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socket head cap bolt Chrome molybdenum steelHard steelSpring washerAluminum alloyBoss mount ringRolled steelFlangeHex. socket head cap bolt Chrome molybdenum steelAluminum alloySpacer for switchPhosphor bronzeCoil scraperNBRPiston sealNBRGasketNBRRod sealNBRO ringReplacement Parts: Seal KitsBore size (mm)Part no.Contents!3Component Partsø63MK-63-PSNoteOnly ø40 to ø63Except for ø12, ø16Except ø12, ø16ø25, 25: 2Quantityø32 to 63: 4Only ø12, ø16Rotary Clamp Cylinder/StandardPrecautionsSeriesMKPrecautions for Designing and Mounting ArmsWhen arms are to be made separately, their length and weight should be within the following range.Be sure to read before handling.Refer to p.0-39 to 0-46 for SafetyInstructions and common precautions onthe products mentioned in this catalog.1.
Allowable bending momentUse the arm length and operating pressure within graph 1 for allowable bendingmoment loaded piston rod.Graph 1CautionMK/MK2Mounting of Clamp Armq Use a clamp arm that is available as an option.To fabricate a clamp arm, make sure that theallowable bending moment and the inertialmoment will be within the specified range. If aclamp arm that exceeds the specified value isinstalled, the internal mechanism in the cylindercould become damaged.RSWhen arm length is 8cm, pressure should beless thanMK20/25: 0.45MPaMK32/40: 0.55MPaMK50/63: 0.8MPaq If one side of the piston is pressurized bysupplying air with the clamp arm attached, thepiston will move vertically while the clamp armrotates.
This operation could be hazardous topersonnel, as their hands or feet could getcaught by the clamp arm, or could lead toequipment damage. Therefore, it is important tosecure as a danger zone a cylindrical area withthe length of the clamp arm as its radius, andthe stroke plus 20mm as its height.MTSC..SMQRHCInstallation and Adjustment/Regarding Clamp Arm Removal and ReinstallationCC2. Moment of inertiaWhen the arm is long and heavy, damage of internal parts may be caused due to inertia.Use the inertia moment and cylinder speed within graph 2 based on arm requirements.Graph 2Mounting bolt for MKBMounting method: A through hole mounting bolt isavailable.How to order: Suffix “(MKB)” to the size of bolts tobe used.When arm's inertia is 3 X 10–4kg·m2, cylinderspeed should be less thanMK20/25: 65mm/sMK32/40: 150mm/sRefer to p.4.1-21 for calculating moment ofinertia.Example) M5 X 75l (MKB)Mounting boltCDFlat washerNote) Be sure to use a flat washer to mount ø12and ø16 cylinders via through holes.Part No.MKB12-10MKB12-20MKB16-10MKB16-20MKB20-10MKB20-20MKB25-10MKB25-20MKB32-10MKB32-20MKB40-10MKB40-20MKB50-20MKB50-50MKB63-20MKB63-50C888.58.510910.576.511.510.5D50605060758575858595758595130100130Mounting boltM3 X 50lM3 X 60lM3 X 50lM3 X 60lM5 X 75lM5 X 85lM5 X 75lM5 X 85lM5 X 85lM5 X 95lM5 X 75lM5 X 85lM6 X 95lM6 X 130lM8 X 100lM8 X 130lRECC..XEnsuring Safetyq During the removal or reinstallation of the clamparm, make sure to use a wrench or a vise tosecure the clamp arm before removing ortightening the bolt.
This is to prevent the bolttightening torque from being applied to thepiston rod, which could damage the cylinder'sinternal mechanism.RETo attach and detach the arm to and from thepiston rod, fix the arm with a wrench or vise andthen tighten the bolt. (Excessive force in thedirection of rotation applied to the piston rod maydamage the internal mechanism.)Refer to the following table for the tightening torque Wrenchfor mounting.NmBore size (mm)121620, 2532, 4050, 63AllenwrenchArmStandard tightening torque0.4 to 0.62 to 2.44 to 68 to 1014 to 164.1-7MKSeriesø12, ø16, ø20, ø25Through hole (Basic)/MKBNote: Actuators are drawn/shown in theirretractesor clamping position.ø12ø162-M5 X 0.8D –0.1–0.05øHøGh90.52.523ModelABMKB12 25MKB16 29CDEFG50M3 X 0.5 5.5 11h9 –0.04363870M5 X 0.8 6.5 14h9 –0.0438C516A35.5+Clamp strokeH32 15.5202 X 4-M4 X 0.7Effective depth 7øB4-ø3.5E effective thread depth FFlat washer4 pcs.Auto switchMinimum bending radiusof lead wire 1048+2 X Clamp stroke2 X 4-ø6.5Counter bore depth 4With arm/MK 1216 -NNOPQ29204 M3 X 0.5 836255 M4 X 0.7 11M+Clamp strokeSNORPMMKB12-N 18.5 8MKB16-N 21.5 11ModelQø20, ø2518 – (0 to 10)SR threadAuto switchMinimum bendingradius of lead wire 10In case of connector22FøOh9E11ø12L(2)M8 X 1.25Effective thread depth 112-ø5.5 through2 X 2-ø9 depth 7counter boreUF10 –0.1–0.22-M5 X 0.8K5.5SR + Clamp strokeB4K3Cdepth 3L32-ø3.3 +0.15+0.05Q + 2 X Clamp strokeABoth ends tapped/MKA10M6 X 1.010R + Clamp stroke(Basic)ModelABCEFMKB20MKB203646.8364824.513.5K40524053.827.516±0.15±0.15LOh9QRSU7.5 ±0.1520 –0.052072.562314073.5633258 ±0.1523 –0.052Note 1) Above figure is for D-A73, A80.Note 2) Dimensions E and F are 7 mm longer for the auto switches with connector (D-A7C, A80C, J79C).Note 3) When the rod is extended, the clamp stroke and rotary stroke are added to the appropriate dimensions.4.1-8Rotary Clamp Cylinder/StandardRear flange/MKGSeriesMKRear boss mounting+0.152-ø6.3 +0.05(Knock pin hole)2-M6 X 1.0(Special cap bolt)2-ø6.6MK/MK2REBRECøAh9ERSC..X2R + Clamp strokeDMTS8CC..SMQModelBCMKG20MKG2560396442DModelE25.5 ±0.1 48 ±0.1528±0.152MK20-FMK25-F±0.15Ah9RHC013 –0.043015 –0.043CCArm for width across flats2025Rod end width across flats/MK 2025 -MWith arm/MK -N2-ø5.222 + Clamp strokeø101432348.5 17475142.5 + Clamp stroke22-(0 to 10)16M6 X 1.0Mounting arms for width across flats∗When installing the arm for the parallel section at the rod end, thestrength of the piston rod may be insufficient depending on thedirection in which the arm is installed.
Therefore, make sure to installthe arm in the direction indicated in diagram A.4.1-9MKSeriesø32, ø40, ø50, ø63Through hole (Basic)/MKBNote: Actuators are drawn/shown in theirretractesor clamping position.Both ends tapped/MKAA screwModelBBR + Clamp stroke(Basic)ModelABCDEFGHIJKLOPQRSTUAVXYh9Z0±0.15MKB32 45 60 34 14 –0.17 ±0.15 18 4.5 93.5 71.5 37 7.5 16 Rc(PT)1/8 3 30 –0.062 6.5–0.2 54 31.5 5.5 9 Depth 7 M10 X 1.5 12 20±0.15MKB40 52 69 40 14 –0.17 ±0.15 18 5 94.5 65 29.5 8–0.2 61 35 5.5 9 Depth 7 M10 X 1.5 12 24MKB50 64 86 50MKB63 77 103 60–0.117 –0.2–0.117 –0.27341 6.6 11 Depth 8 M12 X 1.75 15 3086 47.59 14 Depth 10.5 M12 X 1.75 15 35±0.15±0.1589±0.15±0.154.1-1016 Rc(PT)1/8 3227 112 76.5 34 10.5 20 Rc(PT)1/4 3.5227 115 80Note 1) Above figure is for D-A73, A80.Note 2) Dimensions E and F are 7 mm longer for the auto switches with connector (D-A7C, A80C, J79C).Note 3) When the rod is extended, the clamp stroke and rotary stroke are added to the appropriate dimensions.BMKA 32M6 X 1.0 1040MKA50 M8 X 1.25 14MKA63 M10 X 1.5 1835 10.5 20 Rc(PT)1/4 3.5030 –0.062 6.5037 –0.062048 –0.0627.57.5Rotary Clamp Cylinder/StandardRear flange/MKGSeriesMKRear boss mounting+0.152-ø6.3 +0.05(Knock pin hole)øAh9BE4-G (special cap bolt)MK/MK2RS2D4-øFRER + Clamp stroke ARECCModelMKG32MKG40MKG50MKG63ABCDE8654834 ±0.1±0.187254409896750 ±0.1108 80±0.1960FG56 ±0.15 5.5 M6 X 1.062 ±0.15 5.5 M6 X 1.076 ±0.15 6.6 M8 X 1.2592 ±0.15 9 M10 X 1.5ModelMK32-FMK40-FMK 5063 -FC..XAh9021 –0.052MTS028 –0.052035 –0.062C..SArm for width across flatsWith armMQRod end width across flatsF + Clamp strokeRHC2-øGCCøBAC + Clamp strokeE10ABDDFG-(0 to 10)ModelMK32-NMK40-NMK50-NMK63-NFGHABCD18672045 35.5 25M8 X 1.25186720454325M8 X 1.25228822655340M10 X 1.522882265 52.5 40M10 X 1.5ModelMK32-MMK40-MMK50-MMK63-MABDEFG614 53.5 36C1896.261461361896.2818774623 11.5 8.2818 76.5 4623 11.5 8.2Mounting arms for width across flats∗When installing the arm for the parallel section atthe rod end, the strength of the piston rod might beinsufficient depending on the direction in which thearm is installed.
Therefore, make sure to install thearm in the direction indicated in diagram A.4.1-11SeriesMKAuto Switch SpecificationsRefer to the p.5.3-2 for details of auto switch.Applicable Auto SwitchStyle Auto Switch ModelSolid state switchReed switchD-A7, A8D-A7쏔H, A80HD-A73C, A80CD-A79WD-A9쏔D-A9쏔VD-F7쏔, J79D-F7쏔VD-J79CD-F7쏔W, J79WD-F7쏔WVD-F7BALD-F7쏔FD-F7NTLD-F9쏔D-F9쏔VD-F9쏔WD-F9쏔WVD-F9BALD-F5DWLAuto Switch MountingRefer to p.5.3-74 regarding how to mountauto switch.Electrical entry (Function)Bore sizeGrommet (Perpendicular)Page5.3-14Grommet (In-line)ø20 to ø63Connectorø12, ø16ø32 to ø63Grommet (Perpendicular)5.3-165.3-26Grommet (2 colour indication, perpendicular)Grommet (In-line)5.3-155.3-195.3-20Grommet (In-line)5.3-34Grommet (Perpendicular)5.3-35Connector5.3-36Grommet (2 colour indication, in-line)Grommet (2 colour indication, perpendicular)ø20 to ø635.3-445.3-45Grommet (2 colour, water resistant, in-line)5.3-57Grommet (2 colour, diagnostic output, in-line)5.3-53Grommet (With timer, in-line)5.3-60Grommet (In-line)5.3-39Grommet (Perpendicular)Grommet (2 colour, in-line)Grommet (2 colour, perpendicular)ø12, ø16ø32 to ø635.3-665.3-665.3-67Grommet (2 colour, water resistant, in-line)Grommet (2 colour, strong magnetic field resistant, in-line)5.3-39ø40 to ø635.3-64Auto Switch Mounting Position (Stroke end)ø20, ø25ø32 to ø63PrecautionsBe sure to read before handling.Refer to p.0-44 to 0-46 for commonprecautions.MountingD-A7, A8ModelMK쏔20MK쏔25MK쏔32MK쏔40MK쏔50MK쏔63A2828.532.523.52828B6.5768.511.514.5Rail mountingD-F7BALD-A7쏔H, A80HD-F7PWD-A73C, A80CD-F7쏔FD-A79WD-F7쏔, J79D-J79WD-F7쏔V, J79CD-F7쏔WVABABAB28.5 7 25.5 4 32.5 1129 7.5 26 4.5 33 11.533 6.5 30 3.5 37 10.5242128 139628.5 12 25.5 9 32.5 1628.5 15 25.5 12 32.5 19Direct mountingD-P5DWD-F9쏔D-A9쏔D-F9쏔WD-F9쏔VD-A9쏔V D-F9쏔WV D-F9BALAB— —— —— —19.5 4.524 7.524 10.5AB— —— —31.5 522.5 7.527 10.527 13.5ABBA— — — —— — — —35.5 9 34.5 826.5 11.5 25.5 10.531 14.5 30 13.531 17.5 30 16.5Mounting쐌 As shown in the drawing below, when amagnetic body is in close contact with thecylinder body periphery (including the casewhere only one side is in contact), the functionof the auto switch may be unstable.
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