as possible. The magnetic cylinders (equipped with their limit switches) must be installed at a minimum distance of 30 mm from each other. If the magnetic cylinder is positioned in the cavity of a magnetic absorption ferrous system, a minimum distance of 20 mm must be kept from the external movement range of the cylinder to the metal wall immediately closer (excluding the fixing wall), so as to avoid deformation of the magnetic field and subsequent non activation of the sensors. It is advisable not to use magnetic limit switch cylinders in proximity of strong magnetic fields (e.g. resistance welding machines). The maximum current, working voltage and maximum power of contact switching must not be exceeded for any reason. In the event of inductive loads, at the moment of disengaging, a high peak voltage is produced (see solenoid valve bobbins); a suitable protection circuit (R-C) or varistor must therefore be arranged to protect the sensor. The same effects occur when the wires of the sensor exceed 5 m in length. The inrush power (relay - fuse - filament lamp) is considerably higher (8-10 times) than the normal working power; the sensor must therefore be selected based on the inrush value. For bench adjustment of the position of the sensors, use of a ohmic tester is recommended. Connection in series of the sensors The SR reed sensors (with two wires) allow series connection. Since voltage decreases by about 4 V per sensor, a maximum of 2 sensors can be connected, provided that the feed voltage is not lower than 24 VDC. If you need 3 or more sensors to be connected in series, then use 3-wire sensors. 42

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46 PEDROTTI NORMALIZZATI - MECCANICA HEAD OFFICE: Via della Ferrovia, 1/3/ Gavardo (Bs) Italia Production Dept.: Via della Ferrovia, 1/3/ Gavardo (Bs) Italia Via IV Novembre, Prevalle (Bs) Italia Administration and HR: Tel Fax amministrazione@pedrotti.it personale@pedrotti.it Sales: Tel Fax vendite@pedrotti.it meccanica@pedrotti.it