This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X125TC, 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 SU40X125TC
The AirTAC SU32~50 Standard Cylinder SU40X125TC is a double-acting profile-type standard cylinder with a Ø40mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X125TC, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X125TC
- 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 SU40X125TC
The AirTAC SU40X125TC is a discontinued double-acting profile-type cylinder featuring a 40mm bore and 125mm stroke. It delivers 628N push force at 0.5MPa through a 1/4" port. AirTAC replaced this unit with the SAU40X125TC, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series TC mounting interface.
Because the body is an extruded aluminum profile rather than a standard ISO tie-rod design, it is more compact than equivalent cylinders. Note this specific SKU lacks a magnet and cannot accept sensors. The SAU upgrade switches to current CMSG/DMSG/EMSG switches and introduces the SAUF built-in valve option.
Airtac SU32~50 Standard Cylinder SU40X125TC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X125TC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X125TC |
| Bore size | Ø40 mm |
| Stroke | 125 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 SAU40X125TC 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 SAU40X125TC 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 SU40X125TC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 SU40X125TC Is Used
Package Diverting
Actuates TC-mounted routing gates on packaging lines, using the 628N push force to redirect cartons at 30-800 mm/s without exceeding safe load limits.
Clamp Actuation
Secures light workpieces during machining via the compact profile body, fitting tight cell envelopes while delivering 528N pull force.
Replacing the Airtac SU32~50 Standard Cylinder SU40X125TC with the SAU40X125TC
To replace this discontinued SU40X125TC, order the SAU40X125TC. Verify your 1/4" port thread (PT, G, or NPT), M12x1.25 rod end, and TC mounting accessory. Since this SKU has no magnet (-S), it cannot support sensing; if you need position detection on the SAU, specify the -S option and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For sizing, a 32mm bore yields 402N push at 0.5MPa, while a 50mm bore yields 982N. At 125mm stroke, side-load is minimal, but always guide the rod to prevent bending. A plain cylinder drifts on air loss; the 21mm cushion only decelerates. For held loads, add an external rod lock or pilot-operated check valve. The SAUF valve-integrated variant is available if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X125TC
- ✓ 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 SU40X125TC FAQ
Yes, the SU40X125TC is discontinued. The direct replacement is the AirTAC SAU40X125TC. It matches the 40mm bore, 125mm stroke, 628N force, 1/4" port, and TC mounting. You simply order the SAU equivalent.
At 0.5 MPa it pushes 628N and pulls 528N; at 0.7 MPa it pushes 879N, with a 1130N push at 0.9 MPa and a 128 kgf max at 1.0 MPa. The 21mm cushions only decelerate the piston; they do not hold loads on air loss. Use an external rod lock for holding.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X125TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X125TC replacement — usually within 7-8 hours.