This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X155S, 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.

The AirTAC Airtac SU63-100 Standard Cylinder SU63X155S is a double-acting profile-type standard cylinder with a Ø63mm bore and 155mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X155S, which matches its bore, stroke, force and mounting.
The AirTAC SU63X155S is a discontinued double-acting profile-type cylinder with a 63 mm bore and 155 mm stroke. It delivers 1559 N push and 1402 N pull at 0.5 MPa. AirTAC replaced this end-of-line unit with the SAU63X155S, a direct upgrade retaining the exact body dimensions, 3/8 inch port, M16x1.5 rod thread and SC-series mounting hardware.
Because this SKU includes a magnet (-S), it originally paired with legacy CS1-B or DS1-B reed switches. The SAU replacement transitions to modern CMSG, DMSG or EMSG sensors in the same groove. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve, an option the SU line never offered.
| Model | Airtac SU63-100 Standard Cylinder SU63X155S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X155S |
| Bore size | Ø63 mm |
| Stroke | 155 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 SAU63X155S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAU63X155S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×155 | 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.
Actuates routing gates on 50-80 kg parcel lines where the 155 mm stroke and 1559 N push force reliably redirect heavy cartons.
Deploys a mechanical stop block to halt loaded pallets on gravity conveyors, using adjustable cushions to soften the end-of-stroke impact.
Secures medium-weight aluminum extrusions or steel plates during machining operations, providing stable 1402 N pull force for retracting fixtures.
To replace this discontinued SU63X155S, order the SAU63X155S. Confirm your 3/8 inch port thread (PT, G or NPT) and SC-series mounting brackets (LB, FA, FB, CA, CB, TC or TCM1) carry over directly. If your machine relied on the -S magnet for positioning, note that your legacy CS1-B and DS1-B switches must change to the current CMSG, DMSG or EMSG sensor family on the SAU. For force verification, this 63 mm bore outputs 1559 N at 0.5 MPa; stepping down to a 50 mm bore drops thrust to 982 N, while stepping up to an 80 mm bore yields 2513 N. Remember that a standard cylinder drifts without live air and the cushions only decelerate at stroke end, so fit an external rod lock or pilot-operated check valve if you need to hold a load mid-stroke. For higher cycling automation, evaluate the SAUF valve-integrated variant to eliminate external piping.
Replacement checklist
Yes, the AirTAC SU63X155S is discontinued and end-of-life. The direct replacement is the SAU63X155S. It matches the 63 mm bore, 155 mm stroke, 3/8 inch port, output force 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 push is 2182 N, and the theoretical maximum is 318 kgf at 1.0 MPa. Because this is a -S magnet model, it used legacy CS1-B and DS1-B switches. The SAU replacement requires upgrading to CMSG, DMSG or EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X155S replacement — usually within 7-8 hours.