Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 270mm 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
- Stroke270 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40
The AirTAC SAIJ160X270-40 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical stopper, allowing you to dial back the nominal 270 mm stroke by up to 40 mm. This creates a precise 230-270 mm usable travel window, ideal for fine-tuning end positions during commissioning without swapping out hardware. It delivers substantial thrust, pushing 18095 N at 0.9 MPa.
Built for demanding environments, this specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and an extended M36x2 rod thread. As an extruded aluminum profile cylinder, it includes sensor grooves on both sides for CMSE or DMSE switches, though this unit is supplied without a magnet. The rear adjuster acts purely as a travel stop to set deceleration, meaning it will not hold the load without continuous live air pressure.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 270 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 SAIJ160BX270-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×270 | 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 SAIJ160BX270-40 Is Used
Heavy Press Tuning
Fine-tune the 230-270 mm travel window during machine commissioning to set exact pressing depths on heavy assemblies without machining new spacers.
Product Changeover
Rapidly adjust the rear stopper on a packaging line to accommodate different box sizes, using the 40 mm trim range to alter the extend position.
Robotic End Effectors
Utilize the SUS304 stainless rod and high 18095 N push force for robust material handling, adjusting the stroke to match varying workpiece dimensions.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40 the Right Cylinder?
Selecting this 160 mm bore cylinder makes sense when your application requires heavy force—such as the 14074 N generated at 0.7 MPa—combined with variable end-stop positioning. If you need less thrust, stepping down to a 100 mm bore yields 5497 N at the same pressure, but the SAIJ160X270-40 provides the robust M36x2 thread needed to handle greater side loads. Because the 270 mm stroke exceeds the 300 mm threshold, ensure you use an external guide to prevent excessive rod wear.
Choose the adjustable-stroke SAIJ over a fixed SAI when your machine setup requires product-size changeovers or exact end-position tuning without adding external stops. To match this ISO 15552 dimensionally interchangeable cylinder for a replacement, verify the 160 mm bore, 270 mm stroke, 40 mm adjustment, PT tapered ports, SUS304 rod, and the absence of a magnet. For load-holding without live air, integrate an external pilot-operated check valve or look to the SAIL or BSAI series.
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 SAIJ160BX270-40 FAQ
At 0.9 MPa operating pressure, this 160 mm bore cylinder generates a push force of 18095 N and a pull force of 9425 N. It can achieve a maximum push force of 2050 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 270 mm nominal stroke by up to 40 mm, providing a usable travel window of 230-270 mm. It sets the end position but does not lock the load without live air.
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