Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 155mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke155 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-20
The AirTAC SAIJ100X155-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 135 to 155 mm. It delivers 5497 N of push force at 0.7 MPa, making it a robust choice for heavy actuation. The extruded aluminum barrel includes dual sensor grooves for straightforward position feedback.
This specific SKU utilizes a SUS304 stainless steel rod for superior corrosion resistance and ships with PT tapered port threads. The rear adjuster acts strictly as a travel stop to fine-tune end positions without adding external stops. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 155 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX155-20 Is Used
Machine Changeovers
Dial the rear stopper back by up to 20 mm to quickly adapt end positions for varying product sizes on the same line.
Heavy Pressing
Leverage the 5497 N push force at 0.7 MPa for firm pressing and forming tasks requiring precise end-stop tuning.
Washdown Equipment
The SUS304 stainless steel rod provides excellent corrosion resistance for equipment requiring frequent washdowns.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-20 the Right Cylinder?
Select this 100 mm bore actuator when your application demands high force—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while this 100 mm model provides 3927 N at the same pressure. The 20 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-of-stroke position at commissioning without swapping the cylinder. For holding loads without live air pressure, use an external rod lock or pilot-operated check valve, as the rear adjuster only sets the travel end.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 155 mm nominal stroke, 20 mm adjustment, G1/2 port, and mounting interface. Because the 155 mm stroke exceeds 300 mm? No, it is under 300 mm, but for any future longer strokes, an external guide is recommended to manage side loads on the M20x1.5 rod.
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 SAIJ100 Adjustable Cylinder SAIJ100BX155-20 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 155 mm down to 135 mm. This enables fine end-position tuning during commissioning without swapping cylinders.
At 0.7 MPa operating pressure, the 100 mm bore provides 5497 N of push force and 5497 N of pull force. At the maximum 1.0 MPa pressure, it achieves 7068 N push force.
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Standard models usually ship in 3-4 days.
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