This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X33, 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 SU40X33
The AirTAC Airtac SU32~50 Standard Cylinder SU40X33 is a double-acting profile-type standard cylinder with a Ø40mm bore and 33mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X33, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke33 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X33
- 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 SU40X33
The AirTAC SU40X33 is a discontinued double-acting profile-type cylinder with a 40mm bore and 33mm stroke. As a non-standard stroke, it delivered 628 N push force at 0.5 MPa through an extruded aluminum barrel, making it more compact than an ISO 15552 unit of the same bore. AirTAC replaced this end-of-life unit with the SAU40X33, a direct upgrade retaining the exact bore, stroke, 1/4" port, and SC-series mounting.
The SAU replacement introduces modern CMSG/DMSG/EMSG sensors, superseding the legacy CS1-B/DS1-B switches, and adds the SAUF built-in-valve option the SU line lacked. Note that this specific SKU lacks a magnet (-S) and cannot support sensing.
Airtac SU32~50 Standard Cylinder SU40X33 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X33 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X33 |
| Bore size | Ø40 mm |
| Stroke | 33 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 SAU40X33 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 SAU40X33 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 SU40X33
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×33 | 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 SU40X33 Is Used
Short-Stroke Clamping
Ideal for compact 33mm clamping actions in machining fixtures where 628 N of push force at 0.5 MPa secures components without bulk.
Package Diverting
Provides rapid 33mm actuation to divert light packages on a conveyor line, operating efficiently at 30-800 mm/s within tight spaces.
Replacing the Airtac SU32~50 Standard Cylinder SU40X33 with the SAU40X33
To replace the SU40X33, order the SAU40X33 direct equivalent, verifying your 1/4" port thread (PT, G, or NPT) and SC-series mounting hardware (LB, FA, FB, CA, CB, TC). Because this is a non-standard 33mm stroke, confirm your end-of-stroke clearances. If you need to upsize, the 50mm bore yields 982 N push at 0.5 MPa; downsizing to 32mm drops it to 402 N. This SKU has no magnet (-S) and cannot accept a sensor; if you require position detection on the SAU, you must order an -S variant and use CMSG/DMSG/EMSG switches. Remember that a standard cylinder drifts on air loss—the cushions only decelerate—so fit an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X33
- ✓ 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 SU40X33 FAQ
Yes, the AirTAC SU40X33 is discontinued. The direct replacement is the SAU40X33. It shares the identical 40mm bore, 33mm stroke, 628 N output force, 1/4" port, and SC-series mounting accessories, so it fits the same application directly.
At 0.5 MPa it provides 628 N push and 528 N pull force, 879 N push at 0.7 MPa, and a theoretical max of 128 kgf at 1.0 MPa. This specific SKU lacks a magnet and cannot accept a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches on -S models.
Request a Quote for the SAU40X33
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X33 replacement — usually within 7-8 hours.