Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-40 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 SAIJ200AX280-40
The AirTAC SAIJ200X280-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 280 mm stroke that can be dialed back by up to 40 mm, creating a precise 240-280 mm usable travel window for commissioning without external stops. Delivering 15708 N of push force at 0.5 MPa, it is built for heavy-duty positioning.
This bore uses a G3/4 port and a robust 40 mm rod with an M36x2 thread to manage high side loads. The rod is constructed from SUS420J2 stainless steel for enhanced corrosion resistance. Standard variable air cushions at both ends decelerate the heavy piston, but note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-40 |
|---|---|
| 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 SAIJ200AX280-40
| 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 SAIJ200AX280-40 Is Used
Heavy Press Positioning
Dial in the exact 240-280 mm travel window during setup to ensure massive pressing forces are applied accurately without external mechanical stops.
Product Line Changeover
Quickly adjust the end-position by up to 40 mm to accommodate different large product sizes on the same conveyor line.
Automated Assembly Stops
Use the robust 40 mm rod and M36x2 thread to handle significant side loads while fine-tuning the stroke for precise component placement.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-40 the Right Cylinder?
Choose this 200 mm bore when your application requires the maximum standard thrust class, stepping up from a 160 mm bore that yields 10053 N at 0.5 MPa. The adjustable stroke is ideal for machinery requiring variable end-stops or product changeover, saving the effort of swapping a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 280 mm stroke, 40 mm adjustment range, PT tapered port thread, and mounting style. Supported mounts include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 280 mm stroke is substantial, always use an external guide to prevent rod bending under high side loads.
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 SAIJ200AX280-40 FAQ
At an operating pressure of 0.5 MPa, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from 280 mm down to 240 mm. This allows fine-tuning of the end position during commissioning, but it does not lock or hold the load without live air pressure.
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