Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 240mm 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
- Stroke240 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 SAIJ50AX240-100S
The AirTAC SAIJ50X240-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 240 mm travel back by up to 100 mm. This creates a wide 140-240 mm usable window, giving you exact end-position tuning at commissioning without swapping the cylinder or bolting on external stops. It delivers a 0.5 MPa push force of 982 N and a pull force of 825 N.
This specific SKU is configured with a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and because this model includes a magnet (-S), it supports direct mounting of AirTAC CMSE reed and DMSE electronic solid-state switches for precise position feedback.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 240 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 SAIJ50AX240-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×240 | 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 SAIJ50AX240-100S Is Used
Machine Setup Changeover
Dial in the exact 140-240 mm end-position during product changeovers without replacing the entire cylinder or adding external mechanical stops.
Variable End Stops
Adjust the retract stroke on the fly for packaging lines that handle varying package sizes, ensuring precise positioning every time.
Sensor-Ready Positioning
Leverage the built-in magnet and dual sensor grooves with CMSE or DMSE switches to confirm the adjusted end-stop position.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-100S the Right Cylinder?
Choose this 50 mm bore adjustable cylinder when your setup requires a variable end-stop or frequent product-size changeovers on a line, rather than a fixed-stroke SAI. If you need less force, stepping down to a 40 mm bore yields 628 N of push force at 0.5 MPa. If your application requires more thrust, stepping up to a 63 mm bore provides 1559 N. Remember that the rear adjuster acts only as a travel stop to set deceleration; it does not hold the load without live air. For true load-holding without continuous pressure, consider a SAIL air-released lock, a BSAI clamp-lock, or an external pilot-operated check valve.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 50 mm bore, 240 mm stroke, 100 mm adjustment range, PT G1/4 port, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles. Since the 240 mm stroke is under the 300 mm side-load threshold, you can rely on the 16 mm rod and M12x1.25 thread for standard loads without an external guide.
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 SAIJ50AX240-100S FAQ
The rear adjuster screw lets you shorten the effective travel by up to 100 mm from the nominal 240 mm stroke. This provides a usable 140-240 mm window, allowing you to fine-tune the retract end-position at commissioning without swapping cylinders.
At 0.5 MPa, it provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N. The rear adjuster is only a travel stop and does not lock or hold these forces without live air pressure.
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