This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X500TC, 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 SU32~50 Standard Cylinder SU40X500TC is a double-acting profile-type standard cylinder with a Ø40mm bore and 500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X500TC, which matches its bore, stroke, force and mounting.
The AirTAC SU40X500TC is a discontinued double-acting profile-type cylinder with a 40mm bore and 500mm stroke. It delivers 628N push force at 0.5MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU40X500TC, a direct alternative retaining the exact body dimensions, M12x1.25 rod thread, output force, and SC-series TC mounting interface.
Because this SKU lacks a magnet, it cannot accept position sensors. The SAU upgrade also transitions to current CMSG/DMSG/EMSG switches if you add an -S variant later, and introduces the SAUF built-in-valve option.
| Model | Airtac SU32~50 Standard Cylinder SU40X500TC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X500TC |
| Bore size | Ø40 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU40X500TC carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAU40X500TC 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). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 packages across transfer lines using the 500mm travel, relying on the adjustable 21mm cushions to decelerate the 628N thrust smoothly.
Secures workpieces via the TC mount, delivering 528N pull force at 0.5MPa while the compact profile body saves floor space.
To replace this SU40X500TC, order the SAU40X500TC, confirming the 40mm bore, 500mm stroke, 1/4" port, and TC mounting. This non-magnetic SKU cannot support sensors, but if you ever need detection, the SAU family uses CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. When sizing, the 40mm bore yields 628N push at 0.5MPa; if undersized, the 50mm bore offers 982N. For the 500mm stroke, use external guides to prevent rod bending and side loads. Note that a standard cylinder drifts without air; use an external rod lock or pilot-operated check valve for load holding. The SAUF variant offers a built-in valve if compact actuation is needed.
Replacement checklist
Yes, the SU40X500TC is discontinued. The direct replacement is the SAU40X500TC. It matches the 40mm bore, 500mm stroke, 1/4" port, force, and TC mounting, but uses current CMSG/DMSG/EMSG sensors if you switch to a magnetized version.
At 0.5MPa it provides 628N push and 528N pull. At 0.7MPa push is 879N, and at 0.9MPa it is 1130N, with a theoretical max of 128kgf at 1.0MPa. This non-magnetic SKU cannot take switches, and because it has a 500mm stroke, external guides are required to manage side loads. The air cushions only decelerate the piston; they do not hold the load, so use a rod lock for vertical safety.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X500TC replacement — usually within 7-8 hours.