This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X255, 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 SU63X255
The AirTAC Airtac SU63-100 Standard Cylinder SU63X255 is a double-acting profile-type standard cylinder with a Ø63mm bore and 255mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X255, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke255 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X255
- 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 SU63X255
The AirTAC SU63X255 is a discontinued double-acting profile-type cylinder. Delivering 1559 N push force at 0.5 MPa, it uses an extruded aluminum barrel that is more compact than a same-bore ISO 15552 unit. AirTAC replaced this EOL unit with the SAU63X255, a direct sharing the 63 mm bore, 255 mm stroke, 318 kgf max force, 3/8" port, and SC-series mounting.
This non-magnet SKU cannot accept a sensor. The SAU upgrade adds a built-in valve option (SAUF) the SU lacked, and uses modern CMSG/DMSG/EMSG switches.
Airtac SU63-100 Standard Cylinder SU63X255 Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X255 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X255 |
| Bore size | Ø63 mm |
| Stroke | 255 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 SAU63X255 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 SAU63X255 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 SU63X255
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×255 | 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 SU63X255 Is Used
Package Diverting
Pushes medium-weight cartons off a main conveyor belt using 1559 N of thrust at 0.5 MPa, with the 255 mm stroke clearing adjacent guide rails.
Pallet Stopper Gate
Acts as a pneumatic stop for incoming pallets, absorbing kinetic energy via the 21 mm adjustable air cushions at both ends.
Clamp Actuation
Secures workpieces during machining, providing a safe 935 N working load that maintains firm positioning without deflecting the part.
Replacing the Airtac SU63-100 Standard Cylinder SU63X255 with the SAU63X255
To replace this SU63X255, order the SAU63X255. Confirm the 3/8" port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). Since this is a non-S SKU, it cannot take a sensor; if you need position detection on the SAU, specify the -S option and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For sizing both ways, dropping to a 50 mm bore reduces push to 982 N at 0.5 MPa, while stepping up to an 80 mm bore yields 2513 N. Note that a plain cylinder drifts on air loss—the cushions only decelerate; use an external rod lock for held loads. At 255 mm stroke, guide the load to prevent rod bending.
Replacement checklist
- ✓ Same bore / stroke → SAU63X255
- ✓ 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 SU63X255 FAQ
Yes, the SU63X255 is discontinued. The direct replacement is the AirTAC SAU63X255. It shares the identical 63 mm bore, 255 mm stroke, 318 kgf max force, 3/8" port, and SC-series mounting accessories, so it fits the same application without mechanical changes.
This non-magnet SKU cannot accept a sensor. Force ratings are 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and 2805 N at 0.9 MPa, with a 318 kgf max at 1.0 MPa. If you need sensing on the SAU replacement, you must order the -S version and use CMSG/DMSG/EMSG switches.
Request a Quote for the SAU63X255
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X255 replacement — usually within 7-8 hours.