This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X400STCH, 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 SU50X400STCH
The AirTAC SU32~50 Standard Cylinder SU50X400STCH 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 SAU50X400STCH, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X400STCH
- 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 SU50X400STCH
The AirTAC SU50X400STCH is a discontinued double-acting profile-type cylinder with a 50mm bore and 400mm stroke. It delivers 982 N push force at 0.5 MPa and features a 1/4" port, M16x1.5 rod thread, and 21mm adjustable cushions. The direct replacement is the SAU50X400STCH, matching the bore, stroke, force, port, and SC-series mounting.
This Viton H (-H) sealed unit handles 0-150 C environments. The -S magnet worked with legacy CS1-B/DS1-B switches, but the SAU upgrade uses CMSG/DMSG/EMSG sensors and offers a new SAUF valve-integrated variant.
Airtac SU32~50 Standard Cylinder SU50X400STCH Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X400STCH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X400STCH |
| 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 SAU50X400STCH 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 SAU50X400STCH 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 SU50X400STCH
| 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 SU50X400STCH Is Used
High-Temp Diverting
Actuates routing gates on hot conveyors, utilizing the Viton H seal to withstand 150 C ambient heat while pushing 982 N.
Oven Door Cycling
Opens and closes industrial curing oven doors, where the TC mount and 21mm cushions absorb the 982 N deceleration impact.
Replacing the Airtac SU32~50 Standard Cylinder SU50X400STCH with the SAU50X400STCH
To replace this SU50X400STCH, order the SAU50X400STCH. Confirm the 50mm bore, 400mm stroke, 1/4" port, and TC mounting interface. If relying on the -S magnet, note the SAU requires CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B. The -H Viton seal preserves the 0-150 C high-temperature rating. For sizing, a 40mm bore offers 628 N push at 0.5 MPa, while a 63mm bore provides 1559 N. At 400mm stroke, use an external guide to prevent rod bending from side loads. The cylinder will not hold a load without air; add a pilot-operated check valve or rod lock for vertical holding.
Replacement checklist
- ✓ Same bore / stroke → SAU50X400STCH
- ✓ 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 SU50X400STCH FAQ
Yes, the SU50X400STCH is discontinued. The direct replacement is the SAU50X400STCH. It shares the identical 50mm bore, 400mm stroke, 982 N force, 1/4" port, and SC-series TC mounting. You simply order the SAU model.
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. The -S magnet on this legacy SU works with CS1-B/DS1-B switches, but the SAU replacement requires the newer CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X400STCH
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X400STCH replacement — usually within 7-8 hours.