Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 195mm 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
- Stroke195 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-30
The AirTAC SAIJ40X195-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, letting you dial the effective travel back by up to 30 mm to achieve a precise 165-195 mm usable window. Delivering 628 N of push force at 0.5 MPa, it is built around an extruded aluminum barrel with sensor grooves on both sides and operates at speeds between 30 and 800 mm/s.
This specific configuration features a SUS304 stainless steel rod (option B) for superior corrosion resistance and utilizes PT tapered port threads. The rear adjuster acts purely as a travel stop for end-position tuning, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 195 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 SAIJ40BX195-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×195 | 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 SAIJ40BX195-30 Is Used
Machine Changeover
Dial in the 165-195 mm stroke window instantly when switching between product sizes on a packaging line, avoiding mechanical rebuilds.
End-Position Trimming
Use the rear stopper to fine-tune the retract position during commissioning, ensuring perfect alignment without external shims.
Corrosive Assembly
Leverage the SUS304 stainless steel rod for pushing or clamping tasks in environments where standard carbon steel rods would degrade.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-30 the Right Cylinder?
Select this 40 mm bore when an application requires fine-tuning the retract end-position during commissioning or product changeovers without swapping cylinders or adding external stop blocks. If your setup needs less force, stepping down to a 32 mm bore yields 402 N at 0.5 MPa; stepping up to a 50 mm bore provides 982 N for heavier payloads. Because the nominal stroke is under 300 mm, side-load stress is minimal, though the 16 mm rod still requires alignment for optimal seal life.
For a true ISO 15552 replacement match, confirm the 40 mm bore, 195 mm stroke, 30 mm adjustment range, PT port threads, and the absence of a magnet (no -S). Remember that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. If pneumatic load-holding is required without live pressure, look to the SAIL or BSAI series instead of relying on this adjuster.
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 SAIJ40BX195-30 FAQ
At a standard operating pressure of 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can reach up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the 195 mm nominal stroke by up to 30 mm, creating a usable travel window of 165 to 195 mm. It functions as a mechanical stop for end-position tuning and does not lock the load without live air.
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