Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X400-50S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- 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 SAIJ200X400-50S
The AirTAC SAIJ200X400-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 400 mm nominal travel to a precise 350-400 mm window during commissioning. As an extruded aluminum barrel design, it integrates dual sensor grooves and operates with PT tapered G3/4 ports. The integrated -S magnet pairs directly with AirTAC CMSE reed and DMSE electronic sensors for exact end-of-stroke detection.
The 40 mm carbon steel rod and M36x2 thread provide robust resistance to mechanical stress, while the 50 mm variable air cushions at both ends manage deceleration smoothly. Remember that the rear stopper mechanism sets the travel end-point but does not lock the load mechanically without sustained air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50S |
|---|---|
| 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 | 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 SAIJ200X400-50S
| 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 SAIJ200X400-50S Is Used
Heavy Press Changeovers
Adjust the 350-400 mm travel window on the fly to accommodate different material thicknesses or pressing depths without replacing the entire actuator assembly.
Large Product Diverter
Fine-tune the retract end-position to safely deflect oversized packages on a sorting line, ensuring the rod clears varying product widths during transit.
Automated Assembly Setup
Dial in the exact end-stop during initial machine commissioning to prevent over-travel damage to high-force tooling, securing precise positioning across runs.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-50S the Right Cylinder?
Choose this SAIJ200X400-50-S when an application requires extreme thrust combined with on-the-fly end-position tuning, avoiding the need to physically swap cylinders or bolt on external stops during product changeovers. If your setup needs slightly less force, stepping down to a 160 mm bore yields 14074 N at 0.7 MPa, whereas moving up is impossible within the standard profile range. For operations needing load-holding during an air pressure drop, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants, as the adjuster here is strictly a travel stop.
Because the 400 mm stroke is substantial, the 40 mm rod still requires an external guide to prevent sagging and side-load damage over extended travel. To achieve a true ISO 15552 replacement match, verify the 200 mm bore, 400 mm stroke, 50 mm adjustment range, PT port thread, and the -S magnet requirement. The compatible SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR configurations.
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 SAIJ200X400-50S FAQ
At 0.9 MPa, the push force increases to 28274 N.
The rear external stopper screw lets you mechanically shorten the 400 mm nominal stroke by up to 50 mm, creating a usable travel window of 350-400 mm. This allows precise end-position tuning without changing the cylinder, though it functions as a stop and not a load-holding lock.
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