This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X500-40, 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 SUJ40X500-40
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X500-40 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 SAUJ40X500-40, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke500 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X500-40
- 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 SUJ40X500-40
The AirTAC SUJ40X500-40 is a double-acting, double-rod profile cylinder with a 40mm bore and 500mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 40mm on-site, yielding a usable 460-500mm stroke window to dial in exact end positions without machining spacers.
The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X500-40 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X500-40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X500-40 |
| 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 SAUJ40X500-40 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 SAUJ40X500-40 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 SUJ40X500-40
| 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 SUJ40X500-40 Is Used
Adjustable Stop Positioning
Dialing in a precise extend stop within the 460-500mm window on a machining fixture without fabricating custom mechanical spacers for each part variation.
Variable Length Diverter
Tuning a pneumatic diverter arm's reach on-site to handle different package sizes on a packaging line, using the 40mm stroke trim to adjust the push-off point.
Custom Stroke Ejector
Setting an exact ejection distance for varying pallet widths, allowing operators to shorten the extend stroke on-site to prevent over-travel.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X500-40 with the SAUJ40X500-40
To replace this discontinued SUJ40X500-40, order the SAUJ40X500-40 for an direct match on bore, 500mm stroke, 40mm adjust window, 1/4" port, and FA/LB mounting. Choose the 40mm adjust window if your setup requires trimming the extend stroke by up to 40mm on-site; note that the stop screw sets the end position and is not a load lock, so add an external rod lock for held loads. Because this SKU lacks a magnet, it cannot take a sensor; the SAUJ upgrade supports CMSG/DMSG/EMSG switches. For the 500mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X500-40
- ✓ 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 SUJ40X500-40 FAQ
Yes, the SUJ40X500-40 is discontinued. The direct replacement is the SAUJ40X500-40, which matches the 40mm bore, 500mm stroke, 40mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors, whereas this SUJ model lacks a magnet and cannot take a switch.
The external stop screw provides a 40mm adjustment window, allowing you to trim the nominal 500mm extend stroke down to 460mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X500-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X500-40 replacement — usually within 7-8 hours.