This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD100X450S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD100X450S 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-SUD100X450S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X450S is a double-acting profile-type standard cylinder with a Ø100mm bore and 450mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD100X450S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke450 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X450S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X450S
The AirTAC B04-SUD100X450S is a double-acting, double-rod profile cylinder where the B04- prefix designates it as the construction-machinery dedicated variant of the base SUD100X450S, mechanically identical in every spec. Because a rod exits both ends on the same piston, push and pull forces are equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The 100mm bore features a 25mm rod, M20x1.5 rod thread, and a 1/2" port. This discontinued legacy model is fully replaced by the drop-in SAUD100X450S.
The SAUD100X450S retains the exact bore, stroke, 1/2" port, and FA/LB mounting, but upgrades to current CMSG/DMSG/EMSG sensors instead of the original CS1-B/DS1-B switches. The dual-rod design provides anti-rotation stability and allows the back rod to drive a second tool or sensor cam. For a 450mm stroke, external guides are recommended to manage side loads. Based on the 0.5 MPa force, the safe working load is about 2209 N, allowing a vertical lift of roughly 188 kg with a 2:1 margin. Note that air cushions only decelerate the piston; an external rod lock is required to hold loads on air loss.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X450S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X450S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X450S |
| Bore size | Ø100 mm |
| Stroke | 450 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-SAUD100X450S 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-SAUD100X450S 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-SUD100X450S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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-SUD100X450S Is Used
Excavator Panel Indexing
Drives simultaneous positioning of heavy cabin panels on construction machinery jigs, using the dual rods to prevent twisting during the 450mm travel.
Heavy Equipment Brake Actuation
Provides equal push and pull force for brake caliper testing rigs in heavy equipment manufacturing, ensuring consistent clamping and release over the stroke.
Crane Component Transfer
Mounts to FA brackets on crane assembly lines to push and pull large structural components, utilizing the back rod for a secondary cam operation.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X450S with the B04-SAUD100X450S
To replace the discontinued B04-SUD100X450S, select the drop-in SAUD100X450S, which matches the 100mm bore, 450mm stroke, 1/2" port, and FA/LB mounting. When sizing both ways, verify your force requirements against the equal both-ways outputs of 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa, checking neighbouring bores if margins allow. Choose a double-rod cylinder when anti-rotation stability or driving two tools from one piston is required. If your unit has the -S magnet, upgrade your switches from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG. Because the stroke is 450mm, ensure external guides are used to prevent rod bending under side loads.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X450S
- ✓ 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-SUD100X450S FAQ
Yes, the B04-SUD100X450S is discontinued. The exact drop-in replacement is the SAUD100X450S. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SUD100X450S, so the SAUD matches the 100mm bore, 450mm stroke, 1/2" port, and FA/LB mounting perfectly. You only need to upgrade legacy CS1-B/DS1-B sensors to CMSG/DMSG/EMSG.
Because it is a double-rod cylinder, force is equal both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The bore is 100mm with a 1/2" port, a 25mm rod, and M20x1.5 rod threads. The safe working load is approximately 2209 N, yielding a 188 kg vertical lift capacity with a 2:1 margin.
Related AirTAC SAU Cylinders
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