This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X425S, 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 SU63X425S
The AirTAC Airtac SU63-100 Standard Cylinder SU63X425S 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 SAU63X425S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke425 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X425S
- 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 SU63X425S
The AirTAC SU63X425S 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 and uses a 3/8" port. AirTAC replaced this legacy unit with the SAU63X425S, a direct alternative retaining the exact bore, stroke, output force, port size, and SC-series mounting compatibility.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this model's legacy CS1-B/DS1-B switches, and offers a SAUF built-in valve variant the SU line lacked. Note that a standard cylinder drifts without live air; the cushions only decelerate, so use an external rod lock for held loads.
Airtac SU63-100 Standard Cylinder SU63X425S Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X425S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X425S |
| 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 SAU63X425S 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 SAU63X425S 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 SU63X425S
| 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 SU63X425S Is Used
Carton Diverting
Pushes packages at 30-800 mm/s on packaging lines, utilizing the 1559 N push force at 0.5 MPa to redirect heavy goods smoothly.
Pallet Handling
Actuates 425 mm stroke gating and lifting mechanisms on pallet conveyors, where the direct replacement SAU63X425S maintains identical SC-series mounting.
Component Ejection
Ejects molded parts from machinery, relying on the 21 mm adjustable air cushions at both ends to decelerate the 20 mm rod safely.
Replacing the Airtac SU63-100 Standard Cylinder SU63X425S with the SAU63X425S
To replace the SU63X425S, order the SAU63X425S, confirming the 63 mm bore, 425 mm stroke, 3/8" port, M16x1.5 rod thread, and SC-series mounting. Because this -S model has a piston magnet for legacy CS1-B/DS1-B switches, you must upgrade to CMSG/DMSG/EMSG sensors on the SAU. If you need integrated flow control, the SAUF variant includes a built-in 4M solenoid valve. At 425 mm, this long stroke requires external guides to prevent rod bending under side loads. For sizing alternatives, a 50 mm bore gives 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. Remember, the air cushions only decelerate; they do not hold loads on air loss, requiring a pilot-operated check valve for vertical positioning.
Replacement checklist
- ✓ Same bore / stroke → SAU63X425S
- ✓ 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 SU63X425S FAQ
Yes, the SU63X425S is discontinued. The direct replacement is the AirTAC SAU63X425S. It matches the 63 mm bore, 425 mm stroke, 3/8" port, output force, and SC-series mounting, but requires upgrading to CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B switches.
The 63 mm bore features a 3/8" port and a 20 mm rod. It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N at 0.9 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X425S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X425S replacement — usually within 7-8 hours.