Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-75S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-75S 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 SAIJ40BX165-75S
The AirTAC SAIJ40X165-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel down from the 165mm nominal stroke, providing a usable window of 90-165mm. Delivering 879N of push force at 0.7MPa, it integrates an SUS304 stainless steel rod for superior corrosion resistance and features a built-in magnet for position sensing.
This adjustable model omits the FB, CA, CB, and CR mounts, offering a reduced ISO 15552 mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The PT tapered port threads match the G1/4 connection standard for this bore size, while the rear stopper allows fine end-position tuning at commissioning without swapping the cylinder.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-75S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-75S |
|---|---|
| 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 SAIJ40BX165-75S
| 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 SAIJ40BX165-75S Is Used
Product Changeovers
Dial in the 90-165mm travel window during format size changes on packaging lines without physically swapping the cylinder body.
End-Position Tuning
Fine-tune the retract end-position at machine commissioning to perfect seating forces, avoiding the need to bolt on external physical stops.
Corrosive Setup Testing
Leverage the SUS304 stainless steel rod and adjustable stroke for repeatable travel validation in environments requiring high corrosion resistance.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX165-75S the Right Cylinder?
Choose this 40mm bore when you need precise variable end-stops for product-size changes on a line; if you require less force, stepping down to a 32mm bore provides 563N at 0.7MPa. The 16mm rod and M12x1.25 thread handle moderate side loads well, but since the stroke is 165mm, always guide the load externally to prevent binding. The rear adjuster acts strictly as a travel stop for deceleration, not a lock. For load-holding without live air pressure, select a SAIL or BSAI cylinder instead. To match this ISO 15552 replacement, specify: 40mm bore, 165mm stroke, 75mm adjustment, PT G1/4 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and a -S magnet.
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 SAIJ40BX165-75S FAQ
At 0.7 MPa operating pressure, this 40mm bore cylinder generates 879N of push force and 724N of pull force, with a maximum thrust of 1130N at 0.9 MPa.
The rear adjuster allows you to shorten the 165mm nominal stroke by up to 75mm, creating an adjustable travel window of 90-165mm to fine-tune the retract end position during setup.
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