This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X500-100, 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 SUJ40X500-100
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X500-100 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 SAUJ40X500-100, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke500 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X500-100
- 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 SUJ40X500-100
The AirTAC SUJ40X500-100 is a double-acting, double-rod adjustable-stroke profile cylinder, now discontinued and replaced by the direct replacement SAUJ40X500-100. It uses an external stop screw to trim the extend stroke by up to 100 mm on-site, giving a usable extend range of 400-500 mm from the 500 mm nominal maximum. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
The SAUJ successor retains the exact profile body, force, and FA/LB mounting, but upgrades sensing to current CMSG/DMSG/EMSG sensors (this legacy SUJ used CS1-B/DS1-B). Because this specific SKU lacks a magnet, it cannot accept a magnetic switch. At 500 mm stroke, minimize side-load and rod-bending by supporting the load with external guides.
Airtac SUJ Adjustable Cylinder SUJ40X500-100 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X500-100 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X500-100 |
| 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 SAUJ40X500-100 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 SAUJ40X500-100 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 SUJ40X500-100
| 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 SUJ40X500-100 Is Used
Variable Length Ejector
Tuning the extend stroke by up to 100 mm on-site to eject parts of varying widths from a machine bed without re-engineering the entire fixture.
Adjustable Transfer Stop
Acting as a pneumatic stop gate on a conveyor where the required package stop position frequently shifts by up to 100 mm between production runs.
Variable Depth Tamping
Compressing product inside cases of different fill volumes by trimming the extend stroke on-site to set the exact tamping depth.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X500-100 with the SAUJ40X500-100
To replace the discontinued SUJ40X500-100, order the direct replacement SAUJ40X500-100, which matches the 40 mm bore, 500 mm nominal stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 100 mm adjust window when you need to tune the extend stroke down to 400 mm on-site, which often beats installing a fixed-stroke cylinder with a bulky external stop. Because this non-magnet SKU cannot take a switch, if sensing is required on the SAUJ upgrade you must select the -S option and use CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For the 500 mm stroke, external guides are recommended to prevent rod-bending and excessive side-load.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X500-100
- ✓ 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 SUJ40X500-100 FAQ
Yes, the SUJ40X500-100 is discontinued. The direct replacement is the SAUJ40X500-100, which matches the 40 mm bore, 500 mm stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors, whereas this legacy SUJ used CS1-B/DS1-B.
The external stop screw window is 100 mm, allowing the 500 mm extend stroke to be shortened on-site down to 400 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X500-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X500-100 replacement — usually within 7-8 hours.