This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X525S, 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 SU40X525S
The AirTAC SU32~50 Standard Cylinder SU40X525S is a double-acting profile-type standard cylinder with a Ø40mm bore and 525mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X525S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke525 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X525S
- 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 SU40X525S
The AirTAC SU40X525S is a discontinued double-acting profile-type cylinder with a 40mm bore and 525mm stroke. It features an extruded aluminum barrel and adjustable air cushions, making it more compact than an ISO 15552 cylinder of the same bore. It delivers 628N push force at 0.5MPa via a 1/4" port.
The direct replacement is the SAU40X525S, which matches the bore, stroke, force, port, and SC-series mounting. The SAU upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this -S model, and adds a SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X525S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X525S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X525S |
| Bore size | Ø40 mm |
| Stroke | 525 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 SAU40X525S 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 SAU40X525S 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 SU40X525S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×525 | 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 SU40X525S Is Used
Carton Diverting
Pushes packages laterally on a conveyor line using a 628N push force at 0.5MPa, with the 525mm stroke spanning wider belts.
Pallet Positioning
Shifts light pallets into alignment before wrapping, utilizing the compact profile body to fit tight conveyor framework.
Replacing the Airtac SU32~50 Standard Cylinder SU40X525S with the SAU40X525S
To replace this SU40X525S with the SAU40X525S, confirm the 40mm bore, 525mm stroke, 1/4" port, M12x1.25 rod thread, and SC-series mounting. Because this is an -S model, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If you need a smaller bore, the 32mm offers 402N at 0.5MPa; for more force, the 50mm provides 982N. The 525mm stroke requires an external guide to prevent rod bending under side loads. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock for held loads. The SAUF variant offers a built-in 4M solenoid valve if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X525S
- ✓ 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 SU40X525S FAQ
Yes, the SU40X525S is discontinued. The direct replacement is the SAU40X525S. It shares the same 40mm bore, 525mm stroke, 628N force, 1/4" port, and SC-series mounting accessories. The main upgrade is that the SAU uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 40mm bore uses a 1/4" port. It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and 1130N push at 0.9MPa. The theoretical maximum force is 128kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X525S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X525S replacement — usually within 7-8 hours.