Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-50 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 SAIJ80X210-50
The AirTAC SAIJ80X210-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 210 mm stroke that can be dialed back by up to 50 mm, creating a precise 160 to 210 mm usable travel window. This bore size delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it suitable for heavier actuation tasks.
The external adjustment screw acts strictly as a travel stop for end-position tuning during commissioning. It does not lock the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches, and the carbon steel rod with an M20x1.5 thread handles robust side loads.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-50 |
|---|---|
| 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 SAIJ80X210-50
| 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 SAIJ80X210-50 Is Used
Variable End-Stop Setup
Dial in the exact 160 to 210 mm travel distance during machine commissioning to accommodate different product lengths without changing hardware.
Product Changeover Lines
Quickly adjust the rear stopper by up to 50 mm to handle varying package sizes on a conveyor system, reducing downtime between production runs.
Heavy-Duty Positioning
Leverage the 2513 N push force at 0.5 MPa to move heavy jigs or fixtures into exact alignment before a secondary clamping operation.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-50 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (982 N push at 0.5 MPa) lacks the necessary thrust, but a 100 mm bore (3927 N push at 0.5 MPa) is oversized. The 50 mm adjustment range is ideal for product-size changeovers, allowing you to set variable end-stops without swapping the entire cylinder or adding external stops. For strokes of 210 mm, ensure you use an external guide to support the rod against side loads.
This cylinder uses a PT tapered port and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552. If your application requires true load-holding without continuous air pressure, consider the SAIL or BSAI series instead of relying on the adjuster.
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 SAIJ80X210-50 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 operating pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 50 mm from the 210 mm nominal length, providing a usable travel window of 160 to 210 mm. This acts as a mechanical stop for fine-tuning end positions and does not function as a lock to hold the load without live air.
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