This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X170, 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 SU63X170 is a double-acting profile-type standard cylinder with a Ø63mm bore and 170mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X170, which matches its bore, stroke, force and mounting.
The AirTAC SU63X170 is a discontinued double-acting profile-type cylinder with a 63mm bore and 170mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 cylinder of the same bore, delivering 1559 N push force at 0.5 MPa through a 3/8" port. AirTAC replaced this end-of-life unit with the SAU63X170, a direct replacement retaining the exact body dimensions, stroke, force, and SC-series mounting.
Because this SKU lacks a magnet, it cannot accept a sensor. Upgrading to the SAU allows the use of modern CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B), and the SAU line introduces a SAUF variant with a built-in 4M solenoid valve. Note that a plain cylinder drifts on air loss; use an external rod lock for held loads.
| Model | Airtac SU63-100 Standard Cylinder SU63X170 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X170 |
| Bore size | Ø63 mm |
| Stroke | 170 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 SAU63X170 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 SAU63X170 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. |
| ×170 | 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 packaging lines, utilizing the 1559 N push force to redirect heavy cartons reliably at 0.5 MPa.
Serves as a robust end-stop for roller conveyors, absorbing pallet inertia using the adjustable 21mm air cushions at both ends.
Drives medium-duty clamping fixtures in machining cells, where the compact profile body saves valuable machine envelope space.
To replace the discontinued SU63X170, order the SAU63X170 direct equivalent, verifying the 3/8" port, M16x1.5 rod thread, and SC-series mounting hardware. If sensing is required, note that this no-magnet SKU cannot take a switch, whereas the SAU supports CMSG/DMSG/EMSG sensors. For load holding, remember the air cushion only decelerates; a pilot-operated check valve or rod lock is needed to prevent drift. If downsizing, a 50mm bore offers 982 N push at 0.5 MPa; if upsizing, an 80mm bore provides 2513 N. At 170mm stroke, side-load risks are low, but ensure rigid alignment to avoid rod bending.
Replacement checklist
Yes, the SU63X170 is discontinued. The direct replacement is the AirTAC SAU63X170. It shares the same 63mm bore, 170mm stroke, 1559 N output force, 3/8" port, and SC-series mounting accessories, fitting the exact same application footprint.
At 0.5 MPa it pushes 1559 N and pulls 1402 N; at 0.7 MPa it pushes 2182 N, with a theoretical max of 318 kgf at 1.0 MPa. Because this specific SKU lacks a magnet, it cannot accept sensors. 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 SAU63X170 replacement — usually within 7-8 hours.