Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-75 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 SAIJ50AX375-75
The AirTAC SAIJ50X375-75 is a double-acting, single-rod ISO 15552 profile cylinder featuring an integrated rear stroke adjuster. It delivers a robust 982N push force at 0.5 MPa, making it a strong choice for moderate-load industrial tasks. The built-in rear stopper provides a usable travel window of 300 to 375 mm, allowing you to dial in the exact retract position during commissioning.
This variant is configured with an SUS420J2 stainless steel rod (code A) for superior corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes dual-side sensor grooves for straightforward position monitoring. It uses PT tapered port threads (G1/4) and operates at speeds between 30 and 800 mm/s.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-75 |
|---|---|
| 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 SAIJ50AX375-75
| 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 SAIJ50AX375-75 Is Used
Machine Setup Calibration
Dial in the exact retract end-position during commissioning to achieve precise alignment without machining custom spacer plates.
Product Size Changeover
Quickly adapt the stroke window from 300 to 375 mm on a packaging line when switching between different package dimensions.
Variable End-Stop Positioning
Fine-tune the retract stop on the fly for multi-stage forming operations that require slightly different resting positions per cycle.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-75 the Right Cylinder?
Select this 50mm bore adjustable-stroke model when your machine setup requires variable end-stops or frequent product changeovers, as the rear screw allows fine-tuning without swapping the cylinder or adding external stopper blocks. If you need less force, stepping down to a 40mm bore yields 628N push at 0.5 MPa; if your application demands more clamping power, a 63mm bore provides 1559N. Because this unit features a 375mm stroke, long unsupported travel increases the risk of rod deflection, so an external guide is recommended to handle side loads.
For drop-in replacements, match the 50mm bore, 375mm nominal stroke, 75mm adjustment range, PT G1/4 port, and the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the SAIJ series omits FB, CA, CB, and CR mounts. Remember that the rear adjuster acts only as a travel stop and cannot hold a load without continuous live air pressure; for true fail-safe load holding, consider the SAIL or BSAI series instead.
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 SAIJ50AX375-75 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At the maximum rated pressure of 1.0 MPa, it can deliver up to 200 kgf.
The rear adjusting screw acts as an external mechanical stop, allowing you to shorten the effective stroke by up to 75 mm. This creates a usable travel window of 300 to 375 mm, enabling precise end-position tuning without replacing the cylinder.
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