Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 275mm 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
- Stroke275 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 SAIJ50AX275-75S
The AirTAC SAIJ50X275-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to dial back the nominal 275 mm travel by up to 75 mm, creating a precise 200-275 mm usable window. It delivers 982 N of push force and 825 N of pull force at 0.5 MPa. This unit includes a magnetic piston for position detection and uses a SUS420J2 stainless steel rod for enhanced corrosion resistance.
Because the adjuster acts purely as a mechanical stop at the retract end, it cannot hold a load without continuous live air pressure; for fail-safe load holding, consider the SAIL or BSAI variants. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments, deliberately omitting FB, CA, CB, and CR options.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 275 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 SAIJ50AX275-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×275 | 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 SAIJ50AX275-75S Is Used
End-Position Tuning
Fine-tune the retract travel within the 200-275 mm window during commissioning to perfect product seating without adding external mechanical stops.
Machine Changeover
Quickly adapt the cylinder stroke for different product sizes on a conveyor line by turning the rear adjuster rather than replacing the entire actuator.
Variable Assembly Stops
Set precise retract distances for multi-stage assembly processes, leveraging the 982 N push force to securely seat varied components.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-75S the Right Cylinder?
Choose this 50 mm bore when an application requires around 982 N of thrust at 0.5 MPa, stepping up from a 40 mm bore (628 N) or down from a 63 mm bore (1559 N). An adjustable stroke is ideal for machine setups requiring variable end-stops or fine-tuning during commissioning without swapping out a fixed-stroke SAI cylinder. Since the stroke is 275 mm, an external guide is recommended to prevent excessive side-loading on the 20 mm rod.
To match this ISO 15552 replacement exactly, configure the 50 mm bore, 275 mm nominal stroke, 75 mm adjustment range, PT tapered port threads, SUS420J2 (A) rod material, and the -S magnet option compatible with CMSE reed and DMSE electronic sensors.
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 SAIJ50AX275-75S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder 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 screw acts as a mechanical stop, allowing you to shorten the effective stroke from the 275 mm nominal length down to 200 mm. It only sets the travel end and does not lock or hold the load without live air pressure.
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