This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD100X50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD100X50 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-SUD100X50
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50 is a double-acting profile-type standard cylinder with a Ø100mm bore and 50mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD100X50, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X50
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50
The AirTAC B04-SUD100X50 is a double-acting double-rod profile cylinder where the B04- prefix designates it as a construction-machinery dedicated variant, mechanically identical to the standard SUD100X50. Because a rod exits both ends on a single piston, the push and pull forces are equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. This model is discontinued and the direct drop-in replacement is the SAUD100X50, which retains the exact 100mm bore, 50mm stroke, 1/2" port, and FA/LB mounting. The SAUD upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy version used CS1-B/DS1-B switches.
Buyers gain anti-rotation stability and the ability to drive two tools simultaneously from the twin M20x1.5 rod ends. A computed buyer insight from the 0.5 MPa rating shows a safe working load of roughly 2209 N (60% of force), translating to a vertical lift capacity of about 188 kg with a 2:1 margin. Note that this specific SKU lacks a magnet (-S) and cannot accept magnetic switches. Furthermore, the 29mm adjustable air cushions only decelerate the piston near stroke end; they do not hold loads on air loss, so an external rod lock is required for suspended loads.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X50 |
| Bore size | Ø100 mm |
| Stroke | 50 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-SAUD100X50 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-SAUD100X50 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-SUD100X50
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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-SUD100X50 Is Used
Excavator Linkage Actuation
Drives dual-tool mechanisms on heavy equipment where equal push/pull force prevents linkage binding during repetitive digging cycles.
Crusher Blade Sync
Synchronizes opposing crushing jaws in demolition attachments, using the twin rods to maintain parallel alignment under high shock loads.
Vibratory Screen Tensioning
Applies balanced tension to construction site vibrating screens, leveraging the compact profile body to fit tight machinery frames.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50 with the B04-SAUD100X50
To replace the discontinued B04-SUD100X50, select the SAUD100X50 drop-in, which matches the 1/2" port, M20x1.5 rod thread, and 29mm cushion. Size both directions by verifying the equal-both-ways force fits your load, stepping to neighbour bores if margin is tight. Choose a double-rod cylinder when you need anti-rotation or a back rod to carry a sensor cam. Mounting is limited to Basic, FA, and LB (SC-series compatible only). Because this SKU is non-magnetic, you cannot use sensors; the SAUD upgrade supports CMSG/DMSG/EMSG switches. For strokes >=300mm, verify side-load limits to prevent guide wear. Never rely on the cushion for load-holding; add an external rod lock.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X50
- ✓ 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-SUD100X50 FAQ
Yes, the B04-SUD100X50 (construction-machinery dedicated SUD100X50) is discontinued. The exact drop-in replacement is the SAUD100X50, which shares the same 100mm bore, 50mm stroke, 1/2" port, and FA/LB mounting, but uses current CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B switches.
The 1/2" ported double-rod design provides equal force both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It features a 25mm rod with M20x1.5 threads, 29mm adjustable cushions, and operates at 30-800 mm/s.
Related AirTAC SAU Cylinders
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