Airtac SAIJ200 Adjustable Cylinder SAIJ200X40-20
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X40-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200X40-20
The AirTAC SAIJ200X40-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, designed to provide immense thrust within a compact travel envelope. By utilizing the external 20mm adjustment screw, the effective travel can be precisely dialed back from its 40mm nominal stroke down to a 20mm minimum, creating a 20-40mm usable window. This allows operators to fine-tune end positions at commissioning without physically swapping the cylinder or adding external stops.
This heavy-duty actuator utilizes a robust 40mm carbon steel rod with an M36x2 thread, paired with a G3/4 PT tapered port to handle the high air volume required for its 30-500mm/s operating speed. The extruded aluminum barrel incorporates sensor grooves on both sides, and because no magnet is specified, position sensing would require adding the -S option to support CMSE reed or DMSE electronic switches. The rear adjuster acts strictly as a travel stop to set deceleration alongside the standard air cushions, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X40-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X40-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 40 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X40-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×40 | 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 SAIJ200X40-20 Is Used
High-Tonnage Press Tuning
Dial in the exact 20-40mm compression distance during setup for heavy pressing or forming operations, ensuring perfect material deformation without replacing the actuator.
Variable Product Changeovers
Quickly adjust the end-stop position on a packaging or assembly line to accommodate different product sizes, using the rear screw to shift the stroke window on the fly.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X40-20 the Right Cylinder?
Selecting the SAIJ200X40-20 is ideal when an application requires extreme force within a very short, variable travel distance, such as high-tonnage clamping or pressing tasks that need exact end-position tuning during product changeovers. Conversely, if a longer fixed stroke is needed for standard extension tasks, the non-adjustable SAI series provides a direct dimensionally interchangeable per ISO 15552 alternative.
When configuring an ISO 15552 replacement, match the 200mm bore, 40mm nominal stroke, 20mm adjustment range, G3/4 PT port, and carbon steel rod. The available mounting set for this profile cylinder includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options. Because the stroke is under 300mm, side-load risks are minimized, but the massive 40mm rod diameter still provides excellent resistance to minor deflection. Remember that for load-holding without live pressure, this cylinder must be paired with an external rod lock, a pilot-operated check valve, or swapped for a SAIL or BSAI variant.
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 SAIJ200X40-20 FAQ
If the pressure is increased to 0.7 MPa, the push force rises to 21991N.
The rear adjusting screw acts as a mechanical stopper that allows you to shorten the effective stroke from the 40mm nominal length down to a minimum of 20mm. This creates a 20-40mm usable travel window for fine-tuning the end position at commissioning without needing external stops.
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