SY Series Ledeen Pneumatic/Hydraulic Actuator

Brand: Cameron

SY series LEDEEN* actuators provide increased flexibility through consistent engineering design and efficient modularity. 

Double-acting, spring fail-close or -open, and manual override options are available on the pneumatic and hydraulic products.
Features
  • Availability as double-acting or spring-return configurations
  • Torque outputs to 5,700,000 lbf.in (644,000 Nm)
  • Open and close travel stops that provide ±3° minimum
  • Scotch yoke mechanism generates powerful opening and closing torque outputs
  • Steel-fabricated frame that provides rugged foundation of modular assemblies
  • Chrome-plated side-load bar with guide block for effective elimination of piston rod deflection
  • Bronze bushing interfaces that provide low-friction support of sliding and rotating components
  • Aluminum bronze sliding blocks for a low-friction, low-stress pin connection
  • Steel cylinder assembly that provides robust pressure containment for all conditions
  • Plated cylinder ID to ensure sealing surface with excellent corrosion resistance
  • Nitrile rubber piston seal configurations designed specifically for pneumatic and hydraulic applications
  • Composite guide band on piston to provide low-friction guidance and support
  • Steel spring cartridge fully enclosed from environmental conditions
  • Seal-welded design construction that provides improved personnel safety
  • Epoxy-coated prestressed springs that provide consistent performance with corrosion protection

Specifications

Brand

Actuator Type

  • Spring Return

Approvals & Certifications

  • IEC 61508: 2000
  • ISO 9001: 2000
  • PED 97/23/CE
  • SIL 3 - Integrity
  • Lloyd's Register LRQA
  • SI 825
  • TRCU
  • TÜV (Technischer Uberwachungsverein)

Bushing Material

  • Bronze

Flange Material

  • Carbon Steel

Materials of Construction

  • Alloy Steel - Travel Stop, Pin, Tie Rod, Scotch Yoke, Guide bar
  • Aluminum Bronze - Sliding Block
  • Carbon Steel - Guide Block, Cylinder, Frame
  • Graphite - Guide Band
  • Teflon - Guide Band

Override

  • Manual Override

Piston Material

  • Alloy Steel
  • Carbon Steel

Pressure Range

  • psig: 145 to 3,000 (kPa: 1,000 to 20,200, bar: 10 to 202) - Hydraulic
  • psig: 40 to 175 (kPa: 300 to 1,200, bar: 3 to 12) - Pneumatic

Seal Material

  • Buna O-Ring
  • Buna Quad-Ring
  • Fluorosilicone Low-Temperature Applications to -60° C (-76° F)
  • Viton High-Temperature Applications to 200° C (392° F)

Spring Material

  • Alloy Steel
  • Carbon Steel - Spring Cartridge

Temperature Range

  • -29° to 80° C (-20° to 176° F) - Pneumatic, Hydraulic

Torque Output

  • 3,600,000 in/lbs (400,000 Nm)

Yoke Design

  • Canted
  • Symmetrical

  • ON/OFF Control or Modulating Control of Any Quarter-Turn Operated Valve

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