Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 500mm 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
- Stroke500 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 SAIJ50BX500-40S
The AirTAC SAIJ50X500-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 500 mm nominal stroke to a 460 mm minimum. This 40 mm adjustment window is ideal for dialing in exact end positions during machine commissioning or product changeovers without swapping hardware. It delivers 982 N push thrust at 0.5 MPa and uses a SUS304 stainless steel rod for superior corrosion resistance.
The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for position detection via AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop to set the travel end; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 500 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 SAIJ50BX500-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×500 | 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 SAIJ50BX500-40S Is Used
Product Changeover
Dial in the 460-500 mm travel window to handle varying package sizes on a packaging line without adding external stops.
Commissioning Calibration
Fine-tune the exact retract end position during machine setup to ensure precise alignment without machining spacers.
Press Fitments
Apply up to 982 N of push force at 0.5 MPa for light assembly operations while adjusting the stroke to match different part heights.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-40S the Right Cylinder?
Choose this 50 mm bore when your application requires the 982 N push force at 0.5 MPa, stepping up from the 40 mm bore's 628 N rating for heavier payloads. The adjustable stroke is preferred over a fixed SAI cylinder when you need a variable end-stop to accommodate varying product sizes on a single line.
Because the 500 mm stroke is substantial, the 20 mm rod and M16x1.5 thread provide a robust interface, but long unsupported strokes still require an external guide to prevent excessive side-loading. This SAIJ50X500-40-S configuration features PT tapered ports, a SUS304 rod, and a magnet for CMSE/DMSE sensors. It supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ50BX500-40S FAQ
At 0.5 MPa operating pressure, the 50 mm bore provides 982 N of push thrust and 825 N of pull thrust. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The nominal stroke is 500 mm, but the rear adjuster allows you to shorten the effective travel by up to 40 mm. This creates a usable adjustable travel window of 460 to 500 mm.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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