This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X70, 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 SU40X70
The AirTAC Airtac SU32~50 Standard Cylinder SU40X70 is a double-acting profile-type standard cylinder with a Ø40mm bore and 70mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X70, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke70 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X70
- 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 SU40X70
The AirTAC SU40X70 is a discontinued double-acting profile-type cylinder with a 40 mm bore and 70 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this unit with the SAU40X70, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series mounting footprint.
The SAU upgrade introduces current CMSG/DMSG/EMSG sensors and a SAUF built-in-valve option the SU line lacked. This non-magnet SKU cannot accept a sensor. Note that the cushion only decelerates; use an external rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU40X70 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X70 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X70 |
| Bore size | Ø40 mm |
| Stroke | 70 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 SAU40X70 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 SAU40X70 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 SU40X70
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 SU40X70 Is Used
Package Diverting
Provides reliable actuation for routing small cartons on a line, utilizing the 628 N push force at 0.5 MPa.
Stopper Gate Control
Acts as a compact profile-body stopper for item accumulation, easily reusing existing SC-series mounting brackets.
Replacing the Airtac SU32~50 Standard Cylinder SU40X70 with the SAU40X70
To replace the SU40X70, order the SAU40X70 direct equivalent, confirming the 1/4" port, M12x1.25 rod thread, and SC-series mounting accessories. If downsizing from a 50 mm bore, note the 50 mm offers 982 N push at 0.5 MPa; if upsizing from 32 mm, that bore provides 402 N. This non-magnet SKU cannot take a switch; if sensing is needed, specify an SAU -S model and migrate from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG switches. For self-switching needs, explore the SAUF variant with its integrated 4M solenoid valve. Remember, the cushion decelerates but does not hold loads—add a pilot-operated check valve for drift prevention.
Replacement checklist
- ✓ Same bore / stroke → SAU40X70
- ✓ 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 SU40X70 FAQ
Yes, the AirTAC SU40X70 is discontinued. The direct replacement is the SAU40X70. It shares the same 40 mm bore, 70 mm stroke, 628 N force, 1/4" port, and SC-series mounting, so it fits your existing application directly.
At 0.5 MPa it provides 628 N push and 528 N pull force, 879 N push at 0.7 MPa, and a theoretical max of 128 kgf at 1.0 MPa. This specific SKU lacks a magnet, so it cannot accept a sensor; upgrading to an SAU -S model requires CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X70
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X70 replacement — usually within 7-8 hours.