Airtac SAIJ50 Adjustable Cylinder SAIJ50BX475-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX475-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 475mm 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
- Stroke475 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 SAIJ50BX475-75S
The AirTAC SAIJ50X475-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 400-475 mm usable travel window, letting you dial back the nominal 475 mm stroke by up to 75 mm during commissioning. Delivering 982 N of push force at 0.5 MPa, it bridges the gap between smaller 40 mm bores and larger 63 mm units.
This specific SKU is built with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. You can directly mount AirTAC CMSE reed or DMSE solid-state switches into the dual-side sensor grooves. It uses PT tapered ports and omits the FB, CA, CB, and CR mounting options, retaining a focused set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX475-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX475-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 475 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 SAIJ50BX475-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×475 | 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 SAIJ50BX475-75S Is Used
Machine Changeover
Dial in the exact 400-475 mm end position for new product sizes without swapping out the entire cylinder or adding external stopper blocks.
Variable Diverting
Adjust the retract stroke on the fly to handle different package lengths on a sorting line, ensuring precise physical contact.
End-Position Tuning
Fine-tune the final approach distance during setup to compensate for mechanical wear or sensor drift over time.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX475-75S the Right Cylinder?
Choose this 50 mm bore when an application requires moderate thrust (982 N at 0.5 MPa) but a highly flexible end-stop. The 75 mm adjustment window is ideal for product changeovers on a line, whereas a fixed-stroke SAI cylinder would require physical shimming or replacement. If your process needs less force, step down to a 40 mm bore (628 N); if you need heavier clamping, step up to a 63 mm bore (1559 N).
Because the nominal stroke is 475 mm, the M16x1.5 rod should be guided externally to prevent excessive side-loading and premature seal wear. Remember that the rear adjuster acts only as a travel stop to aid deceleration; it does not hold the load without live air. For true pneumatic locking, 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 SAIJ50BX475-75S FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. It operates at speeds between 30 and 800 mm/s.
A rear-mounted adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke anywhere within the 400-475 mm window. It only sets the travel end and does not lock the load without continuous air pressure.
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