Airtac SAIJ125 Adjustable Cylinder SAIJ125X185-10S
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X185-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 185mm 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
- Stroke185 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 SAIJ125X185-10S
The AirTAC SAIJ125X185-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 175-185 mm, letting you dial in the exact end position during commissioning without adding external stops.
This -S variant includes a magnet for position sensing via AirTAC CMSE reed and DMSE electronic switches, which mount directly into the dual-side sensor grooves on the extruded aluminum barrel. The robust 32 mm carbon steel rod and M27x2 thread handle significant side loads, while the PT tapered port ensures a tight pneumatic seal.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X185-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X185-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 185 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 SAIJ125X185-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×185 | 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 SAIJ125X185-10S Is Used
Product Changeovers
Dial in the 175-185 mm travel window during line format changes to accommodate slightly different product sizes without physically swapping the cylinder.
Machine Setup
Fine-tune the retract end position during initial commissioning using the rear adjuster, avoiding the need to machine custom external stoppers.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X185-10S the Right Cylinder?
Choose this 125 mm bore when your application requires heavy thrust—stepping down to a 100 mm bore drops the 0.5 MPa push force to 3927 N, whereas this model provides 6136 N. The 10 mm adjustable range is ideal for fine-tuning product changeovers on a line, whereas a fixed-stroke SAI cylinder locks you into a single 185 mm end position. For holding loads safely without live air pressure, note that this rear adjuster acts only as a travel stop; you must integrate an external rod lock or select a BSAI clamp-lock cylinder instead.
Because the 185 mm stroke is under the 300 mm side-load threshold, standard mounting is less critical, but always support long unsupported loads. This SKU uses PT tapered ports and the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits FB, CA, CB, and CR mounts, making it dimensionally interchangeable with ISO 15552 cylinders without needing a tie-rod architecture.
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 SAIJ125X185-10S FAQ
It can reach a maximum thrust of 1251 kgf at 1.0 MPa.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective travel from 185 mm down to 175 mm. This creates a 10 mm tuning window for precise end-position calibration without changing the cylinder itself.
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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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