Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30
The AirTAC SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30 is a genuine double-acting COMPACT cylinder (Ø20mm bore) whose extend end-position is set by an external M6×1.0 adjustment screw. You can dial the stroke anywhere from 45 to 75 mm on the machine — no shims, no part change.
- BoreØ20 mm
- Max stroke75 mm
- Adjustable range45–75 mm
- Adjuster threadM6×1.0
- Port sizeM5×0.8
- 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30
The AirTAC SDAJ20X75-30 is a compact double-acting double-rod cylinder featuring an external adjustable extend stop. By turning the M6x1.0 adjuster screw, you can dial the forward stroke down by up to 30 mm directly on the machine, yielding a usable extend range of 45 to 75 mm without changing parts.
The short riveted body saves valuable axial mounting depth where larger profile cylinders cannot fit. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Note this specific SKU lacks a piston magnet, so it cannot support reed or electronic switches; choose the -S variant if sensing is required.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30 Technical Specifications
| Model | Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Max stroke | 75 mm |
| Adjustable range | 45 – 75 mm |
| Adjuster thread (R) | M6×1.0 |
| Port size | M5×0.8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M4×0.7 F / M6×1.0 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 30 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 132 N | 132 N |
| 0.7 MPa | 185 N | — |
| Max (@1.0 MPa) | 27 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Maximum stroke length in mm. |
| -30 | 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30 Is Used
Package Diverter Setup
Fine-tune the pusher arm length on-site to handle varying carton widths, relying on the fixed NBR bumper to absorb end-of-stroke shock.
Is the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30 the Right Cylinder?
When sizing this 20 mm bore actuator, evaluate your force needs both ways.
This model is specified with a 75 mm maximum stroke, a 30 mm adjustment window, and an M5x0.8 port. It is ideal for setup-heavy lines needing on-site stroke tuning. Remember that a plain cylinder does not hold position on air loss or valve centering—the fixed bumper only decelerates near the end of travel. For secure load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 45–75 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 M6×1.0 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ20X75-30 FAQ
The theoretical maximum push force is 32 kgf at 1.0 MPa.
The M6x1.0 adjuster screw mechanically shortens the extend stop by up to 30 mm, giving a usable forward range of 45 to 75 mm. It sets the stop position and does not alter force. The cylinder cannot hold a load on air loss; use an external rod lock for that.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Related AirTAC SDAJ Cylinders
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