Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10S
The AirTAC SAIJ125X350-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 340-350 mm. Delivering 6136 N of push force and 5734 N of pull force at 0.5 MPa, it handles heavy-duty positioning tasks. The barrel features dual sensor grooves compatible with CMSE reed and DMSE electronic switches, and the rod is constructed from SUS420J2 stainless steel for enhanced corrosion resistance.
This model utilizes PT tapered ports sized at G1/2 and achieves a maximum standard stroke of 1500 mm. The rear adjustment mechanism acts purely as a travel stop for fine-tuning end positions during commissioning; it is not a locking device and requires live air to maintain load holding. For applications needing secure position holding without continuous air pressure, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 350 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 SAIJ125AX350-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×350 | 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 SAIJ125AX350-10S Is Used
Machine Changeover
Dial in the exact 340-350 mm end-stop during product size transitions on a packaging line without swapping out the entire cylinder.
Heavy Pressing
Leverage 6136 N of thrust at 0.5 MPa for heavy assembly presses while fine-tuning the final contact position at commissioning.
Variable End Stops
Adjust the retract stroke by up to 10 mm to accommodate varying package sizes on a conveyor sorting system.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10S the Right Cylinder?
Choose this 125 mm bore cylinder when an application requires substantial thrust (6136 N at 0.5 MPa) alongside precise end-position tuning without external stops. If your force requirements are lower, stepping down to a 100 mm bore yields 3927 N of push force, whereas upgrading to a 160 mm bore provides 10053 N for heavier loads. The adjustable 340-350 mm window is ideal for product changeovers on packaging lines. Because the 350 mm stroke is substantial, an external guide is recommended to manage side loads and prevent rod wear.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 350 mm nominal stroke, 10 mm adjustment range, PT G1/2 ports, and the -S magnet requirement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that this SAIJ variant omits the FB, CA, CB, and CR mounts. The standard speed range for this bore is 30-500 mm/s.
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 SAIJ125AX350-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 1251 kgf.
The rear adjuster allows you to shorten the effective stroke by up to 10 mm, creating a usable travel window of 340-350 mm. This stopper fine-tunes the end position but does not lock the load without live 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 SAIJ125AX350-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.