Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-10S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-10S 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 SAIJ50AX275-10S
The AirTAC SAIJ50X275-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end-of-travel position. With a 275 mm nominal stroke and a 10 mm adjustment range, it provides a usable travel window of 265-275 mm to dial in exact stopping points during machine commissioning. This 50 mm bore generates 982 N of push thrust at 0.5 MPa, making it well-suited for moderate-force handling tasks.
This variant includes a SUS420J2 stainless steel rod for improved corrosion resistance and utilizes PT tapered port threads. Because the stroke is 275 mm, an external guide is recommended to prevent excessive side-loading on the rod. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-10S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-10S |
|---|---|
| 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 SAIJ50AX275-10S
| 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 SAIJ50AX275-10S Is Used
Machine Changeover
Quickly dial in the 265-275 mm travel window during product size transitions on a packaging line without replacing the cylinder or adding external shims.
Variable End-Stop Diverting
Fine-tune the retract position on a conveyor diverting mechanism to handle different carton lengths accurately at the commissioning stage.
Press Fit Tuning
Adjust the precise bottoming position for a light-duty press operation, ensuring perfect contact force without machining custom spacers.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-10S the Right Cylinder?
Select this 50 mm bore when your application requires 982 N of push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628 N, or down from a 63 mm bore offering 1559 N. The adjustable stroke is chosen over a fixed-stroke SAI cylinder when you need variable end-stops for product changeovers or precise end-position tuning without swapping out the physical cylinder. To match this ISO 15552 replacement exactly, verify the 50 mm bore, 275 mm stroke, 10 mm adjustment, PT port threads, and the -S magnet option for position sensing.
Because the nominal stroke is 275 mm, you must account for side-load risks on the extended rod; always incorporate an external guide rail to support the load. Remember that the rear adjuster is a travel stop, not a lock. If your system requires true load-holding without continuous air pressure, you should use an SAIL air-released lock cylinder, a BSAI clamp-lock, or an external pilot-operated check valve.
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 SAIJ50AX275-10S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke by up to 10 mm. This creates a usable travel window of 265-275 mm, letting you fine-tune the end position at commissioning without changing the cylinder.
At a 0.5 MPa operating pressure, the SAIJ50X275-10-S provides 982 N of push thrust and 825 N of pull thrust. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf of push force.
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