This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X1050SN, 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 SU40X1050SN
The AirTAC SU32~50 Standard Cylinder SU40X1050SN is a double-acting profile-type standard cylinder with a Ø40mm bore and 1050mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X1050SN, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke1050 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X1050SN
- 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 SU40X1050SN
The AirTAC SU40X1050SN is a discontinued double-acting profile-type cylinder with a 40mm bore and 1050mm stroke. It delivers 628N push force at 0.5MPa and features an NBR seal for -20 to +70C operation. The 1050mm stroke exceeds the 1200mm standard maximum, classifying it as a nonstandard stroke. AirTAC replaced this legacy unit with the SAU40X1050SN, a direct replacement retaining the exact 1/4" port, M12x1.25 rod thread, and SC-series mounting.
This SU model includes a piston magnet for legacy CS1-B/DS1-B switches, but the SAU replacement upgrades this to current CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve, an option the SU line lacked. Note that the 1050mm stroke requires external guides to prevent rod bending under side loads.
Airtac SU32~50 Standard Cylinder SU40X1050SN Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X1050SN |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X1050SN |
| Bore size | Ø40 mm |
| Stroke | 1050 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 SAU40X1050SN 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 SAU40X1050SN 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 SU40X1050SN
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×1050 | 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 SU40X1050SN Is Used
Long-Stroke Diversion
Drives a 1050mm pusher arm to reroute heavy cartons on a packaging line, utilizing the 628N force at 0.5MPa with external linear guides to prevent rod bending.
Automated Press Ejection
Extracts formed parts from a press bed over a long distance, relying on the 21mm adjustable air cushions at both ends to decelerate the payload smoothly.
Replacing the Airtac SU32~50 Standard Cylinder SU40X1050SN with the SAU40X1050SN
To replace the SU40X1050SN, order the SAU40X1050SN direct equivalent, verifying the 1/4" port, PT/G/NPT thread choice, and SC-series mounting hardware. Because the 1050mm stroke is nonstandard and approaches the 1200mm limit, you must use external guides to prevent rod bending and absorb side loads. If downsizing, a 32mm bore offers 402N push at 0.5MPa; if upsizing, a 50mm bore provides 982N. The -S magnet means your legacy CS1-B/DS1-B switches will not fit the SAU replacement, which requires CMSG/DMSG/EMSG sensors. This cylinder does not hold load on air loss; use an external rod lock or pilot-operated check valve for holding. The SAUF built-in-valve option can simplify cycling if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X1050SN
- ✓ 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 SU40X1050SN FAQ
Yes, the SU40X1050SN is discontinued. The direct replacement is the AirTAC SAU40X1050SN. It shares the same 40mm bore, 1050mm stroke, 628N force at 0.5MPa, 1/4" port, and SC-series mounting, but the SAU uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
At 0.5MPa it provides 628N push and 528N pull force, increasing to 879N push at 0.7MPa and 1130N at 0.9MPa, with a theoretical max of 128kgf at 1.0MPa. The air cushions only decelerate the load near stroke end; the cylinder will not hold the load without live air, so use an external rod lock for holding.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X1050SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X1050SN replacement — usually within 7-8 hours.