This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X135S, 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 SU40X135S
The AirTAC SU32~50 Standard Cylinder SU40X135S is a double-acting profile-type standard cylinder with a Ø40mm bore and 135mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X135S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke135 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X135S
- 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 SU40X135S
The AirTAC SU40X135S is a discontinued double-acting profile-type cylinder with a 40mm bore and 135mm stroke. It delivers 628N push and 528N pull at 0.5MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU40X135S, a direct upgrade retaining the exact bore, stroke, output force, and SC-series mounting footprint.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace the SU's legacy CS1-B/DS1-B switches, and adds the SAUF built-in-valve option the SU line lacked. Remember that the air cushion only decelerates the piston; it cannot hold a load without live air.
Airtac SU32~50 Standard Cylinder SU40X135S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X135S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X135S |
| Bore size | Ø40 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 SAU40X135S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAU40X135S 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 SU40X135S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | 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 SU40X135S Is Used
Pallet Stops
Acts as a pneumatic stop gate for 32kg vertical loads within compact machinery frames.
Clamp Actuation
Drives small material clamps where the 135mm stroke positions parts for machining.
Replacing the Airtac SU32~50 Standard Cylinder SU40X135S with the SAU40X135S
To replace this SU40X135S, order the SAU40X135S direct equivalent, confirming the 40mm bore, 135mm stroke, M12x1.25 rod thread, and 1/4" port. Because this SKU includes a magnet (-S), you must upgrade your legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensor family. When sizing, compare neighbouring bores: a 32mm bore yields 402N push at 0.5MPa, while a 50mm bore provides 982N. For any load that must be held during air loss, add an external rod lock or pilot-operated check valve, as the cushion only decelerates. If you need faster cycling, explore the SAUF variant with its integrated 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X135S
- ✓ 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 SU40X135S FAQ
Yes, the SU40X135S is discontinued. The direct replacement is the AirTAC SAU40X135S. It shares the identical 40mm bore, 135mm stroke, 628N output force at 0.5MPa, 1/4" port, and SC-series mounting accessories.
The SAU40X135S provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a 128kgf maximum at 1.0MPa. Because your old SU40X135S used a magnet with CS1-B/DS1-B switches, you must upgrade to CMSG/DMSG/EMSG sensors on the SAU replacement.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X135S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X135S replacement — usually within 7-8 hours.