Airtac SAIJ50 Adjustable Cylinder SAIJ50BX450-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX450-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 450mm 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
- Stroke450 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 SAIJ50BX450-100S
The AirTAC SAIJ50X450-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 350-450mm from the 450mm nominal stroke. Delivering 982N of push force and 825N of pull force at 0.5MPa, it handles mid-range automation tasks effectively. This variant includes a SUS304 stainless steel rod for corrosion resistance and a built-in magnet for CMSE or DMSE sensors.
Equipped with PT tapered G1/4 ports and adjustable air cushions at both ends, this extruded aluminum barrel design integrates sensor grooves on both sides. The rear mechanical stopper allows you to fine-tune end positions during commissioning or product changeovers without swapping the cylinder or adding external stops.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX450-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX450-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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 SAIJ50BX450-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×450 | 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 SAIJ50BX450-100S Is Used
Machine Changeover
Dial in the exact end-stop between 350 and 450mm when switching a packaging line to a new carton size.
Variable Diverter
Adjust the stroke on a sorting gate to handle varying package lengths without repositioning the cylinder.
Press Positioning
Fine-tune the approach distance of a 982N press operation during initial commissioning to avoid tooling crashes.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX450-100S the Right Cylinder?
Choose this 50mm bore when an application requires precise positioning over a long travel distance but demands flexibility for future adjustments. If you need higher thrust, stepping up to the 63mm bore yields 1559N of push force at 0.5MPa. Conversely, downsizing to the 40mm bore drops output to 628N. Because the 450mm stroke is substantial, an external guide is recommended to prevent rod side-load damage despite the robust 20mm rod and M16x1.5 thread.
Select the SAIJ adjustable-stroke format over the fixed SAI type when machine setups experience frequent product size changes. To replace an ISO 15552 cylinder, match the 50mm bore, 450mm stroke, 100mm adjustment range, PT G1/4 port, and -S magnet. Remember that the rear adjuster is a travel stop, not a lock; for true load-holding without live air pressure, use an SAIL or BSAI cylinder.
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 SAIJ50BX450-100S FAQ
At 0.5MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 200kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke by up to 100mm. This creates a usable travel window of 350-450mm, enabling fine-tuning of the end position without replacing the cylinder.
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