Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-10
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-10
The AirTAC SAIJ50X300-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push force and 825N of pull force at 0.5 MPa, utilizing a G1/4 port and a 20mm piston rod. The built-in adjusting screw allows you to fine-tune the effective travel within a 290-300mm window, providing precise end-position calibration without adding external stops.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is configured without a magnet. The rear adjuster acts strictly as a travel stop to set deceleration limits and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-10 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 300 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 SAIJ50AX300-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×300 | 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 SAIJ50AX300-10 Is Used
End-Stop Calibration
Dial in the exact 290-300mm travel distance during machine commissioning to perfect the final positioning of moving parts.
Product Changeover
Quickly trim the stroke by up to 10mm on the fly to accommodate slightly different product sizes without swapping the cylinder.
Material Handling
Provides 982N of push force at 0.5 MPa for diverting or positioning items on a line, with adjustable end-stops for varying package lengths.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-10 the Right Cylinder?
Choose this 50mm bore when an application requires roughly 982N of thrust at 0.5 MPa, stepping up from a 40mm bore (628N) if extra force margin is needed, or down from a 63mm bore (1559N) to save space. An adjustable-stroke cylinder is selected over a fixed SAI model when commissioning requires dialing in the exact end-stop by up to 10mm, which is ideal for product changeovers. Because the stroke is 300mm, the 20mm rod should be paired with an external guide to prevent excessive side-loading on the piston.
For a true ISO 15552 replacement match, verify the 50mm bore, 300mm stroke, 10mm adjustment range, PT port threads, and the lack of a magnet. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. If the machine requires the load to be held without continuous air pressure, use a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a locking mechanism.
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 SAIJ50AX300-10 FAQ
The rear adjusting screw acts as a mechanical stopper that shortens the retract stroke. For the SAIJ50X300-10, you can trim the effective travel back by up to 10mm, creating a usable stroke window of 290-300mm to fine-tune the end position without external stops.
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. It can reach up to 1767N of push force at 0.9 MPa.
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