Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-75 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 SAIJ50BX260-75
The AirTAC SAIJ50X260-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 75 mm, creating a usable window of 185-260 mm. This 50 mm bore generates 982 N of push thrust at 0.5 MPa, making it well-suited for moderate-force handling tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This specific configuration is built with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The rear adjustment mechanism acts purely as a mechanical stop to fine-tune the end position during commissioning; it does not lock or hold the load without live air pressure. For applications requiring position holding without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-75 |
|---|---|
| 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 SAIJ50BX260-75
| 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 SAIJ50BX260-75 Is Used
Machine Changeover
Dial in the exact end position during product size changeovers without swapping actuators or adding external stopper blocks.
Variable End Stops
Set precise retract distances within the 185-260 mm travel window to accommodate varying material lengths on the fly.
Commissioning Tuning
Fine-tune the final end position during initial machine setup to compensate for mechanical tolerance stack-up.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-75 the Right Cylinder?
Choose this 50 mm bore adjustable-stroke cylinder when your machine setup requires variable end stops or frequent product-size changeovers without physically swapping out the actuator. If your application demands higher force, stepping up to the 63 mm bore yields 1559 N of push thrust at 0.5 MPa, while dropping to a 40 mm bore reduces it to 628 N. Because the nominal stroke is 260 mm, the 20 mm rod and M16x1.5 thread provide robust support, though an external guide is recommended to manage side loads on longer travels.
When specifying a replacement, verify the 50 mm bore, 260 mm stroke, 75 mm adjustment range, PT port thread, and standard mounting interface. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR configurations found in some standard lines. This model does not include a magnet for position sensing.
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 SAIJ50BX260-75 FAQ
At a 0.5 MPa operating pressure, this 50 mm bore double-acting cylinder 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.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 260 mm nominal stroke by up to 75 mm, providing an effective travel range of 185 to 260 mm. It only decelerates and sets the end position; it does not lock the load without live air pressure.
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