This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X500-40S, 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 SUJ40X500-40S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X500-40S 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 SAUJ40X500-40S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke500 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X500-40S
- 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 SUJ40X500-40S
The AirTAC SUJ40X500-40S is a double-acting, double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 460-500 mm extension out of the 500 mm nominal maximum. It features a 1/4" port, a 16 mm rod, and adjustable 21 mm cushions.
This discontinued unit is fully replaced by the direct replacement SAUJ40X500-40S, which retains the exact bore, stroke, force, and SC-series FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches from the legacy CS1-B/DS1-B used here. The stop screw sets end position only; it is not a load lock, so add an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X500-40S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X500-40S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X500-40S |
| 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 SAUJ40X500-40S 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 SAUJ40X500-40S 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 SUJ40X500-40S
| 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 SUJ40X500-40S Is Used
Variable Pitch Pushing
Feeding different length billets on a single line by dialing the extend stroke within the 460-500 mm window without swapping cylinders.
Adjustable Transfer Stops
Tuning a diverter gate's reach on-site to handle varying package sizes, using the 40 mm external stop screw to set the exact end position.
Calibrated Sealing Heads
Fine-tuning the down-stroke end position for varying carton heights, relying on the adjustable stop to prevent crushing while maintaining force.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X500-40S with the SAUJ40X500-40S
To replace this discontinued model, specify the SAUJ40X500-40S, which matches the 40 mm bore, 500 mm nominal stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. Choose the adjust window based on your maximum needed trim: this 40 mm window allows on-site extend shortening from 460 to 500 mm. Because the 500 mm stroke is long, ensure external guides to prevent rod bending and side-load wear. The -S suffix indicates a piston magnet; you must switch from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches for the SAUJ. Remember that the stop screw sets end position but is not a load lock—use an external rod lock for holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X500-40S
- ✓ 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 SUJ40X500-40S FAQ
Yes, the SUJ40X500-40S is discontinued. The direct replacement is the SAUJ40X500-40S, matching the 40 mm bore, 500 mm stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. You only need to upgrade the sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw allows you to trim the extend stroke by up to 40 mm on-site, giving a usable extension range of 460-500 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X500-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X500-40S replacement — usually within 7-8 hours.