This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD63X25S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 SUD63X25S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD63X25S is a double-acting profile-type standard cylinder with a Ø63mm bore and 25mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD63X25S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke25 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD63X25S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SUD Series Double Rod Cylinder SUD63X25S
The AirTAC SUD63X25S is a double-acting, double-rod profile cylinder that is officially discontinued. The direct replacement is the SAUD63X25S, matching the 63mm bore, 25mm stroke, 3/8" port, and SC-series FA/LB mounting. A rod exits both ends on a single piston, meaning push and pull force are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The extruded aluminum barrel is shorter than an ISO 15552 cylinder of the same bore.
Because both faces use the rod-side area, the back rod can carry a sensor cam to drive two tools simultaneously with anti-rotation stability. This SUD model uses a built-in magnet for legacy CS1-B/DS1-B switches, whereas the SAUD upgrade uses current CMSG/DMSG/EMSG sensors. Note that air cushions only decelerate near stroke end; use an external rod lock for load holding.
Airtac SUD Series Double Rod Cylinder SUD63X25S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD63X25S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD63X25S |
| Bore size | Ø63 mm |
| Stroke | 25 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 SAUD63X25S 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 SAUD63X25S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUD Series Double Rod Cylinder SUD63X25S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | 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 SUD63X25S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously with equal push and pull force, maintaining strict anti-rotation stability for precise part profiling.
Transfer Pusher Assembly
Uses the rear rod extension to mount a sensor cam while the front rod pushes workpieces down a 3/8" port-fed line without requiring separate actuators.
Replacing the Airtac SUD Series Double Rod Cylinder SUD63X25S with the SAUD63X25S
To replace the discontinued SUD63X25S, order the SAUD63X25S (insert an A after the leading S) to retain the exact 63mm bore, 25mm stroke, M16x1.5 rod thread, and 3/8" port. Size both ways by checking neighbor bores, ensuring the equal-both-ways force (1402 N @0.5 MPa) meets your push and pull requirements. Choose a double-rod cylinder when you need anti-rotation stability or want to drive two tools from one piston. Mounting is limited to Basic, FA, and LB styles (SC-series only). If your SUD has the -S magnet, upgrade from legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. For this 25mm stroke, side-load concerns are minimal, but for strokes >=300mm, verify guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUD63X25S
- ✓ 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 SUD63X25S FAQ
Yes, the SUD63X25S is discontinued. The direct replacement is the SAUD63X25S, which matches the 63mm bore, 25mm stroke, 3/8" port, and FA/LB mounting. You must upgrade the sensors from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG.
Because it is a double-rod cylinder, force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD63X25S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD63X25S replacement — usually within 7-8 hours.