This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X635SH, 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 SU63-100 Standard Cylinder SU63X635SH is a double-acting profile-type standard cylinder with a Ø63mm bore and 635mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X635SH, which matches its bore, stroke, force and mounting.
The AirTAC SU63X635SH is a discontinued double-acting profile-type cylinder with a 63 mm bore and 635 mm stroke. It delivers 1559 N push force at 0.5 MPa, uses a 3/8" port, and features a high-temp Viton H seal for 0-150 C environments. AirTAC replaced this unit with the SAU63X635SH, a direct upgrade matching the original body, bore, stroke, output force, and SC-series mounting.
When migrating to the SAU, your CS1-B/DS1-B switches must change to the current CMSG/DMSG/EMSG sensors. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve. Because the 635 mm stroke is long, use external guides to prevent rod bending.
| Model | Airtac SU63-100 Standard Cylinder SU63X635SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X635SH |
| Bore size | Ø63 mm |
| Stroke | 635 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 SAU63X635SH 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 SAU63X635SH 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. |
| ×635 | 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 diverting arms on hot end conveyor lines, using the Viton H seal to withstand 150 C ambient heat while pushing packages with 1559 N.
Executes 635 mm reach pressing tasks in assembly jigs, requiring external guide rails to prevent rod bending during the 2182 N stroke at 0.7 MPa.
To replace the SU63X635SH, order the SAU63X635SH direct equivalent, verifying the 3/8" port, M16x1.5 rod thread, and SC-series mounting hardware. The -S magnet means you must upgrade from legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. The -H Viton seal handles 0-150 C heat. Sizing both ways: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. This 63 mm bore provides 1559 N. Note that a plain cylinder drifts on air loss; the cushions only decelerate. For load holding, install an external rod lock or pilot-operated check valve. At 635 mm, add external guides to prevent side-load rod bending. If valve integration is needed, explore the SAUF option.
Replacement checklist
Yes, the SU63X635SH is discontinued. The direct replacement is the AirTAC SAU63X635SH. It matches the 63 mm bore, 635 mm stroke, 3/8" port, output force, and SC-series mounting. You simply order the SAU equivalent.
The SAU63X635SH delivers 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a 318 kgf max at 1.0 MPa. Because your old SU used a -S magnet with CS1-B/DS1-B switches, you must upgrade to CMSG/DMSG/EMSG sensors on the SAU.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X635SH replacement — usually within 7-8 hours.