Airtac SAIJ125 Adjustable Cylinder SAIJ125AX210-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX210-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 210mm 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
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX210-10S
The AirTAC SAIJ125X210-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a 210mm nominal stroke that can be fine-tuned down by up to 10mm, providing a precise 200-210mm usable travel window. The SUS420J2 stainless steel rod offers high corrosion resistance, while the integrated magnet (-S) supports position sensing.
This adjustable-stroke design allows you to dial in the retract end position during commissioning without swapping hardware. As an extruded aluminum profile cylinder, it includes sensor grooves on both sides for flexible switch mounting. It operates at speeds of 30-500mm/s and uses a PT G1/2 port.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX210-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX210-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 210 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 SAIJ125AX210-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×210 | 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 SAIJ125AX210-10S Is Used
Precision Position Tuning
Dial in the exact retract position within a 200-210mm window during machine commissioning to achieve perfect alignment without external stops.
Product Size Changeover
Quickly adjust the end-of-stroke stop by up to 10mm on packaging lines when switching between slightly different product dimensions.
Heavy Load Actuation
Leverage the 6136N push force at 0.5MPa to move heavy pallets or fixtures, using the fine adjustment to prevent hard mechanical crashes.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX210-10S the Right Cylinder?
Choose this 125mm bore when an 80mm cylinder (2513N push at 0.5MPa) lacks the thrust for heavy loads, but a 160mm bore (10053N) would be excessive. The 10mm rear adjuster is ideal for product changeovers requiring slight end-position shifts, unlike a fixed-stroke SAI cylinder. For strokes of 210mm or more, ensure external guides support the load to prevent excessive side-loading on the rod.
To match this ISO 15552 cylinder, specify a 125mm bore, 210mm stroke, 10mm adjustment, PT G1/2 port, and a magnet for CMSE or DMSE sensors. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the rear adjuster acts only as a travel stop; it cannot hold loads without live air, so consider SAIL or BSAI cylinders for locking requirements.
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 SAIJ125AX210-10S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach up to 11045N push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that shortens the 210mm nominal stroke by up to 10mm, creating a 200-210mm usable travel window. It sets the end position but does not lock the load without continuous air pressure.
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