This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD80X75 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD80X75 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-SUD80X75
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75 is a double-acting profile-type standard cylinder with a Ø80mm bore and 75mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD80X75, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD80X75
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75
The AirTAC B04-SUD80X75 is a double-acting, double-rod profile cylinder where a rod exits both ends, generating equal force in both directions (2268 N at 0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the SUD80X75, mechanically identical to the base model with a 3/8 inch port and M20x1.5 rod thread. This discontinued profile barrel is shorter than an ISO 15552 cylinder of the same bore.
Because the second rod acts as an anti-rotation guide and can drive a second tool simultaneously, it is highly effective for heavy-equipment builders. The drop-in replacement is the SAUD80X75, which retains the exact bore, stroke, and FA/LB mounting. Buyers should note a safe working load of roughly 1361 N (about 60 percent of the 0.5 MPa force) and a vertical lift capacity of 116 kg with a 2:1 margin. Note this SKU lacks a magnet and cannot take a sensor.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD80X75 |
| Bore size | Ø80 mm |
| Stroke | 75 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-SAUD80X75 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-SAUD80X75 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-SUD80X75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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-SUD80X75 Is Used
Excavator Linkage Actuation
Provides equal both-ways force and anti-rotation stability for synchronized positioning of heavy-equipment control linkages on construction machinery.
Dual-Tool Synchronized Driving
Uses the second protruding rod to simultaneously drive a secondary mechanism or tool, saving space in compact machinery frames.
Heavy Equipment Guiding
The double-rod geometry prevents piston rotation during high-force pressing and clamping operations in rugged construction environments.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75 with the B04-SAUD80X75
To replace the discontinued B04-SUD80X75, use the SAUD80X75, which offers a true drop-in solution with identical 80 mm bore, 75 mm stroke, 3/8 inch port, and SC-series FA/LB mounting. When sizing both ways, verify your force requirements against the 2268 N at 0.5 MPa or 3175 N at 0.7 MPa equal both-ways output, or step to a neighbouring bore if margins are tight. A double rod is right when you need anti-rotation stability or must drive two tools from one piston. Because this SKU lacks a magnet, it cannot accept sensors; the SAUD upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For strokes of 300 mm or longer, carefully manage side-load alignment to prevent guide wear. A plain cylinder does not hold loads on air loss; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD80X75
- ✓ 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-SUD80X75 FAQ
Yes, the B04-SUD80X75 is discontinued. The exact drop-in replacement is the SAUD80X75. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SUD80X75, and the SAUD matches its bore, stroke, 3/8 inch port, and FA/LB mounting perfectly.
The bore is 80 mm with a 3/8 inch port. Because it is a double-rod cylinder, force is equal both ways: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The safe working load is approximately 1361 N.
Related AirTAC SAU Cylinders
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