Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10S
The AirTAC SAIJ40X165-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the retract end-position during commissioning. It provides a usable travel window of 155-165 mm, giving you precise 10 mm of flexibility without needing external stops. In the 40 mm bore class, it delivers a 0.7 MPa push force of 879 N and a pull force of 528 N at 0.5 MPa, making it well-suited for moderate load positioning tasks.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a built-in magnet for position sensing. It is compatible with AirTAC CMSE reed switches and DMSE solid-state electronic sensors fitted into the dual-side sensor grooves on the extruded aluminum barrel. The PT tapered port thread and M12x1.25 rod thread ensure secure, leak-free connections while handling standard side loads effectively.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 165 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 SAIJ40BX165-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×165 | 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 SAIJ40BX165-10S Is Used
Machine Changeover
Dial in the exact 155-165 mm retract position during product size changeovers without adding external mechanical stops to your fixture.
End-Position Tuning
Fine-tune the end-of-stroke location during machine commissioning to perfect timing and avoid mechanical crashes.
Stainless Rod Handling
Leverage the SUS304 rod and DMSE electronic sensors for reliable position feedback in environments requiring high corrosion resistance.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI cylinder when your machine setup requires variable end-stops or product-size changeovers without physically swapping the actuator. If your application needs less force, the 32 mm bore offers 563 N of push force at 0.7 MPa; if you require more power, stepping up to the 50 mm bore yields 1374 N.
For an exact ISO 15552 replacement match, verify the 40 mm bore, 165 mm stroke, 10 mm adjustment range, PT port thread, and the -S magnet option. Remember that the rear adjuster acts strictly as a travel stop, not a lock; this cylinder will not hold a load without live air pressure. For load-holding requirements without continuous air, consider using an external pilot-operated check valve or the SAIL locking series.
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 SAIJ40BX165-10S FAQ
At 0.7 MPa, this 40 mm bore cylinder provides a push force of 879 N and a pull force of 739 N. It operates at speeds ranging from 30 to 800 mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 10 mm, creating a usable travel window of 155 to 165 mm. It functions only as a travel stop and does not lock or hold the load without continuous air pressure.
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