This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X700, 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 SU32~50 Standard Cylinder SU50X700 is a double-acting profile-type standard cylinder with a Ø50mm bore and 700mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X700, which matches its bore, stroke, force and mounting.
The AirTAC SU50X700 is a discontinued double-acting profile-type cylinder with a 50 mm bore and 700 mm stroke. Built with an extruded aluminum barrel and adjustable air cushions at both ends, it delivers 982 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAU50X700, a direct replacement retaining the exact 1/4" port, M16x1.5 rod thread, output force, and SC-series mounting.
Because this SKU lacks a magnet, it cannot accept a position switch. The SAU upgrade introduces current CMSG/DMSG/EMSG sensors for its -S variants and offers a SAUF built-in 4M solenoid valve option the SU line never had.
| Model | Airtac SU32~50 Standard Cylinder SU50X700 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X700 |
| Bore size | Ø50 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU50X700 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X700 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). |
|---|---|
| 50 | Bore size in mm. |
| ×700 | 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.
Drives a 700 mm routing arm on a packaging conveyor to divert heavy cartons into secondary processing lanes.
Elevates tote bins between floor levels, safely handling loads near the 50 kg vertical lift threshold.
Cycles a large safety door on a CNC enclosure, utilizing the compact profile body to save floor space.
To replace the discontinued SU50X700, order the SAU50X700 direct equivalent, verifying your 1/4" port, M16x1.5 rod thread, and SC-series mounting hardware. Since this specific SKU has no -S magnet, it cannot support sensing; if you require position detection on the new unit, specify an SAU50X700S and migrate to CMSG/DMSG/EMSG switches. For loads needing 1767 N at 0.9 MPa, this 50 mm bore is adequate, but if pushing limits, step up to the 63 mm bore (2182 N at 0.7 MPa). Note that a plain cylinder drifts on air loss—the cushions only decelerate, so use an external rod lock for holding. With the 700 mm stroke, external guides are critical to prevent rod bending and seal damage from side loads.
Replacement checklist
Yes, the SU50X700 is discontinued. The direct replacement is the AirTAC SAU50X700. It matches the 50 mm bore, 700 mm stroke, 1/4" port, output force, and SC-series mounting, so it drops straight into the same application.
At 0.5 MPa it pushes 982 N and pulls 825 N; at 0.7 MPa it pushes 1374 N, with a theoretical max of 200 kgf at 1.0 MPa. Because this specific SKU lacks a magnet, it cannot take a sensor; the SAU -S variants use CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X700 replacement — usually within 7-8 hours.