Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10S 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 SAIJ125X65-10S
The AirTAC SAIJ125X65-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 55-65 mm for precise end-position tuning. Delivering 6136 N of push force and 5734 N of pull force at 0.5 MPa, it handles heavy actuation tasks with ease. The extruded aluminum barrel features sensor grooves on both sides to house CMSE reed and DMSE electronic switches.
This model includes a standard carbon steel piston rod and PT tapered port threads. The rear adjustment screw acts purely as a mechanical stop to trim the stroke without swapping the cylinder, while the variable air cushions at both ends manage end-of-travel deceleration.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10S |
|---|---|
| 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 SAIJ125X65-10S
| 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 SAIJ125X65-10S Is Used
Press Tonnage Calibration
Dial in the exact 55-65 mm travel window during machine setup to calibrate pressing force without adding external mechanical stops.
Product Changeover Stops
Adjust the end position on the fly when switching package sizes on a packaging line, using the rear screw to trim the stroke by up to 10 mm.
Heavy Material Handling
Leverage the 6136 N push force at 0.5 MPa to move heavy pallets or materials, relying on the 32 mm rod to manage high side loads.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X65-10S the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder's 2513 N push force at 0.5 MPa is insufficient, but a 160 mm bore is excessive for the machine envelope. The 10 mm rear adjuster is ideal for fine-tuning the end stop during commissioning or product changeover, avoiding the need to bolt on external stops or replace a fixed-stroke SAI cylinder. Remember that the rear adjuster and air cushions only set the travel end; they do not hold the load without live air. For fail-safe load holding, select the SAIL or BSAI series instead. This SAIJ variant supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. To match this ISO 15552 interchangeable cylinder, specify bore 125, stroke 65, 10 mm adjustment, PT port, and the -S magnet.
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 SAIJ125X65-10S FAQ
The rear adjuster screw lets you shorten the nominal 65 mm stroke by up to 10 mm, creating a usable travel window of 55-65 mm. It acts as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 1251 kgf.
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