Airtac SAIJ50 Adjustable Cylinder SAIJ50BX650-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX650-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 650mm 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
- Stroke650 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 SAIJ50BX650-50S
The AirTAC SAIJ50X650-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 600 to 650 mm without adding external stops. Delivering 982 N of push force at 0.5 MPa, it uses a PT tapered port and a SUS304 stainless steel rod for superior corrosion resistance.
This model includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic switches mounted into the dual-side sensor grooves on the extruded aluminum barrel. The rear adjustment mechanism acts purely as a travel stop to set the end position and cannot hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX650-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX650-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 650 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 SAIJ50BX650-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×650 | 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 SAIJ50BX650-50S Is Used
Variable End-Stop Tuning
Dial in the exact retraction point within the 600-650 mm window during machine commissioning to accommodate varying material thicknesses without external stopper blocks.
Product Size Changeover
Quickly adjust the stroke end-position on packaging lines when switching between different carton dimensions, minimizing downtime between production runs.
Long-Stroke Alignment
Leverage the SUS304 stainless steel rod for corrosion resistance in processing environments while setting precise travel limits for long-throw pushing tasks.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX650-50S the Right Cylinder?
Choose this 50 mm bore when an application requires precise variable end-stops during machine setup or product changeover, stepping up from a 40 mm bore that provides 628 N of push force at 0.5 MPa. The integrated 50 mm adjustment screw prevents the need to swap cylinders for minor position trimming. For any load-holding requirements without live air, a plain SAIJ is insufficient; consider an AirTAC SAIL pilot-operated lock or BSAI clamp-lock instead.
Because this 650 mm stroke is relatively long, the 20 mm rod diameter and M16x1.5 thread will still experience leverage forces; an external guide is recommended to prevent excessive side-loading. This SKU is dimensionally interchangeable with ISO 15552 cylinders and uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ50BX650-50S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. The operational speed range is 30-800 mm/s.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective stroke by up to 50 mm, creating a usable travel window of 600 to 650 mm. It is a travel stop, not a lock, and cannot hold a load without continuous 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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