This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X65, 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 SU40X65
The AirTAC Airtac SU32~50 Standard Cylinder SU40X65 is a double-acting profile-type standard cylinder with a Ø40mm bore and 65mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X65, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke65 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X65
- 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 SU40X65
The AirTAC SU40X65 is a discontinued double-acting profile-type cylinder with a 40 mm bore and 65 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU40X65, a direct upgrade retaining the exact bore, stroke, output force, and SC-series mounting footprint.
Because this SKU lacks a magnet, it cannot accept a position sensor. The SAU upgrade also drops the old CS1-B/DS1-B switches for modern CMSG/DMSG/EMSG sensors, and introduces the SAUF valve-integrated option the SU line never had.
Airtac SU32~50 Standard Cylinder SU40X65 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X65 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X65 |
| Bore size | Ø40 mm |
| Stroke | 65 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 SAU40X65 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 SAU40X65 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 SU40X65
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×65 | 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 SU40X65 Is Used
Small Part Ejection
Uses the 628 N push force at 0.5 MPa to reliably push finished light metal components out of a machining center.
Package Diverting
Actuates a routing gate on a packaging line, where the compact 65 mm stroke fits neatly between belt rollers.
Bin Pushing
Indexes small tote bins along gravity rollers, safely moving loads under the 32 kg vertical lift threshold.
Replacing the Airtac SU32~50 Standard Cylinder SU40X65 with the SAU40X65
To replace this SU40X65, order the SAU40X65 and verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting accessories. Since this specific SKU has no magnet (-S), it cannot support sensing; if you need switches on the SAU, you must select an -S model and use CMSG/DMSG/EMSG sensors. If you need higher force, the 50 mm bore offers 982 N push at 0.5 MPa; for lighter loads, the 32 mm bore provides 402 N. Note that a standard cylinder drifts without live air—the 21 mm cushions only decelerate the piston—so use an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X65
- ✓ 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 SU40X65 FAQ
Yes, the SU40X65 is discontinued. The direct replacement is the AirTAC SAU40X65. It matches the 40 mm bore, 65 mm stroke, 628 N force, 1/4" port, and SC-series mounting, so it drops right into the same application.
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa push is 879 N, at 0.9 MPa it is 1130 N, and the theoretical max is 128 kgf at 1.0 MPa. Because this specific SKU lacks a magnet, it cannot take a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches on its -S variants.
Request a Quote for the SAU40X65
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X65 replacement — usually within 7-8 hours.