Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 425mm 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
- Stroke425 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20S
The AirTAC SAIJ160X425-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 425 mm nominal travel to a precise 405-425 mm window during commissioning. Built with a SUS304 stainless steel rod, it delivers massive thrust, pushing 14074 N at 0.7 MPa and pulling 9425 N, making it suitable for heavy-duty positioning tasks.
This variant includes a magnet for CMSE and DMSE sensors and uses PT tapered ports sized at G3/4. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting. Because the stroke reaches 425 mm on a 160 mm bore, external guiding is recommended to prevent excessive side-loading on the rod.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 425 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 SAIJ160BX425-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×425 | 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 SAIJ160BX425-20S Is Used
Heavy Press Tuning
Fine-tune the exact bottoming position of a high-tonnage press within the 405-425 mm window without swapping out the main actuator.
Pallet Changeover
Adjust the retract stop distance on the fly to accommodate different pallet lengths during automated line transitions.
Large Fixture Setup
Dial in the exact end-position for large machining fixtures, utilizing the SUS304 rod for durability in harsh environments.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20S the Right Cylinder?
Choose this 160 mm bore cylinder when a 125 mm bore (providing 8590 N push at 0.7 MPa) lacks the necessary force for heavy loads. The integrated 20 mm rear stopper allows fine-tuning of the end position without adding external physical stops or changing the cylinder body, which is ideal for product size changeovers. The standard speed range for this bore is 30-500 mm/s.
For an exact ISO 15552 replacement match, ensure your specifications require a 425 mm stroke, 20 mm adjustment range, PT G3/4 port thread, and a -S magnet. Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air; if true load-holding is required without pneumatic pressure, consider an AirTAC SAIL or BSAI locking cylinder. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ160BX425-20S FAQ
At 0.7 MPa operating pressure, this 160 mm bore cylinder provides a push force of 14074 N and a pull force of 9425 N. At the maximum 0.9 MPa, the push force increases to 18095 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the 425 mm nominal stroke down to a minimum of 405 mm. It sets the end position but does not lock the load without continuous air pressure.
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