This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X135, 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 SU50X135
The AirTAC SU32~50 Standard Cylinder SU50X135 is a double-acting profile-type standard cylinder with a Ø50mm bore and 135mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X135, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke135 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X135
- 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 SU50X135
The AirTAC SU50X135 is a discontinued double-acting profile-type cylinder with a 50mm bore and 135mm stroke. It delivers 982 N push and 825 N pull at 0.5 MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU50X135, a direct upgrade sharing the exact same extruded body dimensions, force output, and SC-series mounting. Because this SKU lacks a magnet, it cannot accept a sensing switch.
When upgrading to the SAU50X135, your mounting and 1/4" port stay identical, but the sensor family changes: the SAU uses modern CMSG/DMSG/EMSG switches instead of the older CS1-B/DS1-B type. The new SAU line also introduces a SAUF variant with a built-in valve the SU never had.
Airtac SU32~50 Standard Cylinder SU50X135 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X135 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X135 |
| Bore size | Ø50 mm |
| Stroke | 135 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 SAU50X135 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 SAU50X135 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 SU50X135
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×135 | 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 SU50X135 Is Used
Package Diversion
Pushes lightweight cartons off a sorting line using a 982 N push force at 0.5 MPa with smooth end-cushioning.
Pallet Gate Actuation
Cycles a 135mm stroke to open and close safety gates at loading docks without needing load-holding air.
Replacing the Airtac SU32~50 Standard Cylinder SU50X135 with the SAU50X135
To replace the SU50X135, order the SAU50X135. Verify your 1/4" port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) are retained. This non-magnet SKU cannot hold a sensor; if you need position detection on the SAU, add the -S option and use CMSG/DMSG/EMSG switches. For loads needing holding on air loss, add an external rod lock or pilot-operated check valve, as cushions only decelerate. If sizing neighbours, a 40mm bore yields 628 N push at 0.5 MPa, while a 63mm bore yields 1559 N. At 135mm stroke, side-load risk is low, but ensure rigid guidance for heavy loads.
Replacement checklist
- ✓ Same bore / stroke → SAU50X135
- ✓ 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 SU50X135 FAQ
Yes, the SU50X135 is discontinued. The direct replacement is the AirTAC SAU50X135. It matches the 50mm bore, 135mm stroke, 1/4" port, and SC-series mounting, so no mechanical changes are needed.
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. This specific non-magnet SKU cannot accept a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches if you add the -S option.
Request a Quote for the SAU50X135
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X135 replacement — usually within 7-8 hours.