Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-30S 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 SAIJ125X160-30S
The AirTAC SAIJ125X160-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 130-160 mm usable travel window by trimming up to 30 mm from the 160 mm nominal stroke. Delivering 6136 N pull force at 0.5 MPa, it handles heavy loads while allowing precise end-position tuning during commissioning without swapping out the unit.
This variant features a standard carbon steel piston rod and includes a magnet for position sensing with CMSE reed or DMSE electronic switches. It uses a PT tapered G1/2 port and relies on variable air cushions at both ends to decelerate the moving mass. The rear adjuster acts strictly as a travel stop, meaning it cannot hold a load without continuous live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-30S |
|---|---|
| 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 SAIJ125X160-30S
| 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 SAIJ125X160-30S Is Used
Product Changeovers
Dial in the 130-160 mm retract distance to instantly adapt a heavy-duty press to varying material thicknesses without changing the cylinder.
Commissioning Calibration
Fine-tune the exact end-of-stroke position during machine setup to achieve perfect alignment, avoiding the need for external mechanical stops.
Heavy Forming Stops
Leverage the 6136 N pull force for substantial clamping tasks while relying on the rear screw to set the precise travel limit.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-30S the Right Cylinder?
Select this 125 mm bore when an application requires substantial thrust—such as 8590 N push at 0.7 MPa—and a variable end-stop for product changeovers. If your force requirements are lower, stepping down to a 100 mm bore yields 3681 N pull at 0.5 MPa, which might better suit lighter fixtures. The SAIJ125X160-30-S is chosen over a fixed-stroke SAI cylinder when you need on-the-fly fine-tuning of the retract position to accommodate different material thicknesses.
Because the nominal stroke is 160 mm, an external guide is recommended to manage side loads, as the 32 mm rod diameter can only support so much cantilevered weight. For applications requiring true load-holding without live air, this cylinder will not suffice; consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead. This model is dimensionally interchangeable per ISO 15552 and uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ125X160-30S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm, creating a usable travel window of 130-160 mm. This lets you set the exact retract position at commissioning without adding external stops.
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
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