MY1B - SMC

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Series MY1CCushion CapacityCushion SelectionAir cushions are a standard feature onmechanically jointed rodless cylinders.The air cushion mechanism isincorporated to prevent excessive impactof the piston at the stroke end during highspeed operation. The purpose of aircushion, thus, is not to decelerate thepiston near the stroke end.The ranges of load and speed that aircushions can absorb are within the aircushion limit lines shown in the graphs.Use this unit when operating with a load orspeed exceeding the air cushion limit line,or when cushioning is necessary becausethe cylinder stroke is outside of theeffective air cushion stroke range due tostroke adjustment.L unitUse this unit when the cylinder stroke isoutside of the effective air cushion rangeeven if the load and speed are within theair cushion limit line, or when the cylinderis operated in a load and speed rangeabove the air cushion limit line or belowthe L unit limit line.H unitUse this unit when the cylinder is operatedin a load and speed range above the L unitlimit line and below the H unit limit line.Caution1. Refer to the figure below when using theadjusting bolt to perform strokeadjustment.When the effective stroke of the shockabsorber decreases as a result of strokeadjustment, the absorption capacitydecreases dramatically. Secure the adjustingbolt at the position where it protrudesapproximately 0.5 mm from the shockabsorber.Adjusting boltAbsorption Capacity of Air Cushion and Stroke Adjusting UnitsMY1C16Collision speed mm/sMY1C20Collision speed mm/s Collision speed mm/s200015001000500400300200200015001000500400300200100MY1C322000150010005004003002001002 3 4 5 10 20 30MY1C402000150010005004003002001002 3 4 5 10 20 50MY1C25 Horizontal collision: P = 0.5 MPa MY1C50 Horizontal collision: P = 0.5 MPa200015001000500400300200Horizontal collision: P = 0.5 MPa1000.5 1 2 3 4 5 10 20 30m3 max. m2 max. m1 max.Horizontal collision: P = 0.5 MPa1 2 3 4 5 10 20 30 40 50m3 max.L unitAir cushionm2 max.L unitAir cushionH unitL unitH unitAir cushionm1 max.Collision speed mm/s200015001000500400300200Horizontal collision: P = 0.5 MPam3 max.m3 max.Air cushionLoad mass kg Load mass kgCollision speed mm/sLoad mass kg Load mass kgCollision speed mm/sH unitL unitm2 max. m1 max.L unitAir cushionm2 max. m1 max.H unitAir cushion40 50H unitL unit100Horizontal collision: P = 0.5 MPa0.51001 2 3 4 5 10 20 30 40 501002 3 4 5 10 20 30 40 50100m3 max. m2 max.Load mass kgm1 max.m3 max.Load massm2 max.kgm1 max.Shock absorber2. Do not use a shock absorber togetherwith air cushion.Air Cushion StrokeBore size (mm)16202532405063(mm)Cushion stroke12151519243037MY1C63Collision speed mm/s200015001000500400300200Horizontal collision: P = 0.5 MPa1002 3 4 5 10 20 30 40 50 100m3 max.Load massm2 max. m1 max.kgAir cushionH unitL unit1004
Mechanically Jointed Rodless CylinderCam Follower Guide TypeSeries MY1CTightening Torque for StrokeAdjusting Unit Holding BoltsBore size (mm)16202532405063UnitALALHALHALHALHALHALH(N·m)Tightening torque0.71.83.55.85.813.813.813.827.5PrecautionsBe sure to read before handling. Referto front matters 54 and 55 for SafetyInstructions and pages 3 to 11 forActuator and Auto Switch Precautions.CautionUse caution not to get your handscaught in the unit.• When using a product with strokeadjusting unit, the space between the slidetable (slider) and the stroke adjusting unitbecomes narrow at the stroke end,causing a danger of hands getting caught.Install a protective cover to prevent directcontact with the human body.Adjusting boltLock nutUnit holding boltLock plateholding boltNote) Although the lock plate may slightlybend due to tightening of the lockplate holding bolt, this does not aaffect the shock absorber andlocking function.<strong>MY1B</strong>MY1MMY1CMY1HMY1HTMY1WMY2CMY2HMY3AMY3BTightening Torque for Stroke AdjustingUnit Lock Plate Holding BoltsBore size (mm)Calculation of Absorbed Energyfor Stroke Adjusting Unitwith Shock Absorber(N·m)Type ofimpactKinetic energyE1Thrust energyE2Absorbed energyE253240Horizontalcollisionυ mF·ssUnitLHLHLHVertical(Downward)12υ msm·υ 2(N·m)Tightening torque1.23.33.3103.310Vertical(Upward)sυ mF·s + m·g·s F·s – m·g·sE1 + E2Symbolυ: Speed of impact object (m/s)F: Cylinder thrust (N)s: Shock absorber stroke (m)m: Mass of impact object (kg)g: Gravitational acceleration (9.8 m/s 2 )Note) The speed of the impact object is measured atthe time of impact with the shock absorber.Lock plateCautionShock absorberThe unit can be secured by evenlytightening the four unit holding bolts.Do not operate with the strokeadjusting unit fixed in an intermediateposition.When the stroke adjusting unit is fixed inan intermediate position, slippage canoccur depending on the amount of energyreleased at the time of an impact. In suchcases, the use of the adjusting boltmounting brackets, available per made-toorderspecifications -X416 and -X417, isrecommended.For other lengths, please consult with <strong>SMC</strong>(Refer to “Tightening Torque for StrokeAdjusting Unit Holding Bolts”.)Loosen the adjusting bolt lock nut, andadjust the stroke from the lock plate sideusing a hexagon wrench. Retighten thelock nut.Loosen the two lock plate holding bolts,turn the shock absorber and adjust thestroke. Then, uniformly tighten the lockplate holding bolts to secure the shockabsorber.Take care not to over-tighten the holdingbolts. (Except ø16, ø20, ø50, ø63)(Refer to “Tightening Torgue for StrokeAdjusting Unit Lock Plate Holding Bolts”.)1005MY3MD--XIndividual-XTechnicaldata
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Mechanically Jointed Rodless Cylind
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Basic type MY1B104027Height 27 mm30
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MY1BSeriesBasic Typeø10, ø16, ø2
Page 11 and 12: Mechanically Jointed Rodless Cylind
Page 33 and 34: MY1MSeriesSlide Bearing Guide Type
Page 41 and 42: MY1BMY1MMY1CMY1HMY1HTMY1WMY2CMY2HMY
Page 53 and 54: MY1CSeriesCam Follower Guide Typeø
Page 61: MY1BMY1MMY1CMY1HMY1HTMY1WMY2CMY2HMY
Page 73 and 74: MY1HSeriesLinear Guide Typeø10, ø
Page 83 and 84: Series MY1HSpecific Product Precaut
Page 93 and 94: SMCSMCMechanically Jointed Rodless
Page 97 and 98: MY1HTSeriesHigh Rigidity/Linear Gui
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Series MY1Specific Product Precauti
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MY1B - SMC

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