Catalogs >
SMC Corporation of America >
Rodless cylinder

Rodless cylinder
52Pages

Catalog excerpts

MY3A3B.qxd 06.2.17 9:13 AM Page 1 CAT.ES20-165 B Mechanically Jointed Rodless Cylinders Basic short type (Rubber bumper) Series MY3A Basic standard type (Air cushion) Series MY3B Slide bearing type (Air cushion) Series MY3M Series Variations Series Type MY3A Basic short type MY3B Basic standard type Piping type MY3M Slide bearing type Bore size (mm) 16 25 40 63 Rubber bumper Air cushion Stroke adjusting unit Side support Floating bracket Made to Order Long stroke (-XB11) Centralized piping Helical insert threads (-X168) Standard piping Holder mounting bracket Note) (-X416, X417) Copper-free (20-) Note) Except the MY3A

Open the catalog to page 1

High functionality with reduced height and length Mechanically Jointed Rodless Cylinders Basic short type (Rubber bumper) Basic standard type -oading Capacity Slide bearing type Work pieces can be loaded directly on the work table Overall length (Z) reduced by 140 mm at the maximum Height (H) reduced by 36% at the maximum MY3A (with rubber bumper) Overall length (Z + Stroke) Weight reduced by 53% at the maximum

Open the catalog to page 2

MY3A3B.qxd 06.2.17 9:13 AM Page 3 Floating Bracket Easy connection with external guide. Vertical and lateral mounting is possible. (Page 16) Stroke Adjusting Unit (MY3A/3B) (MY3B/3M) Side Support The cylinder tube can be fixed from the upper or lower side. (Page 15, 27) Auto Switch Centralized Piping Can be mounted on both sides from the front direction. Integrated piping in the head cover is possible. (Refer to the back of page 6.) Positioning cushion mechanism The uniquely designed piston shape enables reduction of the height and length as well as practical arrangement of the common...

Open the catalog to page 3

The following are steps for selecting the MY3 series which is best suited to your application. Guideline for Tentative Model Selection © Most suitable O Suitable A Usable X Not recommended Note) The table accuracy means the amount of table deflection when a moment is applied. Selection Flow Chart When an external guide is used, the selection confirmation of the guide capacity should follow the selection procedure The MY3 series allow direct load application within the allowable range for the built-in guide. The payload in this case will vary depending on the driving speed and the mounting...

Open the catalog to page 4

Model Selection Series MY3 Stroke positioning Shock absorber Maximum operating speed Rubber bumper Direct loaded Stroke adjusting unit Shock absorber External stopper External shock Rubber bumper Stroke adjusting unit Shock absorber External stopper External shock Note 1) The shock absorber must meet the conditions mentioned on page 7. Note 2) As the external shock absorber, a unit with appropriate capacity and features should be installed close to the load center of gravity. Note 3) Use the stroke adjusting unit of the MY3B series with an external guide. Note 4) Shown below are the details...

Open the catalog to page 5

Types of Moment Applied to Rodless Cylinders Multiple moments may be generated depending on the mounting orientation, load and position of the center of gravity. Load Weight and Static Moment Note) ITU is a mass movable by thrust. Use 0.3 to 0.7 times the thrust (differs depending on the operating speed) as a guide for actual use. Dynamic Moment Note) Regardless of the mounting orientation, dynamic moment is calculated with the formulae above. Calculation of Guide Load Factor 1. Maximum load weight (1), static moment (2), and dynamic moment (3) (at the time of impact with stopper) must be...

Open the catalog to page 6

MY3A3B.qxd 06.2.17 9:13 AM Page 7 Series MY3 Model Selection 2 The following are steps for selecting the MY3 series which is best suited to your application. 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...

Open the catalog to page 7

Calculation of Guide Load Factor A] Calculation of Load Factor for Dynamic Moment- Equivalent load FE at impact MIE max (from © of graph MY3A/M1 where 1.4Da = 420 mm/s) = 2.85 (N«m) Load factor CM = MIE/MIE max = 0.88/2.85 = 0.31 M3E max (from © of graph MY3A/M3 where 1.4Da = 420 mm/s) = 0.95 (N«m) 5j Sum and Examination of Guide Load Factors- The above calculation is within the allowable value, and therefore the selected model can be used. Select a shock absorber separately. In an actual calculation, when the sum of guide load factors Ea in the formula above is more than 1, consider...

Open the catalog to page 8

MY3A3B.qxd 06.2.17 9:13 AM Page 10 Series MY3A/3B Model Selection The following are steps for selecting the MY3 series which is best suited to your application. 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...

Open the catalog to page 10