This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X875S, 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 SU40X875S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X875S is a double-acting profile-type standard cylinder with a Ø40mm bore and 875mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X875S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke875 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X875S
- 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 SU40X875S
The AirTAC SU40X875S is a discontinued double-acting profile cylinder with a 40mm bore and 875mm stroke. It delivers 628N push force at 0.5MPa. AirTAC replaced this with the SAU40X875S, a direct upgrade sharing the same bore, stroke, output force, 1/4" port, and SC-series mounting accessories.
The SAU upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this -S SKU, and introduces the SAUF built-in-valve variant. The extruded aluminum profile is more compact than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU40X875S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X875S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X875S |
| Bore size | Ø40 mm |
| Stroke | 875 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 SAU40X875S 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 SAU40X875S 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 SU40X875S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×875 | 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 SU40X875S Is Used
Long-Stroke Diversion
Pushes packages across transfer lines using the 875mm reach, relying on external guides to prevent rod bending during lateral extension.
Material Ejection
Ejects machined parts from a fixture, taking advantage of the 628N push force and adjustable end cushions to stop smoothly.
Replacing the Airtac SU32~50 Standard Cylinder SU40X875S with the SAU40X875S
To replace this SU40X875S with the SAU40X875S, confirm the 40mm bore, 875mm stroke, 1/4" port, M12x1.25 rod thread, and SC-series mounting. Because this -S model has a magnet, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If sizing alternatives, a 32mm bore yields 402N push while a 50mm bore yields 982N at 0.5MPa. For this 875mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts without live air; the cushion only decelerates, so add an external rod lock for held loads. The SAUF valve-integrated option can simplify cycling.
Replacement checklist
- ✓ Same bore / stroke → SAU40X875S
- ✓ 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 SU40X875S FAQ
Yes, the AirTAC SU40X875S is discontinued. The direct replacement is the SAU40X875S. It matches the 40mm bore, 875mm stroke, 628N force, 1/4" port, and SC-series mounting. You just order the SAU40X875S.
The SAU40X875S delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a 128kgf max at 1.0MPa. Because your SU had an -S magnet, the legacy CS1-B/DS1-B switches are replaced by current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X875S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X875S replacement — usually within 7-8 hours.