This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X125H, 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 SU63X125H
The AirTAC SU63-100 Standard Cylinder SU63X125H 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 SAU63X125H, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X125H
- 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 SU63X125H
The AirTAC SU63X125H is a discontinued double-acting profile-type cylinder featuring a 63 mm bore, 125 mm stroke, and a Viton H high-temperature seal rated for 0 to 150 C. It delivers 1559 N push force at 0.5 MPa via a 3/8 inch port. AirTAC replaced this legacy unit with the SAU63X125H, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series mounting.
The SAU replacement modernizes sensing by using CMSG/DMSG/EMSG switches instead of the old CS1-B/DS1-B family, and introduces the SAUF valve-integrated option the SU line lacked. Note this specific SKU lacks a magnet and cannot support sensors.
Airtac SU63-100 Standard Cylinder SU63X125H Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X125H |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X125H |
| 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 SAU63X125H 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 SAU63X125H 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 SU63X125H
| 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 SU63X125H Is Used
Hot Stamp Press Ejection
Handles part ejection in heated zones up to 150 C, utilizing the Viton H seal to maintain integrity while applying 1559 N of push force at 0.5 MPa.
Mold Clamping Operations
Secures lightweight molds in elevated temperature cells, taking advantage of the 21 mm adjustable air cushions to decelerate the 125 mm stroke smoothly.
Replacing the Airtac SU63-100 Standard Cylinder SU63X125H with the SAU63X125H
To replace this SU63X125H, order the SAU63X125H direct: confirm the 63 mm bore, 125 mm stroke, 3/8 inch port, M16x1.5 rod thread, and SC-series mounting. Because this is a high-temp -H variant, ensure the SAU also specifies Viton seals for 0-150 C environments. This non-magnetic SKU cannot take a sensor; if detection is needed, a new SAU -S model with CMSG/DMSG/EMSG switches is required. Sizing alternatives: a 50 mm bore offers 982 N push at 0.5 MPa, while an 80 mm bore provides 2513 N. A plain cylinder drifts without live air, so add an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU63X125H
- ✓ 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 SU63X125H FAQ
Yes, the SU63X125H is discontinued. The direct replacement is the SAU63X125H. It matches the 63 mm bore, 125 mm stroke, 3/8 inch port, and SC-series mounting, while adding compatibility with modern CMSG/DMSG/EMSG sensors.
It delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical max of 318 kgf at 1.0 MPa. The -H Viton seal allows operation from 0 to 150 C. The 3/8 inch port and 30-800 mm/s speed remain standard.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X125H
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X125H replacement — usually within 7-8 hours.