Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30S 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 SAIJ50AX375-30S
The AirTAC SAIJ50X375-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 982N push force at 0.5 MPa and features a 375mm nominal stroke that can be fine-tuned backward by up to 30mm, yielding a precise 345-375mm usable travel window. This built-in adjustability allows you to set exact end positions during commissioning without swapping out the barrel or adding external stops.
This variant includes a magnet for position sensing and uses a SUS420J2 stainless steel piston rod to handle side loads better than a standard carbon rod. It integrates dual-sided sensor grooves compatible with AirTAC CMSE reed and DMSE solid-state switches. The extruded aluminum barrel maintains a standard ISO 15552 mounting interface, and the unit supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30S |
|---|---|
| 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 SAIJ50AX375-30S
| 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 SAIJ50AX375-30S Is Used
Machine Changeovers
Dial in the 345-375mm travel window on the rear screw during product family changeovers to set new end positions instantly without changing cylinder hardware.
Variable End Stops
Accommodate varying package sizes on a conveyor diverter by trimming the retract stroke up to 30mm to prevent overtravel and crushing.
Setup Fine Tuning
Nail the exact end-of-stroke position during machine commissioning by turning the rear stopper, avoiding the need to bolt on external mechanical stops.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30S the Right Cylinder?
Select this 50mm bore cylinder when your equipment requires a 345-375mm stroke range and moderate thrust; stepping down to a 40mm bore drops the push force to 628N at 0.5 MPa, while stepping up to a 63mm bore increases it to 1559N. The adjustable rear stopper is ideal for product-size changeovers on a line, but remember it acts only as a travel stop and does not hold the load without live air. For true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder.
When matching this ISO 15552 cylinder to an existing fixture, verify the 50mm bore, 375mm stroke, 30mm adjustment, PT tapered port threads, and the required -S magnet. Because the stroke is 375mm, the 20mm diameter rod is highly susceptible to deflection under heavy lateral loads; always pair this unit with an external linear guide to prevent premature seal wear.
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 SAIJ50AX375-30S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder generates a push force of 982N and a pull force of 825N. It can reach a maximum push force of 1767N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 375mm nominal stroke by up to 30mm, creating a usable travel window of 345-375mm. It functions as an end-position stop and does not lock or hold the load without continuous air pressure.
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