Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40S 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 SAIJ160BX270-40S
The AirTAC SAIJ160X270-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 14074N of push force at 0.7 MPa. Its SUS304 stainless steel rod provides excellent corrosion resistance, and the integrated magnet supports position sensing. By turning the external stopper screw, you can fine-tune the effective travel down by up to 40 mm, creating a precise 230-270 mm usable stroke window without changing the cylinder.
This adjustable feature allows for exact end-position tuning during commissioning or product changeovers, eliminating the need to bolt on external stops or swap the entire actuator. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. Operating at speeds of 30-500 mm/s, it utilizes a PT G3/4 port and includes variable air cushions at both ends to manage deceleration of heavy loads.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40S |
|---|---|
| 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 SAIJ160BX270-40S
| 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 SAIJ160BX270-40S Is Used
Product Changeover
Dial in the 230-270 mm stroke window during format size changes on packaging lines, allowing rapid product size adjustments without replacing the actuator.
Heavy Press Tuning
Leverage the 14074N push force at 0.7 MPa for heavy pressing operations, using the rear screw to precisely set the bottoming position during initial machine commissioning.
Variable End Stops
Implement adaptable end-of-travel positioning in automated assembly equipment where multiple material thicknesses require a flexible mechanical stop rather than a fixed length.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX270-40S the Right Cylinder?
Choose this 160 mm bore actuator when an application requires substantial thrust, such as 10053N push at 0.5 MPa, combined with variable end-stop positioning. If your setup demands less force, stepping down to a 125 mm bore yields 6136N at 0.5 MPa, whereas moving up to a 200 mm bore provides 15708N. The adjustable stroke is specifically beneficial for machine setups requiring on-the-fly mechanical end-position adjustments rather than a fixed-stroke SAI cylinder.
When ordering for an ISO 15552 replacement, verify the 270 mm stroke, 40 mm adjustment range, PT G3/4 port, and the -S magnet option. Mounting choices include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 270 mm stroke is substantial, ensure adequate external guiding to prevent side-loading damage to the rod. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ160BX270-40S FAQ
The rear stopper screw allows you to mechanically shorten the nominal 270 mm stroke by up to 40 mm, providing an effective travel window of 230-270 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
At an operating pressure of 0.7 MPa, the SAIJ160X270-40-S generates 14074N of push force and 9425N of pull force. It can achieve a maximum push force of 18095N at 0.9 MPa.
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