Parker Pneumatic
4MA NFPA Aluminum Air Cylinder

Construction
  • Anodized aluminum construction
  • Extruded Body or Tie-rod
  • 20 standard mounting styles
  • NFPA interchangeable
  • Machined Endcaps

Key Features

  • Low friction 
  • Magnetic piston ring standard
  • Non-lube (no airline lubricator required)

Rod Glands

  • HI LOAD gland assembly option for side load
  • Metallic rod wiper gland assembly for rod adherents
  • Externally removable bronze alloy rod gland

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Bore/Stroke

  • Extruded Body Bore Sizes: 1-1/2", 2", 2-1/2", 3-1/4", 4", 5"
  • Tie-rod Construction Bore Sizes: 1-1/2", 2", 2-1/2", 3-1/4", 4", 5", 6", 8"
  • Strokes: Available in any practical stroke length

Sensors

  • Accepts solid-state (PNP, NPN), Reed Sensors
  • NAMUR (intrinsically-safe), ATEX and Weld Immune sensors available
  • End-of stroke proximity sensors available
  • Most sensors CE approved and UL listed 
  • Continuous position sensing (LPSO option)

Sensor Installation

  • Extruded body has integrated sensor grooves:
    • (3) Global sensor
    • (2) Mini-Global sensor
    • (1) 2MA style sensor lobe (location can be configured in model number)
  • Tie-rod utilizes universal bracket for Global sensors

Rods

  • Rod diameters 0.625", 1.000", 1.375", 1.750"
  • 4 standard rod end styles, specials available
  • Case-hardened, hard chrome plated carbon steel rod standard
  • Single rod end or double rod ends
  • Oversized rods available
  • Stainless steel rods (303, 316, 17-4)

Seal Options

  • High temperature version to +250F (+121C) with fluorocarbon seals
  • Low temperature version to -50F (-46C) with low temperature seals
  • Fluorocarbon rod seals only available (for chemical resistance)

Cushions/Bumpers

  • Bumpers and bumper piston seals
  • Adjustable cushions optional at either end or both ends
  • Stop Tube with cushions available
  • NuCushion bumpers available
  • Shock Absorber on cap end available

Ports

  • NPTF ports standard
  • SAE, BSPP, BSPT ports available
  • Multiple ports available
  • Oversized or Undersized ports available

Severe Service Options

  • Stainless steel fasteners / tie-rods 
  • Special coatings
  • Rod boots

Options

  • Rod lock version (4MAJ)
  • Guided version (HB family)
  • Air cylinder/valve combination (ACVB option)
  • Hydro-Check for smooth hydraulic control

  • 250 PSIG (17 Bar) maximum air service
  • Hydraulic service to 400 PSIG (27 Bar) as 4ML
  • -10F to +165F (-23C to +74C) standard operating temperature range
Materials

  • Zinc plated fasteners