Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-20
The AirTAC SAIJ125X130-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force at 0.5 MPa and features a 130mm nominal stroke that can be fine-tuned down by up to 20mm, providing a precise 110-130mm usable travel window. This built-in adjustability allows you to dial in the retract end position during commissioning without adding external stops.
The extruded aluminum barrel includes sensor grooves on both sides, and the carbon steel rod with an M27x2 thread handles substantial loads. It operates at 30-500mm/s and uses PT tapered port threading. The rear adjuster acts purely as a travel stop for deceleration alongside the air cushions, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 130 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 SAIJ125X130-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×130 | 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 SAIJ125X130-20 Is Used
Machine Setup Changeover
Dial in the exact 110-130mm retract position during product size changes without swapping out the entire actuator.
Variable End-Stop Positioning
Use the rear screw to establish a precise physical stop for heavy-duty clamping tasks that require slight travel adjustments.
Heavy Load Alignment
Leverage the 6136N push force and robust M27x2 rod to align heavy workpieces while tuning the final end position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-20 the Right Cylinder?
Choose this 125mm bore when a smaller 100mm cylinder (providing 3927N push at 0.5MPa) lacks thrust, but a 160mm unit is physically too large. The adjustable 110-130mm window is selected over a fixed SAI cylinder when a machine requires variable end-stops for quick product changeovers. To match this ISO 15552 footprint exactly, specify a 125mm bore, 130mm stroke, 20mm adjustment, PT port, and no magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. If your load-holding application requires stopping without live air, consider an external rod lock or the AirTAC SAIL.
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 SAIJ125X130-20 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the 130mm nominal stroke by up to 20mm, creating a 110-130mm usable travel window. It functions as a mechanical stop for end-position tuning and is not a locking device.
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