This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X400CA, 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 SU50X400CA
The AirTAC Airtac SU32~50 Standard Cylinder SU50X400CA 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 SAU50X400CA, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X400CA
- 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 SU50X400CA
The AirTAC SU50X400CA is a discontinued double-acting profile-type cylinder with a 50mm bore and 400mm stroke. It delivers 982N push force at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU50X400CA, a direct replacement retaining the exact bore, stroke, force, port, and SC-series CA mounting interface.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors and a SAUF built-in-valve variant the SU lacked. This SKU has no magnet and cannot accept a switch. Note that air cushions only decelerate; use an external rod lock to hold loads.
Airtac SU32~50 Standard Cylinder SU50X400CA Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X400CA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X400CA |
| 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 SAU50X400CA 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 SAU50X400CA 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 SU50X400CA
| 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 SU50X400CA Is Used
Package Diverting
Pushes cartons at 90 degrees on a sorting line using the 982N push force, with the 400mm stroke clearing adjacent lanes.
Pallet Stopper Gate
Acts as a pneumatic stop for incoming pallets, absorbing kinetic energy through the adjustable cushions before retracting.
Replacing the Airtac SU32~50 Standard Cylinder SU50X400CA with the SAU50X400CA
To replace the SU50X400CA, order the SAU50X400CA. Verify your 1/4" port, M16x1.5 rod thread, and CA mounting. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B switches, and the SAU upgrade moves to CMSG/DMSG/EMSG sensors anyway. For sizing, the 50mm bore yields 982N push at 0.5MPa; if you need less force, step down to a 40mm bore (628N), or up to 63mm (1559N). With a 400mm stroke, prevent rod bending by supporting the load with an external guide. A plain cylinder drifts without air; use a pilot-operated check valve for holding. The SAUF variant adds a built-in valve if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU50X400CA
- ✓ 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 SU50X400CA FAQ
Yes, the SU50X400CA is discontinued. The direct replacement is the AirTAC SAU50X400CA. It matches the 50mm bore, 400mm stroke, 982N force, 1/4" port, and CA mounting, so it drops into the same application.
At 0.5MPa it pushes 982N and pulls 825N; at 0.7MPa push is 1374N, with a theoretical max of 200kgf at 1.0MPa. This specific SKU has no magnet, so it cannot take a sensor. The SAU replacement uses CMSG/DMSG/EMSG switches.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X400CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X400CA replacement — usually within 7-8 hours.