Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10S
The AirTAC SAIJ125X125-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial in the retract end-position during commissioning. It provides a usable travel window of 115-125mm, letting you trim up to 10mm off the nominal stroke without adding external stops. Delivering 6136N of pull force at 0.5 MPa, it is built for heavy-duty positioning.
This variant features a SUS420J2 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the standard variable air cushions at both ends absorb kinetic energy. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 SAIJ125AX125-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 SAIJ125AX125-10S Is Used
Machine Changeover
Dial in the 115-125mm travel window during product size changeovers to set precise retract positions without machining new hard stops.
Heavy Press Positioning
Leverage the 6136N pull force to seat heavy components, using the 10mm adjustment to fine-tune the final clamping position.
Assembly Line Tuning
Perfect end-stroke alignment on automated lines, using the rear screw to compensate for mechanical wear over time.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10S the Right Cylinder?
Select this 125mm bore cylinder when your application requires 6136N of pull force at 0.5 MPa and on-the-fly end-position tuning. If you need less force, stepping down to an 80mm bore yields 2268N of pull, whereas moving up to a 160mm bore provides 9425N. Choose this adjustable-stroke SAIJ model over a fixed SAI when you need a variable end-stop for product changeovers rather than swapping out the entire cylinder.
For a true ISO 15552 replacement, match the 125mm bore, 125mm stroke, 10mm adjustment, PT tapered port threads, and the -S magnet. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. If your machine requires true load-holding without continuous air pressure, this cylinder's stopper is insufficient; you should specify an SAIL or BSAI series instead.
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 SAIJ125AX125-10S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of pull force and 8590N of push force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjuster allows you to shorten the effective stroke by up to 10mm, creating a usable travel window of 115-125mm. This stopper only sets the travel end and does not lock or hold the load without continuous air pressure.
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 SAIJ125AX125-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.