This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X345S, 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 SU63X345S
The AirTAC SU63-100 Standard Cylinder SU63X345S is a double-acting profile-type standard cylinder with a Ø63mm bore and 345mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X345S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke345 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X345S
- 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 SU63X345S
The AirTAC SU63X345S is a discontinued double-acting profile-type cylinder with a 63 mm bore and 345 mm stroke. It delivers 1559 N push force at 0.5 MPa via a 3/8" port. AirTAC replaced this unit with the SAU63X345S, a direct upgrade sharing the exact same body dimensions, stroke, output force, and SC-series mounting hardware.
When migrating to the SAU63X345S, your physical mounting and 3/8" pneumatic connections remain untouched. The extruded aluminum profile is more compact than a standard ISO 15552 cylinder of the same bore. Note that the -S magnet on this legacy SU worked with CS1-B/DS1-B switches, whereas the SAU replacement requires current CMSG/DMSG/EMSG sensors. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve that the SU series never offered.
Airtac SU63-100 Standard Cylinder SU63X345S Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X345S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X345S |
| Bore size | Ø63 mm |
| Stroke | 345 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 SAU63X345S 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 SAU63X345S 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 SU63X345S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×345 | 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 SU63X345S Is Used
Package Diverting
Drives diverter arms on packaging lines, utilizing the 1559 N push force to redirect heavy cartons at high cycling speeds.
Press Ejection
Ejects formed parts from light stamping presses, where the 345 mm stroke reaches deep into the machine bed to clear the tooling.
Replacing the Airtac SU63-100 Standard Cylinder SU63X345S with the SAU63X345S
To replace the SU63X345S, order the SAU63X345S. Verify your 3/8" port threads (PT, G, or NPT), M16x1.5 rod-end connection, and SC-series mounting brackets (LB, FA, FB, CA, CB, TC) all carry over directly. Because this is a 345 mm stroke, add external guide rails to prevent rod bending under side loads. If you need to size up or down, neighboring bores are 50 mm (982 N push @0.5 MPa) and 80 mm (2513 N push @0.5 MPa). The -S piston magnet means you must upgrade your position sensing: the legacy CS1-B/DS1-B switches are incompatible with the SAU, which uses CMSG/DMSG/EMSG sensors. This plain cylinder cannot hold a load without live air; the 21 mm adjustable cushions only decelerate near stroke end. For static holding on air loss, install an external rod lock or pilot-operated check valve. If you want to eliminate external tubing, consider the SAUF valve-integrated option.
Replacement checklist
- ✓ Same bore / stroke → SAU63X345S
- ✓ 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 SU63X345S FAQ
Yes, the SU63X345S is discontinued. The direct replacement is the AirTAC SAU63X345S. It matches the 63 mm bore, 345 mm stroke, 1559 N output force at 0.5 MPa, 3/8" port, and SC-series mounting accessories, fitting the exact same application space.
The SAU63X345S retains the exact force figures: 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical max of 318 kgf at 1.0 MPa. Because this is an -S magnet model, the legacy CS1-B/DS1-B switches used on the SU will not work; you must upgrade to the current CMSG, DMSG, or EMSG sensor family for the SAU replacement.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X345S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X345S replacement — usually within 7-8 hours.