Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30 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 SAIJ50AX375-30
The AirTAC SAIJ50X375-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 345-375 mm usable travel window, allowing you to dial back the 375 mm nominal stroke by up to 30 mm during commissioning. Delivering 982 N push and 825 N pull forces at 0.5 MPa, it fits mid-range actuation tasks perfectly.
This variant uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads (G1/4). The extruded aluminum barrel includes sensor grooves on both sides. It supports AirTAC CMSE reed and DMSE electronic sensors, though this specific SKU is configured without a magnet.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30 |
|---|---|
| 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 SAIJ50AX375-30
| 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 SAIJ50AX375-30 Is Used
Machine Changeover
Dial in the exact retract position within the 345-375 mm window when switching product sizes on a packaging line.
End-Stop Tuning
Fine-tune the final resting position during commissioning without swapping out the entire cylinder body.
Variable Positioning
Adjust the stroke length on the fly to accommodate different material widths or feeding lengths on the fly.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-30 the Right Cylinder?
Choose this 50 mm bore when a 40 mm cylinder (628 N push at 0.5 MPa) is too weak, but a 63 mm unit (1559 N) is oversized. The adjustable stroke is ideal for machine changeovers, letting you fine-tune the retract end position without adding external stops. For any load-holding requirements without live air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is only a travel stop.
To match this ISO 15552 replacement, verify the 50 mm bore, 375 mm stroke, 30 mm adjustment, PT G1/4 ports, and the Basic, FA, LB, TC, FTC, TCM1, TCM2 mounting set. Because the 375 mm stroke is long, ensure you use an external guide to prevent excessive side-loading on the 20 mm rod and M16x1.5 thread.
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 SAIJ50AX375-30 FAQ
At 0.5 MPa, it provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
The rear adjuster acts as a mechanical stop that lets you shorten the 375 mm nominal stroke by up to 30 mm, creating a 345-375 mm travel window. It is a stop, not a lock, and cannot hold the load without live air.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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