This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X225, 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 SU40X225
The AirTAC SU32~50 Standard Cylinder SU40X225 is a double-acting profile-type standard cylinder with a Ø40mm bore and 225mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X225, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X225
- 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 SU40X225
The AirTAC SU40X225 is a discontinued double-acting profile-type cylinder with a 40mm bore and 225mm stroke. It delivers 628 N push and 528 N pull at 0.5 MPa, operating at 30-800 mm/s through a 1/4" port. AirTAC replaced this EOL unit with the SAU40X225, a direct sharing the exact bore, stroke, output force, port size, and SC-series mounting accessories.
Because this SKU lacks a magnet, it cannot accept a sensor; furthermore, the SAU upgrade switches to current CMSG/DMSG/EMSG switches if you add an -S version later. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve the SU never offered.
Airtac SU32~50 Standard Cylinder SU40X225 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X225 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X225 |
| Bore size | Ø40 mm |
| Stroke | 225 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 SAU40X225 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 SAU40X225 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 SU40X225
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 SU40X225 Is Used
Package Diverting
Actuates diverting arms on packaging lines where 628 N push at 0.5 MPa reliably redirects medium-weight cartons without bounce.
Pallet Stops
Raises and lowers end-of-line pallet stops; the 225mm stroke clears pallet forks while the compact profile saves floor space.
Clamp Actuation
Drives secondary clamps on machining fixtures, providing 528 N pull at 0.5 MPa to hold workpieces firmly during light milling.
Replacing the Airtac SU32~50 Standard Cylinder SU40X225 with the SAU40X225
To replace the SU40X225, order the SAU40X225. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) stay identical. This non-magnet SKU cannot take a switch; if sensing is needed, specify an SAU40X225-S and migrate to CMSG/DMSG/EMSG sensors, as the old CS1-B/DS1-B are obsolete. For sizing both ways: a 32mm bore yields 402 N push at 0.5 MPa (too light), while a 50mm bore yields 982 N. At 225mm stroke, side-load and rod-bending risks are moderate; ensure guide rails support the load. A plain cylinder drifts on air loss—the cushion only decelerates end-of-stroke—so add an external rod lock or pilot-operated check valve for strict holding. The SAUF valve-integrated option can simplify cycle plumbing if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X225
- ✓ 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 SU40X225 FAQ
Yes, the AirTAC SU40X225 is discontinued and end-of-life. The direct replacement is the SAU40X225. It shares the identical 40mm bore, 225mm stroke, 628 N push force at 0.5 MPa, 1/4" port, and SC-series mounting accessories, fitting the same application directly.
The double-acting cylinder outputs 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a theoretical max of 128 kgf at 1.0 MPa. This specific SKU has no magnet (-S) and cannot accept a sensor. If you need sensing on the SAU replacement, you must order an -S model and use CMSG/DMSG/EMSG switches, as the legacy CS1-B/DS1-B switches are obsolete.
Request a Quote for the SAU40X225
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X225 replacement — usually within 7-8 hours.