This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X100-20S, 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 SUJ40X100-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X100-20S is a double-acting profile-type standard cylinder with a Ø40mm bore and 100mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X100-20S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke100 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X100-20S
- 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 SUJ40X100-20S
The AirTAC SUJ40X100-20S is a double-acting, double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 80-100 mm extend out of the 100 mm nominal maximum. The extruded aluminum profile barrel is notably shorter than a standard ISO 15552 unit of the same bore. This SUJ model is discontinued; the direct replacement is the SAUJ40X100-20S, retaining the 1/4" port, M12x1.25 rod thread, and 21 mm adjustable cushions.
Upgrading to the SAUJ40X100-20S preserves the basic, FA, and LB mounting geometry but moves switch sensing from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG sensors. The stop screw strictly sets the end position; it is not a load lock, so an external rod lock is required to hold loads on air loss.
Airtac SUJ Adjustable Cylinder SUJ40X100-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X100-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X100-20S |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAUJ40X100-20S 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 SAUJ40X100-20S 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 SUJ40X100-20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SUJ40X100-20S Is Used
Dialing-in Clamp Depth
Adjusting the extend stop on-site by up to 20 mm to set precise material clamping depth without swapping cylinders or machining hard stops.
Variable Length Sorting Gates
Tuning the extend stroke of a diverting gate on a conveyor to handle varying package lengths on the fly.
Adjustable Forming Stops
Setting exact end positions for packaging fold mechanisms where carton dimensions change frequently between production runs.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X100-20S with the SAUJ40X100-20S
To replace the discontinued SUJ40X100-20S, order the direct replacement SAUJ40X100-20S, which matches the 40 mm bore, 100 mm max stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. The 20 mm adjust window is ideal when the exact extend endpoint must be dialed in on-site, avoiding the need for a fixed SAU cylinder plus an external stop. Because this is an -S model, you must update your position sensing from the legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensors. For stroke lengths of 300 mm or greater, verify the side-load limits to prevent excessive rod wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X100-20S
- ✓ 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 SUJ40X100-20S FAQ
Yes, the SUJ40X100-20S is discontinued. The direct replacement is the AirTAC SAUJ40X100-20S, which matches the 40 mm bore, 100 mm max stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. You will need to upgrade the position sensors from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG switches.
The external stop screw allows you to trim the extend stroke by up to 20 mm on-site, giving a usable extend range of 80-100 mm. The stop sets the end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X100-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X100-20S replacement — usually within 7-8 hours.