This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD32X150S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD32X150S 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-SUD32X150S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X150S is a double-acting profile-type standard cylinder with a Ø32mm bore and 150mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD32X150S, which matches its bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke150 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAUD32X150S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X150S
The B04-SUD32X150S is a double-acting, double-rod profile cylinder where the B04- prefix denotes AirTAC's construction-machinery dedicated variant, mechanically identical to the standard SUD32X150S. A rod exits both ends of the extruded aluminum barrel on a single piston, meaning push and pull force are equal both ways at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. It features a 12 mm rod, M10x1.25 rod thread, 1/8" port, and 21 mm adjustable cushions. This legacy model is discontinued and the exact drop-in replacement is the SAUD32X150S.
The double-rod design prevents piston rotation and allows the back rod to drive a second tool or carry a sensor cam. For buyers sizing payloads, the safe working load is roughly 207 N (60% of the 345 N @0.5 MPa figure), yielding a vertical lift capacity of about 18 kg with a 2:1 margin. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches; the SAUD replacement upgrades to current CMSG/DMSG/EMSG sensors. Note that air cushions only decelerate the piston near stroke end and do not hold loads on air loss.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X150S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X150S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD32X150S |
| Bore size | Ø32 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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, 21 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD32X150S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The B04-SAUD32X150S 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-SUD32X150S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×150 | 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-SUD32X150S Is Used
Excavator Valve Control
Equal both-ways force drives pilot valve spools on heavy equipment without the asymmetric push of a single rod.
Loader Transfer Gates
The back rod carries a sensor cam to confirm gate position while the front rod pushes debris safely.
Crusher Tool Sync
Anti-rotation stability from the double rod keeps crushing jaws aligned under harsh construction loads.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X150S with the B04-SAUD32X150S
To replace the discontinued B04-SUD32X150S, use the SAUD32X150S drop-in: it matches the 32 mm bore, 150 mm stroke, 1/8" port, and FA/LB mounting. Because force is equal both ways, size it by checking neighboring bores against your exact push and pull requirements. A double rod is right when you need anti-rotation, a back-rod sensor cam, or two-tool driving. For the -S magnet, swap legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors. For this 150 mm stroke (under 300 mm), side-load alignment is less critical but still verify guide parallelism. For load holding on air loss, add an external rod lock as cushions only decelerate.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD32X150S
- ✓ 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-SUD32X150S FAQ
Yes, the B04-SUD32X150S is discontinued. The B04- prefix marks it as a construction-machinery dedicated variant of the SUD32X150S. The exact drop-in replacement is the SAUD32X150S, which matches the 32 mm bore, 150 mm stroke, 1/8" port, and FA/LB mounting. You only need to upgrade the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
Because it is a double-rod cylinder, force is equal both ways: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Operating speed ranges from 30-800 mm/s. The safe working load is about 207 N at 0.5 MPa, allowing a vertical lift of roughly 18 kg with a 2:1 margin.
Related AirTAC SAU Cylinders
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