This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD63X125N — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD63X125N 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 SUD63X125N
The AirTAC Airtac SUD Series Double Rod Cylinder SUD63X125N 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 SAUD63X125N, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD63X125N
About the Airtac SUD Series Double Rod Cylinder SUD63X125N
The AirTAC SUD63X125N is a double-acting, double-rod profile cylinder featuring a 63mm bore and 125mm stroke. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 1402N @0.5MPa, 1962N @0.7MPa, and 2523N @0.9MPa. This NBR-sealed unit operates from -20 to +70C, uses a 3/8" port, and has a 20mm rod with M16x1.5 threading. This SUD model is discontinued; the exact drop-in replacement is the SAUD63X125N, which matches the bore, stroke, force, port, and FA/LB mounting.
The double-rod design provides anti-rotation stability and allows the back rod to drive a second tool simultaneously. Without a -S suffix, this non-magnetic SKU cannot take a piston switch. For sizing, the safe working load is roughly 841N (60% of the 1402N @0.5MPa figure), translating to a vertical lift capacity of about 71kg with a 2:1 margin. Note that a plain cylinder does not hold loads on air loss; the 21mm adjustable cushions only decelerate near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD63X125N Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD63X125N |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD63X125N |
| 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 SAUD63X125N 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 SAUD63X125N 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 SUD63X125N
| 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 SUD63X125N Is Used
Dual-Tool Drive
Uses both extending rods to push and pull separate workpieces simultaneously, cutting cycle time in automated machining cells.
Anti-Rotation Lift
The twin rods prevent piston twisting during vertical elevation, ensuring precise alignment for heavy material handling.
Symmetrical Transfer
Mounts centrally to shift products from one conveyor lane to another with equal push and pull force in both directions.
Replacing the Airtac SUD Series Double Rod Cylinder SUD63X125N with the SAUD63X125N
To replace the discontinued SUD63X125N, specify the SAUD63X125N drop-in, which preserves the 63mm bore, 125mm stroke, equal-both-ways force, 3/8" port, and FA/LB mounting. When sizing both ways, verify force needs against neighbouring bores: the 50mm yields 825N @0.5MPa, while the 80mm yields 2268N @0.5MPa. Choose a double-rod cylinder when anti-rotation stability or driving two tools from one piston is required. For sensing, note this non-magnetic SKU lacks a switch groove, whereas the SAUD upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For stroke lengths >=300mm, ensure the side-load line is not exceeded to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUD63X125N
- ✓ 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 SUD63X125N FAQ
Yes, the SUD63X125N is discontinued. The exact drop-in replacement is the SAUD63X125N, offering the same 63mm bore, 125mm stroke, 3/8" port, and FA/LB mounting. The SAUD also supports current CMSG/DMSG/EMSG sensors.
Force is equal both ways: 1402N @0.5MPa, 1962N @0.7MPa, and 2523N @0.9MPa. The speed range is 30-800mm/s, operating pressure is 0.15-1.0MPa, and it features a 20mm rod with M16x1.5 thread.
Related AirTAC SAU Cylinders
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