Airtac SAIJ50 Adjustable Cylinder SAIJ50AX200-20S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX200-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 200mm 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
- Stroke200 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 SAIJ50AX200-20S
The AirTAC SAIJ50X200-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 20 mm adjustment range, creating a 180-200 mm usable travel window for precise end-position tuning. The 50 mm bore delivers 982 N of pull force at 0.5 MPa, making it suitable for moderate load handling.
This model features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports AirTAC CMSE reed and DMSE electronic switches. The rear adjuster acts as a travel stop for commissioning flexibility, not a lock.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX200-20S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX200-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 200 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 SAIJ50AX200-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 SAIJ50AX200-20S Is Used
Changeover Calibration
Dial in the 180-200 mm travel window during product size changes without swapping the cylinder or adding external stops.
End-Stop Tuning
Fine-tune the retract position at commissioning to perfect material feeding and clamping accuracy on the line.
Assembly Positioning
Adjust the stroke within the 20 mm window to compensate for mechanical wear or part tolerances over time.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX200-20S the Right Cylinder?
Choose this adjustable-stroke unit over a fixed SAI when your application requires variable end-stops or fine-tuning during machine setup and product changeovers. If you need slightly less force, the 40 mm bore yields 528 N pull at 0.5 MPa. For heavier loads, the 63 mm bore offers 1402 N. Remember that the rear adjuster only sets the travel end; it does not hold the load without live air. For fail-safe load holding, consider the SAIL or BSAI series.
This cylinder uses PT tapered port threads (G1/4) and supports the SAIJ mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It is dimensionally interchangeable per ISO 15552. The 20 mm rod thread (M16x1.5) handles side loads well, but any stroke of 300 mm or more requires an external guide to prevent rod deflection.
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 SAIJ50AX200-20S FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 200 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 200 mm nominal stroke by up to 20 mm. This creates a 180-200 mm usable travel window for precise end-position tuning without replacing the cylinder.
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