This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X425, 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 SU63-100 Standard Cylinder SU63X425
The AirTAC Airtac SU63-100 Standard Cylinder SU63X425 is a double-acting profile-type standard cylinder with a Ø63mm bore and 425mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X425, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke425 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X425
- 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 SU63-100 Standard Cylinder SU63X425
The AirTAC SU63X425 is a discontinued double-acting profile-type cylinder with a 63 mm bore and 425 mm stroke. It delivers 1559 N push force at 0.5 MPa via a 3/8" port. The direct replacement is the SAU63X425, matching the bore, stroke, force, port and SC-series mounting.
This compact extruded-aluminium body is shorter than an ISO 15552 cylinder of the same bore. This no-magnet SKU cannot accept a sensor, unlike the legacy CS1-B/DS1-B switches used on -S models; the SAU replacement uses CMSG/DMSG/EMSG sensors and adds a SAUF built-in-valve option.
Airtac SU63-100 Standard Cylinder SU63X425 Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X425 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X425 |
| Bore size | Ø63 mm |
| Stroke | 425 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 SAU63X425 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 SAU63X425 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SU63-100 Standard Cylinder SU63X425
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×425 | 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 SU63-100 Standard Cylinder SU63X425 Is Used
Carton Diverting
Pushes heavy packages on a packaging line using the 1559 N push force at 0.5 MPa, easily handling the 79 kg safe vertical lift equivalent.
Pallet Stops
Acts as a robust end-stop for inbound pallets, relying on the 21 mm adjustable air cushions to decelerate moving loads smoothly.
Fixture Clamping
Secures large workpieces during machining, taking advantage of the 2805 N push force available at 0.9 MPa for rigid holding.
Replacing the Airtac SU63-100 Standard Cylinder SU63X425 with the SAU63X425
To replace this discontinued SU63X425, order the SAU63X425 direct equivalent, verifying the 3/8" port, M16x1.5 rod thread and PT/G/NPT thread choice. Because this is a no-magnet SKU, it cannot accept a sensor; if sensing is needed, specify an -S model and note the SAU uses CMSG/DMSG/EMSG switches. For load holding, a plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve. With a 425 mm stroke, prevent rod bending by using an external guide to absorb side loads. If sizing alternatives, a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore provides 2513 N.
Replacement checklist
- ✓ Same bore / stroke → SAU63X425
- ✓ 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 SU63-100 Standard Cylinder SU63X425 FAQ
Yes, the SU63X425 is discontinued. The direct replacement is the SAU63X425, offering the same 63 mm bore, 425 mm stroke, 3/8" port, output force and SC-series mounting compatibility.
It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical max of 318 kgf at 1.0 MPa. This specific SKU lacks a magnet, so it cannot accept a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU63X425
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X425 replacement — usually within 7-8 hours.