This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X40-20SH, 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 SUJ63X40-20SH
The AirTAC Airtac SUJ Adjustable Cylinder SUJ63X40-20SH 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 SAUJ63X40-20SH, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke40 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X40-20SH
- 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 SUJ63X40-20SH
The AirTAC SUJ63X40-20SH is a double-acting, double-rod profile cylinder with an adjustable stroke, now officially discontinued. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 20-40 mm stroke from the 40 mm nominal maximum. The direct replacement is the SAUJ63X40-20SH, which matches the bore, stroke, force, and mounting. The Viton H seal option extends the operating temperature to 0-150 C.
The stop screw sets the end position but is not a load lock; load holding requires live air or an external rod lock. Beyond the lifecycle upgrade, the SAUJ replaces the legacy CS1-B/DS1-B sensors with current CMSG/DMSG/EMSG switches and introduces the SAUF built-in-valve variant the SU line lacked.
Airtac SUJ Adjustable Cylinder SUJ63X40-20SH Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X40-20SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X40-20SH |
| 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 SAUJ63X40-20SH 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 SAUJ63X40-20SH 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 SUJ63X40-20SH
| 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 SUJ63X40-20SH Is Used
Variable Pitch Indexing
A packaging machine needing to push parts 25 mm on one cycle and 35 mm on the next uses the 20 mm adjust window to tune the extend stroke on-site without swapping cylinders.
Dynamic Reject Gate
A diverter arm on a conveyor requires precise extend endpoints to deflect varying product widths; the external stop screw sets the exact 30-40 mm stroke needed per run.
Adjustable Carton Stop
An assembly line uses the cylinder as a physical stop for incoming carts, trimming the extend stroke by up to 20 mm to accommodate different carton depths without reprogramming logic.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X40-20SH with the SAUJ63X40-20SH
To replace the discontinued SUJ63X40-20SH, order the exact direct replacement SAUJ63X40-20SH, which preserves the 63 mm bore, 40 mm stroke, 20 mm adjust window, 3/8" port, and SC-series FA/LB mounting compatibility. The 20 mm adjust window is ideal for fine-tuning the extend endpoint without machining external stops. Because this configuration includes the -S magnet and -H Viton seal, update your bill of materials to use CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches. For this 40 mm stroke, side-load risks are minimal, but always maintain load alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X40-20SH
- ✓ 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 SUJ63X40-20SH FAQ
Yes, the SUJ63X40-20SH is discontinued. The direct replacement is the SAUJ63X40-20SH. It matches the 63 mm bore, 40 mm nominal stroke, 20 mm adjust window, 3/8" port, and FA/LB mounting. You will need to upgrade your position sensing from the legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 20 mm adjust window, allowing the extend stroke to be shortened from the 40 mm maximum down to 20 mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X40-20SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X40-20SH replacement — usually within 7-8 hours.