This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X135, 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 SU40X135
The AirTAC Airtac SU32~50 Standard Cylinder SU40X135 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 SAU40X135, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke135 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X135
- 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 SU40X135
The AirTAC SU40X135 is a discontinued double-acting profile-type cylinder with a 40mm bore and 135mm stroke. Because 135mm is a non-standard stroke, it requires confirmation from the datasheet. It delivers 628 N push force at 0.5 MPa. AirTAC replaced this unit with the SAU40X135, a direct upgrade retaining the exact body profile, 1/4" port, M12x1.25 rod thread, and SC-series mounting.
The SAU upgrade introduces current CMSG/DMSG/EMSG sensors and a SAUF built-in 4M solenoid valve option the SU line lacked. This non-magnetic SKU cannot accept a sensor. Note that the cushion only decelerates; use a rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU40X135 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X135 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X135 |
| 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 SAU40X135 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 SAU40X135 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 SU40X135
| 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 SU40X135 Is Used
Compact Clamping
Ideal for securing mid-weight aluminum extrusions or plastic housings on machining fixtures where a 377 N working load provides firm, stable clamping without deforming parts.
Package Diversion
Drives a 135mm stroke diverter arm to push small cartons off a main conveyor line, utilizing the 32 kg vertical lift capacity for reliable product routing.
Pallet Stop Gate
Acts as a pneumatic stop gate in low-profile material handling systems, where the compact extruded body fits tight frame spaces and handles 528 N pull force easily.
Replacing the Airtac SU32~50 Standard Cylinder SU40X135 with the SAU40X135
To replace this SU40X135, order the SAU40X135 direct equivalent, verifying the 1/4" port, M12x1.25 thread, and SC-series mounting. Since this lacks the -S magnet, it cannot accept a sensor; if sensing is needed, specify an SAU -S model which uses CMSG/DMSG/EMSG switches. For load holding, add an external rod lock, as the cushion only decelerates. If sizing alternatives, the 32mm bore yields 402 N push at 0.5 MPa, while the 50mm bore provides 982 N. Because the 135mm stroke is non-standard, verify exact extended dimensions. For any stroke over 300mm, guide the load to prevent rod bending and side-load wear. The SAUF valve-integrated variant can simplify cycling.
Replacement checklist
- ✓ Same bore / stroke → SAU40X135
- ✓ 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 SU40X135 FAQ
Yes, the AirTAC SU40X135 is discontinued. The direct replacement is the SAU40X135. It shares the same 40mm bore, 135mm stroke, 628 N force at 0.5 MPa, 1/4" port, and SC-series mounting accessories, fitting the exact same application.
At 0.5 MPa it provides 628 N push and 528 N pull force; at 0.7 MPa it pushes 879 N, and the theoretical maximum is 128 kgf at 1.0 MPa. Because this specific SKU lacks a magnet, it cannot accept a sensor. If sensing is required, order the SAU -S variant which uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X135
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X135 replacement — usually within 7-8 hours.