This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD100X350S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD100X350S 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-SUD100X350S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X350S is a double-acting profile-type standard cylinder with a Ø100mm bore and 350mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD100X350S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke350 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X350S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X350S
The AirTAC B04-SUD100X350S is a discontinued double-acting profile cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the SUD100X350S, mechanically identical to the base model. A rod exits both ends of the single piston, meaning both faces use the rod-side area and push/pull force is equal both ways (3681 N at 0.5 MPa, 5153 N at 0.7 MPa, 6626 N at 0.9 MPa). The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same 100 mm bore, features a 1/2 inch air port, and uses adjustable 29 mm cushions at each end. This unit is end-of-life and the exact drop-in replacement is the SAUD100X350S.
Because force is equal both ways, the back rod can carry a sensor cam or drive a second tool without force loss. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches; the SAUD replacement uses current CMSG/DMSG/EMSG sensors. For buyers sizing payloads, the safe working load is roughly 2209 N (about 60 percent of the 0.5 MPa figure) and the vertical lift capacity is about 188 kg with a 2:1 margin. 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-SUD100X350S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X350S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X350S |
| Bore size | Ø100 mm |
| Stroke | 350 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-SAUD100X350S 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-SAUD100X350S 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-SUD100X350S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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-SUD100X350S Is Used
Excavator Linkage Actuation
Drives synchronized heavy-equipment covers or doors on construction machinery where the B04- prefix indicates dedicated deployment, using the back rod for a cam.
Crusher Feed Pusher
Pushes material evenly in both directions in a compact profile barrel, fitting tight construction-equipment frames without needing a larger ISO 15552 body.
Dual-Tool Tensioning
Simultaneously tensions two belts or tracks from a single piston, leveraging the equal both ways force to ensure balanced clamping on heavy machinery.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X350S with the B04-SAUD100X350S
To replace the discontinued B04-SUD100X350S, order the drop-in SAUD100X350S, which matches the 100 mm bore, 350 mm stroke, 1/2 inch port, M20x1.5 rod thread, and FA/LB mounting. When sizing both ways, verify your payload against the equal both ways force (3681 N at 0.5 MPa) and check neighbor bores if you need more or less capacity. Choose a double-rod cylinder when you need anti-rotation stability, a back rod to carry a sensor cam, or to drive two tools simultaneously. For the -S magnet option, upgrade from legacy CS1-B/DS1-B sensors to CMSG/DMSG/EMSG on the SAU. At 350 mm stroke, add external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X350S
- ✓ 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-SUD100X350S FAQ
Yes, the B04-SUD100X350S is discontinued. The B04- prefix marks it as the construction-machinery dedicated variant of the SUD100X350S, mechanically identical to the base model. The exact drop-in replacement is the SAUD100X350S, which matches the 100 mm bore, 350 mm stroke, 1/2 inch port, and FA/LB mounting.
Because it is a double-rod cylinder, force is equal both ways: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. The bore is 100 mm, the air port is 1/2 inch, the rod thread is M20x1.5, and it has a 29 mm adjustable cushion at each end.
Related AirTAC SAU Cylinders
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