This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD80X700S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD80X700S 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-SUD80X700S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700S is a double-acting profile-type standard cylinder with a Ø80mm bore and 700mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD80X700S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke700 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD80X700S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700S
The AirTAC B04-SUD80X700S is a double-acting, double-rod profile cylinder where the B04- prefix designates it as the construction-machinery dedicated variant of the SUD80X700S, sharing identical specifications. Because a rod exits both ends on a single piston, the push and pull forces are perfectly equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The 80mm bore features a 25mm piston rod, M20x1.5 rod-end thread, and a 3/8" port. This discontinued model includes a built-in piston magnet for legacy CS1-B/DS1-B switches. The drop-in replacement is the SAUD80X700S, which retains the exact bore, stroke, force, port, and FA/LB mounting compatibility.
With a 700mm stroke, external guides are recommended to prevent rod bending and manage side loads. The double-rod design prevents rotation and can drive two tools simultaneously, while the rear rod acts as a sensor cam. For buyers, the safe working load is approximately 1361 N (60% of the 2268 N @0.5 MPa figure), allowing a vertical lift of about 116 kg with a 2:1 margin. Note that the air cushion only decelerates near stroke end; an external rod lock or pilot-operated check valve is required to hold loads on air loss.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD80X700S |
| Bore size | Ø80 mm |
| Stroke | 700 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-SAUD80X700S 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-SAUD80X700S 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-SUD80X700S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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-SUD80X700S Is Used
Excavator Actuation
Drives synchronized heavy-equipment panels on construction machinery where the B04- prefix indicates dedicated deployment, utilizing equal both-ways force.
Dual-Tool Pusher
Simultaneously drives two separate workpieces from opposite ends using the dual-rod layout, preventing rotation during high-speed transfer.
Guided Lifting Frame
Lifts loads vertically up to 116 kg with a 2:1 margin, relying on external guides to handle side loads across the 700mm stroke.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700S with the B04-SAUD80X700S
To replace the discontinued B04-SUD80X700S, select the SAUD80X700S, which is a mechanical drop-in keeping the 80mm bore, 700mm stroke, 3/8" port, and FA/LB mounting identical. When sizing both ways, verify your force requirements against the 2268 N @0.5 MPa safe baseline or step up to a 100mm bore if higher force is needed. A double rod is the right choice when you need anti-rotation, a rear sensor cam, or dual-tool driving. Because this unit has an -S magnet, you must upgrade from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors for the SAUD. For this 700mm stroke, ensure external guides are used to mitigate rod bending and side-load stress.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD80X700S
- ✓ 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-SUD80X700S FAQ
Yes, the B04-SUD80X700S is discontinued. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SUD80X700S. The exact drop-in replacement is the SAUD80X700S, which matches the 80mm bore, 700mm stroke, 3/8" port, and FA/LB mounting. You must upgrade the -S magnet switches from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors.
The double-rod design provides equal force both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. Based on the 0.5 MPa figure, the safe working load is approximately 1361 N, allowing a vertical lift of about 116 kg with a 2:1 margin. The cylinder operates at 0.15-1.0 MPa with a speed of 30-800 mm/s.
Related AirTAC SAU Cylinders
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