Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 400mm 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
- Stroke400 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 SAIJ200X400-50
The AirTAC SAIJ200X400-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty motion control. It integrates a rear mechanical stopper that allows you to trim the nominal 400 mm travel back by up to 50 mm, creating a precise 350-400 mm usable stroke window. This on-demand adjustability is ideal for product changeovers, letting you fine-tune the retract end position at commissioning without swapping out the entire actuator or adding external stops.
Delivering 15708 N of push force at 0.5 MPa and 21991 N at 0.7 MPa, this 200 mm bore unit handles massive loads. It features a robust 40 mm carbon steel rod with an M36x2 thread, providing high structural rigidity and excellent resistance to side-loading forces. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed and DMSE electronic switches, while the PT tapered port threads ensure a high-pressure pneumatic seal.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAIJ200X400-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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 SAIJ200X400-50 Is Used
Heavy Press Changeover
Dial in the 350-400 mm stroke window on the fly to accommodate varying material thicknesses in a large-scale metal forming press without changing the cylinder.
Bulk Material Diversion
Adjust the retract position precisely to alter the trajectory of heavy bulk goods on a sorting line, accommodating different container sizes at the end of the conveyor.
Large Fixture Clamping
Fine-tune the end stop during machine setup to ensure massive workholding fixtures clamp heavy steel weldments securely without over-travel.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50 the Right Cylinder?
Selecting this 200 mm bore actuator is appropriate when your application requires maximum thrust—up to 15708 N at just 0.5 MPa—and a flexible 350-400 mm travel range. If you need to step the bore down to reduce cycle time or physical footprint, a 160 mm neighbour provides 10053 N at 0.5 MPa, while stepping up is not available in this standard range. The SAIJ200X400-50 is chosen over a fixed-stroke SAI when a machine processes multiple product sizes and requires a variable end-stop. Because the 400 mm stroke is substantial, an external guide is strongly recommended to prevent rod binding and premature seal wear under heavy offset loads.
When matching this cylinder for an ISO 15552 interchange, verify the 200 mm bore, 400 mm nominal stroke, 50 mm adjustment range, G3/4 PT port thread, and the required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Remember that the rear adjuster is strictly a travel stop, not a locking device; it cannot hold the load safely without live air pressure. For fail-safe load holding without continuous air, you must use an external rod lock, a pilot-operated check valve, or switch to the AirTAC SAIL or BSAI series.
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 SAIJ200X400-50 FAQ
The rear of the cylinder features an external stopper screw that mechanically limits the piston's travel. For this model, you can shorten the 400 mm nominal stroke by up to 50 mm, giving you an adjustable travel window of 350 to 400 mm to fine-tune the retract end position.
This 200 mm bore double-acting cylinder provides a push force of 15708 N and a pull force of 15080 N at 0.5 MPa. At 0.7 MPa, the push force increases to 21991 N, with a maximum rated thrust of 3204 kgf at 1.0 MPa.
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