Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 35mm 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
- Stroke35 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-30
The AirTAC SAIJ125X35-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. By turning the integrated stopper screw at the back, you can fine-tune the effective travel window down from the 35mm nominal stroke to anywhere between 5 and 35mm. This allows precise end-position calibration during commissioning without adding bulky external stops.
The unit features a SUS420J2 stainless steel rod (option A) for enhanced resistance to scoring and corrosion compared to standard carbon steel. It operates at speeds of 30-500mm/s and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though this specific SKU is built without a magnet.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 35 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 SAIJ125AX35-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×35 | 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 SAIJ125AX35-30 Is Used
Short-Stroke Pressing
Dial in the exact clamping end-stop between 5 and 35mm during machine setup to accommodate varying material thicknesses without swapping actuators.
Product Changeover
Quickly reposition the retract end-point on a packaging line by adjusting the rear screw, allowing rapid changeover for different package sizes.
Assembly Station Calibration
Fine-tune the pressing depth of bearings or pins on an assembly line, using the built-in stopper to compensate for mechanical wear over time.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-30 the Right Cylinder?
Choose this 125mm bore actuator when a 100mm bore (providing 3927N push at 0.5MPa) is insufficient for your load, but a larger 160mm bore (10053N at 0.5MPa) would be excessive. The 30mm adjustment range is ideal for applications requiring exact short-stroke positioning that must be dialed in on-site. If your process requires holding a load without continuous live air pressure, note that the rear adjuster functions only as a travel stop, not a brake; you should select an SAIL or BSAI cylinder instead. For a direct ISO 15552 replacement, match the 125mm bore, 35mm stroke, PT port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ125AX35-30 FAQ
At 0.5MPa, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It operates at a speed range of 30-500mm/s.
The rear adjuster acts as a mechanical stop that lets you shorten the 35mm nominal stroke down to a 5mm effective travel. It sets the end position but does not lock or hold the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.