This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X125SN, 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 SU63X125SN
The AirTAC SU63-100 Standard Cylinder SU63X125SN 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 SAU63X125SN, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke125 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU63X125SN
- 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 SU63X125SN
The AirTAC SU63X125SN 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. AirTAC replaced it with the SAU63X125SN, a direct replacement retaining the exact bore, stroke, 3/8" port, M16x1.5 rod thread and SC-series mounting.
This unit features an NBR seal (-N) for standard -20 to +70 C operation, and a piston magnet (-S) for legacy CS1-B/DS1-B switches. The SAU upgrade switches to CMSG/DMSG/EMSG sensors and adds a SAUF built-in valve option.
Airtac SU63-100 Standard Cylinder SU63X125SN Technical Specifications
| Model | Airtac SU63-100 Standard Cylinder SU63X125SN |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X125SN |
| 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 SAU63X125SN 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 SAU63X125SN 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 SU63X125SN
| 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 SU63X125SN Is Used
Carton Diverting
Uses the 1559 N push force at 0.5 MPa to push heavy cardboard cartons cleanly off a sorting line over a 125 mm travel distance.
Pallet Positioning
Ideal for squaring off pallets or heavy totes at a packaging station, taking advantage of the 79 kg safe vertical lift capacity.
Clamp Actuation
Provides reliable clamping pressure for medium-weight workholding fixtures, utilizing the compact 63 mm profile body to save space.
Replacing the Airtac SU63-100 Standard Cylinder SU63X125SN with the SAU63X125SN
To replace this SU63X125SN, order the SAU63X125SN. Verify your 3/8" port, M16x1.5 rod thread, PT/G/NPT thread standard, and SC-series mounting (LB/FA/FB/CA/CB). Because this SKU has a magnet (-S), note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. For sizing both ways: dropping to a 50 mm bore reduces [email protected] to 982 N, while stepping up to an 80 mm bore increases it to 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for held loads. If you need integrated flow control, the SAUF variant adds a built-in 4M solenoid valve the SU lacked.
Replacement checklist
- ✓ Same bore / stroke → SAU63X125SN
- ✓ 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 SU63X125SN FAQ
Yes, the AirTAC SU63X125SN is discontinued. The direct replacement is the SAU63X125SN. It matches the 63 mm bore, 125 mm stroke, 1559 N force, 3/8" port, and SC-series mounting accessories perfectly.
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa push is 2182 N, with a theoretical max of 318 kgf at 1.0 MPa. The -S magnet works with legacy CS1-B/DS1-B switches, but the SAU replacement requires CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU63X125SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X125SN replacement — usually within 7-8 hours.