This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X250STC, 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 SU50X250STC
The AirTAC SU32~50 Standard Cylinder SU50X250STC is a double-acting profile-type standard cylinder with a Ø50mm bore and 250mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X250STC, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke250 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X250STC
- 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 SU50X250STC
The AirTAC SU50X250STC is a discontinued double-acting profile-type cylinder with a 50mm bore, 250mm stroke, 1/4" port, and TC mounting. Delivering 982 N push at 0.5 MPa, it is directly replaced by the SAU50X250STC—a direct upgrade sharing the exact same body, force, stroke, port and SC-series accessories.
Because it uses an extruded aluminum profile, this cylinder is shorter and more compact than an ISO 15552 unit of the same bore. The built-in magnet (-S) worked with legacy CS1-B/DS1-B switches, but the SAU replacement upgrades to current CMSG/DMSG/EMSG sensors.
Airtac SU32~50 Standard Cylinder SU50X250STC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X250STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X250STC |
| Bore size | Ø50 mm |
| Stroke | 250 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 SAU50X250STC 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 SAU50X250STC 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 SU50X250STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 SU50X250STC Is Used
Package Diverting
Actuates diverting arms on packaging lines using the 982 N push force and TC mount to re-route boxes efficiently.
Clamp Actuation
Drives mid-force clamping mechanisms on machining fixtures, utilizing the 250mm stroke to clear the workpiece fully.
Replacing the Airtac SU32~50 Standard Cylinder SU50X250STC with the SAU50X250STC
To replace this SU50X250STC, order the SAU50X250STC direct equivalent, keeping the 50mm bore, 250mm stroke, 1/4" port, and TC mounting. If your machine currently uses the -S magnet for position sensing, note that the SAU requires the newer CMSG/DMSG/EMSG switch family instead of the legacy CS1-B/DS1-B. For sizing alternatives, a 40mm bore yields 628 N push at 0.5 MPa, while a 63mm bore provides 1559 N. At 250mm stroke, ensure adequate guide support to prevent rod bending and side-load wear. A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for held loads. The SAU line also offers a SAUF variant with a built-in 4M solenoid valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU50X250STC
- ✓ 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 SU50X250STC FAQ
Yes, the SU50X250STC is discontinued. The direct replacement is the SAU50X250STC. It shares the same 50mm bore, 250mm stroke, 1/4" port, output force, and TC mounting interface, fitting the same application directly.
It delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. The -S magnet on this legacy SU works with CS1-B/DS1-B switches; the SAU replacement requires CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X250STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X250STC replacement — usually within 7-8 hours.