This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X265S, 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 SU40X265S
The AirTAC SU32~50 Standard Cylinder SU40X265S is a double-acting profile-type standard cylinder with a Ø40mm bore and 265mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X265S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke265 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X265S
- 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 SU40X265S
The AirTAC SU40X265S is a discontinued double-acting profile-type cylinder with a 40mm bore and 265mm stroke. Delivering 628N push force at 0.5MPa via a 1/4" port, its extruded aluminum body is more compact than an ISO 15552 unit. AirTAC replaced it with the SAU40X265S direct replacement, matching the exact bore, stroke, force, port, and SC-series mounting.
This -S magnet model originally used legacy CS1-B/DS1-B switches, whereas the SAU replacement adopts current CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF built-in-valve variant the SU lacked. Note that the cushion only decelerates; use an external rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU40X265S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X265S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X265S |
| Bore size | Ø40 mm |
| Stroke | 265 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 SAU40X265S 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 SAU40X265S 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 SU40X265S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×265 | 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 SU40X265S Is Used
Component Clamping
Secures medium-weight machining fixtures with 628N of push force at 0.5MPa, providing stable holding during automated milling or drilling processes.
Package Diverting
Extends 265mm to push中等重量 cartons off a main conveyor belt line, utilizing the compact profile body to fit within tight transfer station clearances.
Replacing the Airtac SU32~50 Standard Cylinder SU40X265S with the SAU40X265S
To replace this SU40X265S, order the SAU40X265S direct: verify the 40mm bore, 265mm stroke, 1/4" port, M12x1.25 rod thread, and SC-series mounting. Because this has the -S magnet, you must upgrade from legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. If you need self-switching, explore the SAUF valve-integrated option. For sizing, a 32mm bore yields 402N push at 0.5MPa, while a 50mm bore yields 982N; this 40mm bore provides 628N push and 528N pull. At 265mm stroke, ensure adequate guide support to prevent rod bending under side loads. The air cushion decelerates but does not lock; for suspended loads, add a pilot-operated check valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X265S
- ✓ 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 SU40X265S FAQ
Yes, the SU40X265S is discontinued. The direct replacement is the AirTAC SAU40X265S. It shares the identical 40mm bore, 265mm stroke, 628N force, 1/4" port, and SC-series mounting accessories, but requires upgrading your -S magnet sensors from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG family.
This double-acting cylinder features a 1/4" air port and delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical maximum of 128kgf at 1.0MPa. It operates at 30-800mm/s with a 21mm adjustable cushion at both ends.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X265S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X265S replacement — usually within 7-8 hours.