LD

Material

Actuator Only
Pneumatic Actuator
Pneumatic Actuator Pneumatic Actuator
Pneumatic Actuator
Pneumatic Actuator

Pneumatic Actuator

  • Available in Double Acting and Single(Spring) Acting configurations to support automation and fail-safe system applications.
  • Normal Operating Pressure: 2.8–8.4 kgf/cm², designed for standard industrial air supply systems.
  • Maximum Allowable Pressure: 10.5 kgf/cm², providing additional structural safety margin beyond normal operating conditions.
  • Compatible with dry or lubricated non-corrosive gases, offering flexibility in air supply requirements.
  • Operating Temperature Range: -40°F to +200°F, suitable for outdoor and harsh environmental installations.

    • Please contact us for Flow Rate, CV Value, Working Pressure/Temperature, Pressure Loss, and other technical information.

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Actuator Design & Reliability Features

Operation

Double-Acting (Top View A)
Double-Acting actuator, top view A
For clockwise output, apply pressure to P2, which forces the pistons to move together. The volume between the pistons is exhausted at P1.
Double-Acting (Top View B)
Double-Acting actuator, top view B
For counterclockwise output, apply pressure to P1, which forces the pistons apart. The linear travel of the pistons is converted to a rotation of the drive shaft by the rack to pinion connection. The volume outside each piston is exhausted at P2.
Single(Spring)-Acting (Top View A)
Spring-Acting actuator, top view A
For clockwise output, the volume between the pistons is exhausted at P1, causing the springs to force the pistons together. The volume outside the pistons is vented at P2.
Single(Spring)-Acting (Top View B)
Spring-Acting actuator, top view B
For counterclockwise output, apply pressure to P1, which forces the pistons apart and compress the springs. The linear travel of the pistons is converted to a rotation of the drive shaft by the rack to pinion connection. The volume outside each piston is exhausted at P2.




Single-Acting Spring Return Actuator

Model Spring Set Spring Torque Output (kgf·cm) Air Torque Output at Operating Pressure (kgf·cm)
Start End 40 60 80 100 120
Start End Start End Start End Start End Start End
LD-250 2 79.5 51.8 86.4 54.1 159.0 125.6 231.6 198.1 303.1 269.6 375.6 359.4
3 119.8 77.2 - - 130.2 80.6 202.8 153.2 263.8 224.6 346.8 297.2
4 161.3 103.7 - - 101.4 35.7 173.8 107.1 245.4 179.7 318.0 251.1
5 201.6 129.0 - - - - 145.2 62.2 217.7 133.6 289.2 206.2
6 240.8 155.5 - - - - - - 188.9 88.7 261.5 160.1
LD-450 2 145.2 93.3 155.5 95.6 285.7 225.8 415.9 356.0 544.9 485.0 675.1 614.0
3 218.9 139.4 - - 233.9 144.0 364.0 274.2 493.1 403.2 623.2 533.4
4 292.6 186.6 - - 182.0 62.2 312.2 192.4 441.2 321.4 571.4 451.6
5 365.2 232.7 - - - - 260.4 110.6 390.5 240.8 519.6 369.8
6 438.9 279.9 - - - - - - 337.5 157.8 467.7 289.2
LD-1000 2 321.4 206.2 345.6 212.0 632.4 498.8 919.3 785.7 1207.3 1072.5 1494.1 1360.5
3 481.5 311.0 - - 517.2 320.3 804.1 606.0 1090.9 892.8 1377.8 1180.8
4 644.0 414.7 - - 403.2 138.2 690.0 427.4 976.9 711.9 1263.7 998.8
5 804.1 518.4 - - - - 576.0 244.2 862.8 534.5 1149.7 817.9
6 966.5 622.1 - - - - - - 748.8 350.2 1035.6 641.7
LD-2250 2 759.2 453.9 794.9 455.0 1442.3 1103.6 2092.0 1751.2 2745.4 2400.8 3384.1 3049.3
3 1140.5 679.7 - - 1191.2 680.8 1838.6 1329.4 2487.2 1977.0 3136.3 2626.6
4 1520.6 906.6 - - 940.0 260.4 1588.6 907.8 2337.4 1555.2 2885.8 2204.9
5 1900.8 1132.4 - - - - 1337.5 488.4 1986.0 1132.4 2635.8 1783.0
6 2281.0 1360.5 - - - - - - 1735.0 715.4 2382.5 1360.5
LD-3650 2 1213.1 699.3 1327.1 759.2 2376.6 1808.6 3427.2 2859.3 4476.7 3908.7 5526.1 4959.4
3 1812.1 1050.6 - - 1988.4 1147.4 3037.8 2196.9 4088.4 3247.5 5137.9 4297.0
4 2408.8 1402.0 - - 1599.0 487.3 2649.6 1537.9 3699.1 2587.4 4749.7 3636.9
5 3024.0 1749.9 - - - - 2266.0 857.1 3315.5 1906.6 4364.9 2956.0
6 3621.9 2101.2 - - - - - - 2926.1 1246.5 3976.7 2297.1
LD-5000 2 1797.1 904.3 1832.0 925.1 3201.6 2293.0 4573.4 3663.4 5944.3 5043.8 7315.2 6416.6
3 2695.7 1359.4 - - 2741.8 1382.4 4112.6 2764.8 5483.5 4134.7 6865.9 5506.6
4 3605.8 1809.6 - - 2281.0 476.9 3663.4 1843.2 5030.2 3225.6 6405.1 4596.5
5 4506.7 2257.9 - - - - 3201.6 939.8 4573.4 2315.5 5944.3 3686.4
6 5402.9 2718.7 - - - - - - 4112.6 1405.4 5483.5 2776.3
LD-11000 2 3916.8 1981.4 3985.9 2027.5 6976.3 5026.6 9970.3 8013.9 13017.6 11007.6 16012.8 14054.4
3 5875.2 2960.6 - - 5980.8 3052.8 8977.9 6036.5 11980.8 9035.0 14977.6 11980.8
4 7820.0 3950.9 - - 4988.2 1073.7 7982.6 4066.6 10986.2 7064.2 13986.2 10057.0
5 9778.1 4941.9 - - - - 6988.3 2083.7 9970.3 5079.7 13017.6 8179.4
6 11750.4 5937.6 - - - - - - 8977.9 3108.0 11980.8 6105.6




Pneumatic Rack & Pinion Actuators TORQUE RATINGS
Double Acting Actuators

Model Air Torque Output at Operating Pressure (kgf-cm)
40 60 80 100 120
LD-125 81.8 123.3 161.3 208.5 246.5
LD-250 142.9 218.9 288.0 367.5 436.6
LD-450 284.6 433.2 576.0 729.3 866.4
LD-1000 576.0 864.1 1152.1 1440.1 1728.1
LD-2250 1296.1 1943.6 2592.2 3239.7 3888.3
LD-3650 2102.6 3154.4 4205.2 5257.0 6307.7
LD-5000 2880.2 4320.4 5760.5 7200.6 8640.8
LD-11000 6336.5 9504.8 12673.1 15841.4 19009.6




Pneumatic Rack & Pinion Actuators TORQUE RATINGS
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