Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-10 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 SAIJ125AX80-10
The AirTAC SAIJ125X80-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 10 mm. This creates a 70-80 mm usable stroke window, letting you fine-tune the retract end position at commissioning without swapping out the cylinder or adding external stops. It delivers robust force, generating 6136 N of pull force at 0.5 MPa.
This specific SKU is configured with a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. While you can mount CMSE or DMSE sensors, this unit lacks the -S magnet option. The SAIJ mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-10 |
|---|---|
| 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 SAIJ125AX80-10
| 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 SAIJ125AX80-10 Is Used
Machine Changeover
Dial in the 70-80 mm retract window during product size changes without replacing the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the exact end-of-stroke position during commissioning to perfect the timing of a heavy clamping or lifting motion.
Heavy Assembly Press
Leverage the 6136 N pull force at 0.5 MPa to secure heavy components, using the rear screw to set the precise lower travel limit.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-10 the Right Cylinder?
Choose this 125 mm bore when your application requires substantial force, stepping up from the 100 mm bore that provides 3681 N of pull force at 0.5 MPa. The adjustable stroke is perfect for product changeovers on a line where the exact retract distance needs slight variation. If you need to hold a load securely without live air pressure, note that the rear adjuster acts only as a travel stop, not a lock; you would need to look at the SAIL or BSAI series for true load-holding.
To match this ISO 15552 interchangeable cylinder, verify your bore of 125, stroke of 80, 10 mm adjustment, PT port, and required mounting accessory. The standard speed range for this large bore is 30-500 mm/s. Because the stroke is under 300 mm, side-load concerns are minimal, but always ensure the load is guided for smooth operation.
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 SAIJ125AX80-10 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N of push force. It can reach a maximum push force of 11045 N at 0.9 MPa.
The SAIJ125X80-10 has an external adjusting screw at the rear that acts as a stopper. It lets you shorten the nominal 80 mm stroke by up to 10 mm, providing an adjustable travel window of 70-80 mm. It is a travel stop, not a lock, so it will not hold the load without live air pressure.
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