Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-40
The AirTAC SAIJ100X50-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, engineered for applications requiring exact end-position calibration. By integrating a 40mm adjustment mechanism onto a 50mm nominal stroke, this model yields a highly versatile 10-50mm usable travel window. It provides a robust push force of 3927N and pull force of 3681N at 0.5 MPa, making it suitable for medium-to-heavy industrial operations.
This unit features a standard carbon steel piston rod and a G1/2 port. Unlike fixed-stroke actuators, the rear mechanical stopper allows for fine-tuning during commissioning without adding external stops. It supports a speed range of 30-800 mm/s and utilizes adjustable air cushions at both ends to decelerate the load smoothly. The rear adjuster acts purely as a travel stop and does not lock the load; for position holding without live air pressure, consider the SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAIJ100X50-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SAIJ100X50-40 Is Used
Product Changeover Dials
Quickly reconfigure the 10-50mm stroke end-stop on packaging lines when switching to different product sizes without swapping the cylinder.
Commissioning Calibration
Fine-tune the exact retraction end-position during machine setup to perfect pressing or clamping force without adding external mechanical stops.
Variable End-Stop Forming
Adjust the rear stopper to alter the working stroke depth for short-stroke metal forming or bending tasks that require precise positional limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-40 the Right Cylinder?
Select this 100mm bore actuator when your process demands a short, highly adjustable stroke within a 10-50mm window. If your application requires less force, stepping down to an 80mm bore yields 2513N of push force at 0.5 MPa, whereas a 125mm bore increases output to 6136N. The SAIJ100X50-40 is chosen over a fixed SAI cylinder when machine setups involve frequent product-size changeovers that require variable end-stops.
When replacing an ISO 15552 cylinder, ensure you match the 100mm bore, 50mm nominal stroke, 40mm adjustment range, G1/2 port, and the specific mounting accessory. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR. This actuator uses a carbon steel rod with an M20x1.5 thread; while a larger rod handles side loads well, always use an external guide for heavy radial loads.
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 SAIJ100X50-40 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides a push force of 3927N and a pull force of 3681N. At 0.9 MPa, the push force increases to 7068N.
The rear adjuster screw lets you trim the effective travel by up to 40mm from the 50mm nominal stroke, creating a usable travel window of 10-50mm. The adjuster acts as a mechanical stop to set the end-position and does not hold the load without live air pressure.
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