Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-50
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 55mm 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
- Stroke55 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 SAIJ50AX55-50
The AirTAC SAIJ50X55-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 55 mm travel to a precise usable window of 5-55 mm. Delivering 982 N of push force at 0.5 MPa, it handles mid-range actuation with ease while utilizing a PT tapered port thread and an SUS420J2 stainless steel rod for enhanced durability against moisture.
Because the external stopper acts on the retract end, you can fine-tune the end position during commissioning without swapping hardware or adding external stops. This profile cylinder features variable air cushions at both ends to decelerate the load smoothly, though the adjuster functions strictly as a travel stop and will not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-50 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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 SAIJ50AX55-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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 SAIJ50AX55-50 Is Used
Product Changeover
Dial in the exact end-position rapidly when switching between product sizes on a packaging line without replacing the cylinder.
Variable End Stops
Set precise retract distances for delicate assembly operations where the 5-55 mm travel window must be perfectly tuned.
Machine Setup
Fine-tune the stroke during initial commissioning to avoid mechanical interference and optimize cycle timing.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-50 the Right Cylinder?
Selecting this 50 mm bore makes sense when your application requires up to 982 N of thrust at 0.5 MPa; if you need less force, stepping down to a 40 mm bore yields 628 N, while moving up to a 63 mm bore provides 1559 N. The 50 mm adjustment range on this 55 mm stroke is exceptionally wide, offering maximum flexibility for variable end-stops and frequent product-size changeovers on a line. To match this ISO 15552 interchangeable cylinder for a replacement, verify the 55 mm stroke, 50 mm adjustment, PT port, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SAIJ50AX55-50 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. It can reach a maximum push force of 1767 N at 0.9 MPa.
The rear adjuster screw allows you to trim the effective travel from the 55 mm nominal stroke down to as little as 5 mm. This creates a 5-55 mm adjustable window for fine-tuning the end position at commissioning, but it acts as a stop and does not lock the load without continuous air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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