Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 375mm 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
- Stroke375 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 SAIJ50BX375-50S
The AirTAC SAIJ50X375-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 982N of push force at 0.5 MPa. It features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet (-S) for position sensing. With a 375mm nominal stroke and a 50mm adjustment range, operators can fine-tune the effective travel anywhere between 325mm and 375mm during commissioning.
This adjustable window allows precise end-position tuning without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. The rear screw acts as a travel stop to set the retraction end, but it does not lock the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 375 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 SAIJ50BX375-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×375 | 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 SAIJ50BX375-50S Is Used
Machine Changeover
Dial in the 325-375mm travel window during product size transitions without physically swapping cylinders or re-machining hard stops.
End-Position Tuning
Fine-tune the retract end-stop at commissioning to achieve exact positioning, compensating for mechanical tolerances in the fixture.
Variable Diverting
Adjust the stroke length on a sorting diverter to handle different package sizes on the fly while maintaining 982N of push force.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-50S the Right Cylinder?
Select this 50mm bore when an application requires moderate thrust (982N push at 0.5 MPa) alongside variable end-stop positioning. If your setup demands less force, stepping down to a 40mm bore yields 628N; if more power is needed, a 63mm bore provides 1559N. The adjustable stroke is ideal for machine changeovers, allowing you to dial in the 325-375mm travel window on the fly instead of machining hard stops.
Because the 375mm stroke is relatively long, the 20mm rod diameter requires external guiding to prevent excessive side-loading and premature seal wear. This SKU uses PT tapered ports and supports the SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. For load-holding without continuous air pressure, integrate an external rod lock or choose a SAIL or BSAI cylinder.
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 SAIJ50BX375-50S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear adjuster screw allows you to shorten the 375mm nominal stroke by up to 50mm, creating a usable travel window of 325-375mm. This stopper sets the end position but does not hold the load without live air.
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Covers non-human-caused product damage.
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