This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X900, 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 SU63X900 is a double-acting profile-type standard cylinder with a Ø63mm bore and 900mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X900, which matches its bore, stroke, force and mounting.
The AirTAC SU63X900 is a discontinued double-acting profile-type cylinder with a 63mm bore and 900mm stroke. It delivers 1559N push force at 0.5MPa via a 3/8" port. The direct replacement is the SAU63X900, matching the exact body, stroke, force, port, and SC-series mounting.
This extruded aluminium profile is more compact than ISO 15552 equivalents. Note this non-magnetic SKU cannot accept a sensor; the SAU upgrade uses CMSG/DMSG/EMSG switches and adds a SAUF valve-integrated option.
| Model | Airtac SU63-100 Standard Cylinder SU63X900 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X900 |
| Bore size | Ø63 mm |
| Stroke | 900 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 SAU63X900 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 SAU63X900 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. |
| ×900 | 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.
Pushes heavy pallets sideways on a 900mm transfer line using the 1559N thrust at 0.5MPa, requiring external guides to absorb side loads.
Opens 900mm equipment access doors, utilizing the 21mm adjustable cushions at both ends to decelerate the 20mm rod smoothly.
To replace this SU63X900, order the SAU63X900 direct equivalent, confirming the 63mm bore, 900mm stroke, 3/8" port, M16x1.5 rod thread, and SC-series mounting. This non-magnet version cannot hold a position switch. If moving down, a 50mm bore gives 982N push at 0.5MPa; moving up, an 80mm bore yields 2513N. Because the 900mm stroke invites rod bending, use external guides to prevent side-load damage. The air cushion only decelerates the piston; for secure load holding on air loss, add an external rod lock or pilot-operated check valve.
Replacement checklist
Yes, the SU63X900 is discontinued. The direct replacement is the AirTAC SAU63X900. It matches the 63mm bore, 900mm stroke, 1559N force, 3/8" port, and SC-series mounting. The SAU also offers a new SAUF variant with a built-in 4M solenoid valve.
At 0.5MPa it pushes 1559N and pulls 1402N. Push is 2182N at 0.7MPa and 2805N at 0.9MPa, with a 318kgf max at 1.0MPa. This specific SKU lacks a magnet and cannot take a sensor. The SAU replacement supports CMSG/DMSG/EMSG switches, whereas the older SU used CS1-B/DS1-B.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X900 replacement — usually within 7-8 hours.