Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S
The AirTAC B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 400mm 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.
- BoreØ80 mm
- Stroke400 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 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 B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S
The B04-SAUD80X400S is an AirTAC double-acting, double-rod profile cylinder. The B04- prefix marks this as the construction-machinery dedicated variant of the SAUD80X400S, mechanically identical to the base model. A rod exits both ends, meaning push and pull forces are equal at 2268 N each way at 0.5 MPa. The extruded aluminum profile barrel makes it shorter than an ISO 15552 cylinder of the same bore.
This 80mm bore unit features a 25mm rod, M20x1.5 rod thread, and a 3/8" port. The built-in magnet (-S) supports CMSG, DMSG, or EMSG switches. Viton H seals can raise the operating temperature to 150 C.
Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S Technical Specifications
| Model | Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| 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, 28 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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 B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S Is Used
Excavator Actuation
Drives synchronized secondary attachments on construction machinery where equal push and pull force is mandatory.
Twin-Tool Pressing
Operates dual forming tools simultaneously from both rod ends, ensuring perfectly balanced pressing strokes.
Back-End Sensing
Uses the protruding rear rod to trip a CMSG switch cam, providing precise position feedback in tight machine bays.
Is the Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S the Right Cylinder?
Select this 80mm bore (2268 N at 0.5 MPa) for heavy equipment needing equal bidirectional thrust. Step down to the 63mm bore (1402 N) for lighter loads, or up to the 100mm bore (3681 N) for maximum force. A double rod is ideal for anti-rotation guidance, driving twin tooling, or mounting a sensor cam on the back rod. Mounting is limited to Basic, FA, and LB styles (compatible with the AirTAC SC series). For the 400mm stroke, use external guides to prevent rod bending under side loads. Note that a plain cylinder drifts without live air; use an external rod lock for load holding.
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 B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD80X400S FAQ
This 80mm bore cylinder has a 3/8" port and generates equal force in both directions: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The B04- prefix simply denotes the construction-machinery dedicated variant, sharing the exact same physical specs as the SAUD80X400S.
The dual-rod design provides anti-rotation stability and allows a switch cam on the back rod. A plain cylinder does not hold loads on air loss; the adjustable 28mm cushions only decelerate near stroke ends. For secure holding, install an external rod lock or pilot-operated check valve.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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