Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-100
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X145-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 145mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ125 mm
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-100
The AirTAC SAIJ125X145-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a nominal 145 mm stroke and a 100 mm adjustment range, it provides a highly flexible usable travel window of 45 to 145 mm. The carbon steel piston rod uses an M27x2 thread, and the barrel features sensor grooves on both sides for flexible mounting.
This adjustable design eliminates the need to swap cylinders or add external stops during product changeovers. The rear screw acts purely as a travel stop to set the end position, meaning it will not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 145 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 | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×145 | 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 SAIJ125X145-100 Is Used
Press Tooling Changeover
Dial in the exact 45 to 145 mm travel window during tooling swaps without physically replacing the actuator or reengineering external hard stops.
Variable Package Diverters
Adjust the retract end-position on the fly to handle varying carton lengths on a single conveyor line, ensuring precise routing.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X145-100 the Right Cylinder?
Select this 125 mm bore cylinder when an application requires substantial thrust (6136 N at 0.5 MPa) alongside variable end-of-stroke positioning. The 100 mm adjustment range is ideal for packaging lines or presses that frequently process different sized parts. Since this model has a 145 mm stroke, the M27x2 rod is well-supported, but any future upgrades to longer strokes (300 mm or more) would require an external guide to prevent side-load damage.
As a dimensionally interchangeable ISO 15552 cylinder, it replaces equivalent profiles using a PT tapered G1/2 port and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). It operates at 30-500 mm/s and lacks a standard magnet; adding an -S magnet enables CMSE reed or DMSE electronic 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 SAIJ125X145-100 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster screw allows you to shorten the effective stroke from its nominal 145 mm down to 45 mm, creating a 45-145 mm travel window. It functions as a mechanical stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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