This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X72S, 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 SU40X72S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X72S is a double-acting profile-type standard cylinder with a Ø40mm bore and 72mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X72S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke72 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X72S
- 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 SU40X72S
The AirTAC SU40X72S is a discontinued double-acting profile-type cylinder with a 40 mm bore and a 72 mm non-standard stroke. It delivers 628 N push force at 0.5 MPa. AirTAC replaced this unit with the SAU40X72S direct replacement, preserving the exact 1/4" port, M12x1.25 rod thread, output force and SC-series mounting footprint.
Because this is a non-standard 72 mm stroke, you must specify it precisely when ordering the SAU equivalent. The extruded aluminum profile body is more compact than an ISO 15552 cylinder of the same bore. Note the -S magnet on this legacy SKU worked with CS1-B/DS1-B switches, whereas the SAU replacement uses current CMSG/DMSG/EMSG sensors. The SAU family also introduces the SAUF variant with a built-in 4M solenoid valve, an option the original SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X72S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X72S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X72S |
| Bore size | Ø40 mm |
| Stroke | 72 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 SAU40X72S 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 SAU40X72S 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 SU40X72S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×72 | 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 SU40X72S Is Used
Short-Stroke Clamping
Ideal for holding light workpieces in machining fixtures where a 72 mm stroke provides rapid actuation and the 628 N force secures the part.
Package Diverting
Deploys a routing gate on a packaging line; the compact 40 mm profile body fits neatly within tight conveyor frame clearances.
Bin Push-Off
Ejects small components from sorting bins, utilizing the 32 kg safe vertical lift capacity to positively dislodge tangled parts.
Replacing the Airtac SU32~50 Standard Cylinder SU40X72S with the SAU40X72S
To replace this discontinued SU40X72S, order the SAU40X72S. Confirm the 40 mm bore, the non-standard 72 mm stroke, the 1/4" port (PT/G/NPT thread), and your SC-series mounting accessories (LB/FA/FB/CA/CB). Because this SKU includes the -S magnet, you must upgrade your sensors: the legacy CS1-B/DS1-B switches will not fit the SAU, so migrate to CMSG/DMSG/EMSG switches. If you need to adjust force, the neighboring 32 mm bore offers 402 N push at 0.5 MPa, while the 50 mm bore provides 982 N. A plain cylinder does not hold load without live air; the 21 mm cushions only decelerate, so add an external rod lock or pilot-operated check valve for secure holding. For applications needing integrated flow control, explore the SAUF valve-cylinder variant. Although 72 mm is short, always verify side-load alignment to prevent rod bending.
Replacement checklist
- ✓ Same bore / stroke → SAU40X72S
- ✓ 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 SU40X72S FAQ
Yes, the SU40X72S is discontinued. The direct replacement is the AirTAC SAU40X72S. It matches the 40 mm bore, 72 mm stroke, 1/4" port, force, and SC-series mounting. You simply order the SAU equivalent, but note that sensors must be upgraded from the old CS1-B/DS1-B to the current CMSG/DMSG/EMSG family.
The 40 mm bore uses a 1/4" port with an M12x1.25 rod thread. At 0.5 MPa it provides 628 N push and 528 N pull force. At 0.7 MPa the push force is 879 N, and at 0.9 MPa it is 1130 N. The theoretical maximum force is 128 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Request a Quote for the SAU40X72S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X72S replacement — usually within 7-8 hours.