Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-40S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 160mm 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
- Stroke160 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-40S
The AirTAC SAIJ125X160-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 120-160 mm for precise end-position tuning. Delivering 6136 N of push force at 0.5 MPa, it handles heavy loads without needing external stops during machine changeovers. This unit features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet for CMSE and DMSE sensors.
The rear adjuster acts strictly as a travel stop to decelerate the piston, meaning it does not hold the load without live air pressure. Operating at 30-500 mm/s, it utilizes a PT tapered port thread and retains standard variable air cushions at both ends. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-40S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 SAIJ125AX160-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×160 | 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 SAIJ125AX160-40S Is Used
Product Size Changeover
Dial in the exact 120 to 160 mm retract distance during packaging format changes without physically replacing the cylinder or adding shims.
Heavy Clamping Setup
Leverage 6136 N of thrust at 0.5 MPa to secure heavy workpieces, using the rear stopper to fine-tune the clamp position precisely.
End-Stop Calibration
Trim the stroke by up to 40 mm during machine commissioning to perfectly align tooling endpoints without mechanical modifications.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-40S the Right Cylinder?
Choose this 125 mm bore when a 100 mm cylinder (providing 3927 N push at 0.5 MPa) lacks thrust, but a 160 mm bore (10053 N) is oversized. The adjustable 120-160 mm window is ideal for product-size changeovers, allowing you to dial in the exact retract distance without swapping the cylinder. For load-holding without continuous air pressure, integrate an external pilot-operated check valve or select an AirTAC SAIL or BSAI model instead of relying on the adjuster.
To match this ISO 15552 interchangeable cylinder, specify: 125 mm bore, 160 mm nominal stroke, 40 mm adjustment, PT ports, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 160 mm stroke is relatively short for this bore, side-load stress is minimal, but external guides are still recommended for heavy off-center loads.
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 SAIJ125AX160-40S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it delivers a peak push force of 1251 kgf.
The rear adjuster allows you to shorten the effective travel from the 160 mm nominal stroke down to 120 mm. This stopper mechanically limits the retract stroke for fine-tuning at commissioning, but it does not lock the load without live air pressure.
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