Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-10
The AirTAC SAIJ40X150-10 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 628N of push force at 0.5 MPa and provides a usable travel window of 140-150mm, letting you trim the effective stroke by up to 10mm without swapping hardware. This fine-tuning capability is perfect for dialing in end positions during commissioning.
Built with a SUS304 stainless steel rod for superior corrosion resistance, this 40mm bore unit uses a PT tapered port and includes variable air cushions at both ends. The rear adjuster acts purely as a mechanical stop to set the retract position; it does not hold the load without live air pressure. For load-holding requirements, consider an external rod lock or the AirTAC SAIL series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 SAIJ40BX150-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 SAIJ40BX150-10 Is Used
Commissioning Calibration
Dial in the exact retract distance within a 140-150mm window during initial machine setup, avoiding the need to physically swap out cylinders for minor position corrections.
Product Changeover
Quickly adjust the 10mm stroke trim via the rear stopper when a production line switches to a similar product variant with slightly different sizing requirements.
Machining Clamping
Utilize the 628N push force at 0.5MPa to secure workpieces, using the fine stroke adjustment to prevent over-travel and ensure delicate parts are not crushed.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-10 the Right Cylinder?
Select this 40mm bore cylinder when an application requires precise end-position tuning within a 140-150mm travel window, rather than a fixed 150mm stroke. If your setup needs less force, stepping down to a 32mm bore yields 402N of push force at 0.5MPa; if more power is required, a 50mm bore provides 982N. Because the 150mm stroke is below the 300mm threshold, side-load stress is minimal, though external guides are always recommended for unsupported loads.
When specifying a replacement, verify the 40mm bore, 150mm stroke, 10mm adjustment range, PT port thread, and standard mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this configuration omits the -S magnet; adding it would enable CMSE reed and DMSE electronic sensors in the dual-side barrel grooves.
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 SAIJ40BX150-10 FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the nominal 150mm stroke by up to 10mm, creating a 140-150mm usable travel window. It only sets the end position and does not lock the load without continuous air pressure.
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