New Mechanically Jointed Rodless Cylinders Basic short type (Rubber bumper) Series MY3A NEW Bore sizes ø20, ø32, ø50 added Basic standard type (Air cushion) Series MY3B NEW Bore sizes ø20, ø32, ø50 added Slide bearing guide type (Air cushion) Series MY3M Series Variations Series Type MY3A Piping type are new additions Bore size (mm) Rubber bumper Air cushion Stroke adjustment unit Shock absorber Basic short type MY3B MY3M 16 20 25 32 40 50 63 Centralized piping Basic standard type Standard piping Slide bearing guide type Side support Floating bracket Made to Order Page Long stroke -XB11 Shock Absorber Soft Type Note) -XB22 P.1 Helical insert threads -X168 Holder mounting bracket Note) -X416, -X417 Copper Free P.25 20Note) Except the MY3A Shock Absorber Soft Type Series RJ Installed Cylinder (-XB22 spec.) added Ȝ Ȝ Soft stopping enabled at stroke end. Two types of shock absorbers are selectable according to operating environment. CAT.ES20-165C

Floating Bracket Easy connection with external guide. Vertical and lateral mounting is possible. (Page 24) Stroke Adjustment Unit (MY3A/3B) (MY3B/3M) Side Support The cylinder tube can be fixed from the upper or lower side. (Page 23, 37) Auto Switch Centralized Piping Integrated piping in the head cover is possible. (Page 20, 21, 35) Can be mounted on both sides from the front direction. The uniquely designed piston shape enables reduction of the height and length as well as practical arrangement of the common piping passages, cushion mechanism and positioning mechanism. This has achieved drastic...

Series MY3 Model Selection The following are steps for selecting the MY3 series which is best suited to your application. Guideline for Tentative Model Selection Series Guideline for tentative model selection Type Stroke accuracy Use of external guide Direct loaded Note Table accuracy MY3A Basic short type Generally combined with a separate guide making it, by length, more compact. MY3B Basic standard type Generally combined with a separate guide, when stroke accuracy is required. MY3M Slide bearing guide type Mounting a work piece directly on the product, when stroke accuracy is required. Most...

Model Selection Series MY3 Warning Reduction circuits or shock absorbers may be necessary. If the driven object is fast, or the weight is large, the cylinder cushion alone may not be able to absorb the impact. In this case, install a reduction circuit before the cushion, or install an external shock absorber to reduce the impact. Please check the machine’s rigidity as well. Maximum operating speed How to mount a load Stroke positioning ∗ External shock absorbers must meet the characteristics listed on page 11. Cylinders may be damaged if shock absorbers that do not have the recommended characteristics...

Series MY3 Types of Moment and Load Weight Applied to Rodless Cylinders Multiple moments may be generated depending on the mounting orientation, load and position of the center of gravity. Coordinates and Moments Load Weight and Static Moment Ceiling mounting Horizontal mounting z M3: Yawing M1 M2 y m1 x g M3 M1 M2: Rolling z Z Y y m4 x g g: Gravitational acceleration M1 M2 Y x Vertical mounting y x X Y x M1: Pitching Wall mounting X y Note) Z x m2 x g Mounting direction Horizontal Static load m m1 M1 m1 x g x X Static M2 m1 x g x Y moment — M3 M3 M2 Ceiling m3 x g Wall X z Vertical m2 m3 m4...

Model Selection Series MY3 Calculation of Guide Load Factor 1 Operating Conditions Cylinder • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Average operating speed υa • • • • • • • • • • Mounting direction • • • • • • • • • • • • • • • • • • • • • • • Cushion • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Mounting Direction MY3A25-500 300 mm/s Horizontal mounting Rubber bumper (δ = 4/100) 1. Horizontal z mounting 2. Wall mounting y Page 26 x y 3. Ceiling mounting z x W: Work piece (0.8 kg) 4. Vertical mounting x Page 2 z y x y z MY3A25-500...

Series MY3 Calculation of Guide Load Factor 4 Calculation of Load Factor for Dynamic Moment Equivalent load FE at impact 4 FE = 1.4υa x δ x m x g = 1.4 x 300 x —— x 0.8 x 9.8 = 131.7 (N) 100 M1E: Moment FE M1E Z M1E max (from r of graph MY3A ⁄ M1 where 1.4υa = 420 mm/s) = 2.85 (N Ⴇ m) • • • • • • • • • • • • • • 1 1 M1E = —— x FE x Z = —— x 131.7 x 20 x 10-3 = 0.88 (N Ⴇ m) 3 3 Load factor 4 = M1E ⁄ M1E max = 0.88 ⁄ 2.85 = 0.31 M1 M3 M3E: Moment Y M3E max (from t of graph MY3A ⁄ M3 where 1.4υa = 420 mm/s) = 0.95 (N Ⴇ m) • • • • • • • • • • • • • • • • • • • • 1 1 M3E = —— x FE x Y = —— x 131.7...

Model Selection Series MY3 Mounting of Fitting and Speed Controller When the stroke adjustment unit is used with MY3B and MY3M, the fittings mountable on the front or back port will be limited to those listed below. In such cases, since direct mount type speed controllers cannot be mounted, use in-line type speed controllers. (Except MY3B40/50/63 and MY3M63) Refer to Best Pneumatics No. 6 for the details of fittings and speed controllers. Mounting (Mounting a male connector) Direct Mount Type Speed Controller Stroke adjustment unit Elbow/Universal type In-line type AS1F AS01F Back side Head cover...