This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X310, 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 SU40X310
The AirTAC SU32~50 Standard Cylinder SU40X310 is a double-acting profile-type standard cylinder with a Ø40mm bore and 310mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X310, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke310 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X310
- 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 SU40X310
The AirTAC SU40X310 is a discontinued double-acting profile cylinder with a 40 mm bore and 310 mm stroke. It delivers 628 N push force at 0.5 MPa and features an extruded aluminum barrel with adjustable air cushions at both ends. AirTAC replaced this unit with the SAU40X310, a direct replacement retaining the exact same body dimensions, 1/4" port, M12x1.25 rod thread, and SC-series mounting compatibility.
Because this SKU lacks a magnet, it cannot accept a position switch. The SAU upgrade introduces current CMSG/DMSG/EMSG sensors for its -S variants and offers a SAUF built-in 4M solenoid valve option the SU line never had.
Airtac SU32~50 Standard Cylinder SU40X310 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X310 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X310 |
| Bore size | Ø40 mm |
| Stroke | 310 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 SAU40X310 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 SAU40X310 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 SU40X310
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×310 | 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 SU40X310 Is Used
Package Diverting
Pushes medium-weight cartons off a sorting line using 628 N of thrust, with the 310 mm stroke clearing wider conveyor belts.
Pallet Stopper Gate
Acts as a pneumatic stop for incoming pallets, absorbing impact via the 21 mm adjustable cushions while holding position against drift.
Component Ejection
Ejects machined parts from a fixture, using the compact profile body to fit tight machine envelopes where space is restricted.
Replacing the Airtac SU32~50 Standard Cylinder SU40X310 with the SAU40X310
To replace the SU40X310, order the SAU40X310 and confirm your 1/4" port thread (PT, G, or NPT) alongside your SC-series mounting brackets (LB, FA, FB, CA, CB, or TC). Since this specific SKU has no magnet, it cannot support legacy CS1-B/DS1-B switches; if sensing is required, specify an SAU40X310-S and migrate to the modern CMSG/DMSG/EMSG sensor family. When sizing, check neighboring bores: a 32 mm bore provides 402 N push at 0.5 MPa (too light), while a 50 mm bore offers 982 N if you need more force. Note that a plain cylinder drifts without live air—the 21 mm cushions only decelerate at stroke end, so add an external rod lock or pilot-operated check valve for load holding. Finally, at 310 mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
- ✓ Same bore / stroke → SAU40X310
- ✓ 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 SU40X310 FAQ
Yes, the SU40X310 is discontinued. The direct replacement is the AirTAC SAU40X310. It matches the 40 mm bore, 310 mm stroke, 1/4" port, output force, and SC-series mounting accessories, dropping straight into the same application.
It delivers 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, and a theoretical max of 128 kgf at 1.0 MPa. This specific SKU lacks a magnet, so it cannot take legacy CS1-B/DS1-B switches; the SAU replacement uses CMSG/DMSG/EMSG sensors on its -S variants.
Request a Quote for the SAU40X310
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X310 replacement — usually within 7-8 hours.