This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X840S, 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 SU50X840S
The AirTAC SU32~50 Standard Cylinder SU50X840S is a double-acting profile-type standard cylinder with a Ø50mm bore and 840mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X840S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke840 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X840S
- 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 SU50X840S
The AirTAC SU50X840S is a discontinued double-acting profile-type cylinder with a 50mm bore and 840mm stroke. It delivers 982N push and 825N pull at 0.5MPa. The direct replacement is the SAU50X840S, matching the exact bore, stroke, force, 1/4" port and SC-series mounting.
The SAU upgrade reuses the compact extruded aluminum body but switches the -S magnet to modern CMSG/DMSG/EMSG sensors (replacing legacy CS1-B/DS1-B), and introduces a SAUF valve-integrated option.
Airtac SU32~50 Standard Cylinder SU50X840S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X840S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X840S |
| Bore size | Ø50 mm |
| Stroke | 840 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 SAU50X840S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X840S 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 SU50X840S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×840 | 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 SU50X840S Is Used
Long-Reach Diversion
Actuates routing gates on extended conveyor lines where the 840mm stroke clears wide product lanes.
Multi-Stage Ejection
Pushes finished parts completely out of an extended machining envelope using the full 840mm travel.
Replacing the Airtac SU32~50 Standard Cylinder SU50X840S with the SAU50X840S
To replace this SU50X840S with the SAU50X840S, verify the 50mm bore, 840mm stroke, 1/4" port, M16x1.5 rod thread and SC-series mounting. Because the -S magnet is present, prepare to upgrade from CS1-B/DS1-B switches to the SAU's CMSG/DMSG/EMSG sensors. If your application needs self-switching, consider the SAUF variant with a built-in 4M valve. At 840mm, this long stroke requires external guides to prevent rod bending under side loads. For sizing alternatives, a 40mm bore offers 628N push at 0.5MPa, while a 63mm bore provides 1559N. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU50X840S
- ✓ 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 SU50X840S FAQ
Yes, the AirTAC SU50X840S is discontinued. The direct replacement is the SAU50X840S. It provides identical bore, stroke, output force, 1/4" port size, and SC-series mounting compatibility, fitting the same application envelope.
This 50mm bore cylinder delivers 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a 200kgf maximum at 1.0MPa. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; when upgrading to the SAU replacement, you must use current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X840S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X840S replacement — usually within 7-8 hours.