This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD100X300S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD100X300S 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-SUD100X300S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300S is a double-acting profile-type standard cylinder with a Ø100mm bore and 300mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD100X300S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X300S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300S
The AirTAC B04-SUD100X300S is a double-acting, double-rod profile cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SUD100X300S, mechanically identical in every spec. A rod exits both ends on one piston, meaning both faces use the rod-side area and push and pull force are equal both ways (3681 N at 0.5 MPa). The extruded aluminium profile barrel is shorter than an ISO 15552 cylinder of the same 100 mm bore. This discontinued model uses a 1/2 inch port, M20x1.5 rod thread, and legacy CS1-B/DS1-B sensors.
As this SUD series is discontinued, the exact drop-in replacement is the SAUD100X300S, retaining the same bore, stroke, equal force, 1/2 inch port, and FA/LB mounting. The SAUD upgrades to current CMSG/DMSG/EMSG sensors. Two non-obvious benefits of this double-rod design are anti-rotation stability and the ability to drive two tools simultaneously from one piston. For buyers sizing components, the computed safe working load is approximately 2209 N (about 60% of the 3681 N at 0.5 MPa figure), and the vertical lift capacity is about 188 kg with a 2:1 margin. A plain cylinder does not hold loads on air loss; the 29 mm adjustable cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X300S |
| Bore size | Ø100 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD100X300S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The B04-SAUD100X300S 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-SUD100X300S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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-SUD100X300S Is Used
Excavator Linkage Control
Drives dual tooling on heavy-equipment attachments with equal push and pull force, leveraging the anti-rotation properties of the double-rod design for stable construction-machinery operation.
Concrete Pump Actuation
Provides synchronized movement from both rod ends in abrasive construction environments, utilizing the robust 100 mm bore profile body to handle high-cycle shifting duties.
Crane Load Guidance
Uses the rear rod extension to carry a sensor cam for position feedback, ensuring precise alignment of heavy structural components without rotational drift.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300S with the B04-SAUD100X300S
To replace the discontinued B04-SUD100X300S, order the drop-in SAUD100X300S, which matches the 100 mm bore, 300 mm stroke, 1/2 inch port, and FA/LB mounting exactly. When sizing both ways, verify your force requirements against the equal both ways output (3681 N at 0.5 MPa, 5153 N at 0.7 MPa, 6626 N at 0.9 MPa) and check neighbouring bores if you need to scale up or down. A double rod is right when you need anti-rotation stability or a back rod to carry a sensor cam. Because this unit has a 300 mm stroke, add external guides to manage side-load and rod-bending forces. Note the -S sensor change: the legacy CS1-B/DS1-B switches used here are replaced by CMSG/DMSG/EMSG sensors on the SAUD.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X300S
- ✓ 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-SUD100X300S FAQ
Yes, the B04-SUD100X300S is discontinued. The B04- prefix simply marks it as the construction-machinery dedicated variant of the base SUD100X300S. The exact drop-in replacement is the SAUD100X300S, which matches the bore, stroke, 1/2 inch port, and force exactly, but uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
Because it is a double-rod cylinder, force is equal both ways and never quotes a larger single-rod push value. It delivers 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. The bore size dictates a 1/2 inch port, it features a 29 mm adjustable cushion at each end, and operates at speeds of 30-800 mm/s.
Related AirTAC SAU Cylinders
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