This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X670S, 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 SU40X670S
The AirTAC SU32~50 Standard Cylinder SU40X670S is a double-acting profile-type standard cylinder with a Ø40mm bore and 670mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X670S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke670 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X670S
- 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 SU40X670S
The AirTAC SU40X670S is a discontinued double-acting profile-type cylinder with a 40mm bore and 670mm stroke. Delivering 628 N push force at 0.5 MPa, it features an extruded aluminum barrel and adjustable air cushions. AirTAC replaced this EOL unit with the SAU40X670S, a direct replacement retaining the exact 1/4" port, M12x1.25 rod thread, and SC-series mounting.
Because this is a long 670mm stroke, external guides are recommended to prevent rod bending under side loads. The built-in magnet (-S) drove legacy CS1-B/DS1-B switches, whereas the SAU upgrade uses current CMSG/DMSG/EMSG sensors.
Airtac SU32~50 Standard Cylinder SU40X670S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X670S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X670S |
| Bore size | Ø40 mm |
| Stroke | 670 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 SAU40X670S 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 SAU40X670S 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 SU40X670S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×670 | 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 SU40X670S Is Used
Long-Stroke Diversion
Pushes packages across transfer lines with a 670mm reach, utilizing the 628 N push force at 0.5 MPa to overcome guide friction.
Material Ejection
Cycles parts out of a machining zone where the compact profile body saves space compared to older ISO standards.
Replacing the Airtac SU32~50 Standard Cylinder SU40X670S with the SAU40X670S
To replace this discontinued SU40X670S, order the SAU40X670S direct: it matches the 40mm bore, 670mm stroke, 1/4" port, and SC-series mounting. If your machine used the -S magnet, note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the SAU. For higher force needs, stepping up to a 50mm bore yields 982 N push at 0.5 MPa; stepping down to 32mm gives 402 N. A plain cylinder drifts on air loss—the cushions only decelerate—so use an external rod lock for held loads. Given the 670mm length, always use external guides to prevent rod bending. The SAU line also offers a SAUF variant with a built-in 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X670S
- ✓ 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 SU40X670S FAQ
Yes, the SU40X670S is discontinued. The direct replacement is the AirTAC SAU40X670S. It shares the same 40mm bore, 670mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application directly.
At 0.5 MPa it provides 628 N push and 528 N pull; at 0.7 MPa it pushes 879 N, and the theoretical max is 128 kgf at 1.0 MPa. The -S suffix means it has a magnet for legacy CS1-B/DS1-B switches; the SAU replacement requires current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X670S
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