Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-20S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 125mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ160 mm
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-20S
The AirTAC SAIJ160X125-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 14074N of push force at 0.7 MPa. Its 125 mm nominal stroke can be precisely dialed back by up to 20 mm, creating a 105-125 mm usable travel window. This built-in adjustability allows operators to fine-tune end positions during commissioning or product changeovers without adding external stops.
This variant includes a magnet for CMSE reed and DMSE electronic sensors, utilizing the standard carbon steel rod and PT tapered port. The robust 40 mm rod and M36x2 thread handle significant side loads, while the extruded aluminum barrel features sensor grooves on both sides. The rear adjuster acts strictly as a travel stop for deceleration, not a load-holding lock.
Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-20S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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, 50 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×125 | 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 SAIJ160 Adjustable Cylinder SAIJ160X125-20S Is Used
Heavy Press Tuning
Dial in the exact 105-125 mm end position for heavy pressing tasks during machine setup without swapping cylinders.
Product Changeover
Adjust the rear stopper quickly on the fly to accommodate different product sizes on the same production line.
Variable End Stops
Achieve precise deceleration and end-position control for large actuators in automated assembly lines.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-20S the Right Cylinder?
Choose this 160 mm bore when an application requires heavy thrust between the 100 mm bore (5497N push at 0.7 MPa) and the 200 mm bore (21991N push). The adjustable 105-125 mm window is ideal for machinery requiring variable end-stops on the fly, offering more setup flexibility than a fixed-stroke SAI cylinder. Because the stroke is 125 mm, external side-load guides are recommended to support the rod.
For a true ISO 15552 replacement match, verify the 160 mm bore, 125 mm stroke, 20 mm adjustment, PT port, and the -S magnet option. If your process demands load holding without live air pressure, select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead, as the SAIJ adjuster cannot secure a load.
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 SAIJ160 Adjustable Cylinder SAIJ160X125-20S FAQ
At an operating pressure of 0.7 MPa, this 160 mm bore cylinder provides a push force of 14074N and a pull force of 9425N. It reaches a maximum push force of 18095N at 0.9 MPa.
The rear adjuster acts as an external stop that shortens the effective travel. For this 125 mm stroke model, you can trim the stroke by up to 20 mm, providing a usable travel window of 105-125 mm for fine-tuning at commissioning.
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