Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-40
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 160mm 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
- Stroke160 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-40
The AirTAC SAIJ125X160-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 6136N of push force and 5734N of pull force at 0.5 MPa, making it a robust choice for heavy-duty actuation. The integrated adjuster allows you to fine-tune the effective travel window down from 160 mm to a minimum of 120 mm, providing a 40 mm variable end-stop range without needing external stops.
This 125 mm bore actuator uses a G1/2 port and a robust 32 mm carbon steel rod with an M27x2 thread, handling speeds of 30-500 mm/s. It features adjustable air cushions at both ends to manage kinetic energy. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true position holding, consider the SAIL or BSAI series. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-40 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 SAIJ125X160-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×160 | 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 SAIJ125X160-40 Is Used
Heavy-Duty Machine Setup
Dial in the exact 120-160 mm end-stop during machine commissioning to accommodate varying workpiece sizes without physically swapping the actuator.
Product Changeover Stops
Adjust the rear stopper on the fly when a production line shifts to a different package dimension, saving downtime on external stop block modifications.
Variable End-Position Actuation
Leverage the 6136N push force at 0.5 MPa to move heavy pallets, using the 40 mm adjustment window to fine-tune the final resting position precisely.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-40 the Right Cylinder?
Select this 125 mm bore model when your application requires substantial thrust—such as 6136N at 0.5 MPa—and the ability to dial in the exact end position during commissioning. If your force requirements are lower, stepping down to a 100 mm bore yields 3927N of push force. Choose the adjustable SAIJ over a fixed-stroke SAI when you need flexibility for product size changes on a line, allowing a 120-160 mm travel window without swapping the cylinder.
For ISO 15552 interchangeability, match the 125 mm bore, 160 mm stroke, G1/2 port (PT tapered thread type), and the selected mounting accessory. This model does not include a magnet for sensors; add the -S option if you require CMSE reed or DMSE electronic solid-state position detection. Because the stroke is 160 mm, ensure your external guide handles any side loads to protect the rod seals.
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 SAIJ125X160-40 FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the nominal 160 mm stroke by up to 40 mm, creating a usable travel window of 120-160 mm. It functions as a mechanical stop to set the end position and does not lock the load without live air pressure.
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