Airtac SAIJ80 Adjustable Cylinder SAIJ80X40-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X40-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 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 SAIJ80X40-20
The AirTAC SAIJ80X40-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N of push force at 0.5 MPa and features a 25mm carbon steel rod with an M20x1.5 thread. By integrating an external adjustment screw, this model allows you to fine-tune the effective travel down from the 40mm nominal stroke, creating a precise 20-40mm usable window without requiring external stops.
This adjuster acts purely as a mechanical stop for end-position tuning during commissioning or product changeovers, and it does not lock the load without live air. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. It supports a reduced SAIJ mounting set comprising Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X40-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X40-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80X40-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAIJ80X40-20 Is Used
End-Stop Calibration
Dial in the exact 20-40mm retraction point during machine commissioning to achieve perfect end-position tuning without adding external stops.
Product Changeover
Quickly adjust the travel window on packaging lines when handling different product sizes, using the rear screw to adapt the stroke on the fly.
High-Force Clamping
Leverage the 2513N push force at 0.5 MPa to securely clamp heavy workpieces while fine-tuning the clamping depth precisely.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X40-20 the Right Cylinder?
Select this 80mm bore when an application requires substantial thrust, stepping up from a 63mm bore that provides 1559N of push force at 0.5 MPa. The adjustable stroke is ideal for setups needing a variable end-stop, offering a 20-40mm travel window to perfectly dial in the retraction point without swapping cylinders. Because the nominal 40mm stroke is short, side-load risks are minimal, but the load must be guided externally if offset forces exist.
For load-holding without continuous air pressure, this cylinder is insufficient; the rear adjuster only sets the travel end. You would need to specify an AirTAC SAIL for pneumatic locking or a BSAI for clamp-locking. To match this ISO 15552 interchangeable cylinder exactly, confirm the 80mm bore, 40mm stroke, 20mm adjustment, PT tapered port thread, carbon steel rod, and no magnet.
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 SAIJ80X40-20 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It can reach a maximum push force of 4523N at 0.9 MPa.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective travel by up to 20mm. This creates a usable stroke window of 20-40mm, allowing you to set the exact end position at commissioning without replacing the cylinder.
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.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80X40-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.