This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD80X800S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD80X800S in place of this model. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S is a double-acting profile-type standard cylinder with a Ø80mm bore and 800mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD80X800S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke800 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD80X800S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S
The AirTAC B04-SUD80X800S is a double-acting, double-rod profile cylinder where the B04- prefix designates it as the construction-machinery dedicated variant of the base SUD80X800S, mechanically identical in bore, stroke, and force. A rod exits both ends on a single piston, meaning push and pull force are equal both ways at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore. This bore features a 25 mm rod, M20x1.5 rod-end thread, and a 3/8" port.
This discontinued model is replaced by the drop-in SAUD80X800S, which retains the exact bore, stroke, force, port, and FA/LB mounting. The SAUD upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy SUD used CS1-B/DS1-B switches. The dual-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam while driving two tools. For the 2268 N @0.5 MPa force, the safe working load is roughly 1361 N, and the vertical lift capacity is about 116 kg with a 2:1 margin.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD80X800S |
| Bore size | Ø80 mm |
| Stroke | 800 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD80X800S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The B04-SAUD80X800S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×800 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Where the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S Is Used
Excavator Actuation
Drives dual-tool mechanisms on heavy equipment where the B04- construction-machinery prefix ensures dedicated integration, using equal-both-ways force for stable push and pull operations.
Anti-Rotation Gripper
Powers a synchronized clamping fixture on a mobile crane, using the twin rods to prevent twist and carry a rear sensor cam for precise positioning in dusty environments.
Heavy-Equipment Lift
Actuates a lifting platform on a construction vehicle, utilizing the 116 kg vertical lift capacity at 0.5 MPa with a 2:1 margin for safe material handling.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S with the B04-SAUD80X800S
To replace the B04-SUD80X800S, use the drop-in SAUD80X800S, which matches the 80 mm bore, 800 mm stroke, 3/8" port, and FA/LB mounting. When sizing both ways, verify the equal-both-ways force fits your load, or step to neighbor bores (63 mm or 100 mm) to scale the 2268 N @0.5 MPa baseline. A double rod is right when you need anti-rotation stability or a rear rod to carry a sensor cam. The -S option uses legacy CS1-B/DS1-B switches, which must change to CMSG/DMSG/EMSG on the SAUD. Because the 800 mm stroke is long, add external guides to prevent rod bending and side-load damage. For held loads, use an external rod lock, as the air cushion only decelerates near stroke end and does not hold position on air loss.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD80X800S
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X800S FAQ
Yes, the B04-SUD80X800S is discontinued. The exact drop-in replacement is the SAUD80X800S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the base SUD80X800S, so the SAUD matches the 80 mm bore, 800 mm stroke, 3/8" port, and FA/LB mounting perfectly. You only need to upgrade the legacy CS1-B/DS1-B sensors to the current CMSG/DMSG/EMSG switches on the SAUD.
Because it is a double-rod cylinder, the force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The operating speed ranges from 30-800 mm/s. It features a 25 mm rod, M20x1.5 thread, and a 28 mm adjustable air cushion at each end.
Related AirTAC SAU Cylinders
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