Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20S 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 SAIJ80X210-20S
The AirTAC SAIJ80X210-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 4523N of push force at 0.9 MPa and 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 external stops.
This bore 80 unit uses a PT tapered G3/8 port and a 25 mm carbon steel rod with an M20x1.5 thread. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed and DMSE electronic switches. The rear adjuster acts purely as a travel stop for end-position tuning, meaning it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20S |
|---|---|
| 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 SAIJ80X210-20S
| 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 SAIJ80X210-20S Is Used
Machine Changeover
Quickly fine-tune the 190-210 mm travel window during product size transitions on a packaging line without replacing the cylinder or adding external mechanical stops.
Variable End-Stop Positioning
Precisely set the retract end-position for automated conveyor diverters, allowing operators to dial in the exact 20 mm adjustment needed for varying package widths.
Assembly Press Tuning
Dial in the exact end-of-stroke contact force during equipment setup, using the rear stopper to compensate for mechanical wear or part tolerances over time.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X210-20S the Right Cylinder?
Choose this adjustable-stroke model when your assembly requires fine end-position tuning during commissioning or frequent product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your application demands less force, stepping down to a bore 63 cylinder yields 2805N of push force at 0.9 MPa. For higher loads, a bore 100 cylinder provides 7068N.
Because the 210 mm stroke exceeds the 300 mm threshold where side-loading becomes a major risk, ensure you use an external guide to support the load and protect the 25 mm rod. To replace an ISO 15552 cylinder, match the 80 mm bore, 210 mm stroke, 20 mm adjustment, PT G3/8 port, and the -S magnet option. The available SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ80X210-20S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective stroke by up to 20 mm, providing a usable travel window of 190 to 210 mm. It functions purely as an end-position stop and does not lock or hold the load without continuous live air pressure.
At 0.9 MPa, the SAIJ80X210-20-S generates 4523N of push force and 2268N of pull force. The cylinder operates at speeds between 30 and 800 mm/s and features variable air cushions at both ends to manage impact deceleration.
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