This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X75H, 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 SU63-100 Standard Cylinder SU63X75H is a double-acting profile-type standard cylinder with a Ø63mm bore and 75mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X75H, which matches its bore, stroke, force and mounting.
The AirTAC SU63X75H is a discontinued double-acting profile-type cylinder with a 63 mm bore and 75 mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 unit of the same bore and shares AirTAC SC-series mounting. This high-temperature -H variant uses Viton FKM seals rated for 0 to 150 C.
Because the SU line is end-of-life, you should order the direct replacement: SAU63X75H. The SAU keeps the same body, force, port, and SC accessories. Note that this specific SU SKU lacks a magnet (-S), so it cannot accept a sensor. If you need position detection on the SAU, you must order an -S version and use the current CMSG/DMSG/EMSG switches, as the legacy CS1-B/DS1-B sensors are obsolete. The SAU family also adds a SAUF variant with a built-in valve, an option the SU never had.
| Model | Airtac SU63-100 Standard Cylinder SU63X75H |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X75H |
| Bore size | Ø63 mm |
| Stroke | 75 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 SAU63X75H 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 SAU63X75H 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. |
| ×75 | 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.
Ideal for plastic injection molding ejectors where ambient heat requires Viton -H seals rated to 150 C, utilizing the 1559 N push force at 0.5 MPa.
Pushes heated components along packaging lines safely; the 75 mm stroke and 318 kgf max force capacity handle dense parts without overtravel.
Secures workpieces in tight machining cells where the shorter profile body saves space compared to standard ISO cylinders of the same bore.
To replace this SU63X75H, order the SAU63X75H. Verify your 3/8" port, M16x1.5 rod thread, and SC-series mounting hardware (LB/FA/FB/CA/CB) — all are identical drop-ins. If sizing neighbors, a 50 mm bore gives 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. This 63 mm bore provides 1559 N push and 1402 N pull at 0.5 MPa, with a theoretical max of 318 kgf at 1.0 MPa. This SKU has no magnet, so it cannot support sensing; if you need switches, specify an SAU -S model and upgrade to CMSG/DMSG/EMSG sensors. Remember that a standard cylinder drifts on air loss—the cushion only decelerates near stroke end—so fit an external rod lock or pilot-operated check valve for held loads.
Replacement checklist
Yes, the SU63X75H is discontinued. The direct replacement is the SAU63X75H. It matches the 63 mm bore, 75 mm stroke, 3/8" port, Viton -H seal, and SC-series mounting. You can swap it directly without altering your mechanical setup.
It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N at 0.9 MPa, and a 318 kgf max at 1.0 MPa. This specific SKU lacks a magnet, so it cannot accept sensors. If you need detection on the SAU replacement, order an -S version which uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X75H replacement — usually within 7-8 hours.