Airtac SAIJ50 Adjustable Cylinder SAIJ50AX145-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX145-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 145mm 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
- Stroke145 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 SAIJ50AX145-30S
The AirTAC SAIJ50X145-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and features a 145mm nominal stroke that can be fine-tuned down by up to 30mm, giving you a precise 115-145mm usable travel window during commissioning.
This variant includes an -S magnet for position sensing alongside a SUS420J2 stainless steel rod. It uses PT tapered ports and retains the standard extruded aluminum barrel with sensor grooves on both sides for straightforward CMSE or DMSE switch installation.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX145-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX145-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 145 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 SAIJ50AX145-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×145 | 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 SAIJ50AX145-30S Is Used
Product Changeovers
Dial in the 115-145mm travel window on the fly to accommodate different package lengths on a packaging line without changing out the cylinder.
Machine Setup
Fine-tune the retract end-position during initial commissioning to achieve precise mechanical alignment without machining custom external spacers.
Variable End Stops
Utilize the rear screw to establish a hard mechanical stop for delicate pressing or clamping tasks that require exact positional limits.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX145-30S the Right Cylinder?
Choose this 50mm bore when an application requires moderate force, stepping up from the 40mm bore that provides 628N push at 0.5 MPa. The adjustable stroke is perfect for product changeovers, allowing you to shift the end-stop without physically swapping the cylinder or adding external stops. To match this ISO 15552 replacement exactly, specify the 50mm bore, 145mm stroke, 30mm adjustment, PT port thread, and the -S magnet.
Because the 145mm stroke is under the 300mm threshold, side-load stress is manageable, though external guides are still recommended for optimal cylinder longevity. Note that the rear adjuster acts strictly as a travel stop and does not lock the load; for true load-holding without live air pressure, consider the SAIL or BSAI series.
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 SAIJ50AX145-30S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. If higher pressure is utilized, it can deliver up to 1374N push force at 0.7 MPa.
The rear adjuster screw allows you to reduce the 145mm nominal stroke by up to 30mm, creating a usable travel window of 115-145mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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