This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X500-75S, 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 SUJ40X500-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X500-75S is a double-acting profile-type standard cylinder with a Ø40mm bore and 500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X500-75S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke500 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X500-75S
- 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 SUJ40X500-75S
The AirTAC SUJ40X500-75S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 425-500 mm stroke from the 500 mm nominal maximum. The extruded aluminum profile barrel is more compact than an ISO 15552 cylinder of the same 40 mm bore. This series is DISCONTINUED; the direct replacement is the SAUJ40X500-75S, which matches the bore, stroke, force, 1/4" port, and FA/LB mounting.
The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches; the SAUJ replacement upgrades to current CMSG/DMSG/EMSG sensors. The stop screw sets the end position but is not a load lock—external air is required to hold position.
Airtac SUJ Adjustable Cylinder SUJ40X500-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X500-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X500-75S |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAUJ40X500-75S 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 SAUJ40X500-75S 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 SUJ40X500-75S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SUJ40X500-75S Is Used
Variable Length Ejection
Tuning the extend stroke by up to 75 mm on-site to eject parts of varying sizes from a machine without swapping the entire cylinder.
Adjustable Transfer Stop
Acting as a movable end-stop on a conveyor line where the 425-500 mm reach must be fine-tuned for different package widths.
Custom Carton Positioning
Trimming the extend stroke on packaging equipment to push cartons accurately into sealing stations based on box dimensions.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X500-75S with the SAUJ40X500-75S
To replace the discontinued SUJ40X500-75S, use the direct replacement SAUJ40X500-75S, retaining the 40 mm bore, 500 mm max stroke, 75 mm adjust window, 1/4" port, M12x1.25 rod thread, and FA/LB mounting. Choose the 75 mm adjust window when you need on-site extend trimming between 425 and 500 mm without machining. The -S magnet version transitions from legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors on the SAUJ. For this 500 mm long stroke, use external guides to prevent rod bending and manage side loads. Remember the adjust stop sets end position only; use an external rod lock or pilot-operated check valve for load holding on air loss.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X500-75S
- ✓ 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 SUJ40X500-75S FAQ
Yes, the SUJ40X500-75S is discontinued. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The external stop screw allows you to trim the extend stroke by up to 75 mm on-site, giving a usable range of 425-500 mm from the 500 mm nominal maximum. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X500-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X500-75S replacement — usually within 7-8 hours.