This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD100X300 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD100X300 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-SUD100X300
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300 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-SAUD100X300, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X300
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300
The B04-SUD100X300 is a double-acting, double-rod profile cylinder where the B04- prefix designates it as the construction-machinery dedicated variant of the base SUD100X300, sharing identical specifications. A rod exits both ends of the extruded aluminium barrel, meaning push and pull forces are equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. This model features a 100 mm bore, 25 mm piston rod, M20x1.5 rod thread, and a 1/2 inch port. This discontinued model is replaced by the drop-in SAUD100X300.
The double-rod architecture provides anti-rotation stability and allows the back rod to drive a second tool simultaneously. Based on the 3681 N @0.5 MPa output, the computed safe working load is approximately 2209 N, translating to a vertical lift capacity of about 188 kg with a 2:1 margin. The SAUD replacement retains the FA/LB mounting options but upgrades sensing to current CMSG/DMSG/EMSG sensors, whereas this legacy cylinder used CS1-B/DS1-B switches. Note this SKU lacks a magnet and cannot take a sensor.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X300 |
| 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-SAUD100X300 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-SAUD100X300 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-SUD100X300
| 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-SUD100X300 Is Used
Excavator Actuation
Drives dual opposing doors or heavy covers on construction machinery where equal push and pull force is required to handle soil and debris resistance.
Concrete Mold Press
Compresses concrete forms from both ends simultaneously, using the anti-rotation properties of the double rod to keep heavy molds perfectly aligned.
Heavy Equipment Coupler
Actuates a dual-clamp coupler on heavy equipment, using the back rod to trigger a secondary mechanical lock while the front rod engages the attachment.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X300 with the B04-SAUD100X300
To replace this discontinued cylinder, specify the SAUD100X300, 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 of 3681 N @0.5 MPa; if you need less force, step down to the 80 mm bore, or step up if you exceed the safe working load. Choose a double-rod design when you need anti-rotation resistance or must drive two tools from one piston. Because this is a non-magnetic SKU, you cannot mount reed switches; the SAUD upgrade uses CMSG/DMSG/EMSG sensors. For the 300 mm stroke, ensure external guides support side loads to prevent rod bending.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X300
- ✓ 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-SUD100X300 FAQ
Yes, the B04-SUD100X300 construction-machinery dedicated double-rod cylinder is discontinued. The exact drop-in replacement is the SAUD100X300, which shares the same 100 mm bore, 300 mm stroke, 1/2 inch port, and FA/LB mounting. The B04- prefix only denotes the construction industry application and does not change the physical specs.
Force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The safe working load is roughly 2209 N (about 188 kg vertical lift with a 2:1 margin). The cylinder cannot hold a load on air loss; the adjustable 29 mm cushion only decelerates the piston near stroke end. Use an external rod lock or pilot-operated check valve for held loads.
Related AirTAC SAU Cylinders
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