Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-50S 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
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-50S
The AirTAC SAIJ50X260-50-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, allowing you to dial back the nominal 260 mm travel by up to 50 mm. This yields a usable end-position window of 210-260 mm, which is ideal for fine-tuning machine stops during product changeovers without swapping hardware. It delivers 982 N of push thrust at 0.5 MPa and features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance.
Equipped with a magnet (-S), this unit supports AirTAC CMSE reed and DMSE electronic solid-state sensors housed in the dual-side extruded barrel grooves. The rear adjuster acts purely as a mechanical stop to set the retract end-position; it does not lock the load. For applications requiring position holding without live air pressure, a SAIL or BSAI series cylinder is required instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-50S |
|---|---|
| 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 SAIJ50AX260-50S
| 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 SAIJ50AX260-50S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance between 210 and 260 mm during machine commissioning to accommodate different material thicknesses without adding external stopper blocks.
Product Changeover Systems
Quickly adjust the stroke window on packaging lines when switching between box sizes, using the rear screw to set a new end position while maintaining a standard ISO 15552 footprint.
Sensor-Driven Positioning
Leverage the integrated magnet with DMSE electronic sensors to confirm the adjusted end position, ensuring repeatable actuation across multiple setpoints within the 50 mm trim range.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-50S the Right Cylinder?
Select this 50 mm bore when 40 mm cylinders (providing 628 N push at 0.5 MPa) lack the necessary force, but stepping up to a 63 mm bore (1559 N at 0.5 MPa) would overcomplicate the footprint. The adjustable 50 mm trim range is chosen over a fixed SAI stroke when a machine requires variable end-stops to accommodate multiple product sizes on the same line.
Because the 260 mm stroke exceeds 300 mm is false here, but at 260 mm you should still evaluate side-loading. The 20 mm rod and M16x1.5 thread handle moderate side loads well, but long unsupported strokes still necessitate an external guide rail. When replacing an ISO 15552 cylinder, match the 50 mm bore, 260 mm stroke, 50 mm adjustment, PT tapered port thread, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ50AX260-50S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push thrust and 825 N of pull thrust. At the maximum 1.0 MPa operating pressure, it delivers up to 200 kgf.
The rear adjuster screw lets you mechanically shorten the effective travel from the nominal 260 mm down to 210 mm. This creates a 50 mm usable tuning window for setting end positions, but the adjuster acts only as a stop and does not hold the load without live air pressure.
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