This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X270S, 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 SU40X270S
The AirTAC SU32~50 Standard Cylinder SU40X270S is a double-acting profile-type standard cylinder with a Ø40mm bore and 270mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X270S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke270 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X270S
- 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 SU40X270S
The AirTAC SU40X270S is a discontinued double-acting profile-type cylinder with a 40mm bore and 270mm stroke. It delivers 628N push and 528N pull at 0.5MPa. The direct replacement is the SAU40X270S, matching the exact bore, stroke, 1/4" port, and SC-series mounting accessories.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this unit's legacy CS1-B/DS1-B switches, and adds the SAUF built-in 4M solenoid valve variant. A plain cylinder drifts without live air; the 21mm cushions only decelerate, so use an external rod lock for holding.
Airtac SU32~50 Standard Cylinder SU40X270S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X270S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X270S |
| Bore size | Ø40 mm |
| Stroke | 270 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 SAU40X270S 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 SAU40X270S 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 SU40X270S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×270 | 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 SU40X270S Is Used
Package Diverting
Pushes medium-weight cartons on a 270mm stroke with a safe 377N working load, using the 21mm cushions to stop smoothly.
Clamp Actuation
Clamps workpieces at machining stations, providing 628N of push force at 0.5MPa while fitting into compact profile spaces.
Replacing the Airtac SU32~50 Standard Cylinder SU40X270S with the SAU40X270S
To replace this SU40X270S, order the SAU40X270S keeping the 40mm bore, 270mm stroke, 1/4" port, M12x1.25 rod thread, and SC-series mounts. Because this SKU has the -S magnet, you must upgrade your sensors from the old CS1-B/DS1-B to the current CMSG/DMSG/EMSG family. If you need integrated flow control, the SAUF variant adds a built-in valve. For loads needing 879N at 0.7MPa, step up to a 50mm bore; if 377N is enough, a 32mm bore works. At 270mm stroke, guide the load to prevent rod bending. Remember, cushions only decelerate; for load holding on air loss, install a pilot-operated check valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X270S
- ✓ 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 SU40X270S FAQ
Yes, the SU40X270S is discontinued. The direct replacement is the SAU40X270S, which shares the same 40mm bore, 270mm stroke, 1/4" port, output force, and SC-series mounting. You just order the SAU equivalent.
It provides 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and a 128kgf max at 1.0MPa. Because this model has the -S magnet, note that the SAU replacement switches from the old CS1-B/DS1-B switches to the new CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X270S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X270S replacement — usually within 7-8 hours.