Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD40X800S
The AirTAC B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD40X800S is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 800mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke800 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD40X800S
The B04-SAUD40X800S is a double-acting, double-rod profile cylinder. The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the SAUD40X800S, mechanically identical to the base model. A rod exits both ends on one piston, meaning both faces use the rod-side area. Output force is equal both ways, delivering 528 N each way at 0.5 MPa through its 1/4" port.
This extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore. The rear protruding rod is perfect for carrying a sensor cam or driving twin tools. With the -S option, a built-in magnet allows CMSG, DMSG, or EMSG switches to track position. Viton H seals can raise the operating temperature to 150 C.
Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD40X800S Technical Specifications
| Model | Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD40X800S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 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-SAUD40X800S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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-SAUD40X800S Is Used
Excavator Panel Pusher
Uses the equal both-ways force to extend and retract heavy cab panels on earthmoving equipment without rotational twist.
Crusher Feed Diverter
Synchronized twin tools on the dual rods reliably route aggregate streams on harsh mining and construction sites.
Boom Arm Sensor Cam
The rear protruding rod carries a switch cam to confirm stroke position on heavy machinery within tight spaces.
Is the Airtac B04-SAUD Construction Machinery Dedicated Standard Cylinder B04-SAUD40X800S the Right Cylinder?
When sizing this 40 mm bore, compare it both ways: step down to a 32 mm bore for 345 N, or up to a 50 mm bore for 825 N at 0.5 MPa. A double rod is the right call when you need anti-rotation guidance, synchronized twin tooling, or back-end switch tripping. Mounting is limited to Basic, FA flange, and LB foot styles, matching the AirTAC SC series. Because this unit has an 800 mm stroke, external guides are strongly recommended to prevent rod bending and manage side loads. The -S magnet enables position sensing.
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-SAUD40X800S FAQ
The B04- prefix marks this as the construction-machinery dedicated variant of the SAUD40X800S, sharing identical specs. Force is equal both ways: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. It never quotes a larger single-rod push value.
No, a plain cylinder drifts on air loss or when the valve is centered. The adjustable 21 mm air cushions only decelerate the piston near stroke end. For a held load, install an external rod lock or a pilot-operated check valve.
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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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