Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX250-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke250 mm
- Port sizeG3/8
- 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 SAIJ80 Adjustable Cylinder SAIJ80BX250-50
The AirTAC SAIJ80X250-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 250 mm travel that can be dialed back by up to 50 mm, yielding a usable 200-250 mm end-position window for precise machinery setup.
This unit is configured with a SUS304 stainless steel rod for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing you to add CMSE reed or DMSE electronic switches later if positioning feedback becomes necessary. It supports a dedicated mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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 SAIJ80 Adjustable Cylinder SAIJ80BX250-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX250-50 Is Used
Product Changeovers
Dial in the 200-250 mm travel window during format changes on a packaging line, using the rear screw to set new retract endpoints rapidly.
Variable End Stops
Adjust the effective stroke on the fly for assembly stations processing different part lengths, leveraging the 50 mm trim range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-50 the Right Cylinder?
The 50 mm adjustment range is perfect for product changeovers, allowing operators to fine-tune the retract distance without swapping cylinders or adding external stops. Because the 250 mm stroke exceeds 300 mm, ensure you use an external guide to support the load and mitigate side-load wear on the 25 mm rod.
For a direct ISO 15552 replacement, match the 80 mm bore, 250 mm nominal stroke, 50 mm adjustment, PT port thread, and the required mounting hardware. Note that the rear adjuster functions strictly as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series instead of relying on the standard cushion.
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 SAIJ80 Adjustable Cylinder SAIJ80BX250-50 FAQ
At a maximum 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster acts as a mechanical stop that shortens the 250 mm nominal stroke by up to 50 mm, providing a usable travel window of 200-250 mm. It only sets the end position and does not lock the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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