Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-50S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-50S 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 SAIJ160BX425-50S
The AirTAC SAIJ160X425-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 425 mm travel by up to 50 mm. This creates a precise 375-425 mm usable stroke window, ideal for fine-tuning end positions during commissioning without swapping out the entire actuator. It delivers massive thrust, pushing 18095 N at 0.9 MPa, and features a durable SUS304 stainless steel rod to resist corrosion in harsh environments.
This model includes a magnetic piston (-S) for position sensing and uses PT tapered ports sized at G3/4. The extruded aluminum barrel incorporates sensor grooves on both sides, accommodating AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts strictly as a travel stop to set the retraction endpoint, meaning it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-50S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-50S |
|---|---|
| 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 SAIJ160BX425-50S
| 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 SAIJ160BX425-50S Is Used
Heavy Press Tuning
Fine-tune the 375-425 mm retraction stop on heavy stamping or press equipment to accommodate varying material thicknesses without changing the actuator.
Product Size Changeover
Adjust the rear stopper on packaging or palletizing lines to handle different product dimensions quickly during production shift changes.
Long-Stroke Alignment
Leverage the robust 40 mm SUS304 rod and adjustable end-position to precisely set the alignment depth of heavy industrial components.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-50S the Right Cylinder?
Choose this 160 mm bore when an 80 mm cylinder (providing 4523 N push force at 0.9 MPa) lacks the rigidity and power for heavy loads, but a 200 mm bore is physically oversized. The 50 mm adjustment range is selected over a fixed-stroke SAI when a machine requires variable end-stops to accommodate product changeovers. Because the nominal stroke is 425 mm, an external guide is recommended to prevent excessive side-loading on the piston rod.
To match this ISO 15552 interchangeable cylinder, verify the 160 mm bore, 425 mm stroke, 50 mm adjustment, G3/4 PT ports, and the -S magnet. If your application requires true load-holding without live air pressure, a plain SAIJ is insufficient; consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR.
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 SAIJ160BX425-50S 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 10053 N at 0.5 MPa.
The rear adjuster acts as a mechanical stop that shortens the 425 mm nominal stroke by up to 50 mm, providing a usable travel window of 375-425 mm. It only sets the end position and does not lock the load without live air pressure.
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