This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X800-75S, 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 SUJ Adjustable Cylinder SUJ40X800-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X800-75S is a double-acting profile-type standard cylinder with a Ø40mm bore and 800mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X800-75S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke800 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X800-75S
- 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 SUJ Adjustable Cylinder SUJ40X800-75S
The AirTAC SUJ40X800-75S is a double-acting, double-rod profile cylinder with an on-site stroke-trim window. An external stop screw shortens the extend stroke by up to 75 mm, giving a usable 725-800 mm range from the 800 mm nominal maximum. This stop sets the end position but is not a load lock.
This SUJ model is discontinued; the direct replacement is the SAUJ40X800-75S, matching the bore, stroke, force, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this unit uses legacy CS1-B/DS1-B switches.
Airtac SUJ Adjustable Cylinder SUJ40X800-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X800-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X800-75S |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAUJ40X800-75S 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 SAUJ40X800-75S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ40X800-75S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SUJ Adjustable Cylinder SUJ40X800-75S Is Used
Variable-Length Ejector
Tuning the extend stroke by up to 75 mm on-site to eject parts of varying widths from a machine bed without swapping the entire actuator.
Adjustable Transfer Stop
Setting a precise end position for diverter arms on a conveyor line, allowing quick 725-800 mm reach adjustments for different package sizes.
Custom Height Positioner
Dialing in the exact extend stop for a lifting platform in a packaging cell, providing field flexibility for varying pallet heights.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X800-75S with the SAUJ40X800-75S
To replace the SUJ40X800-75S, specify the SAUJ40X800-75S for identical 40 mm bore, 800 mm stroke, 75 mm adjust window, and 1/4" port. Retain FA or LB mounts and note the -S sensor change from CS1-B/DS1-B to CMSG/DMSG/EMSG. For the 800 mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X800-75S
- ✓ 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 SUJ Adjustable Cylinder SUJ40X800-75S FAQ
Yes, the SUJ40X800-75S is discontinued. The direct replacement is the SAUJ40X800-75S, which shares the same 40 mm bore, 800 mm stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The external stop screw trims the extend stroke by up to 75 mm on-site, yielding a 725-800 mm usable range. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X800-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X800-75S replacement — usually within 7-8 hours.