Airtac SAIJ50 Adjustable Cylinder SAIJ50AX650-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX650-30S 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 SAIJ50AX650-30S
The AirTAC SAIJ50X650-30-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 650mm nominal stroke that can be fine-tuned down by up to 30mm, creating a precise 620-650mm usable travel window. This built-in adjustability allows you to dial in the retract end position during commissioning without adding external stopper blocks.
This specific configuration includes an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and a magnet (-S) for position sensing. The extruded aluminum barrel houses sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. Fluid supply is routed through PT tapered ports, and the standard cushioning is adjustable at both ends to protect the mechanism.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX650-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX650-30S |
|---|---|
| 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 SAIJ50AX650-30S
| 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 SAIJ50AX650-30S Is Used
Product Changeover
Dial in the 620-650mm retract position during format size changes on a packaging line without physically replacing the actuator.
End-Stop Tuning
Fine-tune the final resting position of a tooling head at machine commissioning to avoid mechanical hard stops.
Long-Stroke Handling
Move parts along a conveyor at 30-800 mm/s while using the rear adjuster to set the precise 650mm maximum extension limit.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX650-30S the Right Cylinder?
Choose this 50mm bore when an application requires approximately 982N push force at 0.5 MPa, stepping up from a 40mm bore (628N) or down from a 63mm bore (1559N). An adjustable stroke is ideal for product changeovers on a line, letting you shift the end-stop by up to 30mm without swapping the cylinder. For fixed travel needs, a standard SAI cylinder is sufficient. To replace this unit, match the 50mm bore, 650mm stroke, 30mm adjustment, PT ports, SUS420J2 rod, and -S magnet.
Because the 650mm stroke is relatively long, the 20mm piston rod should be guided externally to prevent excessive side-loading and premature seal wear. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ50AX650-30S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At a maximum 1.0 MPa pressure, it achieves up to 200 kgf.
The rear adjuster screw lets you shorten the effective stroke by up to 30mm from the 650mm nominal length, providing a usable travel window of 620-650mm. It functions as a physical stop and does not lock the load without continuous air pressure.
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