Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 280mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20
The AirTAC SAIJ200X280-20 is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you fine-tune the retract end-position during commissioning. It provides a usable travel window of 260-280 mm, trimming up to 20 mm off the 280 mm nominal stroke without adding external stops. In the 200 mm bore class, it generates 21991 N of push force at 0.7 MPa, making it suitable for heavy-duty pressurizing and clamping.
This variant uses a SUS420J2 stainless steel piston rod (option A) for higher corrosion resistance than standard carbon steel. It features PT tapered port threads (G3/4) and dual-sided sensor grooves ready for AirTAC CMSE reed and DMSE electronic switches if a magnet is added later. The rear adjuster acts purely as a mechanical stop to set the travel end, not as a lock to hold a load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×280 | 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 SAIJ200 Adjustable Cylinder SAIJ200AX280-20 Is Used
Heavy Press Setup
Dial in the exact 260-280 mm retract position during machine commissioning to set precise heavy-forming contact points without machining external stopper blocks.
Product Changeover
Quickly trim the stroke back by up to 20 mm on a packaging line when switching to a slightly shorter product format, saving downtime on the factory floor.
Large Assembly Jigs
Use the 21991 N push force at 0.7 MPa to seat heavy components, relying on the rear screw to fine-tune the final clamping distance safely.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-20 the Right Cylinder?
Choose this 200 mm bore cylinder when your application requires massive thrust, such as 21991 N push force at 0.7 MPa, alongside precise end-position tuning. If you do not need the full 280 mm stroke or want to dial in a specific 260-280 mm window during product changeovers, the SAIJ rear adjuster eliminates the need to swap cylinders. For lighter duty, stepping down to a 160 mm bore yields 14074 N push force at 0.7 MPa.
To replace this cylinder per ISO 15552 dimensions, match the 200 mm bore, 280 mm stroke, 20 mm adjustment range, PT G3/4 port, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that SAIJ omits FB, CA, CB, and CR mounts. Because the 280 mm stroke is substantial, the M36x2 rod should still be guided externally to prevent side-load damage. For load-holding without live air, use a SAIL or BSAI cylinder instead of relying on this 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 SAIJ200 Adjustable Cylinder SAIJ200AX280-20 FAQ
The rear adjuster screw lets you shorten the effective travel from the 280 mm nominal stroke down to 260 mm. It acts as a mechanical stop to fine-tune the end position during setup, but it does not lock or hold the load without continuous air pressure.
At 0.7 MPa, the SAIJ200X280-20 provides 21991 N of push force and 15080 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 3204 kgf of push force.
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