Hydraulic cylinders type CC - round heads with counterflanges to ISO nominal pressure 25 MPa (250 bar) - max 32 MPa (320 bar)

Transcription

1 Table B-/E Hydraulic cylinders type CC - round heads with counterflanges to ISO 60 - nominal pressure MPa (0 bar) - max MPa (0 bar) SWC Cylinders Designer Software for assisted selection of Atos cylinders & servocylinders codes, including cylinder s sizing, full technical information, D & D drawings in several CAD formats. Available for download at CC cylinders have engineered double acting construction, designed to suit the requirements of industrial heavy duty applications: top reliability, high performances and long working life. Bore sizes from 0 to 0 mm Rods with rolled threads 6 standard mounting styles seals options Adjustable cushioning Rod guide rings for low wear Optional built-in position transducer, see tab. B0 Attachments for rods and mounting styles, see tab. B00 For cylinder s choice and sizing criteria see tab. B0 MODEL CODE CC P - 0 / 6 * S 0 A - - BEXZ ** Series number () Cylinder series CC to ISO 60 Rod position transducer - = omit if not requested F = magnetosonic M = magnetosonic programmable N = magnetostrictive P = potentiometric V = inductive Transducer available on request, contact our technical office Bore size, see section from 0 to 0 mm Rod diameter, see sections 7 and 9 from 6 to 0 mm Heads configuration (), see section Oil ports positions B = front head X = rear head Cushioning adjustments positions E = front head Z = rear head Options (): Oversized oil ports, see section D = front oversized oil port = rear oversized oil port Flange oil ports, see section 6 M = front and rear SAE 6000 flange oil ports Rod treatment, see section 9 K = nickel and chrome plating T = induction surface hardening and chrome plating Air bleeds, see section A = front air bleed W = rear air bleed Draining, see section L= rod side draining Stroke, see section up to 000 mm Sealing system, see section = (NBR + + POLURETHANE) high static and dynamic sealing = (FKM + ) very low friction and high temperatures = (NBR + ) very low friction and high speeds Mounting style, see sections and A =front flange B =rear flange L =intermediate trunnion S =fixed eye with spherical bearing X =basic execution Z =front threaded REF. ISO MF MF MT () MP - MX Spacer, see section 0 = none = 0 mm = 00 mm 6 = 0 mm 8 = 00 mm Cushionings, see section 0 = none Slow adjustable = rear only = front only = front and rear 0 () For spare parts request indicate the series number printed on the nameplate only for series < 0 () To be entered in alphabetical order () XV dimension must be indicated in the model code, see section B

2 β β MOUNTING STLE - for dimensions see section 9 PJ + E ZB + X = basic mounting PJ + FB B VD NF WC ZB + FC UC A (ISO MF) = front flange mounting PJ + FB BA ZP + NF FC UC B (ISO MF) = rear flange mounting PJ + TD UV XV ZB + TL TM UM TL L (ISO MT) = intermediate trunnion mounting EX PJ + CX EP XO + LT MS S (ISO MP) = fixed eye with spherical bearing mounting For bores up to RT AA PJ + BG ZB + For bores from 0 to 0 RT AA α Z = front threaded mounting α β

3 E INSTALLATION DIMENSIONS [mm] - see figures in section a, b,,, 6, 0, 0, 0 7,, 7,, 0, 0, 0 7, 8, 0 AA B / BA f8/h8 () NOTES TO TABLE () D, EE - Oil ports and drain are threaded according to GAS standard with counterbore dimension D according to ISO 79- (see figure below). When oversized oil ports are selected (D = front oversized oil ports, = rear oversized oil ports) dimensions D and EE are respectively modified into D and EE D EE BG min CX H D () E max () EE () 6g EE () 6g EP EX h FB H FC js LT min MS max MT [Nm] () NF js RT TD f8 TL js TM h D () PJ (6) G / G / G / G G G/ G/ G/ G/ G/ G/ G / G G G/ G/ G/ G/ G/ G/ G G ,, 7, (7) 6 (7) M8 M0 M M M6 n M6 n M8 n M0 n M n M7 n M () E - If not otherwise specified in the figures in section this value is the front and rear round heads dimension for all the mounting styles (see figure above) () MT - Screws tightening torque. Mounting screws must be to a minimum strength of ISO 898/ grade.9 () B, VE, WF - See figure in section 7 () XV - For cylinders with mounting style L the must always exceed the minimum values reported in the table. The requested XV value must be included between XV min and XV max and it must be always indicated, with dimension in millimeters, together with the cylinder code. See the following example: CC - 0 / 6 * L08 - A -BEXZ XV = 00 (6) The tolerance is according to the table below Mounting dimensions PJ, ZP, XO WF, WC, XV < 0 ±, ± 0 > < 0 ± ± > 0 ± ±8 (7) The dimension is not according to ISO 60 STROKE SELECTION Stroke has to be selected a few mm longer than the working, to prevent to use the cylinder heads as mechanical -end. The table below shows the minimum depending to the bore. Minimum [mm] Minimum Minimum UC max UM UV max VD VE max () WC (6) WF () (6) XO (6) Maximum : 000 mm Stroke tolerances: 0 + mm for s up to 0 mm 0 + mm for s from 0 to 0 mm 0 +8 mm for s over 0 mm SPACER For s longer than 000 mm, proper spacers have to be introduced in the cylinder s construction to increase the rod and piston guide and to protect them from overloads and premature wear. Spacers can be omitted for cylinders working in traction mode. The introduction of spacers increases the overall cylinder s dimensions: spacers lenght has to be added to all dependent dimensions in section. minimum for style L XV () (6) ± ZB max ZP (6) min max Spacer RECOMMENDED SPACERS [mm] Stroke Spacer code Length B

4 6 SAE 6000 FLANGE OIL PORTS - DIMENSIONS TO ISO 66- [mm] 0 (*) 6 (*) 80 DN 9 EC 6 6 EA ±0, 8,,8 EB ±0, 0, 0,8 ED 6g M8x, M0x, FF 0 / -, 9 CODE: M = Front and rear SAE 6000 flange oil ports Flange oil port allows an easy cylinder s connection to the piping system and it can work up to the maximum pressure MPa (0 bar) ,8 7, Mx,7 ED EC 0 8 FF ,6 66,6 Mx (**) EA EB ,7 79, M6x 8 0, 96,8 M0x, (*) SAE flange not available for style B (ISO MF) (**) Not compliance to ISO 66-7 ROD END DIMENSIONS [mm] A max A WL WF VE CH (*) 0 (*) B f8 KK CH KK 6g M7x Mx Mx M8x M6x M7x M80x M90x M00x Mx M60x WL min (*) n per key 8 CLINDER S HOUSING FEATURES The cylinder s housings are made in different materials depending to the bore; the internal surfaces are lapped: diameter tolerance H8, roughness Ra 0, µm. ø Bore Material Rs min [N/mm ] 000 Cold drawn and stressed steel Hot rolled steel 9 RODS FEATURES and options The rods materials have high strength, which provide safety coefficients higher than in static stress conditions, at maximum working pressure. The rod surface is chrome plated: diameter tolerances f7, roughness Ra 0, µm. Corrosion resistance of 00h in neutral spray to ISO 97 NSS. ø Rod Material Rs min [N/mm ] 60 Hardened and tempered alloy-steel Alloy steel Carbon steel 60 Chrome min thickness [mm] hardness [HV] 0, , Rod diameters from 6 to 70 mm have rolled threads; in rolling process the component material is stressed beyond its yield point, being deformed plastically. This offers many technical advantages: higher profile accuracy, improved fatigue working life and high wear resistance. See tab. B0 for the calculation of the expected rod fatigue life. Contact our technical office in case of heavy duty applications. Rod corrosion resistance and hardness can be improved selecting the options K and T (option K affects the strength of standard rod, see tab. B0 for the calculation of the expected rod fatigue life): K = Nickel and chrome-plating (for rods from 6 to 0 mm) Corrosion resistance (rating 0 to ISO 089): 0 h in acetic acid salt spray to ISO 97 AASS 000 h in neutral spray to ISO 97 NSS T = Induction surface hardening and chrome plating (for rods up to 0 mm) 6-60 HRC (6-697 HV) hardness ROD-PISTON COUPLING The rod and piston are mechanically coupled by a threaded connection in which the thread on the rod is at least equal to the external thread KK, indicated in the table 7. The piston is screwed to the rod by a prefixed tightening torque in order to improve the fatigue resistance. The stop pin y avoids the piston unscrewing.

5 0 CUSHIONINGS Cushionings are recommended for applications where: the piston makes a full with speed over than 0,0 m/s; it is necessary to reduce undesirable noise and mechanical shocks; vertical application with heavy loads. The -end cushionings are hydraulic dampers specifically designed to dissipate the energy of the mass connected to the cylinder rod, by progressively increasing the pressure in the cushioning chamber and thus reducing the rod speed before the cylinder s mechanical -end (see the graphics at side). See the tab. B0 for the max damping energy. The cylinder is provided with needle valve to optimize cushioning performances in different applications. The regulating screws are supplied fully screwed in (max cushioning effect). In case of high masses and/or very high operating speeds it is recommended to back them off to optimize the cushioning effect. The adjustment screw has a special design to prevent unlocking and expulsion. The cushioning effect is highly ensured even in case of variation of the fluid viscosity. is the total cushioning lenght. When the -end cushionings are used as safety devices, to mechanically preserve the cylinder and the system, it is advisable to select the cylinder s longer than the operating one by an amount equal to the cushioning lenght ; in this way the cushioning effect does not influence the movement during the operating Cushioning length [mm] front rear Speed Stroke Stroke-end Stroke-end POSITION OF THE OIL PORTS AND CUSHIONING ADJUSTMENTS FRONT HEAD: B = oil port position; E = cushioning adjustment position REAR HEAD: X = oil port position; Z = cushioning adjustment position. The oil ports and cushioning adjustment positions are only available, respectively, on sides and (see figure at side). Example of model code: CC-00/0 *000-S0 - A - BEXZ Pressure Stroke With cushioning Without cushioning SEALING SSTEM FEATURES The sealing system must be choosen according to the working conditions of the system: speed, operating frequencies, fluid type and temperature. Additional verifications about minimum in/out rod speed is warmly suggested, see tab. B0. Special sealing system for low temperature, high frequencies (up to 0 Hz), long working life and heavy duty are available, see tab. TB00. All the seals, static and dynamic, must be periodically replaced: proper spare kits are available, see section 8. Contact our technical office for the compatibility with other fluids not mentioned below and specify type and composition. See section for fluid requirements. Sealing system Material NBR + + POLURETHANE FKM + NBR + Features high static and dynamic sealing very low friction and high temperatures very low friction and high speeds Max speed [m/s] 0, Fluid temperature Fluids compatibility range -0 C to 8 C Mineral oils HH, HL, HLP, HLP-D, HM, HV, MIL-H-606 Mineral oils HH, HL, HLP, HLP-D, HM, HV, MIL-H C to 0 C fire resistance fluids HFA, HFB, HFC (water max %), HFD-U, HFD-R Mineral oils HH, HL, HLP, HLP-D, HM, HV, MIL-H-606 fire resistance fluids HFA, HFC (water max %), HFD-U -0 C to 8 C Friction pressure - bar, 0, Seals operating pressure - bar ISO Standards for seals Piston Rod ISO 7/ ISO 7/ ISO 7/ Seals, ISO 97/ ISO 7/ ISO 7/ 0 AIR BLEEDS CODES: A = front air bleed; W = rear air bleed The air in the hydraulic circuit must be removed to avoid noise, vibrations and irregular cylinder s motion: air bleed valves are recommended to realize this operation easily and safely. Air bleeds are positioned on side, see section. For a proper use of the air-bleed (see figure on side) unlock the grub screw y with a wrench for hexagonal head screws, bleed-off the air and retighten as indicated in table at side Screwing M8 x 0 M x 0 Tightening torque 0 Nm 0 Nm DRAINING CODE: L = rod side draining The rod side draining reduces the seals friction and increases their reliability; it is mandatory for cylinders with s longer than 000 mm, with rod side chamber constantly pressurized and for servocylinders. The draining is positioned on the same side of the oil port, between the wiper and the rod seals (see figure at side). It is recommended to connect the draining port to the tank without backpressure. Draining port is G/8. Wiper Draining port Rod seals FLUID REQUIREMENTS Cylinders and servocylinders are suitable for operation with mineral oils with or without additives (HH, HL, HLP, HLP-D, HM, HV), fire resistant fluids (HFA oil in water emulsion % water and -0% oil, HFB water in oil emulsion - 0% water, HFC water glycol - max % water) and synthetic fluids (HFD-U organic esters, HFD-R phosphate esters). The fluid must have a viscosity within and 00 mm /s, a temperature within 0 and 70 C and fluid contamination class ISO 9/6 according to ISO 06, achieved with in-line filters at µm. B

6 6 CLINDERS MASSES [kg] (tolerance ± %) MASS FOR STLE X for single rod ADDITIONAL MASSES depending on mounting styles and options [mm] [mm] for 00 mm each 00 mm more Styles A, B Style L Style S front cushioning rear cushioning each 0 mm spacer 0 6 8,9,77, 0,, 6 0,,7,96,6,8 0, 80 6,, 7,7 7,8, 0,, ,,,8 7,8 0,8,, ,7 6,68,0, 7, ,7,,09, 8, , 9,9 7,9 7,,7, ,,66 70,6,9,,9 00 0,9, 8, 69, 7, ,6 86,0 67 6, 0, , ,8 9, Note: the masses related to the other options, not indicated in the table, don t have a relevant influence on the cylinder s mass 7 CLINDER SECTION POS. DESCRIPTION MATERIAL POS. DESCRIPTION MATERIAL POS. DESCRIPTION MATERIAL Rod Chrome plated steel 0 NBR / FKM Cushioning adjustment plug Wiper NBR / FKM and Piston Seal FKM. Wiper Polyurethane Piston seal NBR / FKM and Cylinder housing Rod seal NBR / FKM and Piston guide ring NBR / FKM. Rod seal Polyurethane Screw stop pin Rear cushioning piston Rod bearing Bronze / Counterflange 6 Cushioning piston locking Anti-extrusion ring 6 Rear head / Cast iron 7 Screw stop pin 6 NBR / FKM 7 Front head / Cast iron 8 Screw class.9 7 Anti-extrusion ring 8 and anti-extrusion ring FKM and 9 Rod guide 8 NBR /FKM 9 Seeger 9 Front cushioning piston 0 Cushioning adjustment screw 8 SPARE PARTS - SEE TABLE SP-B Example for seals spare parts code Sealing system Cylinder series G - C C - 0 / 6-0 Serial number (indicate only for series <0) Bore size [mm] Rod diameter [mm] 06/7