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AirTAC SDAJ Series · Adjustable-Stroke Compact Cylinder

Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S

The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S is a genuine double-acting COMPACT cylinder (Ø40mm bore) whose extend end-position is set by an external M12×1.25 adjustment screw. You can dial the stroke anywhere from 35 to 75 mm on the machine — no shims, no part change.

  • BoreØ40 mm
  • Max stroke75 mm
  • Adjustable range35–75 mm
  • Adjuster threadM12×1.25
  • Port sizePT1/8
  • CushionFixed NBR bumper (both ends)
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About the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S

The AirTAC SDAJ40X75-40S is a compact double-acting double-rod cylinder featuring an external extend stop. A front M12x1.25 adjustment screw lets you dial the outward travel down from its 75 mm maximum to as little as 35 mm directly at the fixture, eliminating the need for shims or part swaps during changeovers. Retract travel remains full length.

The short riveted body saves valuable axial mounting depth in tight machinery. End-of-stroke deceleration is handled by a fixed NBR bumper, and the built-in magnet (-S) supports AirTAC reed or electronic solid-state switches.

Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S Technical Specifications

ModelAirtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S
SeriesSDAJ compact adjustable-stroke cylinder
Bore sizeØ40 mm
Max stroke75 mm
Adjustable range35 – 75 mm
Adjuster thread (R)M12×1.25
Port sizePT1/8
Acting typeDouble acting
Rod end threadM8×1.25 F / M14×1.5 male (B)
Operating pressure0.15 – 1.0 MPa
Proof pressure1.5 MPa
Temperature-20 to +70 °C
Speed range30 – 500 mm/s
CushionFixed NBR bumper (both ends)

The adjustment screw shortens the extend stroke by up to 40 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.

Theoretical Output Force (Ø40mm)

PressurePush forcePull force
0.5 MPa528 N528 N
0.7 MPa739 N—
Max (@1.0 MPa)108 kgf

SDAJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod SDA push of the same bore. Actual usable force is lower than theoretical due to friction.

Model Code: Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S

SDAJCompact double-acting cylinder with adjustable stroke.
40Bore size in mm.
×75Maximum stroke length in mm.
-40Adjustable window (10/20/30/40/50/75/100 mm).
S / BS = magnet; B = male-thread rod (both optional).

Thread: PT standard. Related SDA-family variants: SDA (fixed stroke), SDAD (double rod), SSA/STA (single acting), SDAT (duplex), SDAW (duplex-end).

Where the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S Is Used

packaging

Carton Forming Setup

Fine-tune the 40 mm adjustment window on the packaging line to adapt flap folding depth, ensuring precise positioning across varied box sizes.

Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S the Right Cylinder?

Choose this 40 mm unit when you need on-site stroke tuning between 35 and 75 mm.

Confirm the PT1/8 port, the 16 mm rod with female M8x1.25 end thread, and the 40 mm adjustment window. Note that a plain cylinder does not hold a load if air pressure drops or the valve centers—the fixed bumper only decelerates the stroke end and the adjuster is a mechanical stop, not a lock. For load holding without live pressure, install an external rod lock or pilot-operated check valve.

Quick checklist

  • ✓ Need on-machine stroke fine-tuning?
  • ✓ Target position within 35–75 mm
  • ✓ Force at your working pressure
  • ✓ Access to reach the R adjuster
  • ✓ Magnet (S) for sensors?
Ask an Engineer

Installation & Maintenance Notes

  • check Use clean air filtered to 40µm or finer.
  • check Keep within 0.15 – 1.0 MPa operating pressure.
  • check Lock the M12×1.25 adjuster after setting the stroke.
  • check Avoid side load on the piston rod.
  • check Front/rear covers are riveted — do not dismantle.
  • check Installation by qualified personnel per AirTAC docs.

Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S FAQ

The theoretical maximum push is 128 kgf at 1.0 MPa.

The M12x1.25 R screw shortens the extend stroke from 75 mm down to 35 mm without changing the force. The built-in -S magnet works with AirTAC reed or electronic solid-state switches for position sensing.

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Related AirTAC SDAJ Cylinders

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