This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X325, 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 SU100X325 is a double-acting profile-type standard cylinder with a Ø100mm bore and 325mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU100X325, which matches its bore, stroke, force and mounting.
The AirTAC SU100X325 is a discontinued double-acting profile-type cylinder with a 100mm bore and 325mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, operating via a 1/2" port. AirTAC replaced this legacy unit with the SAU100X325, a direct upgrade retaining the exact bore, stroke, output force, and SC-series mounting footprint.
The SAU upgrade introduces current CMSG/DMSG/EMSG sensors, superseding the older CS1-B/DS1-B switches, and offers a new SAUF variant with a built-in 4M solenoid valve. Note this SKU lacks a magnet and cannot support sensing, while the extruded aluminum body is more compact than an ISO 15552 cylinder.
| Model | Airtac SU63-100 Standard Cylinder SU100X325 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X325 |
| Bore size | Ø100 mm |
| Stroke | 325 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 SAU100X325 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 SAU100X325 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. |
| ×325 | 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 requiring substantial push force over a 325mm travel distance.
Secures bulky fabricated components during machining, relying on the 3681 N pull force for rigid hold.
To replace the SU100X325, order the SAU100X325 and verify your 1/2" port threads (PT, G, or NPT) alongside the M20x1.5 rod-end connection. Because this is a non-magnetic SKU, it cannot accept a sensor; if detection is needed, migrate to an SAU-S model and adopt the modern CMSG/DMSG/EMSG switch family. When sizing, consider neighboring bores like the 80mm (2513 N push at 0.5 MPa) or the 100mm's 5497 N push at 0.7 MPa. For the 325mm stroke, use external guides to prevent rod bending and side-load damage. Finally, remember a standard cylinder drifts on air loss—the 29mm cushions only decelerate—so fit an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
Yes, the AirTAC SU100X325 is discontinued. The direct replacement is the SAU100X325, which shares the identical 100mm bore, 325mm stroke, 1/2" port, output force, and SC-series mounting accessories.
It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and a maximum theoretical force of 801 kgf at 1.0 MPa. This specific SKU lacks a magnet and cannot accept sensors; the SAU replacement with a magnet uses CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X325 replacement — usually within 7-8 hours.