Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20 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 SAIJ80X210-20
The AirTAC SAIJ80X210-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end-of-travel position. It provides a usable travel window of 190 to 210 mm, letting you dial back the nominal 210 mm stroke by up to 20 mm without adding external stops. With a 25 mm carbon steel rod and M20x1.5 thread, it handles robust side loads while delivering 2513 N of push force at 0.5 MPa.
This model uses a PT tapered G3/8 port and includes variable air cushions at both ends to manage impact. The extruded aluminum barrel integrates sensor grooves on both sides for CMSE reed or DMSE electronic switches (requires a -S magnet). It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and rear pivot options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20 |
|---|---|
| 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 SAIJ80X210-20
| 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 SAIJ80X210-20 Is Used
Product Changeover
Dial in the 190-210 mm stroke window during line changeovers to accommodate slightly different package sizes without swapping hardware.
Commissioning Tuning
Fine-tune the exact end position during machine setup to align tooling perfectly, avoiding the need to machine custom spacers.
Press Fit Calibration
Adjust the travel stop on the 80 mm bore to regulate pressing force and depth, leveraging the 2513 N thrust for precise assembly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20 the Right Cylinder?
Select this 80 mm bore cylinder when your application requires 2513 N of push force at 0.5 MPa, stepping up from the 50 mm bore (982 N) for heavier workholding or stepping down from the 100 mm bore (3927 N) to save space. The 20 mm rear adjuster is chosen over a fixed-stroke SAI when you need variable end-stops for product changeovers or commissioning fine-tuning. Remember that the rear adjuster and air cushions only decelerate the travel end; they do not hold the load without live air. For true load-holding, use an external rod lock or pilot-operated check valve, or switch to SAIL or BSAI series cylinders.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 210 mm stroke, 20 mm adjustment range, PT G3/8 port, and the required mounting bracket. For a 210 mm stroke, ensure your structure supports the rod to prevent excessive sag or side-load wear on the seals.
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 SAIJ80X210-20 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 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 210 mm down to 190 mm. It sets the end position and relies on the air cushion for deceleration, but it does not lock or hold the load without continuous air pressure.
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