Airtac SAIJ50 Adjustable Cylinder SAIJ50AX220-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX220-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 220mm 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
- Stroke220 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX220-75
The AirTAC SAIJ50X220-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 145 to 220 mm usable travel window. Delivering 982 N of push force and 825 N of pull force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and a G1/4 PT tapered port.
This adjustable design allows you to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. It includes variable air cushions at both ends and dual sensor grooves, though position sensing requires adding a magnet (-S) to operate AirTAC CMSE reed or DMSE solid-state switches.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX220-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX220-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 220 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 SAIJ50AX220-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×220 | 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 SAIJ50AX220-75 Is Used
Machine Setup & Commissioning
Fine-tune the retract end position precisely during initial commissioning, saving time by avoiding physical cylinder swaps or adding external stopper blocks.
Product Size Changeover
Quickly adapt the travel window from 145 to 220 mm when running different product sizes on the same line, maximizing production flexibility.
Variable End-Stop Positioning
Dial in the exact clamping or positioning distance for varying workpiece dimensions without altering the fixed machinery mounting points.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX220-75 the Right Cylinder?
Choose this 50 mm bore when 40 mm (628 N push at 0.5 MPa) lacks the necessary thrust and 63 mm (1559 N) is oversized. The 75 mm adjustment range is ideal for product changeovers on a line, letting you dial in the exact end-stop without mechanical rebuilds. For fixed travel needs, the standard SAI cylinder is a simpler choice.
This model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2, omitting FB/CA/CB/CR). Because the 220 mm stroke exceeds 300 mm? No, but for any longer setups, external guides are recommended to manage side loads. The rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, use an external rod lock or point to the SAIL or BSAI series.
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 SAIJ50AX220-75 FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 75 mm, creating a usable travel window of 145 to 220 mm. It only sets the travel end and does not lock or hold the load without live air pressure.
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
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