Airtac SAIJ50 Adjustable Cylinder SAIJ50BX550-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX550-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 550mm 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
- Stroke550 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 SAIJ50BX550-30
The AirTAC SAIJ50X550-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 550 mm travel by up to 30 mm for a precise 520-550 mm usable window. Delivering 982 N of push force at 0.5 MPa, it handles mid-range automation tasks with ease. The extruded aluminum barrel features sensor grooves on both sides for flexible switch placement.
This specific configuration utilizes a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. Because the 550 mm stroke is relatively long, the 16 mm rod diameter should be paired with an external guide to prevent excessive side-loading. The rear adjuster acts purely as a mechanical stop for end-position tuning, not a load-holding lock.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX550-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX550-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 550 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 SAIJ50BX550-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×550 | 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 SAIJ50BX550-30 Is Used
Product Changeover
Quickly fine-tune the 520-550 mm end-stop during format size changes on packaging lines without changing the cylinder.
Variable End Stops
Dial in the exact retraction point for diverter gates handling varying package lengths on a conveyor system.
Machine Setup
Precisely set the rear stopper during commissioning to perfect tooling alignment without adding external shims.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX550-30 the Right Cylinder?
Choose this 50 mm bore when you need more force than a 40 mm cylinder (528 N pull at 0.5 MPa) but want a smaller footprint than a 63 mm unit (1402 N pull). The 30 mm adjustment range is ideal for machine setups requiring variable end-stops during product changeovers, eliminating the need to physically swap cylinders or bolt on external stops. For true load-holding without continuous live air pressure, consider an AirTAC SAIL or BSAI cylinder instead of relying on the adjuster.
When matching this ISO 15552 interchangeable cylinder, verify the 550 mm stroke, 30 mm adjustment range, PT port threads, and your required mounting style. SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). As the stroke exceeds 300 mm, ensure your mounting configuration properly supports the rod to mitigate deflection and side-load wear.
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 SAIJ50BX550-30 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 up to 1767 N push force at 0.7 MPa.
The rear mechanical screw allows you to shorten the 550 mm nominal stroke by up to 30 mm, creating a 520-550 mm travel window. It functions as a hard stop for position tuning and does not lock the load without air pressure.
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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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