This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD32X175 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD32X175 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-SUD32X175
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X175 is a double-acting profile-type standard cylinder with a Ø32mm bore and 175mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD32X175, which matches its bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke175 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAUD32X175
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X175
The AirTAC B04-SUD32X175 is a double-acting, double-rod profile cylinder where the B04- prefix designates it as the construction-machinery dedicated variant of the base SUD32X175, sharing identical specifications. Because a rod exits both ends on the same piston, push and pull forces are equal both ways (345 N at 0.5 MPa). The extruded aluminum profile barrel is more compact than an ISO 15552 cylinder of the same bore. This discontinued model drops in directly to the SAUD32X175, retaining the 32 mm bore, 175 mm stroke, 1/8" port, and SC-series FA/LB mounting compatibility.
The double-rod design provides anti-rotation stability and allows the rear rod to carry a sensor cam or drive a second tool simultaneously. Without a magnetic piston (-S omitted), this SKU cannot take a magnetic switch, though the SAUD upgrade accommodates current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For sizing, the computed safe working load is roughly 207 N (60% of the 345 N force at 0.5 MPa), translating to a vertical lift capacity of about 18 kg with a 2:1 margin.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X175 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X175 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD32X175 |
| Bore size | Ø32 mm |
| Stroke | 175 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-SAUD32X175 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-SAUD32X175 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-SUD32X175
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×175 | 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-SUD32X175 Is Used
Excavator Linkage Actuation
Drives secondary construction-machinery covers or pins with equal both ways force, using the double rod to prevent rotation during repetitive digging cycles.
Heavy-Equipment Tooling Sync
Simultaneously operates two mechanisms from one cylinder body, using the opposing rod ends to push and pull separate construction-machine linkages.
Builder Machine Ejection
Ejects components from construction-equipment molds with balanced force, relying on the compact profile barrel to fit within tight machinery frames.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X175 with the B04-SAUD32X175
To replace the discontinued B04-SUD32X175, specify the SAUD32X175 drop-in equivalent, which matches the 32 mm bore, 175 mm stroke, 1/8" port, and FA/LB mounts exactly. When sizing both ways, verify the equal both ways force against neighbor bores, noting the 32 mm bore yields 345 N at 0.5 MPa while the 40 mm bore yields 528 N. A double rod is right when you need anti-rotation resistance or a rear rod to drive a second tool. Because this non-magnetic SKU lacks a piston magnet, you cannot mount switches; the SAUD upgrade uses CMSG/DMSG/EMSG sensors. For this 175 mm stroke, ensure the side-load line is observed to prevent guide bushing wear. A plain cylinder does not hold loads on air loss; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD32X175
- ✓ 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-SUD32X175 FAQ
Yes, the B04-SUD32X175 is discontinued. The exact drop-in replacement is the SAUD32X175. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SUD32X175, and the SAUD retains the exact bore, stroke, force, and 1/8" port.
Because it is a double-rod cylinder, force is equal both ways: 345 N at 0.5 MPa, 483 N at 0.7 MPa, and 621 N at 0.9 MPa. The air port is 1/8". The computed safe working load is 207 N, allowing a vertical lift of about 18 kg with a 2:1 margin.
Related AirTAC SAU Cylinders
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