This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X300CA, 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 SU63X300CA is a double-acting profile-type standard cylinder with a Ø63mm bore and 300mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X300CA, which matches its bore, stroke, force and mounting.
The AirTAC SU63X300CA is a discontinued double-acting profile-type cylinder with a 63mm bore and 300mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa via a 3/8" port. AirTAC replaced this unit with the SAU63X300CA, a direct alternative retaining the exact bore, stroke, output force, port size, and SC-series CA mounting.
Because this SKU lacks a magnet, it cannot accept a sensor. The SAU upgrade uses current CMSG/DMSG/EMSG switches, and adds a SAUF valve-integrated option the SU line never had.
| Model | Airtac SU63-100 Standard Cylinder SU63X300CA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X300CA |
| Bore size | Ø63 mm |
| Stroke | 300 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 SAU63X300CA 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 SAU63X300CA 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. |
| ×300 | 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.
Pushes heavy pallets onto adjacent conveyor lines using the 1559N push force at 0.5MPa with CA mounting.
Ejects formed metal components from a press bed, relying on adjustable 21mm cushions to brake at stroke end.
To replace this discontinued SU63X300CA, order the SAU63X300CA. Verify your 3/8" port, M16x1.5 rod thread, and CA mounting accessory. Since this is a non-magnet SKU, it cannot hold a sensor; if you need position detection, the SAU replacement requires CMSG/DMSG/EMSG switches. For sizing, a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock for held loads. With a 300mm stroke, use an external guide to prevent rod bending from side loads.
Replacement checklist
Yes, the SU63X300CA is discontinued. The direct replacement is the AirTAC SAU63X300CA. It matches the 63mm bore, 300mm stroke, 1559N force, 3/8" port, and CA mounting, fitting the same application directly.
It delivers 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and a 318kgf max at 1.0MPa. This non-magnet SKU 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 SAU63X300CA replacement — usually within 7-8 hours.