Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-10
The AirTAC SAIJ125X260-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 6136N push force at 0.5 MPa. It features a 32mm carbon steel piston rod with an M27x2 thread and PT tapered ports. By turning the rear screw, you can trim the effective travel within a precise 250-260mm window, which is ideal for dialing in exact end positions during commissioning without adding external stops.
This bore size operates at a standard speed range of 30-500mm/s and includes variable air cushions at both ends to manage kinetic energy. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing you to add CMSE reed or DMSE electronic switches for position detection. Mounting options include the standard Basic, FA, LB, TC, FTC, TCM1, and TCM2 sets, strictly omitting FB, CA, CB, and CR configurations.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 260 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 SAIJ125X260-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×260 | 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 SAIJ125X260-10 Is Used
Machine Setup & Changeover
Fine-tune the 250-260mm travel window during product line changeovers to accommodate minor dimensional variances without swapping out the entire actuator.
Heavy Material Handling
Leverage the 6136N push force at 0.5 MPa to move heavy workpieces, using the rear stop to precisely set the retraction endpoint for indexing operations.
Press and Forming Stops
Establish a rigid, repeatable end-stop for pressing or forming tasks where a fixed stroke might bottom out prematurely, ensuring perfect contact alignment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-10 the Right Cylinder?
Select this 125mm bore when a 100mm cylinder (offering 3927N push at 0.5 MPa) lacks the necessary thrust, but an 80mm bore is even less suitable at 2513N. The 10mm adjustment range is chosen over a fixed-stroke SAI cylinder when you need micro-adjustments to the retract end-position during machine setup or product changeover. Because the stroke is 260mm, ensure adequate external guiding to prevent excessive side-loading on the M27x2 rod.
For an exact ISO 15552 replacement match, verify the 125mm bore, 260mm nominal stroke, PT port thread, and your required mounting bracket. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; if your application requires true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ125X260-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 8590N.
The rear adjuster screw allows you to shorten the nominal 260mm stroke by up to 10mm, creating a usable travel window of 250-260mm. This stopper fine-tunes the end position at commissioning but does not lock the load without continuous air pressure.
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