This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X25TC, 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 SU40X25TC
The AirTAC SU32~50 Standard Cylinder SU40X25TC is a double-acting profile-type standard cylinder with a Ø40mm bore and 25mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X25TC, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X25TC
- 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 SU40X25TC
The AirTAC SU40X25TC is a discontinued double-acting profile cylinder with a 40mm bore and 25mm stroke. Delivering 628N push force at 0.5MPa via a 1/4" port, it is replaced directly by the SAU40X25TC. This direct successor matches the exact bore, stroke, output force, port size, and TC mounting interface.
Because this specific SKU lacks a magnet (-S), it cannot accept a magnetic sensor. The SAU replacement also omits the magnet but introduces compatibility with modern CMSG/DMSG/EMSG switches when ordered with an S suffix, whereas the legacy SU line used older CS1-B/DS1-B sensors.
Airtac SU32~50 Standard Cylinder SU40X25TC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X25TC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X25TC |
| Bore size | Ø40 mm |
| Stroke | 25 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 SAU40X25TC 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 SAU40X25TC 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 SU40X25TC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 SU40X25TC Is Used
Short-Stroke Clamping
Ideal for securing 32kg workpieces in machining fixtures, utilizing the 628N push force over a compact 25mm travel.
Pallet Stopper
Acts as a pneumatic stop for pallets using the TC mount, with the 21mm cushion absorbing impact at stroke end.
Replacing the Airtac SU32~50 Standard Cylinder SU40X25TC with the SAU40X25TC
To replace the SU40X25TC, order the SAU40X25TC. Verify your 1/4" port thread (PT, G, or NPT) and confirm the TC mounting accessory is retained. This SKU has no magnet and cannot support sensing; if position detection is needed, order the SAU40X25TC-S and switch to CMSG/DMSG/EMSG sensors. For higher loads, the 50mm bore offers 982N push at 0.5MPa, while the 32mm bore provides 402N. Note that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end—so use an external rod lock or pilot-operated check valve for held loads. The SAUF variant adds a built-in 4M valve if integrated switching is desired.
Replacement checklist
- ✓ Same bore / stroke → SAU40X25TC
- ✓ 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 SU40X25TC FAQ
Yes, the AirTAC SU40X25TC is discontinued. The direct replacement is the SAU40X25TC, which maintains the same 40mm bore, 25mm stroke, 628N force, 1/4" port, and TC mounting.
It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. It cannot hold a load without live air—the cushion only decelerates—so use an external rod lock for holding. Also, this no-magnet SKU cannot take a sensor.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X25TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X25TC replacement — usually within 7-8 hours.