This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X280, 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 SU40X280
The AirTAC SU32~50 Standard Cylinder SU40X280 is a double-acting profile-type standard cylinder with a Ø40mm bore and 280mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X280, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke280 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X280
- 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 SU40X280
The AirTAC SU40X280 is a discontinued double-acting profile-type cylinder with a 40mm bore and 280mm stroke. It delivers 628N push force at 0.5MPa via a 1/4" port. AirTAC replaced this legacy unit with the SAU40X280, a direct upgrade retaining the exact bore, stroke, output force, and SC-series mounting footprint.
Because this specific SKU lacks a magnet, it cannot accept any sensing switches. The SAU replacement modernizes the sensor groove for CMSG/DMSG/EMSG switches if you add an -S option later, and introduces the SAUF built-in 4M valve variant.
Airtac SU32~50 Standard Cylinder SU40X280 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X280 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X280 |
| Bore size | Ø40 mm |
| Stroke | 280 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 SAU40X280 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 SAU40X280 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 SU40X280
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 SU40X280 Is Used
Package Diverting
Pushes light to medium cartons on a sorting line where 628N of thrust at 0.5MPa provides ample force for 280mm travel.
Small Press Ejection
Ejects formed parts from a press bed using the 16mm rod, relying on adjustable 21mm cushions to brake at stroke end.
Replacing the Airtac SU32~50 Standard Cylinder SU40X280 with the SAU40X280
To replace this discontinued SU40X280, order the SAU40X280. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). This non-magnetic SKU cannot hold a sensor; if you need position detection, specify the SAU40X280S and use CMSG/DMSG/EMSG switches (the old CS1-B/DS1-B are obsolete). At 280mm stroke, prevent side-load rod-bending by guiding the load. If stepping up to a 50mm bore yields 982N push at 0.5MPa, while a 32mm bore drops to 402N. Note: air cushions only decelerate; use an external rod lock or pilot-operated check valve to hold loads on air loss.
Replacement checklist
- ✓ Same bore / stroke → SAU40X280
- ✓ 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 SU40X280 FAQ
Yes, the SU40X280 is discontinued. The direct replacement is the SAU40X280. It matches the 40mm bore, 280mm stroke, 628N push force at 0.5MPa, 1/4" port, and SC-series mounting accessories, so it fits the same application without modification.
At 0.5MPa it pushes 628N and pulls 528N; at 0.7MPa it pushes 879N, and the theoretical maximum is 128kgf at 1.0MPa. This specific SKU has no magnet and cannot take a sensor. If you need detection, order the SAU40X280S replacement which uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X280
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X280 replacement — usually within 7-8 hours.