This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X400, 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.
Airtac SU32~50 Standard Cylinder SU50X400
The AirTAC SU32~50 Standard Cylinder SU50X400 is a double-acting profile-type standard cylinder with a Ø50mm bore and 400mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X400, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X400
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SU32~50 Standard Cylinder SU50X400
The AirTAC SU50X400 is a discontinued double-acting profile-type cylinder featuring a 50mm bore, 400mm stroke, and an extruded aluminum barrel. AirTAC ended this line, making the SAU50X400 the direct replacement.
The SAU50X400 maintains the original 1/4" port, M16x1.5 rod thread, and SC-series mounting accessories. Because this specific SU SKU lacks a magnet, it cannot accept a position sensor. If sensing is required on the upgrade, the SAU family uses modern CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B reeds. Furthermore, the SAU line introduces the SAUF variant with a built-in 4M solenoid valve, an option the SU series never offered.
Airtac SU32~50 Standard Cylinder SU50X400 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X400 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X400 |
| Bore size | Ø50 mm |
| Stroke | 400 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 SAU50X400 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X400 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SU32~50 Standard Cylinder SU50X400
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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.
Where the Airtac SU32~50 Standard Cylinder SU50X400 Is Used
Package Diverting
Pushes cartons off a sorting line using 982 N of thrust, while the 400mm stroke reaches across a wide conveyor belt.
Material Lowering
Lowers lightweight fixtures down a 400mm path, relying on adjustable end cushions to decelerate the load smoothly.
Replacing the Airtac SU32~50 Standard Cylinder SU50X400 with the SAU50X400
To replace the SU50X400, order the SAU50X400 direct equivalent, confirming the 50mm bore, 400mm stroke, 1/4" port, and PT thread type. When sizing, neighboring bores offer different force classes: a 40mm bore provides 628 N push at 0.5 MPa, while a 63mm bore yields 1559 N. This 50mm bore generates 982 N push and 825 N pull at 0.5 MPa, peaking at 200 kgf at 1.0 MPa. A plain cylinder drifts without live air, so add an external rod lock or pilot-operated check valve for load holding. Since the 400mm stroke is long, use an external guide to prevent rod bending and side-load damage. This no-magnet SKU cannot take a sensor, but a future SAU upgrade with -S uses CMSG/DMSG/EMSG switches.
Replacement checklist
- ✓ Same bore / stroke → SAU50X400
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SU32~50 Standard Cylinder SU50X400 FAQ
Yes, the AirTAC SU50X400 is discontinued. The direct replacement is the SAU50X400, which shares the identical 50mm bore, 400mm stroke, 982 N force, 1/4" port, and SC-series mounting.
The bore delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a maximum theoretical force of 200 kgf at 1.0 MPa. Because this specific SKU lacks a magnet, it cannot accept a sensor; the SAU replacement with -S uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU50X400
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X400 replacement — usually within 7-8 hours.