Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 270mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke270 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- 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 SAIJ50 Adjustable Cylinder SAIJ50AX270-50S
The AirTAC SAIJ50X270-50-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 220-270 mm, letting you dial back the 270 mm nominal stroke by up to 50 mm during commissioning. Delivering 982 N of push thrust at 0.5 MPa, it handles mid-range actuation tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This SKU is equipped with a SUS420J2 stainless steel rod (option A) for superior corrosion resistance and ships with a -S magnet for position sensing. It supports AirTAC CMSE reed and DMSE electronic solid-state switches. The PT tapered port threads ensure a tight, reliable pneumatic connection at the G1/8 port.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×270 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S Is Used
Machine Setup Calibration
Fine-tune the 220-270 mm travel window during initial commissioning to perfectly align end-of-stroke positions without machining external stopper blocks.
Product Size Changeover
Rapidly adapt the cylinder's effective stroke on packaging lines when product dimensions change, using the 50 mm rear adjustment screw to set new end stops.
Variable End-Stop Positioning
Achieve precise end-position tuning on automated assembly equipment, leveraging the SUS420J2 stainless rod and CMSE/DMSE sensors for repeatable feedback.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S the Right Cylinder?
Choose this 50 mm bore when your application requires 982 N of push force at 0.5 MPa. If your load demands less power, stepping down to a 40 mm bore yields 628 N; for heavier payloads, a 63 mm bore provides 1559 N. The 50 mm adjustment range is ideal for product-size changeovers on a line, allowing variable end-stops without swapping the cylinder or adding external stops. Because the 270 mm stroke exceeds 300 mm? No, it is 270 mm, but long unsupported strokes still need an external guide to manage side load. The 16 mm rod and M12x1.25 thread handle moderate side loads well.
For load-holding without live air, note that the rear adjuster acts only as a travel stop, not a lock. The air cushions at both ends manage deceleration but will not hold the load. For secure positioning, consider the SAIL (air-released lock) or BSAI (clamp-lock) series. This cylinder is dimensionally interchangeable per ISO 15552 and uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX270-50S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push thrust and 825 N of pull thrust. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf.
The rear adjuster screw lets you shorten the 270 mm nominal stroke by up to 50 mm, creating a 220-270 mm usable travel window. It acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
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