Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-10
The AirTAC SAIJ125X80-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 80mm stroke that can be dialed back by up to 10mm, creating a precise 70-80mm usable travel window for exact end-position tuning during commissioning. Delivering 6136N of push force at 0.5MPa, it handles heavy-duty positioning tasks with ease.
This model features a robust 32mm carbon steel piston rod and a PT tapered G1/2 port. It uses variable air cushions at both ends to decelerate loads smoothly. The rear adjuster acts solely as a travel stop and does not hold the load without live air; for position holding without pressure, consider the SAIL or BSAI series. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAIJ125X80-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SAIJ125X80-10 Is Used
Heavy-Duty Press Tuning
Dial in the exact end-position of a 6136N pressing assembly during commissioning without swapping cylinders or adding external mechanical stops.
Product Changeover
Adjust the 70-80mm travel window on the fly to accommodate slightly different product sizes on a packaging line.
Assembly Station Setup
Fine-tune the retract stroke on heavy automated jigs to ensure precise alignment before final locking.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-10 the Right Cylinder?
Choose this 125mm bore cylinder when your application requires substantial thrust—stepping down to the 100mm bore yields 3927N push force at 0.5MPa, which may be insufficient for heavy loads. The 10mm adjustable window is ideal for fine-tuning the retract end position during machine setup or product changeover without adding external stops or swapping out a fixed-stroke SAI cylinder. When replacing an ISO 15552 cylinder, match the 125mm bore, 80mm stroke, 10mm adjustment, PT G1/2 port, and desired mounting interface. Because the stroke is under 300mm, side-load concerns are minimal, though the 32mm rod handles standard loads well.
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 SAIJ125X80-10 FAQ
At 0.5MPa, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster acts as a mechanical stop that trims the nominal 80mm stroke back by up to 10mm, giving a usable 70-80mm travel window. It only sets the end position and does not lock the load without live air pressure.
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