8-p1242-1258-yuatucylinder

Hydraulic Cylinders Technical Data 1 Bore Size Selection Series and bore sizes Relationship among generated force, bore size and pressure Fp1 : Generated extension force of cylinder (N) Fp2 : Generated retraction force of cylinder (N) Ff1 : Theoretical extension output (N) Ff2 : Theoretical retraction output (N) P : Operating pressure (MPa) D : Bore size (mm) d : Piston rod diameter (mm) μ1 : Cylinder extension load pressure coefficient μ2 : Cylinder retraction load pressure coefficient Fp1=μ1 x Ff1 Fp2=μ2 x Ff2 Ff1= D2 x P Ff2= (D2-d2) x P Formula (1) Formula (2) Formula (3) Formula (4) π4 π4 Selection standards Load type Low-speed operation (100 mm/sec or less) High-speed operation Load factor 60 to 80% 25 to 35% Series Nominal pressure Bore size (mm) (MPa) 3.5 10 16 3.5 7 10 16 3.5 7 14 14 3.5 20      32           40             50           63           80           100           125  160  25     CHQ CHKD CHKG CHM CHN CHSD CHSG CH2E CH2F CH2G CH2H CHA OUT IN Series CHQ Theoretical Output Bore size (mm) Piston area (mm2) Rod size (mm) 20 32 40 50 63 80 100 10 16 16 20 20 25 30 OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN 314 235 804 603 1256 1055 1963 1649 3117 2803 5026 4535 7853 7147 1 314 235 804 603 1256 1055 1963 1649 3117 2803 5026 4535 7853 7147 471 352 1206 904 1884 1582 2944 2473 4675 4204 7539 6802 11779 10720 628 470 1608 1206 2512 2110 3926 3298 6234 5606 10052 9070 15706 14294 785 587 2010 1507 3140 2637 4907 4122 7792 7007 12565 11337 19632 17867 942 705 2412 1809 3768 3165 5889 4947 9351 8409 15078 13605 23559 21441 1099 822 2814 2110 4396 3692 6870 5771 10909 9810 17591 15872 27485 25014 1.5 2 2.5 3 3.5 Operating direction Operating pressure (MPa) Unit: N When a cylinder is nearly at rest, the relationship among generated force, bore size and pressure can be expressed with the following formulas. A cylinder's generated force will be lower than the theoretical output due to the following factors. (1) Sliding resistance on the cylinder bearings and seals, etc. (2) Pressure loss in hydraulic equipment and piping (3) Frictional resistance in moving parts of machinery It is necessary to select bore sizes considering these factors. The ratio of the load to the theoretical output is the load factor. Select bore sizes using the values below as reference for the load factor. Theoretical output (N) = Pressure (MPa) x Piston area (mm2) 1242