Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30S 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 SAIJ100AX125-30S
The AirTAC SAIJ100X125-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 95 to 125 mm, allowing you to dial back the nominal 125 mm stroke by up to 30 mm. Delivering 3927 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod and includes a magnet for CMSE reed and DMSE electronic sensors.
The external stopper screw lets you fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. The adjuster acts only as a travel stop and does not hold the load without live air; for position holding without pressure, consider SAIL or BSAI models. The mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30S |
|---|---|
| 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 SAIJ100AX125-30S
| 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 SAIJ100AX125-30S Is Used
Product Size Changeovers
Quickly modify the 95-125 mm travel window during line changeovers to accommodate varying product lengths without replacing the actuator.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to dial in exact clamping or pressing distances on the fly.
Variable End Stops
Use the rear adjuster to set precise retraction limits for automated assembly processes requiring flexible travel endpoints.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-30S the Right Cylinder?
Choose this 100 mm bore when you need substantial thrust—3927 N push at 0.5 MPa—over a variable travel range. If your application requires less force, stepping down to an 80 mm bore yields 2513 N push at 0.5 MPa. The adjustable stroke is ideal for product-size changeovers where the exact end position must be dialed in on the fly. When matching an ISO 15552 replacement, verify the 125 mm stroke, 30 mm adjustment, PT tapered ports, and the -S magnet.
Although 125 mm is a moderate stroke, the 25 mm rod diameter handles side loads well, but any long unsupported tooling should still use an external guide. The SAIJ100X125-30-S operates at speeds of 30-800 mm/s and uses variable air cushions at both ends to soften end-of-stroke impacts.
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 SAIJ100AX125-30S FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder 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 acts as an external stopper that allows you to shorten the effective stroke by up to 30 mm. This creates a usable travel window of 95 to 125 mm, enabling fine-tuning of the end position without changing the cylinder.
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