Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 850mm 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
- Stroke850 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 SAIJ50BX850-50S
The AirTAC SAIJ50X850-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, providing an 800 to 850 mm usable travel window for precise end-position tuning. It delivers 982 N of push force at 0.5 MPa and utilizes a SUS304 stainless steel rod for superior corrosion resistance.
Equipped with a magnet for CMSE and DMSE sensors, this model integrates dual-sided sensor grooves on its extruded aluminum barrel. The PT tapered port threads ensure a tight pneumatic connection, while the built-in variable air cushions at both ends manage deceleration across its 30-800 mm/s speed range.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 850 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 SAIJ50BX850-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×850 | 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 SAIJ50BX850-50S Is Used
Changeover Calibration
Dial in the exact 800 to 850 mm end-stop during machine setup for different product sizes without disassembling the pneumatic rig.
Variable Transfer Stops
Adjust the retract position on the fly to handle varying package lengths on a packaging line, ensuring precise indexing.
Long-Stroke Positioning
Fine-tune the final approach of a long-travel actuator to guarantee component placement accuracy within a 50 mm window.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX850-50S the Right Cylinder?
Choose this 50 mm bore when an application requires 982 N of push force at 0.5 MPa but demands on-site stroke flexibility rather than a fixed 850 mm length. The rear adjuster allows you to dial back the travel by up to 50 mm during commissioning or product changeover without swapping the cylinder or adding external stops. Because the stroke is 850 mm, an external guide is highly recommended to prevent excessive side-loading on the rod.
For load-holding requirements without live air pressure, note that the rear adjuster functions strictly as a travel stop, not a lock or brake. You would need to look at the SAIL or BSAI series, or an external rod lock, for true position holding. This SAIJ model uses the reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR options, and is dimensionally interchangeable per ISO 15552.
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 SAIJ50BX850-50S FAQ
The rear adjuster acts as an external stopper that lets you shorten the effective stroke by up to 50 mm. This provides a usable travel window of 800 to 850 mm, allowing you to fine-tune the end position at commissioning without replacing the cylinder.
At 0.5 MPa, the SAIJ50X850-50-S generates 982 N of push force and 825 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 200 kgf of push force.
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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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