This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD100X50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD100X50S 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-SUD100X50S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50S 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-SAUD100X50S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X50S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50S
The AirTAC B04-SUD100X50S is a discontinued double-acting double-rod profile cylinder. The leading B04- prefix marks this as a construction-machinery dedicated variant of the base SUD100X50S, mechanically identical in its 100mm bore, 50mm stroke, and 1/2 inch port. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. The exact drop-in replacement is the SAUD100X50S, retaining the same body, force, and FA/LB mounting.
This unit provides equal-both-ways force which prevents rod drift and allows the back rod to carry a sensor cam for legacy CS1-B/DS1-B switches (the SAUD replacement uses current CMSG/DMSG/EMSG sensors). With a 0.5 MPa input, the safe working load is about 2209 N (60 percent of force), yielding a 188 kg vertical lift with a 2:1 margin. Note that 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-SUD100X50S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X50S |
| 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-SAUD100X50S 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-SAUD100X50S 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-SUD100X50S
| 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-SUD100X50S Is Used
Excavator Linkage Actuation
Drives dual-tool mechanisms on heavy equipment where the B04- prefix indicates construction-machinery dedication, utilizing equal both ways force to push and pull hydraulic-like loads reliably.
Crusher Feed Sync
Synchronizes heavy material flow on aggregate conveyors using the back rod to carry a sensor cam, ensuring precise timing in dusty construction environments.
Heavy Pallet Transfer
Pushes and pulls loaded pallets with equal 3681 N force at 0.5 MPa, leveraging the anti-rotation stability of the double-rod design to prevent binding in tight machinery frames.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X50S with the B04-SAUD100X50S
To replace the discontinued B04-SUD100X50S, order the drop-in SAUD100X50S, which matches the 100mm bore, 50mm stroke, 1/2 inch port, M20x1.5 rod thread, and FA/LB mounting. When sizing both ways, verify the equal push/pull force fits your load, stepping to neighbouring bores if margins are tight. Choose a double-rod cylinder when you need anti-rotation stability or need to drive two tools simultaneously. If your SUD has the -S magnet, upgrade your switches from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG. For stroke lengths of 300mm or greater, account for side-load deflection on the extended rod.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X50S
- ✓ 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-SUD100X50S FAQ
Yes, the B04-SUD100X50S is discontinued. The B04- prefix marks it as a construction-machinery dedicated variant of the base SUD100X50S. The exact drop-in replacement is the SAUD100X50S, which matches the 100mm bore, 50mm stroke, 1/2 inch port, and FA/LB mounting, but uses current CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B.
This double-acting double-rod cylinder has equal force both ways: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. It features a 100mm bore, a 1/2 inch port, a 25mm rod, and a 29 mm adjustable cushion at each end. The safe working load is about 2209 N, allowing a 188 kg vertical lift with a 2:1 margin.
Related AirTAC SAU Cylinders
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