This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X850STC, 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 SU40X850STC
The AirTAC SU32~50 Standard Cylinder SU40X850STC is a double-acting profile-type standard cylinder with a Ø40mm bore and 850mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X850STC, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke850 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X850STC
- 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 SU40X850STC
The AirTAC SU40X850STC is a discontinued double-acting profile-type cylinder with an 850 mm stroke. As a non-standard stroke exceeding the 1200 mm bore limit, it delivers 628 N push force at 0.5 MPa through a 1/4" port. The direct replacement is the SAU40X850STC, matching the bore, stroke, force, port, and SC-series TC mounting exactly.
This SU unit features a built-in piston magnet for legacy CS1-B/DS1-B switches, whereas the SAU successor uses modern CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve, an option the SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X850STC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X850STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X850STC |
| Bore size | Ø40 mm |
| Stroke | 850 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 SAU40X850STC 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 SAU40X850STC 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 SU40X850STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×850 | 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 SU40X850STC Is Used
Extended Transfer Push
Pushes components between workstations over an 850 mm gap, utilizing the 628 N thrust at 0.5 MPa to move moderate loads smoothly along the production line.
Replacing the Airtac SU32~50 Standard Cylinder SU40X850STC with the SAU40X850STC
To replace this discontinued SU40X850STC, order the SAU40X850STC ensuring the 40 mm bore, 850 mm stroke, 1/4" port, and TC mounting match your existing setup. If your application requires holding a load without live air, note that neither the SU nor SAU acts as a lock; the air cushion only decelerates the piston near the stroke ends, so you must install an external rod lock or pilot-operated check valve. Because the 850 mm stroke is long and non-standard, use an external guide to prevent rod bending and side-load damage. If downsizing, a 32 mm bore offers 402 N push at 0.5 MPa; if upsizing, a 50 mm bore provides 982 N. Remember the -S magnet requires upgrading from CS1-B/DS1-B to CMSG/DMSG/EMSG sensors on the SAU.
Replacement checklist
- ✓ Same bore / stroke → SAU40X850STC
- ✓ 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 SU40X850STC FAQ
Yes, the SU40X850STC is discontinued. The direct replacement is the SAU40X850STC. It shares the same 40 mm bore, 850 mm stroke, 628 N push force at 0.5 MPa, 1/4" port, and TC mounting interface, fitting directly into your existing application.
At 0.5 MPa it provides 628 N push and 528 N pull force, increasing to 879 N push at 0.7 MPa, with a theoretical max of 128 kgf at 1.0 MPa. This -S model includes a magnet for legacy CS1-B/DS1-B switches; when upgrading to the SAU replacement, you must switch to current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X850STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X850STC replacement — usually within 7-8 hours.