Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-20S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-20S
The AirTAC SAIJ40X160-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 140 to 160 mm without adding external stops. Using a 40 mm bore, it delivers 628N of push force at 0.5 MPa and 879N at 0.7 MPa. This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread.
Equipped with a magnet (-S), it integrates seamlessly with AirTAC CMSE reed and DMSE solid-state sensors via the dual-side barrel grooves. The rear adjuster acts purely as a mechanical stop for end-position tuning, meaning it will not hold the load if air pressure drops. It supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-20S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX160-20S Is Used
Machine Changeover
Dial in the exact end-stop between 140 and 160 mm during product size transitions without disassembling the line or swapping cylinders.
Sensor Integration
The integrated magnet works directly with DMSE solid-state and CMSE reed switches in the dual sensor grooves for precise position feedback.
Corrosive Setup
The SUS304 stainless steel rod provides reliable operation in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-20S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires precise end-position calibration during commissioning or frequent product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your application requires less force, stepping down to a 32 mm bore yields 402N at 0.5 MPa, while stepping up to a 50 mm bore provides 982N.
For load-holding without continuous live air pressure, note that this cylinder's adjuster is not a lock; you should instead explore an SAIL pneumatic lock or BSAI clamp-lock cylinder. Because the 160 mm stroke is relatively short, the 16 mm rod handles standard side loads adequately, but always verify your mounting interface. To match this ISO 15552 footprint exactly, specify the 40 mm bore, 160 mm stroke, 20 mm adjustment, PT ports, and the -S magnet option.
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 SAIJ40 Adjustable Cylinder SAIJ40BX160-20S FAQ
It provides 628N of push force and 528N of pull force at 0.5 MPa. The 20 mm rear adjuster allows you to trim the nominal 160 mm stroke back, giving a usable travel window of 140 to 160 mm.
No, the rear adjuster only acts as a mechanical travel stop and the air cushions only decelerate the end of travel. Neither function serves as a brake or lock. For fail-safe load holding, consider an SAIL or BSAI series cylinder.
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