Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30
The AirTAC SAIJ100X125-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that creates a 95-125 mm usable travel window from its 125 mm nominal length. Delivering 3927 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This adjustable model allows operators to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. The rear adjuster functions strictly as a travel stop, meaning it does not hold the load without live air pressure. For applications requiring true position holding, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 125 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 SAIJ100AX125-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×125 | 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 SAIJ100AX125-30 Is Used
Product Changeover
Dial in the 95-125 mm travel window during line changeovers to accommodate slight variations in product dimensions without changing hardware.
Commissioning Calibration
Fine-tune the exact retract end position during machine setup, using the rear stopper to perfect the timing without installing external physical stops.
Assembly Pressing
Apply 3927 N of push force at 0.5 MPa for pressing operations while retaining the flexibility to adjust the stroke depth for different assembly components.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30 the Right Cylinder?
Choose this 100 mm bore when you need more force than a 63 mm bore provides (1559 N at 0.5 MPa) but want to avoid the heavier 125 mm class. The 30 mm adjustment range is ideal for product changeovers where exact end-of-stroke positioning varies slightly. Since the 125 mm stroke is under 300 mm, side-load stress is minimal, though the 25 mm rod diameter handles standard loads well.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 125 mm nominal stroke, 30 mm adjustment, PT G1/2 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This configuration omits the FB, CA, CB, and CR mounts. Because no magnet is specified, position sensing requires adding a -S option to use CMSE reed or DMSE electronic sensors.
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 SAIJ100AX125-30 FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa the push force increases to 5497 N.
The rear adjuster allows you to shorten the 125 mm nominal stroke by up to 30 mm, creating a usable travel window of 95-125 mm. It acts as a mechanical stop to set the end position and is not a lock.
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