This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X425, 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 SU50X425
The AirTAC Airtac SU32~50 Standard Cylinder SU50X425 is a double-acting profile-type standard cylinder with a Ø50mm bore and 425mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X425, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke425 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X425
- 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 SU50X425
The AirTAC SU50X425 is a discontinued double-acting profile-type cylinder with a 50mm bore and 425mm stroke. Built with an extruded aluminum barrel and adjustable air cushions at both ends, it is shorter and more compact than an ISO 15552 cylinder of the same bore. It delivers a push force of 982 N at 0.5 MPa (pull 825 N) and uses a 1/4" port with an M16x1.5 rod thread. AirTAC replaced this end-of-life unit with the SAU50X425, a direct replacement sharing the exact same body dimensions, stroke, output force, port size, and SC-series mounting accessories.
When upgrading to the SAU50X425, note that the body and mechanics are unchanged, but the SAU platform introduces a built-in valve option (SAUF) that the SU line never offered. Because this specific SU50X425 lacks a magnet (-S), it cannot accept a magnetic sensor; if sensing is required on the replacement, you would specify an SAU50X425S and migrate to the current CMSG/DMSG/EMSG switch family (the legacy SU used CS1-B/DS1-B).
Airtac SU32~50 Standard Cylinder SU50X425 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X425 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X425 |
| Bore size | Ø50 mm |
| Stroke | 425 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 SAU50X425 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 SAU50X425 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 SU50X425
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×425 | 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 SU50X425 Is Used
Long-Reach Diversion
Actuates a diverter arm over a 425mm travel distance to route medium-weight packages on a sorting conveyor line.
Multi-Station Indexing
Shifts a machining pallet between operational stations over a 425mm span, relying on adjustable cushions to decelerate the payload.
Replacing the Airtac SU32~50 Standard Cylinder SU50X425 with the SAU50X425
To replace the discontinued SU50X425, order the SAU50X425 direct equivalent, confirming the 50mm bore, 425mm stroke, 1/4" port (default PT thread), and SC-series mounting (LB/FA/FB/CA/CB) match your existing jig. Because this SKU has no magnet, it cannot support sensing; if you need position detection, select an SAU50X425S and upgrade to CMSG/DMSG/EMSG sensors. For force sizing, verify both directions: this 50mm bore yields 982 N push and 825 N pull at 0.5 MPa. If you need less force, a 40mm bore offers 628 N push; if you need more, a 63mm bore provides 1559 N push. A plain cylinder does not hold load on air loss—the cushion only decelerates—so use an external rod lock or pilot-operated check valve for suspended loads. Finally, at 425mm the stroke is long enough that side-load and rod-bending risks increase; ensure adequate external guiding to prevent premature seal wear.
Replacement checklist
- ✓ Same bore / stroke → SAU50X425
- ✓ 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 SU50X425 FAQ
Yes, the SU50X425 is discontinued. The direct replacement is the AirTAC SAU50X425. It features the same 50mm bore, 425mm stroke, 982N output force, 1/4" port, and SC-series mounting, fitting the same application footprint without modification.
At 0.5 MPa it provides 982 N push and 825 N pull; 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 accept a sensor. If sensing is needed on the SAU replacement, order the -S version and use CMSG/DMSG/EMSG switches.
Request a Quote for the SAU50X425
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X425 replacement — usually within 7-8 hours.