Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10
The AirTAC SAIJ125X65-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning. It provides a usable travel window of 55 to 65 mm by trimming the nominal 65 mm stroke up to 10 mm without adding external stops. Delivering 6136 N of push force at 0.5 MPa, it handles heavy dynamic loads with a 32 mm carbon steel rod and M27x2 thread.
This model features PT tapered port threads and operates at speeds of 30-500 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 65 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 SAIJ125X65-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×65 | 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 SAIJ125X65-10 Is Used
Press Tonnage Setup
Dial in the exact 55-65 mm travel window during press commissioning to accommodate varying material thicknesses without physically swapping the actuator.
Assembly Line Changeover
Quickly adjust the retract end-stop for new product sizes on a high-force assembly line, saving setup time and avoiding external mechanical stops.
Heavy Material Clamping
Leverage the 6136 N push force at 0.5 MPa to securely hold heavy workpieces, using the fine-tune adjustment to prevent over-travel and crushing.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10 the Right Cylinder?
Choose this 125 mm bore when a 100 mm cylinder (3927 N at 0.5 MPa) lacks the thrust for your heavy-duty clamping or lifting task. The adjustable stroke is ideal for product changeovers on a line, letting you dial in the exact 55-65 mm travel window on the fly rather than swapping to a fixed-stroke SAI cylinder. Remember that the rear adjuster acts as a travel stop, not a lock; the SAIJ does not hold loads without live air pressure, so consider SAIL or BSAI variants for true load-holding needs.
To match this ISO 15552 cylinder for a replacement, verify the 125 mm bore, 65 mm stroke, 10 mm adjustment range, PT G1/2 port, and the specific mounting accessory. The standard carbon steel rod is highly durable for general industrial use.
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 SAIJ125X65-10 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 1251 kgf.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective travel from the nominal 65 mm down to 55 mm. This creates a 55-65 mm usable window for precise end-position tuning at commissioning.
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