This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X650STC, 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 SU40X650STC
The AirTAC SU32~50 Standard Cylinder SU40X650STC is a double-acting profile-type standard cylinder with a Ø40mm bore and 650mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X650STC, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke650 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X650STC
- 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 SU40X650STC
The AirTAC SU40X650STC is a discontinued double-acting profile-type cylinder with a 40mm bore and 650mm stroke. Delivering 628N push force at 0.5MPa via a 1/4" port, its extruded aluminum body is more compact than an ISO 15552 unit of the same bore. AirTAC replaced it with the SAU40X650STC direct: identical bore, stroke, force, port, and SC-series mounting.
The SAU upgrade switches the legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors, and introduces the SAUF built-in valve option the SU line lacked. Note that standard cushions only decelerate; they do not hold loads without live air.
Airtac SU32~50 Standard Cylinder SU40X650STC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X650STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X650STC |
| Bore size | Ø40 mm |
| Stroke | 650 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 SAU40X650STC 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 SAU40X650STC 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 SU40X650STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×650 | 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 SU40X650STC Is Used
TC-Mount Transfer
Pivots using the TC trunnion interface to shift components between parallel assembly stations.
Replacing the Airtac SU32~50 Standard Cylinder SU40X650STC with the SAU40X650STC
To replace this SU40X650STC, order the SAU40X650STC, confirming the 40mm bore, 650mm stroke, 1/4" port, M12x1.25 rod thread, and TC mounting. Because the -S magnet is present, you must upgrade your sensors: the old CS1-B/DS1-B switches will not fit the SAU groove, so use CMSG/DMSG/EMSG sensors. For the 650mm stroke, use an external guide to prevent rod bending and side loads. If moving down to a 32mm bore yields insufficient force (402N push at 0.5MPa), keep the 40mm; if you need more power, a 50mm bore offers 982N. This cylinder will drift on air loss, so fit an external rod lock or pilot-operated check valve for load holding. The SAUF variant adds a built-in 4M solenoid valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X650STC
- ✓ 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 SU40X650STC FAQ
Yes, the SU40X650STC is discontinued. The direct replacement is the SAU40X650STC. It shares the same 40mm bore, 650mm stroke, 628N force, 1/4" port, and SC-series TC mounting. You simply order the SAU model for an identical mechanical fit.
The 40mm bore provides 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and a 128kgf maximum at 1.0MPa. Because this model has the -S magnet, it used legacy CS1-B/DS1-B switches. The SAU replacement requires upgrading to CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X650STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X650STC replacement — usually within 7-8 hours.