This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X205, 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 SU40X205
The AirTAC Airtac SU32~50 Standard Cylinder SU40X205 is a double-acting profile-type standard cylinder with a Ø40mm bore and 205mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X205, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke205 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X205
- 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 SU40X205
The AirTAC SU40X205 is a discontinued double-acting profile-type cylinder with a 40mm bore and 205mm stroke. It delivers 628N push force at 0.5MPa through a 1/4-inch port. AirTAC replaced this legacy unit with the SAU40X205, a direct alternative retaining the exact bore, stroke, force, port size, and SC-series mounting.
Buyers gain two upgrades: the SAU uses current CMSG/DMSG/EMSG sensors (this non-magnetic SU cannot accept a switch anyway), and the SAUF variant adds a built-in 4M valve the SU lacked. The extruded aluminum body is shorter than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU40X205 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X205 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X205 |
| Bore size | Ø40 mm |
| Stroke | 205 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 SAU40X205 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 SAU40X205 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 SU40X205
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×205 | 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 SU40X205 Is Used
Component Clamping
Secures mid-weight machined parts during drilling, delivering 628N of clamping thrust at 0.5MPa within a compact fixture envelope.
Package Diverting
Actuates a 205mm stroke diverting arm to push cartons between adjacent conveyor belts without requiring external tie-rod space.
Pallet Stopping
Deploys a 205mm stop gate to halt incoming pallets at a packing station, safely absorbing kinetic energy via adjustable end cushions.
Replacing the Airtac SU32~50 Standard Cylinder SU40X205 with the SAU40X205
To replace this SU40X205, order the SAU40X205. Confirm the 1/4-inch port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) match your jig. Because this SKU lacks the -S magnet, it cannot accept a sensor; if you need position detection, the SAU replacement requires CMSG/DMSG/EMSG switches. For loads needing 879N at 0.7MPa, the 50mm bore offers more thrust, while the 32mm bore provides 402N for lighter tasks. At 205mm stroke, guide rods are recommended to prevent side-load bending. Note that a standard cylinder drifts on air loss; use an external rod lock or pilot-operated check valve for load holding, as cushions only decelerate.
Replacement checklist
- ✓ Same bore / stroke → SAU40X205
- ✓ 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 SU40X205 FAQ
Yes, the SU40X205 is discontinued. The direct replacement is the AirTAC SAU40X205. It matches the 40mm bore, 205mm stroke, 628N force, 1/4-inch port, and SC-series mounting, so it fits the same application directly.
It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. This specific SKU has no -S magnet and cannot accept a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches for position detection.
Request a Quote for the SAU40X205
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X205 replacement — usually within 7-8 hours.