This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X125S, 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 SU63X125S
The AirTAC SU63-100 Standard Cylinder SU63X125S 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 SAU63X125S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X125S
- 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 SU63X125S
The AirTAC SU63X125S is a discontinued double-acting profile-type cylinder with a 63mm bore and 125mm stroke. It delivers 1559N push force at 0.5MPa via a 3/8" port. The direct replacement is the SAU63X125S, matching the bore, stroke, force, port, and SC-series mounting.
The SAU upgrade switches the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches, and introduces the SAUF built-in-valve option. The extruded aluminum body is more compact than an ISO 15552 equivalent.
Airtac SU63-100 Standard Cylinder SU63X125S Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X125S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X125S |
| 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 SAU63X125S 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 SAU63X125S 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 SU63X125S
| 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 SU63X125S Is Used
Package Diversion
Pushes heavy cartons at 90 degrees on a sorting line using the 1559N push force at 0.5 MPa.
Pallet Stopper
Acts as a robust end-stop for inbound pallets, absorbing kinetic energy via the 21mm adjustable cushions.
Clamp Actuator
Secures metal workpieces during machining, providing a safe 935N working load without exceeding limits.
Replacing the Airtac SU63-100 Standard Cylinder SU63X125S with the SAU63X125S
To replace this SU63X125S, order the SAU63X125S, verifying the 125mm stroke, 3/8" port, M16x1.5 rod thread, and SC-series mounting. Because this SKU has the -S magnet, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If sizing neighbors, a 50mm bore gives 982N push at 0.5MPa, while an 80mm bore yields 2513N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock for held loads. The SAUF variant offers a built-in valve the SU lacked.
Replacement checklist
- ✓ Same bore / stroke → SAU63X125S
- ✓ 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 SU63X125S FAQ
Yes, the SU63X125S is discontinued. The direct replacement is the SAU63X125S. It shares the same 63mm bore, 125mm stroke, 3/8" port, output force, and SC-series mounting accessories. You simply order the SAU equivalent.
At 0.5 MPa it provides 1559N push and 1402N pull; 2182N push at 0.7 MPa; 2805N at 0.9 MPa; and a max of 318 kgf at 1.0 MPa. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches; the SAU replacement uses CMSG/DMSG/EMSG sensors instead.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X125S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X125S replacement — usually within 7-8 hours.