Airtac SAIJ125 Adjustable Cylinder SAIJ125AX20-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX20-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 20mm 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
- Stroke20 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX20-10S
The AirTAC SAIJ125X20-10-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 PT tapered port thread, an SUS420J2 stainless steel rod (code A), and an integrated magnet for position sensing. With a nominal 20mm stroke and a 10mm adjustment range, it provides a highly versatile 10-20mm usable travel window for fine-tuning end positions at commissioning.
This adjustable stopper allows you to dial in the exact retract distance without swapping the cylinder or adding external stops. The 32mm rod and M27x2 thread provide robust side-load resistance, while the extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX20-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX20-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 20 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 SAIJ125AX20-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×20 | 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 SAIJ125AX20-10S Is Used
Precision Clamping Setup
Dial in the exact 10-20mm clamping depth during machine commissioning to accommodate varying material thicknesses without external stops.
Product Changeover
Quickly adjust the retract end-position by up to 10mm on a packaging line to handle different product sizes efficiently.
Short-Stroke Forming
Leverage the 6136N push force at 0.5 MPa for high-thrust pressing operations where the final end-stop must be finely tuned.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX20-10S the Right Cylinder?
Choose this 125mm bore when an 80mm cylinder (providing 2513N push at 0.5 MPa) lacks the necessary thrust, but a 160mm bore (10053N) would be excessive. The 10-20mm adjustable travel window is perfect for applications requiring precise short-stroke positioning, replacing the need for fixed-stroke SAI cylinders when exact end-stops must be tuned on the machine. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the rear adjuster acts only as a travel stop and the air cushion provides deceleration, neither will hold a load without live air pressure. For load-holding requirements without continuous air, consider an external rod lock, a pilot-operated check valve, or related AirTAC types like the SAIL or BSAI. The -S magnet enables accurate end-position feedback via CMSE or DMSE sensors.
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 SAIJ125AX20-10S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster screw allows you to trim the effective travel back by up to 10mm. With the 20mm nominal stroke, this creates a usable 10-20mm travel window for fine-tuning the retract end-position without changing the cylinder.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX20-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.