This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ63X40-20SH — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ63X40-20SH in place of this model. 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 drop-in 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
About the Airtac SUJ Adjustable Cylinder SUJ63X40-20SH
The AirTAC SUJ63X40-20SH is a double-acting, single-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. This 63 mm bore delivers 1559 N push and 1402 N pull at 0.5 MPa, operating at 30-800 mm/s via a 3/8" port. The drop-in 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.
When sizing, note the computed safe working load is approximately 935 N (60% of the 1559 N push at 0.5 MPa), translating to a 79 kg vertical lift with a 2:1 margin. 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 — a true drop-in on output. 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 drop-in 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. If resizing, the neighboring 50 mm bore provides 982 N push at 0.5 MPa, while the 80 mm bore offers 2513 N. 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 exact drop-in 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 63 mm bore provides 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and 2805 N push at 0.9 MPa. 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.