This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD100X700 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD100X700 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-SUD100X700
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X700 is a double-acting profile-type standard cylinder with a Ø100mm bore and 700mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD100X700, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke700 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X700
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X700
The B04-SUD100X700 is a double-acting, double-rod profile cylinder where the B04- prefix marks it as AirTAC's construction-machinery dedicated variant of the SUD100X700, mechanically identical to the base model. A rod exits both ends of the single piston, meaning push and pull forces are equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It features a 100mm bore, 700mm stroke, 1/2" port, M20x1.5 rod thread, and 29mm adjustable air cushions. This SUD series is discontinued and the exact drop-in replacement is the SAUD100X700, which retains the same body, bore, stroke, force, port, and FA/LB mounting.
Because the second rod can drive a second tool or carry a sensor cam while resisting rotation, double-rod designs excel in heavy-equipment frames. Based on the 3681 N @0.5 MPa output, the safe working load is approximately 2209 N (60% margin), yielding a vertical lift capacity of about 188 kg with a 2:1 margin. Note this SKU has no magnet (-S) and cannot take a magnetic switch. The air cushion only decelerates near stroke end; it does not hold loads on air loss, so an external rod lock is needed for holding.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X700 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X700 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X700 |
| Bore size | Ø100 mm |
| Stroke | 700 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-SAUD100X700 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-SAUD100X700 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-SUD100X700
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×700 | 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-SUD100X700 Is Used
Excavator Linkage Actuation
Drives synchronized dual-tool mechanisms on heavy-equipment frames where equal push/pull force and high side-load resistance are critical.
Crane Boom Alignment
Uses the twin-rod anti-rotation特性 to keep construction-machinery booms aligned without twisting during extension.
Concrete Pump Gate
Simultaneously shifts two diverter gates from opposite ends, leveraging the 3681 N @0.5 MPa equal force for reliable material routing.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X700 with the B04-SAUD100X700
To replace the discontinued B04-SUD100X700, use the SAUD100X700 drop-in: same 100mm bore, 700mm stroke, equal-both-ways force, 1/2" port, and FA/LB mounting. When sizing both ways, verify the 3681 N @0.5 MPa output fits your load, or step to neighboring bores if more force is needed. A double rod is right when you need anti-rotation, dual-tool driving, or a back rod for a sensor cam. Because this SKU lacks a magnet, it cannot take sensors; the SAUD replacement uses current CMSG/DMSG/EMSG sensors (the SUD used legacy CS1-B/DS1-B). For the 700mm stroke, add external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X700
- ✓ 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-SUD100X700 FAQ
Yes, this SUD model is discontinued. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SUD100X700. The exact drop-in replacement is the SAUD100X700, which matches the 100mm bore, 700mm stroke, equal force, 1/2" port, and FA/LB mounting.
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 dictates a 1/2" air port. The air cushion only decelerates; it does not hold loads on air loss, requiring an external rod lock for holding.
Related AirTAC SAU Cylinders
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