Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-50S 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 SAIJ50AX275-50S
The AirTAC SAIJ50X275-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 225-275 mm usable travel window, allowing you to dial back the 275 mm nominal stroke by up to 50 mm during machine commissioning. The 50 mm bore yields 982 N of push force at 0.5 MPa, fitting neatly between the 628 N of a 40 mm bore and the 1559 N of a 63 mm bore.
This SKU ships with a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and includes a magnet for CMSE / DMSE sensors. The CMSE operates as a reed switch, while the DMSE provides solid-state electronic detection. The extruded aluminum barrel includes sensor grooves on both sides, and the rear adjuster functions strictly as a travel stop, not a load-holding lock.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-50S |
|---|---|
| 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 SAIJ50AX275-50S
| 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 SAIJ50AX275-50S Is Used
Product Changeover
Dial in the 225-275 mm travel window on the fly to accommodate varying package lengths without changing out the cylinder hardware.
Machine Setup
Fine-tune the retract end position during initial commissioning to perfect end-of-stroke timing without adding external mechanical stops.
Variable End Stops
Adjust the stopping distance dynamically for diverter gates or positioning stops handling different product sizes on a single line.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-50S the Right Cylinder?
Choose this 50 mm bore when your application requires roughly 982 N of push force at 0.5 MPa, stepping up from the 628 N capacity of the 40 mm version. The 50 mm adjustment range is ideal for production lines running multiple product sizes, as the external stopper allows rapid end-position tuning without swapping cylinders or adding external stops. Because the 275 mm stroke exceeds 300 mm when fully extended, ensure you use an external guide to prevent excessive side loading on the 20 mm rod and M16x1.5 thread.
For position holding without live air pressure, note that the rear adjuster and air cushions only decelerate the travel end; you must use a SAIL pneumatic lock, a BSAI clamp-lock, or an external pilot-operated check valve. To match this ISO 15552 cylinder, specify the 50 mm bore, 275 mm stroke, 50 mm adjustment, PT tapered port, your preferred mounting from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2), and the -S magnet option.
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 SAIJ50AX275-50S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. It can deliver up to 1767 N of push force at 0.9 MPa.
The rear adjuster acts as a travel stop, allowing you to trim the 275 mm nominal stroke back by up to 50 mm, creating a usable travel window of 225-275 mm. It does not lock the load; it only sets the end position.
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Covers non-human-caused product damage.
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