This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X145, 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 SU40X145
The AirTAC Airtac SU32~50 Standard Cylinder SU40X145 is a double-acting profile-type standard cylinder with a Ø40mm bore and 145mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X145, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke145 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X145
- 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 SU40X145
The AirTAC SU40X145 is a discontinued double-acting profile-type cylinder with a 40 mm bore and 145 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this unit with the SAU40X145, a direct replacement retaining the exact bore, stroke, force, port size, and SC-series mounting.
Because this SKU lacks a magnet (-S), it cannot accept a position sensor. The SAU upgrade introduces CMSG/DMSG/EMSG sensor compatibility for its magnetic variants, plus a new SAUF built-in-valve option the SU line never had.
Airtac SU32~50 Standard Cylinder SU40X145 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X145 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X145 |
| Bore size | Ø40 mm |
| Stroke | 145 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 SAU40X145 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 SAU40X145 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 SU40X145
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×145 | 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 SU40X145 Is Used
Package Diverting
Actuates diverting arms on packaging lines using the 628 N push force to redirect cartons reliably at 30-800 mm/s.
Pallet Stops
Controls pallet flow on low-profile conveyors where the 40 mm extruded body fits tight transfer spaces.
Clamp Actuation
Drives mid-force clamping fixtures holding workpieces up to 32 kg safely during light machining operations.
Replacing the Airtac SU32~50 Standard Cylinder SU40X145 with the SAU40X145
To replace this discontinued SU40X145, order the SAU40X145. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) stay the same. Since this specific SKU has no magnet, it cannot hold a sensor; if you need position detection on the SAU, order the -S version and switch to CMSG/DMSG/EMSG switches. For load holding, note that standard air cushions only decelerate; use an external rod lock or pilot-operated check valve to prevent drift. If sizing alternatives, a 32 mm bore yields 402 N push at 0.5 MPa, while a 50 mm bore yields 982 N. With a 145 mm stroke, ensure guide rails carry side loads to prevent rod bending.
Replacement checklist
- ✓ Same bore / stroke → SAU40X145
- ✓ 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 SU40X145 FAQ
Yes, the SU40X145 is discontinued. The direct replacement is the AirTAC SAU40X145. It matches the 40 mm bore, 145 mm stroke, 628 N force, 1/4" port, and SC-series mounting perfectly.
It provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a 128 kgf max at 1.0 MPa. Because this SKU lacks a magnet, it cannot take sensors; the SAU replacement uses CMSG/DMSG/EMSG switches on its -S variants.
Request a Quote for the SAU40X145
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X145 replacement — usually within 7-8 hours.