Air Cylinders Model Selection Series MB Series CJ2 Series CM2 Series CG1 Series CA2 Series CS2 Series CS1 Series CQ2 2 Best Pneumatics Step q Determine the load factor in accordance with the purpose. 0.7 or less (70% or less) 1 or less (100% or less) Technical data for air cylinders 1 Step 2 Step Step 3 4 For detailed technical data other than the air cylinder model selection, refer to pages 1819 to 1827. Data 1: Bore Size Selection (page 1820) Data 2: Air Consumption and Required Air Volume (page 1824) Data 3: Theoretical Output Table (page 1825) Data 4: Condensation (page 1827) Take the impact at the stroke end into consideration. The aspects indicated below may need to be taken into consideration, depending on how the cylinder is operated. Obtain the cylinder’s air consumption and its required air volume. Obtain the bore of the cylinder tube. → Refer to Graph (1) and (2). 0.5 or less (50% or less) Note) Purpose of operation Static operation (Clamping, Low-speed vise crimping, etc.) Dynamic operation Horizontal movement of load on guide Vertical and horizontal movement of the load Load factor η Note) If it is particularly necessary to operate at high speeds, the load rate must be reduced further. (In the graph, it is possible to select a load rate of 0.4, 0.3, 0.2, or less.) w Determine the operating pressure. Generally, set the regulator to 85% of the source air pressure. (In the graph, a selection between 0.2 MPa and 0.8 MPa is possible.) e Determine the direction in which the cylinder force will be used. Extending side → Refer to Graph (1). Retracting side → Refer to Graph (2). Note) If the same load is applied both for pushing and pulling in a horizontal operation, set the direction to the retracting side. q When an external stopper (shock absorber, etc.) is provided to absorb the impact, select a stopper with sufficient absorption capacity. w Stopping the piston with the cylinder without a stopper: Verify in Graphs (3) to (10) the absorption capacity of the cushion that is enclosed in the cylinder. 1) Rubber bumper ・・・・・・ Urethane rubber is used for preventing metalto- metal contact between the pison and the cover. 2) Air cushion ・・・・・・・・・・・・ The air in the exhaust side is compressed slightly before the stroke end, and its reaction force absorbs the kinetic energy of the load, thus enabling the piston to stop quietly. q If a lateral load is applied to the piston rod: Verify in Graphs (11) to (19) whether the lateral load is within an allowable range. w When using a cylinder with a relatively long stroke, if a buckling force acts on the piston rod or the cylinder tube, verify in the table whether the stroke or the operating pressure is within a safe range. Obtain the air consumption selecting a compressor and for calculating the running cost and the required (Graphs (21), (22)) that is necessary for selecting a compressor and for calculating the running cost and the required air volume (Graph (23)) that is necessary for selecting equipment such as an air filter or a regulator, or the size of the piping upstream. Front matter 27