Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50S
The AirTAC SAIJ200X155-50-S is a double-acting ISO 15552 profile cylinder featuring an integrated rear stroke adjuster. It provides a usable travel window of 105 to 155 mm, allowing you to dial back the nominal 155 mm stroke by up to 50 mm during commissioning. Delivering a robust 15708 N of push force at 0.5 MPa, it is built for heavy-duty positioning tasks.
This SKU features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and includes a piston magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on three sides, and the PT tapered ports ensure a tight, reliable pneumatic seal.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 155 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 SAIJ200AX155-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×155 | 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 SAIJ200AX155-50S Is Used
Heavy Pressing Operations
Provides 15708 N of thrust at 0.5 MPa for assembling large components, with the 50 mm adjuster allowing precise tuning of the final pressing depth.
Product Changeover
Quickly shift the effective stroke between 105 and 155 mm to accommodate varying product sizes on a high-mix line without changing the cylinder.
Large Fixture Positioning
Moves heavy welding or machining fixtures into place, using the -S magnet and DMSE sensors to confirm end-of-travel positions.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50S the Right Cylinder?
Choose this 200 mm bore cylinder when your application demands the highest thrust class—stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N. The 50 mm rear adjustment range is ideal for fine-tuning end positions during product changeovers without adding external stops or swapping the cylinder. For any required load-holding without live air pressure, note that this rear adjuster acts only as a travel stop; you must specify an AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinder instead.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 155 mm stroke, 50 mm adjustment, PT port thread, and the -S magnet option. Given the 155 mm stroke is under the 300 mm side-load threshold, the robust 40 mm rod and M36x2 thread handle standard loads well, though external guidance is recommended if pushing heavy off-center loads. Available mountings include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ200AX155-50S FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N.
The rear adjuster screw acts as an external stopper, allowing you to shorten the effective travel from the nominal 155 mm down to 105 mm. It is a travel stop that sets the end position, not a lock, and the load will not hold position without live air pressure.
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