Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 260mm 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
- Stroke260 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 SAIJ50AX260-40S
The AirTAC SAIJ50X260-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a solid 982N push force at 0.5 MPa, featuring a 20mm piston rod and a PT tapered G1/4 port. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE solid-state sensors housed in the dual-side barrel grooves.
This specific SKU provides a 220-260mm usable travel window, allowing you to dial back the 260mm nominal stroke by up to 40mm during commissioning. Unlike fixed-stroke alternatives, this built-in rear stopper lets you fine-tune end positions without swapping cylinders or adding external stops. The rod is crafted from SUS420J2 stainless steel for enhanced durability against lateral stress.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 260 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 SAIJ50AX260-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×260 | 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 SAIJ50AX260-40S Is Used
Machine Setup & Changeover
Dial in the exact 220-260mm end position during commissioning or product size transitions without disassembling the line or adding external stopper blocks.
Variable End-Stop Positioning
Fine-tune the retract stroke on the fly to accommodate different material thicknesses or tooling offsets using the 40mm rear adjustment screw.
Sensor-Ready Automation
Leverage the integrated -S magnet with DMSE electronic sensors in the profile grooves to confirm exact end-of-travel positions before triggering the next machine cycle.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-40S the Right Cylinder?
Choose this 50mm bore when your application requires the 982N push force at 0.5 MPa, bridging the gap between the 40mm bore (628N) and the 63mm bore (1559N). The adjustable stroke is ideal for machine setups requiring variable end-stops or frequent product changeovers, providing exact positioning without physical hardware modifications.
For any stroke length of 260mm or more, external guidance is recommended to prevent excessive side-loading on the piston rod. Remember that the rear adjuster functions strictly as a travel stop, not a lock; the SAIJ will not hold a load without live air pressure. For true load-holding, consider the SAIL or BSAI series. This model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ50AX260-40S FAQ
At 0.5 MPa, this 50mm bore cylinder provides a push force of 982N and a pull force of 825N. If you need higher force, stepping up to the 63mm bore yields 1559N of push force at the same pressure.
The rear adjuster acts as a mechanical stop that lets you shorten the 260mm nominal stroke by up to 40mm, providing a usable travel window of 220-260mm. It only sets the travel end and does not lock or hold the load without continuous air pressure.
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