Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-10S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 280mm 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
- Stroke280 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 SAIJ50AX280-10S
The AirTAC SAIJ50X280-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that fine-tunes the end position without external stops. It provides a usable travel window of 270 to 280 mm, allowing you to dial in the exact retract distance during commissioning. Equipped with a SUS420J2 stainless steel rod and a magnet for CMSE or DMSE sensors, it generates 982N of push force and 825N of pull force at 0.5 MPa.
Because the stroke reaches 280 mm, the 20 mm diameter rod and M16x1.5 thread must be paired with an external guide to prevent excessive side-loading on the extruded aluminum barrel. The rear adjuster acts purely as a travel stop to set the end position and relies on the variable air cushion for deceleration. It does not function as a lock, so live air pressure is required to hold the load in place.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-10S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 280 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 SAIJ50AX280-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×280 | 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 SAIJ50AX280-10S Is Used
Product Changeover
Dial in the 270 to 280 mm retract distance on the fly to accommodate slight variations in incoming part lengths without swapping out the entire cylinder assembly.
Machine Setup
Use the 10 mm rear stopper screw to fine-tune the exact end position during initial commissioning, avoiding the need to bolt on secondary external stops.
Variable End Stops
Adjust the travel window on packaging lines to precisely position pushes or transfers, ensuring gentle handling of delicate goods at the end of the stroke.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-10S the Right Cylinder?
Choose this 50 mm bore when you need more thrust than the 40 mm bore (which yields 628N push at 0.5 MPa) but want a smaller footprint than the 63 mm option (which provides 1559N). The 10 mm adjustment range is ideal for precision machine setups where you need a variable end-stop to accommodate minor product size changes on a line, rather than committing to a fixed-stroke SAI cylinder.
As a dimensionally interchangeable ISO 15552 cylinder, you can match the 50 mm bore, 280 mm stroke, PT tapered port threads, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interfaces. The included -S magnet works with AirTAC reed and solid-state electronic sensors. Remember that the rear adjuster and air cushions only manage travel ends; for true load-holding without live pressure, select a SAIL or BSAI cylinder instead.
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 SAIJ50AX280-10S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw lets you shorten the nominal 280 mm stroke by up to 10 mm, creating a usable travel window of 270 to 280 mm. This stopper only sets the end position and does not lock the load without live air pressure.
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