Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-100
The AirTAC SAIJ125X165-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 65 to 165 mm window. Delivering 6136 N of push force at 0.5 MPa, it handles substantial workloads while allowing precise end-position calibration during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback integration.
This model uses a 32 mm carbon steel rod with an M27x2 thread, providing excellent rigidity against side loads. The rear adjuster acts purely as a mechanical stop to set the retract distance and is not a locking device. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on fixed-stroke variants.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAIJ125X165-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAIJ125X165-100 Is Used
Product Changeover Lines
Quickly adapt to varying package sizes by dialing the stroke back up to 100 mm, eliminating the need to physically swap out actuators during format changes.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to achieve precise mechanical spacing without adding external stopper blocks to the fixture.
Heavy-Duty Forming
Leverage the 6136 N push force at 0.5 MPa for high-load pressing operations while maintaining the ability to adjust the travel window for different material thicknesses.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-100 the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore's 628 N pull at 0.5 MPa is insufficient for your heavy-duty application. The 100 mm adjustment range is ideal for production lines running mixed product sizes, allowing you to dial in the exact end-stop without physically swapping the cylinder. Because the SAIJ rear adjuster is a travel stop rather than a brake, it cannot hold the load without live air pressure. If your application requires true load-holding in the event of air loss, consider the SAIL pneumatic lock or BSAI clamp-lock series instead.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 165 mm stroke, up to 100 mm adjustment, PT G1/2 port, and your required mounting interface. Since this model lacks the -S magnet suffix, it cannot host AirTAC CMSE or DMSE sensors without modification.
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 SAIJ125X165-100 FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. It can deliver up to 1251 kgf at its maximum 1.0 MPa pressure rating.
The rear mechanical screw acts as a stopper, allowing you to shorten the 165 mm nominal stroke by up to 100 mm. This creates a usable travel window of 65 to 165 mm. The adjuster only sets the end position and does not lock the load without air pressure.
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