Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20 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 65 to 85 mm on the machine — no shims, no part change.
- BoreØ40 mm
- Max stroke85 mm
- Adjustable range65–85 mm
- Adjuster threadM12×1.25
- Port sizePT1/8
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20
The AirTAC SDAJ40X85-20 is a compact double-acting double-rod cylinder featuring an external extend stop. An M12x1.25 adjustment screw lets you dial the forward end-position anywhere between 65 and 85 mm directly on your equipment, eliminating the need for shims or part swaps during changeovers. Retract remains at the full 85 mm.
The short riveted body saves valuable axial mounting depth where larger profile cylinders cannot fit. End shock is managed by a fixed NBR bumper, which decelerates the stroke but is not an adjustable air cushion.
Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20 Technical Specifications
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 85 mm |
| Adjustable range | 65 – 85 mm |
| Adjuster thread (R) | M12×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M8×1.25 F / M14×1.5 male (B) |
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
The adjustment screw shortens the extend stroke by up to 20 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 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 SDAJ40X85-20
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×85 | Maximum stroke length in mm. |
| -20 | Adjustable window (10/20/30/40/50/75/100 mm). |
| S / B | S = 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 SDAJ40X85-20 Is Used
Carton Forming
Adjust the mechanical stop on the fly to fold different box depths, relying on the fixed NBR bumper to absorb the impact of rapid 30-500 mm/s cycling.
Is the Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-20 the Right Cylinder?
Choose this specific unit if your fixture requires on-site stroke tuning across a 20 mm window.
Confirm the 40 mm bore, 85 mm max stroke, 20 mm adjust window, and PT1/8 port. This SKU lacks the S magnet code, so it cannot accept reed or electronic switches; add the S variant if sensing is required. Note that the rod end is female M8x1.25. For load holding without live pressure, the fixed bumper will not lock the piston; you must integrate an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 65–85 mm
- ✓ Force at your working pressure
- ✓ Access to reach the R adjuster
- ✓ Magnet (S) for sensors?
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 SDAJ40X85-20 FAQ
Turning the R M12x1.25 screw shortens the extend end-position by up to 20 mm, giving a usable forward range of 65 to 85 mm. The screw acts purely as a mechanical stop and does not alter the output force or lock the piston mid-stroke.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC SDAJ Cylinders
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