Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 230mm 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
- Stroke230 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-100
The AirTAC SAIJ125X230-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a substantial 6136N push force at 0.5MPa, making it well-suited for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed and DMSE electronic switches.
Equipped with a 100mm adjustment range, this model allows you to dial back the nominal 230mm stroke to any effective travel length down to 130mm. This built-in stopper mechanism enables precise end-position tuning during commissioning or product changeovers without adding external physical stops. The standard carbon steel rod and PT tapered port threads ensure robust, leak-free connections in demanding industrial environments.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 230 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 SAIJ125X230-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×230 | 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 SAIJ125X230-100 Is Used
Variable Product Changeover
Rapidly adjust the effective stroke from 130mm to 230mm to accommodate different package sizes on a packaging line without swapping out the entire cylinder assembly.
Heavy-Duty End Positioning
Leverage the 6136N push force at 0.5MPa to move heavy pallets or chassis components, using the rear stopper to dial in the exact resting position during machine setup.
Press and Staging Operations
Utilize the adjustable retract stop to set precise lower bounds for pressing or staging tasks, ensuring consistent mechanical contact without relying solely on the 40mm air cushion.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-100 the Right Cylinder?
Choose this 125mm bore when your application requires higher thrust than a 100mm cylinder (3927N at 0.5MPa) but less than the massive output of a 160mm bore (10053N at 0.5MPa). The 100mm adjustable window is ideal for machinery processing varying product sizes, allowing operators to reposition the end-of-stroke stop rapidly. Unlike fixed-stroke SAI cylinders, the SAIJ rear screw fine-tunes the retract position on the fly.
When replacing an ISO 15552 cylinder, match the 125mm bore, 230mm stroke, PT port thread, and desired mounting accessory. SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR options). Note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for true fail-safe load holding, consider the SAIL or BSAI series. The 32mm rod thread (M27x2) handles significant side loads, though external guidance is recommended for heavy off-center loads.
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 SAIJ125X230-100 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder generates a push force of 6136N and a pull force of 5734N. It can reach a maximum push force of 11045N at 0.9MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 230mm down to 130mm. It fine-tunes the end position at commissioning but does not lock the load without continuous air pressure.
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