Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75S 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 SAIJ125X160-75S
The AirTAC SAIJ125X160-75-S is a double-acting ISO 15552 profile cylinder with a rear-mounted stroke adjuster, delivering 6136 N of push force at 0.5 MPa. It features a built-in magnet for position sensing and a carbon steel rod. The rear stopper allows you to trim the 160 mm nominal travel back by up to 75 mm, creating a wide 85-160 mm usable window for precise end-position tuning.
This adjustable design eliminates the need to swap cylinders or bolt on external stops during product changeovers. The extruded aluminum barrel includes sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE solid-state switches. It uses a PT tapered port and offers variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75S |
|---|---|
| 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 SAIJ125X160-75S
| 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 SAIJ125X160-75S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 85-160 mm window during machine commissioning without changing hardware.
Product Size Changeover
Quickly adapt the cylinder stroke on packaging lines when switching between different carton or product lengths.
High-Force Pressing
Leverage 6136 N of thrust at 0.5 MPa for pressing operations while fine-tuning the bottoming position via the rear screw.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75S the Right Cylinder?
Choose this 125 mm bore when your application requires high thrust (6136 N at 0.5 MPa) and frequent travel adjustments. If you need less force, stepping down to the 100 mm bore yields 3927 N. The 75 mm adjustment range is ideal for machines processing varying product sizes, acting as a variable end-stop. Remember that the rear adjuster is a travel stop, not a lock; it will not hold the load without live air. For load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder.
To match this ISO 15552 interchangeable cylinder, specify a 125 mm bore, 160 mm stroke, 75 mm adjustment, PT port, and the -S magnet option. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 160 mm, side loads are minimal, but always ensure adequate guiding for unsupported loads.
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 SAIJ125X160-75S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. It can reach up to 11045 N push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 160 mm nominal stroke by up to 75 mm, providing an adjustable travel window of 85 to 160 mm. It decelerates the travel end but does not lock the load without live air pressure.
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