This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X650STC, 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.

The AirTAC Airtac SU63-100 Standard Cylinder SU63X650STC is a double-acting profile-type standard cylinder with a Ø63mm bore and 650mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X650STC, which matches its bore, stroke, force and mounting.
The AirTAC SU63X650STC is a discontinued double-acting profile-type cylinder with a 63mm bore and 650mm stroke. It delivers 1559N push force at 0.5MPa via a 3/8" port. AirTAC replaced this unit with the SAU63X650STC, a direct replacement retaining the exact bore, stroke, force, port size, and SC-series TC mounting interface.
This compact extruded-aluminium body is shorter than an ISO 15552 cylinder of the same bore. Note that the SAU upgrade switches to current CMSG/DMSG/EMSG sensors from the legacy CS1-B/DS1-B switches used here, and introduces the SAUF built-in-valve variant.
| Model | Airtac SU63-100 Standard Cylinder SU63X650STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X650STC |
| Bore size | Ø63 mm |
| Stroke | 650 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 SAU63X650STC carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAU63X650STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×650 | 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.
Pushes heavy pallets sideways off a main conveyor line using 1559N of thrust at 0.5MPa with the TC mount absorbing center loads.
Ejects machined metal parts from a fixture, utilizing the 21mm adjustable air cushions at both ends to decelerate the tooling.
To replace this SU63X650STC, order the SAU63X650STC ensuring the 3/8" port, M16x1.5 rod thread, and TC mounting match your existing setup. Because this is a 650mm stroke, use external guides to prevent rod bending and side-load wear. If moving down to a 50mm bore yields 982N push @0.5MPa, while an 80mm bore offers 2513N. A plain cylinder drifts on air loss; the air cushion only decelerates near stroke end, so add an external rod lock or pilot-operated check valve for load holding. The -S magnet on this SKU means you must upgrade your CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors on the new SAU.
Replacement checklist
Yes, the AirTAC SU63X650STC is discontinued. The direct replacement is the SAU63X650STC, which shares the identical 63mm bore, 650mm stroke, 1559N force, 3/8" port, and TC mounting.
It provides 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and a max theoretical force of 318kgf at 1.0MPa. The -S magnet on this unit works with legacy CS1-B/DS1-B switches; the SAU replacement requires current CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X650STC replacement — usually within 7-8 hours.