Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-100S 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 SAIJ125AX350-100S
The AirTAC SAIJ125X350-100-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 250-350 mm usable travel window by allowing you to dial back the 350 mm nominal stroke by up to 100 mm. This bore delivers 6136 N push and 5734 N pull force at 0.5 MPa, scaling to 11045 N push at 0.9 MPa.
Equipped with a SUS420J2 stainless steel rod and a PT tapered port, it includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel integrates sensor grooves on both sides, and the adjustable stopper enables fine end-position tuning at commissioning without adding external stops.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-100S |
|---|---|
| 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 SAIJ125AX350-100S
| 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 SAIJ125AX350-100S Is Used
Variable End Stops
Dial in the 250-350 mm travel window during machine commissioning to accommodate varying product lengths without mechanical rework.
Line Changeover
Rapidly adjust the retract end-position for new product sizes on a conveyor line using the rear stopper instead of replacing the entire actuator.
Setup Calibration
Fine-tune the final end position during initial equipment setup to achieve precise stopping accuracy for heavy 125 mm bore loads.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-100S the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore (offering 3927 N push at 0.5 MPa) lacks sufficient thrust, but a 160 mm bore (10053 N push) is oversized. The 100 mm adjustment range is ideal for product-size changeovers on a line, letting you set variable end stops without swapping the cylinder.
For a 350 mm stroke, the 32 mm rod and M27x2 thread handle substantial side loads, but an external guide is recommended for unsupported loads. The rear adjuster and air cushions only decelerate the travel end; they do not hold the load without live air. For load-holding without pressure, use an external rod lock, pilot-operated check valve, or AirTAC SAIL and BSAI cylinders. This SAIJ model is dimensionally interchangeable per ISO 15552 with a PT port, -S magnet, and mounting options Basic, FA, LB, TC, FTC, TCM1, TCM2.
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 SAIJ125AX350-100S FAQ
At 0.5 MPa operating pressure, it provides 6136 N push force and 5734 N pull force. At 0.9 MPa, the push force increases to 11045 N.
The rear adjuster acts as a stop that lets you shorten the 350 mm nominal stroke by up to 100 mm, creating a 250-350 mm usable travel window. It sets the end position but does not lock the load without live air.
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 SAIJ125AX350-100S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.