This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X25STC, 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 SU63-100 Standard Cylinder SU63X25STC
The AirTAC Airtac SU63-100 Standard Cylinder SU63X25STC 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 SAU63X25STC, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke25 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X25STC
- 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 SU63-100 Standard Cylinder SU63X25STC
The AirTAC SU63X25STC is a discontinued double-acting profile-type cylinder with a 63mm bore and 25mm stroke. Delivering 1559N push force at 0.5MPa, its extruded aluminum body is more compact than an ISO 15552 unit of the same size. AirTAC replaced this unit with the SAU63X25STC, a direct upgrade retaining the exact bore, stroke, 3/8" port, and SC-series TC mounting interface.
When upgrading, note the SAU body uses current CMSG/DMSG/EMSG sensors instead of this unit's legacy CS1-B/DS1-B switches, and the SAUF variant adds a built-in valve the SU lacked. Remember that standard air cushions only decelerate; use an external rod lock to hold loads securely.
Airtac SU63-100 Standard Cylinder SU63X25STC Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X25STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X25STC |
| 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 SAU63X25STC 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 SAU63X25STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SU63-100 Standard Cylinder SU63X25STC
| 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 SU63-100 Standard Cylinder SU63X25STC Is Used
Short-Stroke Diverter
Ideal for rapidly sorting heavy packages on a conveyor line using the 1559N push force within a tight 25mm travel envelope.
Clamping Station
Provides robust 63mm bore clamping pressure for machining fixtures, where the TC mount absorbs lateral torque during operation.
Replacing the Airtac SU63-100 Standard Cylinder SU63X25STC with the SAU63X25STC
To replace this discontinued SU63X25STC, order the SAU63X25STC, matching the 63mm bore, 25mm stroke, 3/8" port, and TC mounting. Because the -S magnet is present, you must switch from legacy CS1-B/DS1-B switches to the SAU's CMSG/DMSG/EMSG sensors. If checking adjacent bores, a 50mm bore provides 982N push at 0.5MPa while an 80mm bore yields 2513N. For load holding, note the cushion only decelerates; add a pilot-operated check valve or rod lock to prevent drift. The short 25mm stroke avoids rod-bending side-load issues, but ensure the TC mount handles the rotational torque. The SAUF valve-integrated option can simplify plumbing if you lack a separate solenoid.
Replacement checklist
- ✓ Same bore / stroke → SAU63X25STC
- ✓ 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 SU63-100 Standard Cylinder SU63X25STC FAQ
Yes, the AirTAC SU63X25STC is discontinued and end-of-life. The direct replacement is the SAU63X25STC. It shares the identical 63mm bore, 25mm stroke, output force, 3/8" port, and SC-series TC mounting accessories, fitting the exact same application space.
The 63mm bore delivers 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and a 318kgf theoretical max at 1.0MPa. Because this model includes the -S magnet, it used legacy CS1-B/DS1-B switches; the SAU replacement requires the newer CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X25STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X25STC replacement — usually within 7-8 hours.