This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X250CA, 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 SU80X250CA is a double-acting profile-type standard cylinder with a Ø80mm bore and 250mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X250CA, which matches its bore, stroke, force and mounting.
The AirTAC SU80X250CA is a discontinued double-acting profile-type cylinder with an 80mm bore and 250mm stroke. It delivers 2513N push force at 0.5MPa via a 3/8" port. AirTAC replaced it with the SAU80X250CA, a direct replacement sharing the exact bore, stroke, output, and SC-series CA mounting.
This compact extruded-aluminum body is shorter than an ISO 15552 equivalent. Since this SKU lacks a magnet, it cannot accept sensors; the SAU upgrade uses CMSG/DMSG/EMSG switches for -S variants and adds a SAUF built-in-valve option.
| Model | Airtac SU63-100 Standard Cylinder SU80X250CA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X250CA |
| Bore size | Ø80 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| 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, 28 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU80X250CA carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAU80X250CA 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). |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 heavy metal workpieces during machining operations, utilizing the 2513N push force at 0.5MPa for rigid, high-load clamping.
To replace this SU80X250CA, order the SAU80X250CA. Verify your 3/8" port, M20x1.5 rod thread, and CA mounting accessory. Because this specific SKU has no -S magnet, it cannot support sensing. If your application requires position detection, the SAU replacement allows CMSG/DMSG/EMSG switches. At 250mm stroke, side-load and rod-bending risks are moderate; ensure proper guide alignment. A 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore offers 3927N. Note: the air cushion only decelerates the piston; it does not hold the load. For load holding on air loss, install an external rod lock or pilot-operated check valve.
Replacement checklist
Yes, the SU80X250CA is discontinued. The direct replacement is the AirTAC SAU80X250CA. It shares the identical 80mm bore, 250mm stroke, 3/8" port, force output, and SC-series CA mounting, so no mechanical changes are required.
At 0.5MPa it pushes 2513N and pulls 2268N; at 0.7MPa it pushes 3518N, with a theoretical max of 513kgf at 1.0MPa. The adjustable 28mm cushions only decelerate the piston; they do not hold the load. For load holding, use an external rod lock or pilot-operated check valve.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X250CA replacement — usually within 7-8 hours.