This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD50X100S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD50X100S 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-SUD50X100S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD50X100S is a double-acting profile-type standard cylinder with a Ø50mm bore and 100mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD50X100S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke100 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAUD50X100S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD50X100S
The AirTAC B04-SUD50X100S is a discontinued double-rod profile cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SUD50X100S, mechanically identical in every spec. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways (825 N @0.5 MPa, 1154 N @0.7 MPa, 1484 N @0.9 MPa). The extruded aluminium profile barrel is shorter than an ISO 15552 cylinder of the same 50 mm bore. It features a 1/4" port, M16x1.5 rod thread, and 21 mm adjustable air cushions at each end.
The exact drop-in replacement is the SAUD50X100S, which shares the same bore, stroke, equal force, port, and FA/LB mounting. The SAUD upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches found on this -S magnet model. For sizing, the 825 N @0.5 MPa force yields a safe working load of ~495 N (60% factor) and a vertical lift capacity of ~42 kg with a 2:1 margin. 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-SUD50X100S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD50X100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD50X100S |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD50X100S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The B04-SAUD50X100S 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-SUD50X100S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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-SUD50X100S Is Used
Excavator Panel Pusher
Drives exterior counterweight panels on heavy equipment using equal both-ways force, preventing gravity bias during extension and retraction on the construction site.
Dual-Tool Actuator
Simultaneously operates two synchronized clamping arms from opposite ends of the same piston, ensuring parallel part feeding in machinery assembly lines.
Sensor Cam Mechanism
Uses the rear exiting rod to carry a magnet cam for legacy CS1-B/DS1-B position switches, saving space while providing positive feedback in tight equipment bays.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD50X100S with the B04-SAUD50X100S
To replace the B04-SUD50X100S, specify the SAUD50X100S drop-in: it matches the 50 mm bore, 100 mm stroke, 1/4" port, and FA/LB mounting exactly. When sizing both ways, check the 825 N @0.5 MPa equal force against your load, and consider the neighbouring 40 mm (528 N) or 63 mm (1402 N) bores if your margin is too tight or loose. A double rod is right when you need anti-rotation stability, want to drive two tools from one cylinder, or need the back rod to carry a sensor cam. For the -S magnet option, swap legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG on the SAUD. For this 100 mm stroke (which is under 300 mm), side-load concerns are minimal, but always verify rod alignment. Mounting compatibility is with the AirTAC SC series only.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD50X100S
- ✓ 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-SUD50X100S FAQ
Yes, the B04-SUD50X100S (construction-machinery dedicated SUD50X100S) is discontinued. The exact drop-in replacement is the SAUD50X100S. It shares the same 50 mm bore, 100 mm stroke, equal both-ways force, 1/4" port, and FA/LB mounting. The SAUD also offers the SAUF built-in-valve variant the SU line lacked.
Because it is a double-rod cylinder, force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. Operating speed is 30-800 mm/s. The 1/4" port and 21 mm adjustable cushion at each end manage deceleration, but an external rod lock is required for load holding on air loss.
Related AirTAC SAU Cylinders
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