Airtac SAIJ80 Adjustable Cylinder SAIJ80X25-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X25-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 25mm 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
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X25-20
The AirTAC SAIJ80X25-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 2513N push force at 0.5 MPa and features a usable travel window of 5 to 25 mm, letting you dial back the stroke by up to 20 mm during commissioning.
This model uses a 25 mm carbon steel rod with an M20x1.5 thread, which handles side loads well, though the 25 mm stroke is short enough to rarely need external guiding. It omits the FB, CA, CB and CR mounts, offering Basic, FA, LB, TC, FTC, TCM1 and TCM2 interfaces.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X25-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X25-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 25 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 SAIJ80X25-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×25 | 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 SAIJ80X25-20 Is Used
Position Calibration
Fine-tune the end stop within the 5-25 mm window to perfectly calibrate pressing positions without adding external spacers.
Machine Changeover
Quickly adapt the cylinder travel for different product sizes on a shared line, reducing setup downtime.
Short-Stroke Clamping
Leverage the 2513N push force for heavy clamping tasks where exact material thicknesses vary slightly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X25-20 the Right Cylinder?
Choose this 80 mm bore if the 50 mm bore (offering 982N push at 0.5 MPa) is too weak, but you want to avoid the larger 100 mm size. The rear adjuster acts as a travel stop, not a lock; it cannot hold a load without live air. For true load-holding without pressure, select the SAIL or BSAI series.
When matching an ISO 15552 replacement, verify the 80 mm bore, 25 mm stroke, 20 mm adjustment, G3/8 PT port, and your required mounting accessory. Because the stroke is under 300 mm, side-load stress is minimal.
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 SAIJ80X25-20 FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa operating pressure, it delivers up to 513 kgf.
The nominal stroke is 25 mm, but the rear adjuster allows you to shorten the travel by up to 20 mm, creating an effective working stroke window of 5 to 25 mm.
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