Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 190mm 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
- Stroke190 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-30
The AirTAC SAIJ40X190-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 160 to 190 mm, allowing you to dial back the nominal 190 mm stroke by up to 30 mm during commissioning. Delivering 628 N of push force and 528 N of pull force at 0.5 MPa, it fits mid-range automation tasks perfectly.
This SKU is built with a SUS304 stainless steel rod for corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. Mounting options span Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets found on other series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 190 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 SAIJ40BX190-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×190 | 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 SAIJ40BX190-30 Is Used
Machine Changeover
Quickly reposition the retract end-stop by up to 30 mm when switching product sizes on a packaging line, eliminating the need to physically swap cylinders.
End-Position Tuning
Fine-tune the final retract position during commissioning to perfect a pressing or clamping operation within the 160-190 mm travel window.
Variable Diverter Stop
Act as an adjustable physical stop for items moving along a conveyor, allowing operators to alter the stopping distance for different carton lengths.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-30 the Right Cylinder?
Choose this 40 mm bore when a 32 mm bore (402 N push at 0.5 MPa) is too weak, but a 50 mm bore (982 N push at 0.5 MPa) would be overkill. The 30 mm adjustment window is ideal for product changeovers, letting you fine-tune the retract end position without swapping the cylinder or adding external stops. Since the 190 mm stroke is under the 300 mm side-load threshold, the 16 mm rod handles standard loads well, though long unsupported strokes still need an external guide.
When specifying an ISO 15552 replacement, match the 40 mm bore, 190 mm nominal stroke, 30 mm adjustment range, PT port threads, and the required mounting bracket. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true load-holding without continuous pressure, consider the SAIL air-released lock or BSAI clamp-lock cylinders.
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 SAIJ40BX190-30 FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw lets you shorten the effective stroke from the 190 mm nominal length down to 160 mm. This stopper only sets the travel end and deceleration point; it does not lock or hold the load without continuous air pressure.
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