Airtac SAIJ200 Adjustable Cylinder SAIJ200AX90-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX90-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX90-50S
The AirTAC SAIJ200X90-50-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers substantial thrust, pushing 15708N and pulling 15080N at 0.5 MPa. The built-in stopper allows you to trim the nominal 90mm stroke back by up to 50mm, creating a highly versatile 40-90mm usable travel window for precise positioning without adding external stops.
Equipped with a SUS420J2 stainless steel rod (option A) and PT tapered ports, this unit is built for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches. It features a robust 40mm variable air cushion at both ends to manage the heavy kinetic energy of this 200mm bore class.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX90-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX90-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 90 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 SAIJ200AX90-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×90 | 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 SAIJ200AX90-50S Is Used
Heavy Press Tonnage Tuning
Dial in the exact 40-90mm travel window during heavy press commissioning to accommodate varying material thicknesses without physically swapping out the cylinder.
Automated Line Changeover
Quickly adjust the retract end-stop when switching the production line to a new product size, using the rear screw to fine-tune the stroke rather than repositioning hard stops.
High-Force Assembly End-Stop
Leverage the 15708N push force at 0.5 MPa for heavy-duty joining operations while relying on the adjustable stopper to prevent over-travel during final positioning.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX90-50S the Right Cylinder?
Selecting this 200mm bore cylinder makes sense when your application requires extreme force but variable end-position tuning during machine setup or product changeover. If your thrust requirements are lower, stepping down to a 160mm bore provides 10053N push force at 0.5 MPa, which may offer a more compact footprint. However, the SAIJ200X90-50-S is unmatched when you need to dial in a specific 40-90mm travel window on the fly.
When replacing an ISO 15552 cylinder, match the 200mm bore, 90mm nominal stroke, 50mm adjustment range, PT port thread, and -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. Additionally, the 40mm rod diameter and M36x2 thread handle high side loads, but long unsupported strokes still require an external guide.
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 SAIJ200AX90-50S FAQ
The rear adjuster acts as an external mechanical stop that shortens the effective travel. For this model, you can trim the 90mm nominal stroke back by up to 50mm, providing a usable travel window of 40-90mm. Note that this stopper only sets the end position; it does not lock or hold the load without continuous air pressure.
As a 200mm bore cylinder, it generates a push force of 15708N and a pull force of 15080N at 0.5 MPa. At the maximum operating pressure of 1.0 MPa, the push force reaches 3204 kgf.
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