Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S
The AirTAC Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S is a genuine double-acting profile-type standard air cylinder with a Ø63mm bore and 55mm stroke, 3/8" air ports and adjustable end cushioning. Its hard-anodized aluminum-profile barrel is shorter than an ISO 15552 cylinder of the same bore, and it shares SC-series mounting accessories.
- BoreØ63 mm
- Stroke55 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 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 SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S
The AirTAC SAUJ63X55-20S is a double-acting, single-rod profile cylinder with an on-site extend stroke adjustment window of 20 mm. You can trim the nominal 55 mm stroke down to a 35 mm working length via the external stop screw. It features a 63 mm bore, a 3/8" port, and a built-in piston magnet for position sensing.
This compact extruded-aluminum body is shorter than an ISO 15552 cylinder of the same bore. It delivers a 1559 N push force at 0.5 MPa, giving a safe working load of roughly 935 N or a 79 kg vertical lift with a 2:1 margin. The -S suffix enables CMSG, DMSG, or EMSG switches, while Viton H seals can raise the operating temperature to 150 C.
Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S Technical Specifications
| Model | Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø63 mm |
| Stroke | 55 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| 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, 21 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAU series datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G (BSPP). A high-temperature seal (0-150 °C) is available.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×55 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAU-family variants: SAUD (double rod), SAUJ (adjustable stroke), SAUF (with built-in solenoid valve), and SAU-S with built-in magnet. Seals: TPU (blank) / Viton H / NBR N. Sensor switches: CMSG / DMSG / EMSG.
Where the Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S Is Used
Press Fit Tuning
Allows operators to dial in the exact 35 to 55 mm extend position for inserting delicate bearings without bottoming out the tooling.
Dynamic Diverters
Provides adjustable pusher length for routing varying package sizes on a packaging line without swapping the entire actuator.
Pallet Stops
Sets a precise physical end-stop for pallets on a roller bed, fine-tuning the halt position by up to 20 mm during commissioning.
Is the Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S the Right Cylinder?
Size this 63 mm bore against its neighbors: a 50 mm bore gives 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. Choose the SAUJ over a fixed SAU when your assembly requires minor extend length tuning without buying a new cylinder. The 20 mm adjust window is ideal for final machine timing. It supports basic, FA, and LB mounts compatible with the AirTAC SC series. The -S magnet allows electronic sensor mounting. For this 55 mm stroke, side-load is minimal, but always guide the load externally on longer strokes.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/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 — same as SC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAUJ63 Adjustable Pneumatic Cylinder SAUJ63X55-20S FAQ
At 0.5 MPa it pushes 1559 N and pulls 1402 N. Push force is 2182 N at 0.7 MPa and 2805 N at 0.9 MPa, with a theoretical max of 318 kgf at 1.0 MPa. The nominal extend stroke is 55 mm, and the external stop screw lets you shorten it by up to 20 mm on-site, yielding a usable range of 35 to 55 mm.
The external stop screw physically limits the piston extension to set the end position, but it is not a load lock. The cylinder drifts on air loss, and the air cushion only decelerates the piston near the end. For load holding, use an external rod lock or pilot-operated check valve. The -S suffix denotes a built-in magnet for mounting CMSG, DMSG, or EMSG switches.
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