This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X40-40, 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 SUJ63X40-40
The AirTAC Airtac SUJ Adjustable Cylinder SUJ63X40-40 is a double-acting profile-type standard cylinder with a Ø63mm bore and 40mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ63X40-40, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke40 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X40-40
- 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 SUJ63X40-40
The AirTAC SUJ63X40-40 is a discontinued 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. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
As this SUJ series is end-of-life, the direct replacement is the SAUJ63X40-40, retaining the same bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches.
Airtac SUJ Adjustable Cylinder SUJ63X40-40 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X40-40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X40-40 |
| Bore size | Ø63 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M16×1.5 |
| 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 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ63X40-40 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAUJ63X40-40 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 SUJ63X40-40
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×40 | 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 SUJ63X40-40 Is Used
Variable Stroke Clamping
Ideal for clamping stations where the material thickness varies, letting operators trim the 40 mm extend stroke on-site without swapping the cylinder.
Adjustable Diverting Arms
Perfect for conveyor diverters requiring precise stop positioning, allowing the pin to be dialed in exactly to the package edge via the external screw.
Tunable Pusher Stops
Used in warehouse pusher assemblies to set exact ejection distances on the fly, accommodating different box sizes without reprogramming the machine.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X40-40 with the SAUJ63X40-40
To replace the discontinued SUJ63X40-40, specify the direct replacement SAUJ63X40-40, which matches the 63 mm bore, 40 mm nominal stroke, 40 mm adjust window, and 3/8" port. The 40 mm adjust window allows full stroke reduction down to 0 mm on-site, which is often simpler than fitting a fixed SAU cylinder plus an external stop. This non-magnetic SKU cannot take a switch; if sensing is needed, use the SAUJ with CMSG/DMSG/EMSG sensors. For strokes at or above 300 mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X40-40
- ✓ 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 SUJ63X40-40 FAQ
Yes, the SUJ63X40-40 is discontinued. The direct replacement is the SAUJ63X40-40, which shares the same 63 mm bore, 40 mm stroke, 3/8" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw window is 40 mm, meaning you can shorten the extend stroke by up to 40 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X40-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X40-40 replacement — usually within 7-8 hours.