Airtac SAIJ50 Adjustable Cylinder SAIJ50BX150-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX150-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke150 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX150-75S
The AirTAC SAIJ50X150-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and features a 20mm piston rod with an M16x1.5 thread. The -75 designation means you can dial back the effective travel by up to 75 mm, creating a highly flexible 75-150 mm usable stroke window for variable end-position tuning.
This unit includes a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread. It carries a built-in magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic sensors, which seat cleanly into the dual-side sensor grooves on the extruded aluminum barrel. The rear adjuster acts purely as a mechanical stop to set deceleration limits and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX150-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX150-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX150-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX150-75S Is Used
Machine Changeover
Dial in the 75-150 mm travel window instantly when switching product sizes on a packaging line, eliminating the need to physically swap cylinders.
End-Position Tuning
Use the rear stopper to fine-tune the exact retract position during machine commissioning, ensuring perfect alignment without external shims.
Washdown Handling
Leverage the SUS304 stainless steel rod for positioning tasks in food or chemical environments where moisture and corrosion are concerns.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX150-75S the Right Cylinder?
Choose this 50 mm bore when an application requires around 982N push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628N. An adjustable stroke is preferred over a fixed SAI cylinder when you need to fine-tune the retract end position during commissioning or product changeover without bolting on external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as the SAIJ adjuster is a travel stop, not a lock. To match an ISO 15552 replacement, verify the 150 mm stroke, 75 mm adjustment, PT G1/4 port, and the -S magnet requirement.
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 SAIJ50 Adjustable Cylinder SAIJ50BX150-75S FAQ
At 0.5 MPa it provides 982N of push force and 825N of pull force. If higher force is needed, stepping up to a 63 mm bore yields 1559N of push force at the same pressure.
The nominal stroke is 150 mm, but the -75 adjustment code allows you to shorten the effective travel by up to 75 mm. This creates a usable stroke window of 75-150 mm, settable via the rear stopper.
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