Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 260mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke260 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-50
The AirTAC SAIJ80X260-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N pull force at 0.5 MPa, utilizing a 25mm carbon steel piston rod and G3/8 PT ports. By turning the external rear stopper, you can trim the nominal 260mm travel back by up to 50mm, creating a precise 210-260mm usable window. This allows fine-tuning of the end position during commissioning without adding external stops.
The extruded aluminum barrel features sensor grooves on both sides for CMSE reed or DMSE electronic switches if a magnet is later specified. SAIJ supports a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and CA options. The standard carbon steel rod handles high side-load stress well, though a 260mm stroke still benefits from an external guide rail to prevent premature wear.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 260 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80X260-50 Is Used
Product Changeovers
Quickly adjust the 210-260mm travel window to accommodate different package sizes on a packaging line without swapping cylinders.
Commissioning Calibration
Fine-tune the retract end-position during machine setup to dial in exact pressing or locating distances without external stopper blocks.
Adjustable End Stops
Set precise variable end-stops for assembly stations where the rear stroke must be occasionally trimmed to prevent over-travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-50 the Right Cylinder?
Select this 80mm bore when an application demands high thrust (up to 2513N pull at 0.5 MPa) alongside variable end-stop positioning. If you need less force, step down to the 50mm bore offering 825N pull; if your load requires more, the 100mm bore provides 3681N pull. The SAIJ80X260-50 is chosen over a fixed SAI when a machine handles multiple product sizes, allowing operators to dial in the 210-260mm travel window on the fly.
Because the 260mm stroke exceeds 300mm? No, but at 260mm, an external guide is still recommended for heavy loads. Remember that the rear adjuster functions strictly as a travel stop, not a lock. The cylinder cannot hold a load without live air pressure; for true pneumatic locking, select the SAIL or BSAI series instead. This model is dimensionally interchangeable per ISO 15552, featuring PT ports and a non-magnetic standard rod.
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 SAIJ80X260-50 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of pull force and 3518N of push force. It operates at speeds between 30-800 mm/s.
The rear external stopper allows you to shorten the 260mm nominal stroke by up to 50mm, creating an adjustable travel window of 210-260mm. The adjuster acts as a mechanical stop and does not lock the load without live air pressure.
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