This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X125SFA, 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 SU63X125SFA
The AirTAC Airtac SU63-100 Standard Cylinder SU63X125SFA is a double-acting profile-type standard cylinder with a Ø63mm bore and 125mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X125SFA, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X125SFA
- 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 SU63X125SFA
The AirTAC SU63X125SFA is a discontinued double-acting profile cylinder with a 63mm bore and 125mm stroke. It delivers 1559N push force at 0.5MPa via a 3/8" port. AirTAC replaced this unit with the SAU63X125SFA direct replacement, retaining the exact body profile, force, stroke, and SC-series FA mounting interface.
This compact extruded-aluminum body is shorter than an ISO 15552 cylinder of the same bore. The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace the legacy CS1-B/DS1-B switches used on this -S magnet model, and adds the SAUF built-in-valve option.
Airtac SU63-100 Standard Cylinder SU63X125SFA Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X125SFA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X125SFA |
| Bore size | Ø63 mm |
| Stroke | 125 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 SAU63X125SFA 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 SAU63X125SFA 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 SU63X125SFA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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 SU63X125SFA Is Used
Clamp Actuation
Secures heavy machining fixtures with 1559N push force at 0.5MPa, holding parts firmly during milling or drilling operations.
Package Diversion
Drives 125mm stroke diverting arms on packaging lines to route heavy cartons, operating reliably at speeds between 30-800mm/s.
Pallet Stops
Deploys robust 20mm rod stops to halt loaded pallets on roller conveyors, absorbing kinetic energy via the adjustable cushions.
Replacing the Airtac SU63-100 Standard Cylinder SU63X125SFA with the SAU63X125SFA
To replace this SU63X125SFA, order the SAU63X125SFA, confirming the 63mm bore, 125mm stroke, M16x1.5 rod thread, and 3/8" port. The FA mounting accessory is reused directly. Because this SKU includes the -S magnet, note that your legacy CS1-B/DS1-B switches must change to the SAU's CMSG/DMSG/EMSG sensor family. For sizing alternatives, a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore provides 2513N. A plain cylinder drifts without live air; the 21mm cushions only decelerate, so use an external rod lock or pilot-operated check valve for load holding. The SAUF variant adds a built-in 4M solenoid valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU63X125SFA
- ✓ 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 SU63X125SFA FAQ
Yes, the SU63X125SFA is discontinued. The direct replacement is the SAU63X125SFA. It matches the 63mm bore, 125mm stroke, 1559N force, 3/8" port, and SC-series FA mounting. You must upgrade your sensors from legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG family.
The 3/8" port bore 63mm cylinder delivers 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa. The 21mm adjustable cushions decelerate the load but do not hold it without live air.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X125SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X125SFA replacement — usually within 7-8 hours.