This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD63X125S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD63X125S 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 SUD63X125S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD63X125S is a double-acting profile-type standard cylinder with a Ø63mm bore and 125mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD63X125S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD63X125S
About the Airtac SUD Series Double Rod Cylinder SUD63X125S
The AirTAC SUD63X125S is a double-acting, double-rod profile cylinder featuring a 63mm bore, 125mm stroke, and a 3/8 inch port. A rod exits both ends on a single piston, meaning push and pull forces are exactly equal both ways at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. This discontinued model uses an extruded aluminium profile barrel and an M16x1.5 rod thread.
This SUD63X125S is discontinued and the exact drop-in replacement is the SAUD63X125S, retaining the same bore, stroke, force, port, and FA/LB mounting. The rear rod provides an anti-rotation benefit and carries a sensor cam for the legacy CS1-B/DS1-B switches, which upgrade to CMSG/DMSG/EMSG sensors on the SAUD. For sizing, the 1402 N @0.5 MPa force yields a safe working load of 841 N and a vertical lift capacity of 71 kg with a 2:1 margin.
Airtac SUD Series Double Rod Cylinder SUD63X125S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD63X125S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD63X125S |
| Bore size | Ø63 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| 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 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUD63X125S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAUD63X125S 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 SUD63X125S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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 SUD63X125S Is Used
Dual-Tool Machining Fixture
Drives two opposing tools simultaneously from one 63mm bore body, utilising the equal both ways force to machine parts on both ends efficiently.
Anti-Rotation Transfer Unit
The twin rods prevent piston rotation during part transfer across a conveyor, ensuring precise placement without external linear guides.
Symmetric Clamping Mechanism
Applies 1402 N of equal clamping force from both sides at 0.5 MPa, securing delicate components evenly without deflection.
Replacing the Airtac SUD Series Double Rod Cylinder SUD63X125S with the SAUD63X125S
To replace the discontinued SUD63X125S, specify the SAUD63X125S drop-in upgrade, which matches the 63mm bore, 125mm stroke, 3/8 inch port, and FA/LB mounting. When sizing both ways, verify the equal push/pull force against neighbouring bores, noting the 1402 N @0.5 MPa capacity. Choose a double-rod design when you need anti-rotation or must drive two tools simultaneously. The -S suffix indicates a piston magnet for position sensing; the legacy CS1-B/DS1-B switches change to CMSG/DMSG/EMSG on the SAUD. For this 125mm stroke, side-load alignment is manageable, but for strokes >=300mm maintain precise guide alignment to prevent rod binding. A plain cylinder does not hold loads on air loss; add an external rod lock for vertical holding.
Replacement checklist
- ✓ Same bore / stroke → SAUD63X125S
- ✓ 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 SUD63X125S FAQ
Yes, the SUD63X125S is discontinued. The exact drop-in replacement is the SAUD63X125S, which shares the same 63mm bore, 125mm stroke, 3/8 inch port, and FA/LB mounting. You simply update the legacy CS1-B/DS1-B sensors to the current CMSG/DMSG/EMSG switches.
Because it is a double-rod cylinder, the force is equal both ways. It generates 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The 3/8 inch port and 21mm adjustable cushion operate at speeds of 30-800 mm/s.
Related AirTAC SAU Cylinders
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