Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-50S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX250-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ100 Adjustable Cylinder SAIJ100BX250-50S
The AirTAC SAIJ100X250-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 200 to 250 mm, letting you dial back the nominal 250 mm stroke by up to 50 mm during commissioning.
This variant includes a SUS304 stainless steel rod for corrosion resistance and a magnet for CMSE or DMSE position sensing. It uses PT tapered ports (G1/2) and offers variable air cushions at both ends to manage impact deceleration. The rear adjusting screw functions purely as a travel stop to set end positions and does not lock the load without continuous air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX250-50S Is Used
Variable End-Stop Positioning
Fine-tune the retraction point within the 200-250 mm window to accommodate varying workpiece dimensions without altering the mounting layout.
Machine Changeover Setup
Rapidly adjust the stroke end-position during production line format changes, reducing downtime by avoiding physical cylinder replacement.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-50S the Right Cylinder?
The 50 mm adjustment range is ideal for product changeovers where the exact end-of-stroke position varies slightly, eliminating the need to physically swap out a fixed-stroke SAI cylinder or add external mechanical stops.
For a direct ISO 15552 replacement, match the 100 mm bore, 250 mm nominal stroke, 50 mm adjustment, PT port thread, and -S magnet. Because the 250 mm stroke is substantial, ensure you provide an external guide to handle side loads, as even the robust 25 mm rod can deflect under long unsupported travel. If you need the cylinder to hold its position without live air pressure, select an external rod lock or explore the SAIL or BSAI clamp-lock series 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 SAIJ100 Adjustable Cylinder SAIJ100BX250-50S FAQ
The rear adjuster screw allows you to shorten the effective travel from the 250 mm nominal stroke down to 200 mm. This creates a 200-250 mm adjustable window, acting as a mechanical stop to fine-tune the end position without replacing the cylinder.
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