Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-20S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-20S 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 SAIJ125X160-20S
The AirTAC SAIJ125X160-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers robust performance with a 6136N pull force at 0.5 MPa and operates at speeds between 30-500 mm/s. The integrated -S magnet enables precise position sensing with AirTAC CMSE reed and DMSE solid-state switches fitted into the dual-side sensor grooves.
This specific SKU provides a 140-160 mm usable travel window, allowing you to dial back the nominal 160 mm stroke by up to 20 mm. The rear adjustment screw acts purely as a travel stop for end-position tuning during commissioning; it does not hold the load without live air pressure. For true load-holding requirements without continuous air, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-20S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-20S |
|---|---|
| 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 SAIJ125X160-20S
| 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 SAIJ125X160-20S Is Used
Product Changeover Tuning
Dial in the 140-160 mm travel window during machine setup to accommodate slightly different product lengths without physically swapping out the pneumatic cylinder.
Heavy Assembly End-Stop
Leverage the 6136N pull force to securely seat heavy components, using the rear adjuster to fine-tune the final clamping position precisely.
Sensor-Verified Positioning
Utilize the integrated -S magnet with DMSE electronic sensors to confirm end-of-stroke arrival at the adjusted 140 mm minimum retraction point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X160-20S the Right Cylinder?
Select this 125 mm bore cylinder when your application requires substantial force, such as 6136N pull at 0.5 MPa, combined with variable end-stop positioning. The adjustable 140-160 mm window is ideal for product changeovers on a line, saving the effort of swapping cylinders or adding external stops. If your setup demands less force, stepping down to an 80 mm bore yields 2268N pull, whereas stepping up to a 160 mm bore provides 9425N pull.
As a dimensionally interchangeable ISO 15552 profile cylinder, this model features a PT tapered port, carbon steel rod, and the -S magnet option. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 160 mm stroke is relatively short, side-load risks are minimal, but an external guide is always recommended for heavy lateral loads. Note that the rear adjuster is a stop, not a lock.
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 SAIJ125X160-20S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, creating a usable travel window of 140-160 mm. This stopper fine-tunes the retract end position during commissioning but does not lock the load without live air pressure.
At 0.5 MPa operating pressure, it provides 6136N of pull force and 8590N of push force. The maximum thrust is 1251 kgf at 1.0 MPa.
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