Airtac SAIJ50 Adjustable Cylinder SAIJ50AX175-20S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX175-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 175mm 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
- Stroke175 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 SAIJ50AX175-20S
The AirTAC SAIJ50X175-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the external stopper screw, you can fine-tune the effective travel window down from the 175 mm nominal stroke to a precise 155-175 mm range, eliminating the need to swap components during product changeovers. This bore size delivers a robust 982 N push force at 0.5 MPa, making it well-suited for moderate-duty handling tasks.
Equipped with a magnet for position sensing, this variant utilizes SUS420J2 stainless steel for the rod (material code A) and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, accepting AirTAC CMSE reed and DMSE electronic switches. Remember that the rear adjuster acts purely as a mechanical stop for end-position tuning; it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX175-20S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX175-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 175 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 SAIJ50AX175-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×175 | 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 SAIJ50AX175-20S Is Used
End-Position Calibration
Dial in the exact retraction point within the 155-175 mm window during machine commissioning without physically swapping the cylinder or adding external mechanical stops.
Product Size Changeover
Quickly adapt the stroke end-point on packaging lines when switching between different product lengths, utilizing the 20 mm adjustment range to maintain precise spacing.
Moderate-Force Positioning
Leverage the 982 N push force at 0.5 MPa to push or lift workpieces into fixtures, relying on the SUS420J2 stainless rod for durability in standard industrial environments.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX175-20S the Right Cylinder?
Select this 50 mm bore when your application requires 982 N of push thrust at 0.5 MPa and benefits from on-the-fly end-stop calibration. If your setup demands greater force, stepping up to the 63 mm bore yields 1559 N at the same pressure, whereas dropping to a 40 mm bore provides 628 N for lighter loads. The adjustable stroke is ideal for machine setups requiring exact positioning without adding external stops, contrasting with the fixed-travel standard SAI series.
For a drop-in ISO 15552 replacement, match the 50 mm bore, 175 mm stroke, 20 mm adjustment range, PT port threads, and the -S magnet requirement. Because the 175 mm stroke is relatively short, side-load risks are minimal, but always ensure proper guiding for any unsupported loads. If your process requires true load holding without air pressure, consider the SAIL pneumatic lock series or an external rod lock instead of relying on this cylinder's stopper.
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 SAIJ50AX175-20S 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 standard speed range for this bore size is 30-800 mm/s, regulated via the G1/4 ports.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 175 mm nominal stroke down to a minimum of 155 mm. This creates a 155-175 mm usable window for fine-tuning end positions at commissioning, but it does not lock the load without live air pressure.
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