Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40 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 SAIJ80X210-40
The AirTAC SAIJ80X210-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 170 to 210 mm window. Built with an extruded aluminum barrel, it delivers a robust 2513 N push force at 0.5 MPa, making it suitable for heavier industrial handling. The PT tapered port threads and carbon steel rod provide durable, standard pneumatic integration.
This model uses a 25 mm diameter rod with an M20x1.5 thread, which handles side loads well, though the 210 mm stroke still benefits from an external guide for optimal longevity. The rear adjustment screw acts purely as a mechanical stop to set the retract position during commissioning or product changeovers; it is not a locking device and requires live air to hold the load. For position holding without pressure, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40 |
|---|---|
| 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 SAIJ80X210-40
| 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 SAIJ80X210-40 Is Used
Product Changeover
Dial in the 170-210 mm travel window during format changeovers to accommodate different package sizes without repositioning physical hard stops.
Diverting & Sorting
Provides 2513 N of push force at 0.5 MPa to deflect heavy items on a sorting line, with rear fine-tuning to sync the divert position perfectly.
Machine Setup
Eliminates the need to machine custom spacer blocks during commissioning by allowing operators to set the exact retract end-position via the rear screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-40 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (982 N push at 0.5 MPa) lacks the thrust for your process, but a 100 mm bore (3927 N) would be excessive overkill. The 40 mm adjustment range is ideal for machines that process multiple product sizes, allowing you to dial in the exact end-stop without swapping cylinders or adding external stops. If your application requires the load to be held mechanically without continuous air pressure, a plain SAIJ is insufficient since the adjuster only acts as a travel stop, not a brake.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 210 mm nominal stroke, 40 mm adjustment code, G3/8 port, and mounting style. SAIJ supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because this model lacks the -S suffix, it does not include a magnet for CMSE or DMSE electronic sensors.
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 SAIJ80X210-40 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 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw allows you to shorten the nominal 210 mm stroke by up to 40 mm, creating a usable travel window of 170 to 210 mm. The screw functions as a mechanical end-stop for position tuning and does not lock the load without live air pressure.
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