Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-100S
The AirTAC SAIJ125X175-100-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 6136N of push force at 0.5 MPa and provides a usable travel window of 75 to 175 mm, letting you dial back the nominal 175 mm stroke by up to 100 mm during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This specific SKU features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and pairs with a PT tapered port thread. The rear adjuster acts purely as a mechanical stop to set the retract end position; it does not lock or hold the load without continuous air pressure. For load-holding requirements without live pressure, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAIJ125AX175-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SAIJ125AX175-100S Is Used
Product Changeover
Quickly modify the retract end-stop by up to 100 mm to accommodate different package lengths on a single machine without changing hardware.
Machine Setup
Fine-tune the final end position during commissioning to achieve precise pressing or clamping forces without machining external spacers.
Variable End Stops
Adjust the effective stroke within the 75 to 175 mm window to dial in the exact travel needed for varying material thicknesses.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-100S the Right Cylinder?
Choose this 125 mm bore cylinder when an application requires substantial thrust—6136N at 0.5 MPa or 11045N at 0.9 MPa. If your process demands less force, stepping down to an 80 mm bore yields 2513N at 0.5 MPa, whereas moving up to a 160 mm bore provides 10053N. The 100 mm adjustment range is particularly useful on packaging lines or equipment that processes varying product sizes, allowing rapid end-stop changes without swapping the cylinder or adding external stops.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 175 mm stroke, PT port thread, and the -S magnet option for AirTAC CMSE (reed) and DMSE (solid-state) sensors. SAIJ supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 175 mm, ensure adequate external guidance if the load is unsupported, as the 32 mm rod diameter handles side loads but cannot substitute for a dedicated guide.
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 SAIJ125AX175-100S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.9 MPa, the push force increases to 11045N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from its nominal 175 mm down to 75 mm. It sets the travel end position but does not lock the load without live air pressure.
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