This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X40S, 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 SU80X40S is a double-acting profile-type standard cylinder with a Ø80mm bore and 40mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X40S, which matches its bore, stroke, force and mounting.
The AirTAC SU80X40S is a discontinued double-acting profile-type cylinder featuring an 80mm bore and 40mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 cylinder of the same bore while sharing AirTAC SC-series mounting accessories. Delivering 2513 N of push force at 0.5 MPa, the direct replacement is the SAU80X40S, which matches the original bore, stroke, force, 3/8" port, and mounts.
Because this SKU includes a magnet (-S), it originally used legacy CS1-B/DS1-B switches; upgrading to the SAU requires switching to current CMSG/DMSG/EMSG sensors. The SAU family also introduces the SAUF variant with a built-in 4M solenoid valve, an option the SU line never offered.
| Model | Airtac SU63-100 Standard Cylinder SU80X40S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X40S |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAU80X40S 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 SAU80X40S 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. |
| ×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.
Uses the 2513 N push force at 0.5 MPa to positively deflect heavy pallets onto branching conveyor lanes without hesitation.
Short 40mm stroke provides rapid, compact actuation for squaring and aligning corrugated cartons at the end of a packaging line.
Delivers a robust 513 kgf theoretical max force at 1.0 MPa to positively eject dense stamped parts from a press bed.
To replace this SU80X40S with the SAU80X40S, verify the 80mm bore, 40mm stroke, 3/8" port (default PT thread), M20x1.5 rod-end thread, and SC-series mounting hardware. Because this is an -S model, note that your legacy CS1-B/DS1-B switches must be replaced by CMSG/DMSG/EMSG sensors on the new SAU cylinder. When sizing, consider neighboring bores: a 63mm bore yields 1559 N push at 0.5 MPa, while a 100mm bore yields 3927 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for vertical holding. For high-cycle automation, explore the SAUF built-in-valve variant to eliminate external tubing.
Replacement checklist
Yes, the AirTAC SU80X40S is discontinued and end-of-life. The direct replacement is the SAU80X40S. It provides identical bore, stroke, output force, 3/8" port, and SC-series mounting compatibility. You can order the SAU80X40S as a direct physical swap.
This 80mm bore cylinder delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical max of 513 kgf at 1.0 MPa. Because this is an -S magnet model, it used legacy CS1-B/DS1-B switches; the SAU80X40S replacement requires upgrading to current CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X40S replacement — usually within 7-8 hours.