This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X125, 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 SU63X125
The AirTAC SU63-100 Standard Cylinder SU63X125 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 SAU63X125, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X125
- 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 SU63X125
The AirTAC SU63X125 is a discontinued double-acting profile-type cylinder with a 63 mm bore and 125 mm stroke. It delivers 1559 N push and 1402 N pull at 0.5 MPa, peaking at 318 kgf. AirTAC replaced this EOL unit with the SAU63X125, a direct sharing the exact bore, stroke, 3/8" port, and SC-series mounting.
Because this SKU lacks a magnet, it cannot accept position sensors. The SAU upgrade adds a sensor groove for current CMSG/DMSG/EMSG switches, plus a new SAUF valve-integrated option.
Airtac SU63-100 Standard Cylinder SU63X125 Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X125 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X125 |
| 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 SAU63X125 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 SAU63X125 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 SU63X125
| 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 SU63X125 Is Used
Package Diverting
Actuates routing gates on packaging lines, using the 1559 N push force to reliably pivot heavy cardboard cartons at high cycle speeds.
Pallet Stopping
Deploys a mechanical stop block to halt loaded pallets on gravity conveyors, absorbing kinetic energy via the 21 mm adjustable cushions.
Clamp Actuation
Secures aluminum extrusions in machining fixtures, providing stable 1402 N pull force to prevent workpiece shift during milling operations.
Replacing the Airtac SU63-100 Standard Cylinder SU63X125 with the SAU63X125
To replace this SU63X125, order the SAU63X125 direct equivalent. Verify your 3/8" port thread (PT, G, or NPT) and SC-series mounting (LB, FA, FB, CA, CB). Since this specific SKU has no -S magnet, it cannot hold a sensor; if you need position detection on the new unit, specify an SAU63X125S and migrate to CMSG/DMSG/EMSG switches. Sizing both ways: a 50 mm bore gives 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. Note that a plain cylinder drifts on air loss—the cushions only decelerate end-of-stroke—so use an external rod lock for vertical holding. The 125 mm stroke is well under the 1500 mm standard limit, so rod bending is minimal.
Replacement checklist
- ✓ Same bore / stroke → SAU63X125
- ✓ 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 SU63X125 FAQ
Yes, the AirTAC SU63X125 is discontinued. The direct replacement is the SAU63X125. It shares the identical 63 mm bore, 125 mm stroke, 318 kgf max force, 3/8" port, and SC-series mounting accessories, so it fits the same application without mechanical changes.
At 0.5 MPa it pushes 1559 N and pulls 1402 N; at 0.7 MPa it pushes 2182 N, with a theoretical max of 318 kgf at 1.0 MPa. Because this specific SU63X125 SKU lacks a magnet, it cannot accept legacy CS1-B/DS1-B sensors. The SAU replacement uses current CMSG/DMSG/EMSG switches.
Request a Quote for the SAU63X125
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X125 replacement — usually within 7-8 hours.