Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-100
The AirTAC SAIJ125X290-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. It features a 32mm SUS420J2 stainless steel rod and PT tapered ports. By turning the rear stopper screw, you can trim the effective travel anywhere within a 190-290mm window, providing exact end-position tuning without swapping out the entire actuator.
This adjustable travel capability is ideal for product-size changeovers on a packaging line. Because it is an extruded aluminum profile cylinder, it carries sensor grooves on both sides. However, this specific SKU lacks a magnet, so position sensing requires external reed or electronic switches unless a -S variant is specified.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 290 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 SAIJ125AX290-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×290 | 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 SAIJ125AX290-100 Is Used
Variable End Stops
Dial in the exact 190-290mm retraction point during machine commissioning to accommodate different material thicknesses without mechanical rebuilds.
Product-Size Changeovers
Quickly adjust the stroke length by up to 100mm when switching the manufacturing line to a new product format, minimizing downtime.
Heavy Clamping Setup
Leverage the 6136N push force at 0.5MPa to secure heavy workpieces, using the rear screw to fine-tune the clamping depth precisely.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-100 the Right Cylinder?
Select this 125mm bore actuator when an application demands heavy thrust combined with variable end-stop positioning. If 6136N at 0.5MPa is excessive, stepping down to an 80mm bore yields 2513N of push force. Conversely, if you need more clamping power, a 160mm bore provides 10053N. The generous 100mm adjustment window allows precise commissioning tuning without adding external stops.
For an exact ISO 15552 replacement, match the 125mm bore, 290mm nominal stroke, 100mm adjustment range, PT port thread, and SUS420J2 rod material. Since the stroke is 290mm, ensure adequate external guidance to prevent excessive side-loading on the rod. Note that the rear adjuster acts only as a travel stop; it does not lock the load. For true load-holding without live air pressure, consider the AirTAC SAIL or BSAI series.
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 SAIJ125AX290-100 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.9MPa, the push force increases to 11045N.
The rear stopper screw allows you to shorten the 290mm nominal stroke by up to 100mm, creating a usable travel window of 190-290mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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