Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75 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 SAIJ125X160-75
The AirTAC SAIJ125X160-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 160 mm stroke that can be dialed back by up to 75 mm, yielding a highly flexible 85-160 mm usable travel window. Operating at 0.5 MPa, it generates 6136 N of push force and 5734 N of pull force, making it well-suited for heavy-duty positioning tasks.
This model features a robust 32 mm carbon steel rod and a PT tapered G1/2 port. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75 |
|---|---|
| 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 SAIJ125X160-75
| 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 SAIJ125X160-75 Is Used
Variable End-Stop Positioning
Ideal for heavy-duty actuators requiring precise retract positioning. The 75 mm adjustment window allows operators to dial in the exact end-stop for varying material thicknesses without changing cylinder hardware.
Product Size Changeover
Perfect for packaging or material handling lines processing multiple carton sizes. The rear screw lets you quickly shorten the stroke from 160 mm down to 85 mm to accommodate different product lengths on the fly.
Heavy-Duty Machine Setup
Provides 6136 N of thrust at 0.5 MPa for clamping or pressing heavy components. The fine-tuning capability at commissioning prevents over-travel damage during initial machine run-in.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-75 the Right Cylinder?
Select this 125 mm bore cylinder when your application requires substantial thrust—stepping up from a 100 mm bore yields a significant force increase from 3927 N to 6136 N at 0.5 MPa. The 75 mm adjustment range is ideal for product changeovers on automated lines, allowing operators to fine-tune the retract end position without adding external stops or replacing the cylinder with a fixed-stroke SAI unit.
Because the 160 mm stroke is below the 300 mm threshold, external side-load guides are less critical here than on longer strokes, though the substantial 32 mm rod thread helps manage inherent bending loads. If your process requires the load to be held mechanically without continuous air pressure, this standard cylinder is insufficient; consider an AirTAC SAIL or BSAI locking cylinder instead. For an exact ISO 15552 replacement match, verify the 160 mm stroke, 75 mm adjust, PT port, and required mounting bracket from the Basic, FA, LB, TC, FTC, TCM1, or TCM2 options.
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 SAIJ125X160-75 FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 75 mm. This creates a usable travel window between 85 mm and 160 mm, which can be fine-tuned during commissioning without swapping the cylinder.
Operating at 0.5 MPa, this 125 mm bore double-acting cylinder provides a push force of 6136 N and a pull force of 5734 N. At the maximum operating pressure of 1.0 MPa, it delivers a maximum push force of 1251 kgf.
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