Airtac SAIJ125 Adjustable Cylinder SAIJ125X240-10
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X240-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 240mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ125 mm
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X240-10
The AirTAC SAIJ125X240-10 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 yields a usable 230-240 mm travel window, letting you dial in the exact end position during commissioning without adding external stops. Built with an extruded aluminum barrel, it is dimensionally interchangeable with ISO 15552 cylinders.
The PT tapered porting and M27x2 rod thread are set by the bore size, while the integrated variable air cushions at both ends manage deceleration across the 30-500 mm/s speed range.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X240-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X240-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 240 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 | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X240-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×240 | 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 SAIJ125X240-10 Is Used
Machine Changeover
Fine-tune the 230-240 mm retract end-position during product size changeovers without physically replacing the cylinder or bolting on external stoppers.
Assembly Line Indexing
Index large components on an assembly line with the 125 mm bore's robust thrust, using the 10 mm adjustment to dial in the exact stopping point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X240-10 the Right Cylinder?
The adjustable stroke is ideal for product-size changeovers on a line, where a 10 mm fine-tune window at the retract end saves time over swapping a fixed-stroke SAI cylinder.
For any mounting requirement, SAIJ supports a reduced set of ISO 15552 attachments: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because this is a plain cylinder, the rear adjuster acts only as a travel stop and does not hold the load without live air; for true position holding, consider the SAIL or BSAI series. At a 240 mm stroke, side loads are moderate, but ensure external guiding if the load is unsupported.
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 SAIJ125X240-10 FAQ
At 0.9 MPa, the push force increases to 11045 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 240 mm nominal stroke by up to 10 mm, providing a usable travel window of 230-240 mm for fine-tuning the end position at commissioning.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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