Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10 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 SAIJ40BX165-10
The AirTAC SAIJ40X165-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, delivering 628N of push force and 528N of pull force at 0.5 MPa. An external stopper screw at the rear lets you fine-tune the travel end during commissioning, creating a usable stroke window of 155-165 mm without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This SKU is built with a SUS304 stainless steel rod (option B) for superior corrosion resistance and ships with PT tapered port threads. It carries a 16mm piston rod and M12x1.25 rod thread, operating at speeds from 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to set the end position; it does not lock the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10 |
|---|---|
| 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 SAIJ40BX165-10
| 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 SAIJ40BX165-10 Is Used
Machine Setup Tuning
Dial in the exact 155-165mm end-stop position during equipment commissioning without swapping cylinders or machining external spacers.
Product Changeover
Quickly adjust the retract stop on packaging lines when running different product sizes, using the rear screw to shift the travel window.
Clamping Positioning
Precisely set the clamp advance distance, leveraging the 628N push force and fine 10mm adjustment window for delicate workholding.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-10 the Right Cylinder?
Choose this 40mm bore when a 32mm bore (offering 402N push at 0.5 MPa) is too weak, but a 50mm bore (982N push) is oversized. The 10mm adjustment range is ideal for applications requiring exact end-position tuning during machine setup or product changeover, rather than relying on a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster only decelerates and stops travel.
As a dimensionally interchangeable ISO 15552 cylinder, replacement requires matching the 40mm bore, 165mm stroke, 10mm adjustment, PT port thread, and SUS304 rod material. Since the 165mm stroke is under 300mm, side-load concerns are minimal, but long unsupported loads should still use an external guide.
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 SAIJ40BX165-10 FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. The maximum push force reaches 1130N at 0.9 MPa.
A rear stopper screw lets you mechanically shorten the 165mm nominal stroke by up to 10mm, providing a usable travel window of 155-165mm. This stopper only sets the end position and does not hold the load without live air pressure.
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