Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100S
The AirTAC SAIJ40X180-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 100 mm. With a 180 mm nominal stroke, this gives you a wide 80-180 mm usable travel window for precise end-position tuning during commissioning or product changeovers, all without swapping the barrel or adding external stops. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
This SKU is built with a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel features sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It uses a G1/4 port with PT tapered threading, includes 30 mm variable air cushions at both ends, and operates at speeds of 30-800 mm/s.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 180 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 SAIJ40BX180-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×180 | 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 SAIJ40BX180-100S Is Used
Product Changeover
Quickly dial the stroke back from 180 mm to 80 mm when switching the production line to a smaller product size, eliminating the need to physically swap cylinders.
End-Stop Tuning
Fine-tune the final retract position during machine commissioning to achieve exact positioning tolerances without machining custom external spacers.
Corrosive Assembly
Leverage the SUS304 stainless steel rod for pushing or lifting tasks in washdown or lightly corrosive manufacturing environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100S the Right Cylinder?
Choose this 40 mm bore when your application requires roughly 628 N of push force at 0.5 MPa. If your setup needs less force, the 32 mm bore provides 402 N; if you need more clamping power, stepping up to the 50 mm bore yields 982 N. The massive 100 mm adjustment range on this model is perfect for machines that process multiple product sizes, letting you dial in the exact end-stop on the fly rather than machining new hard stops.
Remember that the rear adjuster acts as a travel stop, not a clamp or brake—it cannot hold a load without continuous live air pressure. For load-holding requirements without air, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants. To match this cylinder as an ISO 15552 replacement, specify: 40 mm bore, 180 mm stroke, 100 mm adjustment, G1/4 port with PT threads, SUS304 rod, 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 SAIJ40BX180-100S FAQ
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 128 kgf.
The rear adjuster screw allows you to shorten the 180 mm nominal stroke by up to 100 mm, providing an adjustable travel window of 80 to 180 mm. The adjuster acts as a physical stop to fine-tune the end position; it is not a lock and will not hold the load without live air pressure.
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