Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-20S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-20S 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 SAIJ160BX270-20S
The AirTAC SAIJ160X270-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 270 mm nominal stroke by up to 20 mm for a precise 250-270 mm usable travel window. It delivers substantial thrust, pushing 14074 N and pulling 9425 N at 0.7 MPa. This bore features a robust 40 mm piston rod and a G3/4 PT port. Built with a SUS304 stainless steel rod (option B), it is highly resistant to corrosion and suitable for harsher industrial environments. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) directly supports AirTAC CMSE reed and DMSE electronic solid-state switches for precise position feedback.
Unlike fixed-stroke SAI cylinders, this adjustable variant allows fine end-position tuning at commissioning or during product changeovers without swapping the hardware or adding external stops. The rear adjuster acts purely as a mechanical travel stop to set the retract end position; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-20S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-20S |
|---|---|
| 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 SAIJ160BX270-20S
| 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 SAIJ160BX270-20S Is Used
Heavy Press Fit Tuning
Dial in the exact 250-270 mm retract position during heavy press operations to accommodate varying material thicknesses without recalibrating the entire machine.
Automated Line Changeover
Adjust the mechanical end-stop on the fly when switching product sizes on a high-force conveyor line, saving downtime by avoiding physical cylinder swaps.
Corrosive Assembly Stations
Leverage the SUS304 stainless steel rod for high-force clamping and positioning tasks in environments where moisture or corrosive elements are present.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-20S the Right Cylinder?
Choose this 160 mm bore when your application requires high force, delivering 14074 N push at 0.7 MPa. If you need less force, stepping down to a 100 mm bore yields 5497 N push at 0.7 MPa, while moving up to a 200 mm bore provides 21991 N push. The adjustable stroke is specifically beneficial for machine setup and changeover, letting you set variable end stops on the fly. As a dimensionally interchangeable ISO 15552 cylinder, it matches the standard bore, stroke, PT G3/4 port, and mounting dimensions. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR options. The -S magnet works seamlessly with CMSE and DMSE sensors.
With a 270 mm stroke, the 40 mm rod provides excellent rigidity, but long unsupported strokes still require an external guide to prevent excessive side-loading and premature seal wear. The operating speed for this 160 mm bore is 30-500 mm/s.
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 SAIJ160BX270-20S FAQ
At 0.7 MPa operating pressure, this 160 mm bore cylinder generates 14074 N of push force and 9425 N of pull force. At the maximum rated pressure of 1.0 MPa, it can deliver up to 2050 kgf.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke from the nominal 270 mm down to 250 mm. This creates a 250-270 mm travel window for fine-tuning the end position at commissioning without replacing the cylinder.
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