Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 225mm 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
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50S
The AirTAC SAIJ200X225-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that dials back the nominal 225 mm travel by up to 50 mm. This creates a precise 175-225 mm usable window for exact end-position tuning during commissioning without adding external stops. As the largest bore in the series, it delivers massive thrust, pushing with 15708 N and pulling with 15080 N at 0.5 MPa.
This variant includes a magnet for position sensing and uses a SUS420J2 stainless steel piston rod (code A) for improved corrosion resistance. The extruded aluminum barrel features sensor grooves on both sides, directly supporting AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjustment screw acts purely as a mechanical stop to set the travel end and relies on the integrated air cushions for deceleration; it does not lock the load.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 225 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 SAIJ200AX225-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×225 | 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 SAIJ200AX225-50S Is Used
Heavy Press Tonnage
Provides up to 21991 N of push force at 0.7 MPa for high-tonnage pressing, forming, or riveting operations requiring exact bottom-out positions.
Product Changeover
Dials in the 175-225 mm stroke window during line format changes, allowing operators to reposition the end-stop for different part sizes without swapping hardware.
Automated Clamp Jigs
Secures large workpieces on machining centers, using the 40 mm SUS420J2 stainless rod to withstand harsh industrial environments while setting precise clamping depth.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50S the Right Cylinder?
Choose this 200 mm bore when your application requires moving heavy loads that exceed the 10053 N push force of the 160 mm bore at 0.5 MPa. An adjustable-stroke cylinder is selected over a fixed SAI model when a machine requires variable end-stops to handle quick product changeovers. Because the nominal 225 mm stroke is below the 1500 mm maximum standard stroke for this bore, it is a stockable configuration.
For any application approaching or exceeding 300 mm of stroke, external guide rails are recommended to manage side loads, though this 225 mm unit's robust 40 mm rod and M36x2 thread handle substantial stress. If the machine needs to hold a load in place without continuous live air pressure, this cylinder's adjuster will not suffice; you should pivot to the SAIL air-released lock or BSAI clamp-lock series instead. This unit uses PT tapered ports and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ200AX225-50S FAQ
At 0.5 MPa, this 200 mm bore cylinder generates 15708 N of push force and 15080 N of pull force. At 0.7 MPa, the push force increases to 21991 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 225 mm nominal stroke by up to 50 mm, providing a usable travel window of 175 to 225 mm for fine-tuning without changing the cylinder.
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