This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X25S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X25S 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 SUD Series Double Rod Cylinder SUD50X25S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X25S is a double-acting profile-type standard cylinder with a Ø50mm bore and 25mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X25S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X25S
About the Airtac SUD Series Double Rod Cylinder SUD50X25S
The AirTAC SUD50X25S is a double-acting, double-rod profile cylinder that is officially discontinued; its exact drop-in replacement is the SAUD50X25S. Because a rod exits both ends on one piston, push and pull force are equal at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The extruded aluminium profile barrel is shorter than an ISO 15552 cylinder of the same bore. This 50 mm bore version features a 20 mm rod, M16x1.5 rod thread, a 1/4 inch port, and 21 mm adjustable cushions at each end. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches.
The double-rod architecture provides inherent anti-rotation stability and lets the rear rod carry a sensor cam, while the front rod drives the tool. For sizing, the safe working load is roughly 495 N (60% of the 825 N @0.5 MPa figure), and the vertical lift capacity is about 42 kg with a 2:1 margin. A plain cylinder does not hold a load on air loss; the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X25S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X25S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X25S |
| Bore size | Ø50 mm |
| Stroke | 25 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 SAUD50X25S 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 SAUD50X25S 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 SUD Series Double Rod Cylinder SUD50X25S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 SUD Series Double Rod Cylinder SUD50X25S Is Used
Parallel Gripper Jaws
Drives opposing gripper jaws where equal push and pull force ensures balanced clamping pressure on machined components.
Transfer Pusher
Uses the rear rod to mount a sensor cam while the front rod pushes parts between conveyor belts without rotational drift.
Dual-Tool Handler
Simultaneously actuates two separate pick-and-place tools from one piston, saving space in compact handling cells.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X25S with the SAUD50X25S
To replace the discontinued SUD50X25S, specify the SAUD50X25S drop-in: it matches the 50 mm bore, 25 mm stroke, 1/4 inch port, and FA/LB mounting. Size both ways by checking neighbour bores while confirming the equal push/pull force fits your load. Choose a double rod when you need anti-rotation stability or must drive two tools simultaneously. If upgrading, note the -S sensor change from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For this 25 mm stroke, side-load is minimal, but for any stroke >=300 mm, verify guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X25S
- ✓ 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 SUD Series Double Rod Cylinder SUD50X25S FAQ
Yes, the SUD50X25S is discontinued. The exact drop-in replacement is the SAUD50X25S, which shares the same 50 mm bore, 25 mm stroke, 1/4 inch port, and FA/LB mounting. You only need to upgrade the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
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. The operating speed ranges from 30-800 mm/s, with a maximum standard stroke of 1200 mm for this 50 mm bore.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD50X25S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD50X25S replacement — usually within 7-8 hours.