This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X300STC, 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 SU40X300STC
The AirTAC SU32~50 Standard Cylinder SU40X300STC is a double-acting profile-type standard cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X300STC, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X300STC
- 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 SU40X300STC
The AirTAC SU40X300STC is a discontinued double-acting profile-type cylinder with a 40mm bore and 300mm stroke. It delivers 628N push and 528N pull at 0.5MPa through a 1/4-inch port. The direct replacement is the SAU40X300STC, matching the body, force, stroke and SC-series TC mounting exactly.
This compact extruded-aluminium body is shorter than an ISO 15552 equivalent. Because this SKU includes a magnet, it used legacy CS1-B/DS1-B switches; the SAU successor upgrades to CMSG/DMSG/EMSG sensors and adds a SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X300STC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X300STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X300STC |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAU40X300STC 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 SAU40X300STC 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 SU40X300STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SU40X300STC Is Used
Carton Diverting
Uses the 300mm stroke to push packages across a belt at 628N push force, securely mounted via the TC bracket.
Pallet Push-off
Ejects lighter goods from pallets where a 32kg vertical lift margin and compact profile body are required.
Component Ejection
Cycles at 30-800mm/s to clear machined parts from a fixture, relying on adjustable 21mm cushions.
Replacing the Airtac SU32~50 Standard Cylinder SU40X300STC with the SAU40X300STC
To replace this SU40X300STC, order the SAU40X300STC keeping the 40mm bore, 300mm stroke, M12x1.25 rod thread and TC mounting. If your application needs position sensing, note the SAU uses CMSG/DMSG/EMSG sensors instead of the original CS1-B/DS1-B. At 0.5MPa the 40mm bore yields 628N push; if undersized, the 50mm bore provides 982N. At 300mm stroke, prevent rod bending by guiding the load externally. The air cushion only decelerates; use a pilot-operated check valve to hold loads. The SAUF variant integrates a 4M valve if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X300STC
- ✓ 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 SU40X300STC FAQ
Yes, the SU40X300STC is discontinued. The direct replacement is the SAU40X300STC, offering the same 40mm bore, 300mm stroke, 628N force, 1/4-inch port and TC mounting.
It provides 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and 128kgf max at 1.0MPa. The -S magnet works with legacy CS1-B/DS1-B switches; the SAU replacement requires CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X300STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X300STC replacement — usually within 7-8 hours.