Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-40S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-40S
The AirTAC SAIJ160X400-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 400 mm nominal stroke by up to 40 mm. This yields a precise 360-400 mm usable travel window, ideal for fine-tuning end positions during machine commissioning or product changeovers without swapping out the entire actuator. It delivers substantial thrust, providing 14074 N push force at 0.7 MPa and reaching 18095 N at 0.9 MPa.
Built for durability and sensing integration, this variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position detection. It is fully compatible with AirTAC CMSE reed switches and DMSE solid-state sensors mounted into the dual-side sensor grooves on the extruded aluminum barrel. The rear adjuster acts solely as a mechanical stop to set the travel endpoint and does not lock or hold the load pneumatically.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-40S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 400 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 SAIJ160BX400-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×400 | 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 SAIJ160BX400-40S Is Used
Heavy Press Tuning
Dial in the exact 360-400 mm end-position for large assembly presses, compensating for mechanical wear or tooling height variations without machining new spacer blocks.
Product Changeover
Quickly adjust the travel end-stop on packaging lines when switching between different pallet or product sizes, minimizing downtime and avoiding cylinder replacement.
Automated Welding
Position heavy welding fixtures accurately using the rear adjuster, while the SUS304 rod withstands harsh industrial environments and high-temperature splatter.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-40S the Right Cylinder?
Selecting this 160 mm bore actuator provides a massive force output, stepping up significantly from the 100 mm bore which yields 5497 N push force at 0.7 MPa. The adjustable stroke mechanism is highly advantageous when you need variable end-stops or precise positioning at commissioning that a fixed-stroke SAI cylinder cannot accommodate. For position feedback, the integrated magnet pairs seamlessly with CMSE and DMSE sensors.
When replacing an ISO 15552 cylinder, match the 160 mm bore, 400 mm stroke, 40 mm adjustment range, PT tapered port thread, and SUS304 rod material. Note that the SAIJ mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments, omitting FB, CA, CB, and CR brackets. Because the 400 mm stroke is substantial, the 40 mm rod diameter requires an external guide to prevent side-load deflection on long unsupported extensions. Furthermore, this cylinder relies on live air to maintain position; the rear adjuster is a travel stop, not a lock. For true load-holding without air pressure, consider an AirTAC SAIL or BSAI clamp-lock 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 SAIJ160BX400-40S FAQ
At an operating pressure of 0.7 MPa, this 160 mm bore cylinder generates 14074 N of push force and 9425 N of pull force. At 0.9 MPa, the push force increases to 18095 N.
The rear adjusting screw acts as a mechanical stop that allows you to shorten the effective travel from the nominal 400 mm down to 360 mm. This provides a 360-400 mm adjustable window for fine-tuning the retract end position during setup, but it does not lock the load without live air pressure.
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