This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X310, 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 SU100X310 is a double-acting profile-type standard cylinder with a Ø100mm bore and 310mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU100X310, which matches its bore, stroke, force and mounting.
The AirTAC SU100X310 is a discontinued double-acting profile-type cylinder with a 100mm bore and 310mm stroke. Delivering 3927 N push force at 0.5 MPa, its extruded aluminum body is more compact than an ISO 15552 unit of the same size. AirTAC replaced it with the SAU100X310 direct replacement, matching the 1/2" port, M20x1.5 rod thread, and SC-series mounting.
This non-magnetic SKU cannot accept a sensor, unlike the SAU which supports CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B). The SAU line also adds a SAUF built-in-valve option. Note that a plain cylinder drifts without air; use an external rod lock for holding.
| Model | Airtac SU63-100 Standard Cylinder SU100X310 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X310 |
| Bore size | Ø100 mm |
| Stroke | 310 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 SAU100X310 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 SAU100X310 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. |
| ×310 | 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.
Secures large metal castings during machining operations, utilizing the 3927 N push force at 0.5 MPa to maintain rigid positioning against cutting forces.
Drives large-scale diverter arms on high-capacity packaging lines, relying on the 29mm adjustable air cushions to decelerate the 310mm stroke smoothly.
To replace the SU100X310, order the SAU100X310 direct equivalent, verifying the 1/2" port, M20x1.5 thread, and SC-series mounting. Because this lacks a magnet (-S), it cannot accept a sensor; if sensing is needed, the SAU uses CMSG/DMSG/EMSG switches. For sizing down, a 80mm bore yields 2513 N push at 0.5 MPa. For the 310mm stroke, prevent rod bending by adding external guides to manage side loads. This cylinder cannot hold a load without live air; the 29mm cushions only decelerate. Install a pilot-operated check valve or rod lock for static holding. If automated actuation is needed, consider the SAUF variant with its built-in 4M solenoid valve.
Replacement checklist
Yes, the SU100X310 is discontinued. The direct replacement is the AirTAC SAU100X310. It matches the 100mm bore, 310mm stroke, 1/2" port, output force, and SC-series mounting accessories, fitting the exact same application space.
It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and a theoretical max of 801 kgf at 1.0 MPa. Because this specific SKU lacks a magnet, it cannot accept a sensor. The SAU replacement supports CMSG/DMSG/EMSG switches, whereas the older SU used CS1-B/DS1-B.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X310 replacement — usually within 7-8 hours.