Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 210mm 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
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40S
The AirTAC SAIJ80X210-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 170-210 mm usable travel window by allowing you to trim up to 40 mm from the 210 mm nominal stroke. In the 80 mm bore class, it generates 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it suitable for medium-to-heavy actuation. A standard carbon steel rod and PT tapered ports are fitted.
This adjustable design eliminates the need to swap cylinders or add external stops when fine-tuning end positions during commissioning or product changeovers. The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for position detection with AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical travel stop to set deceleration alongside the variable air cushions; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 210 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 SAIJ80X210-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×210 | 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 SAIJ80X210-40S Is Used
Product Changeover Tuning
Dial in the exact 170-210 mm end-position during a packaging line changeover without swapping cylinders or bolting on external mechanical stops.
Variable End-Stop Positioning
Set precise retract distances for machining or clamping operations where the final position must be fine-tuned on-site during commissioning.
Heavy Assembly Actuation
Leverage the 2513 N push force at 0.5 MPa to move heavy pallets or tooling, using the 40 mm adjustment window to compensate for fixture tolerances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40S the Right Cylinder?
Select this 80 mm bore model when an application requires a 170-210 mm stroke window and approximately 2513 N of thrust at 0.5 MPa. If your force requirements are lower, stepping down to a 63 mm bore provides 1559 N of push force, while stepping up to a 100 mm bore yields 3927 N. The adjustable stroke is ideal for machines that process varying product sizes, allowing you to dial in the exact end-stop without hardware changes. For load-holding without continuous air pressure, this cylinder is not a lock; consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead.
As a dimensionally interchangeable ISO 15552 cylinder, it uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. When replacing a cylinder, match the 80 mm bore, 210 mm stroke, 40 mm adjustment, G3/8 PT ports, and the -S magnet requirement. With a 210 mm stroke, the 25 mm rod and M20x1.5 thread provide robust durability, but always ensure external guidance for any heavy side loads.
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 SAIJ80X210-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum rated pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw allows you to mechanically shorten the stroke by up to 40 mm from the 210 mm nominal length, creating a 170-210 mm usable travel window. This stopper sets the end position and works with the air cushions to decelerate the load, but it does not lock or hold the load without live air pressure.
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