This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X45, 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 SU40X45
The AirTAC Airtac SU32~50 Standard Cylinder SU40X45 is a double-acting profile-type standard cylinder with a Ø40mm bore and 45mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X45, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke45 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X45
- 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 SU40X45
The AirTAC SU40X45 is a discontinued double-acting profile-type cylinder with a 40mm bore and 45mm stroke. It delivers 628 N push and 528 N pull at 0.5 MPa, operating via a 1/4" port. The direct replacement is the SAU40X45, matching the exact body, stroke, force, and SC-series mounting footprint.
This compact extruded-aluminium body is shorter than a standard ISO 15552 unit of the same bore. Note this non-magnetic SKU cannot accept a sensor; furthermore, the SAU upgrade switches to CMSG/DMSG/EMSG switches and adds a SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X45 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X45 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X45 |
| Bore size | Ø40 mm |
| Stroke | 45 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 SAU40X45 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 SAU40X45 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 SU40X45
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SU40X45 Is Used
Small Part Clamping
Ideal for holding light machining or assembly components securely, utilising the 628 N push force at 0.5 MPa without deforming the workpiece.
Package Diverting
Provides reliable stroke action for routing small cartons or products on a line, taking advantage of the compact 40mm profile body.
Light Material Ejection
Effectively pushes lightweight finished goods or bins out of a processing station using the 45mm stroke and 528 N pull force.
Replacing the Airtac SU32~50 Standard Cylinder SU40X45 with the SAU40X45
To replace this discontinued SU40X45, order the SAU40X45. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). Because this is a non-magnetic SKU, it cannot accept a sensor; if you need position detection, the SAU replacement requires CMSG/DMSG/EMSG switches. For sizing, a 32mm bore yields 402 N push at 0.5 MPa, while a 50mm bore yields 982 N. Remember, a plain cylinder drifts on air loss—the 21mm cushions only decelerate near stroke end, so use an external rod lock or pilot-operated check valve for held loads. The SAUF valve-integrated variant is available if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X45
- ✓ 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 SU40X45 FAQ
Yes, the AirTAC SU40X45 is discontinued. The direct replacement is the SAU40X45. It matches the original 40mm bore, 45mm stroke, 628 N force, 1/4" port, and SC-series mounting accessories exactly, making it a direct fit.
The force ratings are 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. It cannot hold a load without live air; the 21mm adjustable cushions only decelerate the piston near stroke end. For load holding, use an external rod lock or pilot-operated check valve.
Request a Quote for the SAU40X45
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X45 replacement — usually within 7-8 hours.