This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X125STC, 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 SU63X125STC
The AirTAC SU63-100 Standard Cylinder SU63X125STC 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 SAU63X125STC, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X125STC
- 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 SU63X125STC
The AirTAC SU63X125STC is a discontinued double-acting profile-type cylinder with a 63 mm bore and 125 mm stroke. It delivers 1559 N push force at 0.5 MPa through a 3/8" port. AirTAC replaced this legacy unit with the SAU63X125STC, a direct sharing the exact same body dimensions, output force, and SC-series TC mounting interface.
Because the original SU extrusion is shorter than an ISO 15552 cylinder of the same bore, the SAU replacement preserves that compact footprint. The upgrade shifts the -S magnet to modern CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B switches, and introduces the SAUF valve-integrated option.
Airtac SU63-100 Standard Cylinder SU63X125STC Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X125STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X125STC |
| 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 SAU63X125STC 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 SAU63X125STC 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 SU63X125STC
| 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 SU63X125STC Is Used
Clamp Actuation
Provides 1559 N of push force at 0.5 MPa to secure heavy cast metal parts during CNC machining operations.
Package Diverting
Uses the 125 mm stroke and TC mount to push cartons smoothly across sorting lanes at up to 800 mm/s.
Pallet Stopping
Halts inbound pallets on a roller conveyor, safely absorbing kinetic energy via the 21 mm adjustable cushions.
Replacing the Airtac SU63-100 Standard Cylinder SU63X125STC with the SAU63X125STC
To replace this SU63X125STC, order the SAU63X125STC and verify your 3/8" port, M16x1.5 rod thread, and TC mounting accessory. If downsizing, a 50 mm bore gives 982 N push at 0.5 MPa; if upsizing, an 80 mm bore yields 2513 N. The 125 mm stroke is standard. Your -S magnet requires a sensor family change: legacy CS1-B/DS1-B switches will not fit the SAU, so migrate to CMSG/DMSG/EMSG. Note that a plain cylinder drifts without live air—the cushion only decelerates—so add an external rod lock for suspended loads.
Replacement checklist
- ✓ Same bore / stroke → SAU63X125STC
- ✓ 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 SU63X125STC FAQ
Yes, the SU63X125STC is discontinued. The direct replacement is the SAU63X125STC, which matches the 63 mm bore, 125 mm stroke, 3/8" port, and TC mounting. You must upgrade your sensors from the old CS1-B/DS1-B to the current CMSG/DMSG/EMSG family.
It features a 3/8" air port and M16x1.5 rod thread. The thrust is 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a maximum theoretical force of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X125STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X125STC replacement — usually within 7-8 hours.