MY1B - SMC

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Series MY1MCushion CapacityCushion SelectionAir cushions are a standard feature onmechanically jointed rodless cylinders. Theair cushion mechanism is incorporated toprevent excessive impact of the piston atthe stroke end during high speedoperation. The purpose of air cushion,thus, is not to decelerate the piston nearthe stroke end. The ranges of load andspeed that air cushions can absorb arewithin the air cushion limit lines shown inthe graphs.Use this unit when operating with a load orspeed exceeding the air cushion limit line,or when cushioning is required outside ofthe effective air cushion stroke range dueto stroke adjustment.Use 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.Use 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 whenusing the adjusting bolt toperform stroke adjustment.When the effective stroke of the shockabsorber decreases as a result of strokeadjustment, the absorption capacitydecreases dramatically. Secure theadjusting bolt at the position where itprotrudes approximately 0.5 mm from theshock absorber.Adjusting boltAbsorption Capacity of Air Cushion and Stroke Adjusting UnitsMY1M16Collision speed mm/sMY1M20Collision speed mm/s200015001000500400300200100MY1M25Collision speed mm/s2000150010005004003002001000.5200015001000500400300200100Horizontal collision: P = 0.5 MPaL unitAir cushion1 2 3 4 5 10 20 30m3 max. m2 max.Load mass kgHorizontal collision: P = 0.5 MPa1 2 3 4 5 10 20 30 400 50m3 max. m2 max.Load mass kgHorizontal collision: P = 0.5 MPaL unitAir cushionm1 max.H unitL unitAir cushionm1 max.H unit1 2 3 4 5 10 20 30 40 50MY1M32Collision speed mm/s2000150010005004003002001002 3 4 5 10 20 30 40 50MY1M40Collision speed mm/s2000150010005004003002001002 3 4 5 10 20 50MY1M50Collision speed mm/s200015001000500400300200Horizontal collision: P = 0.5 MPaAir cushionm3 max. m2 max.Load mass kgHorizontal collision: P = 0.5 MPaAir cushionm3 max. m2 max.Load mass kgHorizontal collision: P = 0.5 MPaAir cushion1002 3 4 5 10 20 30 40 50H unitL unitL unitm1 max.H unitm1 max.H unitL unit1001000.5m3 max. m2 max.Load mass kgm1 max.m3 max.Load massm2 max. m1 max.kgShock absorberMY1M63Horizontal collision: P = 0.5 MPa2. Do not use a shock absorber togetherwith air cushion.Air Cushion Stroke (mm)Bore size (mm)16202532405063Cushion stroke12151519243037Collision speed mm/s2000150010005004003002001002 3 4 5 10 20 30 50 100m3 max.Load massm2 max.kgH unitL unitAir cushionm1 max.984
Mechanically Jointed Rodless CylinderSlide Bearing Guide TypeSeries MY1MTightening Torque for StrokeAdjusting Unit Holding Bolts (N . m)Bore size (mm)Calculation of Absorbed Energy for StrokeAdjusting Unit with Shock Absorber(N . m)Type ofimpact16202532405063Kinetic energyE1Thrust energyE2Absorbed energyEHorizontalcollisionUnitALALHALHALHALHALHALHVertical(Downward)Tightening torque0.71.83.55.85.813.813.813.827.5Tightening Torque for Stroke AdjustingUnit Lock Plate Holding BoltsBore size (mm)253240υ msUnitLHLHLHυ m1–– m·υ22(N . m)Tightening torque1.23.33.3103.310sVertical(Upward)sυ mF·s F·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.PrecautionsBe 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 stroke adjustingunit, the space between the slide table(slider) and the stroke adjusting unitbecomes narrow at the stroke end, causinga danger of hands getting caught. Install aprotective cover to prevent direct contactwith the human body.Adjusting boltLock nutLock plateThe unit can be secured by evenlytightening the four unit holding bolts.CautionUnit holding boltLock plateholding boltShock absorberDo not operate with the strokeadjusting unit fixed in anintermediate position.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”.)Note) Although the lock plate may slightly benddue to tightening of the lock plate holdingbolt, this does not a affect the shockabsorber and locking function.985<strong>MY1B</strong>MY1MMY1CMY1HMY1HTMY1WMY2CMY2HMY3AMY3BMY3MD--XIndividual-XTechnicaldata
Page 1 and 2: Mechanically Jointed Rodless Cylind
Page 3 and 4: Basic type MY1B104027Height 27 mm30
Page 9 and 10: MY1BSeriesBasic Typeø10, ø16, ø2
Page 33 and 34: MY1MSeriesSlide Bearing Guide Type
Page 41: MY1BMY1MMY1CMY1HMY1HTMY1WMY2CMY2HMY
Page 53 and 54: MY1CSeriesCam Follower Guide Typeø
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Page 73 and 74: MY1HSeriesLinear Guide Typeø10, ø
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SMCSMCMechanically Jointed Rodless
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Mechanically Jointed Rodless Cylind
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MY1HTSeriesHigh Rigidity/Linear Gui
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Series MY1Specific Product Precauti
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MY1B - SMC

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