This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD63X125STC — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD63X125STC 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 SUD63X125STC
The AirTAC Airtac SUD Series Double Rod Cylinder SUD63X125STC 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 SAUD63X125STC, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD63X125STC
About the Airtac SUD Series Double Rod Cylinder SUD63X125STC
The AirTAC SUD63X125STC is a discontinued double-rod double-acting profile cylinder with a 63mm bore and 125mm stroke. A rod exits both ends on one piston, meaning push and pull force are equal at 1402N @0.5MPa, 1962N @0.7MPa and 2523N @0.9MPa. The exact drop-in replacement is the SAUD63X125STC, retaining the 3/8" port, M16x1.5 rod thread and TC mounting interface. The extruded aluminium profile barrel is shorter than an ISO 15552 cylinder of the same bore.
This design provides equal both ways force and prevents rod rotation by driving two tools simultaneously from a single piston. With a 1402N output at 0.5MPa, the computed safe working load is roughly 841N, translating to a vertical lift capacity of about 71kg with a 2:1 margin. The built-in piston magnet works with legacy CS1-B/DS1-B switches, whereas the SAUD upgrade uses current CMSG/DMSG/EMSG sensors. A plain cylinder does not hold loads on air loss; the 21mm adjustable air cushions only decelerate near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD63X125STC Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD63X125STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD63X125STC |
| 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 SAUD63X125STC 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 SAUD63X125STC 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 SUD63X125STC
| 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 SUD63X125STC Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously from one piston, utilising the equal both ways force to ensure perfectly balanced cutting pressure.
Anti-Rotation Lifting Jig
Lifts vertically guided jigs up to 71kg without rod twist, using the double-rod profile to maintain precise alignment during transfer.
Symmetric Transfer Arm
Pushes and pulls parts across a conveyor with identical 1402N force at 0.5MPa, using the rear rod to mount a sensor cam for position feedback.
Replacing the Airtac SUD Series Double Rod Cylinder SUD63X125STC with the SAUD63X125STC
To replace this discontinued SUD63X125STC, select the SAUD63X125STC drop-in equivalent, which matches the 63mm bore, 125mm stroke, 3/8" port and TC mounting. When sizing both ways, verify the equal push/pull force fits your needs; neighbouring bores (50mm or 80mm) offer 825N or 2268N at 0.5MPa respectively. Choose a double-rod cylinder when you need anti-rotation, a back rod to carry a sensor cam, or to drive two tools. The TC mount is an SC-series accessory. Because this unit has an S magnet, upgrade from CS1-B/DS1-B to CMSG/DMSG/EMSG sensors. For this 125mm stroke, ensure the side-load line is acceptable. Cushions only decelerate; add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUD63X125STC
- ✓ 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 SUD63X125STC FAQ
Yes, the SUD63X125STC is discontinued. The exact drop-in replacement is the SAUD63X125STC, which matches the 63mm bore, 125mm stroke, 3/8" port, force and TC mounting. You must upgrade the sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG.
The 3/8" ported 63mm bore provides equal push and pull force both ways: 1402N at 0.5MPa, 1962N at 0.7MPa, and 2523N at 0.9MPa. The computed safe working load is 841N, allowing a 71kg vertical lift with a 2:1 margin.
Related AirTAC SAU Cylinders
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