This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X40, 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 SU100X40 is a double-acting profile-type standard cylinder with a Ø100mm bore and 40mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU100X40, which matches its bore, stroke, force and mounting.
The AirTAC SU100X40 is a discontinued double-acting profile-type cylinder with a 100mm bore and 40mm stroke. Built with an extruded aluminum barrel, it is shorter and more compact than an ISO 15552 cylinder of the same size, delivering 3927 N push force at 0.5 MPa. AirTAC replaced this end-of-life unit with the SAU100X40, a direct upgrade retaining the exact bore, stroke, 1/2" port, and SC-series mounting compatibility.
This specific SKU lacks a magnet (-S) and therefore cannot accept a magnetic sensor. The SAU replacement modernizes sensing with CMSG/DMSG/EMSG switches, whereas the legacy SU used CS1-B/DS1-B reed switches. Note that a standard cylinder drifts without live air; use an external rod lock for load holding.
| Model | Airtac SU63-100 Standard Cylinder SU100X40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X40 |
| Bore size | Ø100 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU100X40 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAU100X40 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). |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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.
Drives heavy-duty stamping and forming dies, utilizing the 3927 N push force at 0.5 MPa to deform thick sheet metal reliably within a compact 40mm stroke.
Acts as a high-force squaring stop or heavy-load positioning gate in conveyor lines, easily halting pallets up to 200 kg without requiring full system pressure.
Secures large fabricated steel frames during welding or machining, providing rigid 100mm bore clamping power while fitting into tighter machine footprints.
To replace the discontinued SU100X40, order the SAU100X40 direct equivalent, verifying your 1/2" port thread (PT, G, or NPT) and SC-series mounting hardware (LB, FA, FB, CA, CB, or TC). Because this SKU has no magnet, it cannot support position sensing; if you need switches on the SAU, specify the -S option and use current CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B. Sizing both ways: the 100mm bore yields 3927 N push at 0.5 MPa, so if you only need to move 2356 N, a smaller bore may suffice, while heavier loads up to 7068 N at 0.9 MPa are covered. For applications requiring held loads during air loss, add a pilot-operated check valve or external rod lock, as the 29mm adjustable cushion only decelerates. The SAUF variant also adds a built-in 4M solenoid valve the SU lacked.
Replacement checklist
Yes, the AirTAC SU100X40 is discontinued. The direct replacement is the SAU100X40. It features the same 100mm bore, 40mm stroke, 1/2" port, output force, and SC-series mounting, so it fits the same application directly.
At 0.5 MPa it provides 3927 N push and 3681 N pull; at 0.7 MPa it pushes 5497 N, and 7068 N at 0.9 MPa, with a theoretical max of 801 kgf at 1.0 MPa. This specific SU100X40 SKU has no magnet, so it cannot take a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X40 replacement — usually within 7-8 hours.