This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD80X75S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD80X75S 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-SUD80X75S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75S 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-SAUD80X75S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD80X75S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75S
The B04-SUD80X75S is an AirTAC double-acting double-rod profile cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SUD80X75S, sharing identical specifications. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull 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 extruded aluminium profile barrel is shorter than an ISO 15552 cylinder of the same bore. This discontinued model features a 25 mm rod, M20x1.5 rod thread, 28 mm adjustable air cushions, a 3/8 inch port, and a built-in magnet for legacy CS1-B/DS1-B switches.
This SUD series is discontinued and the exact drop-in replacement is the SAUD80X75S, which retains the same bore, stroke, force, 3/8 inch port, and FA/LB mounting compatibility with the AirTAC SC series. The SAUD upgrades to current CMSG/DMSG/EMSG sensors and offers an SAUF built-in-valve variant the SU line lacked. For sizing, the equal-both-ways 2268 N force at 0.5 MPa yields a safe working load of roughly 1361 N (about 60% of the figure) and a vertical lift capacity of about 116 kg with a 2:1 margin. The double-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam or drive two tools simultaneously. Note that a plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD80X75S |
| 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-SAUD80X75S 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-SAUD80X75S 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-SUD80X75S
| 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-SUD80X75S Is Used
Excavator Linkage Control
Uses the equal-both-ways 4082 N force and anti-rotation double-rod stability to actuate auxiliary construction-machinery linkage panels without twist.
Heavy Equipment Grippers
Drives two opposing clamping tools simultaneously from one piston, leveraging the 25 mm twin rods for balanced grip on heavy equipment parts.
Crusher Feed Gates
Employs the back rod to carry a sensor cam for position feedback while the front rod opens and closes material feed gates in harsh machinery environments.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X75S with the B04-SAUD80X75S
To replace the discontinued B04-SUD80X75S, use the drop-in SAUD80X75S, which matches the 80 mm bore, 75 mm stroke, 3/8 inch port, and FA/LB mounting. When sizing both ways, verify the equal force (2268 N at 0.5 MPa) meets your needs, or step to neighbouring bores (63 mm or 100 mm) for different loads. Choose a double-rod cylinder when anti-rotation stability or driving two tools from one piston is required. If upgrading from the -S magnet, note the SAUD uses current CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B. For strokes of 300 mm or longer, carefully manage side-load alignment to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD80X75S
- ✓ 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-SUD80X75S FAQ
Yes, the B04-SUD80X75S is discontinued. The exact drop-in replacement is the SAUD80X75S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SUD80X75S, so the SAUD matches it exactly on 80 mm bore, 75 mm stroke, force, 3/8 inch port, and FA/LB mounting. The SAUD also upgrades to current CMSG/DMSG/EMSG sensors.
Because it is a double-rod cylinder, the push and pull force are equal both ways: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The 80 mm bore dictates a 3/8 inch port. The safe working load is approximately 1361 N (60% of the 0.5 MPa figure), allowing a vertical lift of about 116 kg with a 2:1 margin.
Related AirTAC SAU Cylinders
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