Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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.
- BoreØ125 mm
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30
The AirTAC SAIJ125X105-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 75-105 mm. Delivering 8590 N of pull force at 0.7 MPa, it handles heavy positioning tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though this specific SKU omits the internal magnet.
This model uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and is equipped with PT tapered port threads. The rear adjuster acts purely as a mechanical stop to fine-tune the end position during commissioning without swapping the cylinder, but it does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX105-30 Is Used
Machine Setup Changeover
Dial in the 75-105 mm travel window precisely during product line changeovers to accommodate varying part sizes without swapping hardware.
Variable End-Stop Positioning
Use the rear mechanical stop to fine-tune the final retracted position of heavy 125 mm bore tooling, ensuring exact placement during commissioning.
Heavy-Duty Assembly Press
Leverage the 8590 N pull force to seat components firmly, using the adjustable stroke to compensate for tooling wear or slight material thickness variations.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30 the Right Cylinder?
Choose this 125 mm bore when the 80 mm class (3518 N push at 0.7 MPa) is insufficient for your tooling payload. The 30 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-stop without adding external stops. For load-holding without continuous air pressure, this standard adjuster is not a lock; you should look at the SAIL or BSAI series instead. To match this ISO 15552 interchangeable cylinder, specify: 125 mm bore, 105 mm stroke, 30 mm adjustment, PT port threads, Basic/FA/LB/TC/FTC/TCM1/TCM2 mountings, and no magnet.
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 SAIJ125 Adjustable Cylinder SAIJ125AX105-30 FAQ
At 0.7 MPa operating pressure, this 125 mm bore cylinder provides 8590 N of pull force and 11045 N of push force. It can deliver a maximum of 1251 kgf at 1.0 MPa.
The rear adjuster is a mechanical stop that lets you trim the effective travel back by up to 30 mm, creating a usable stroke window of 75-105 mm. It sets the end position but does not lock the load without live air pressure.
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