This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X420, 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 SU50X420
The AirTAC SU32~50 Standard Cylinder SU50X420 is a double-acting profile-type standard cylinder with a Ø50mm bore and 420mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X420, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke420 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X420
- 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 SU50X420
The AirTAC SU50X420 is a discontinued double-acting profile-type cylinder with a 50 mm bore and 420 mm stroke. It features an extruded aluminum barrel and adjustable air cushions at both ends, making it more compact than an ISO 15552 cylinder of the same bore. Delivering 982 N push force at 0.5 MPa, it is replaced by the SAU50X420 direct equivalent.
The SAU50X420 retains the exact 50 mm bore, 420 mm stroke, 1/4" port, M16x1.5 rod thread and SC-series mounting. Upgrades include current CMSG/DMSG/EMSG sensors replacing the legacy CS1-B/DS1-B switches, plus a new SAUF built-in-valve option. This non-magnet SKU cannot take a sensor.
Airtac SU32~50 Standard Cylinder SU50X420 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X420 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X420 |
| Bore size | Ø50 mm |
| Stroke | 420 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 SAU50X420 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 SAU50X420 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 SU50X420
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×420 | 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 SU50X420 Is Used
Package Diversion
Actuates routing gates on packaging lines using the 982 N push force at 0.5 MPa, with the 420 mm stroke providing full lane-clearing reach.
Material Ejection
Pushes machined parts out of a fixture over a 420 mm travel, relying on adjustable end cushions to decelerate the 20 mm rod smoothly.
Replacing the Airtac SU32~50 Standard Cylinder SU50X420 with the SAU50X420
To replace this discontinued SU50X420, order the SAU50X420 direct: confirm the 50 mm bore, 420 mm stroke, 1/4" port, M16x1.5 rod thread, PT/G/NPT thread standard, and SC-series mounting. Because this 420 mm stroke is long, use external guides to prevent rod bending and side-load wear. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 40 mm bore yields 628 N. This non-magnet SKU cannot accept a sensor; if you need position detection, specify an SAU-S model and migrate to CMSG/DMSG/EMSG switches. A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for load holding. For self-switching, explore the SAUF valve-integrated variant.
Replacement checklist
- ✓ Same bore / stroke → SAU50X420
- ✓ 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 SU50X420 FAQ
Yes, the SU50X420 is discontinued. The direct replacement is the AirTAC SAU50X420. It shares the identical 50 mm bore, 420 mm stroke, 982 N force, 1/4" port, and SC-series mounting accessories, fitting the same application directly.
The 50 mm bore features a 1/4" port and M16x1.5 rod thread. Force output is 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Request a Quote for the SAU50X420
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X420 replacement — usually within 7-8 hours.