This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X340, 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 SU63X340 is a double-acting profile-type standard cylinder with a Ø63mm bore and 340mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X340, which matches its bore, stroke, force and mounting.
The AirTAC SU63X340 is a discontinued double-acting profile cylinder with a 63mm bore and 340mm stroke. Delivering 1559N push force at 0.5MPa, its direct replacement is the SAU63X340, preserving the original 3/8" port, M16x1.5 rod thread, and SC-series mounting footprint.
This extruded aluminium body is more compact than an ISO 15552 cylinder of the same bore. Note this SKU lacks a magnet and cannot accept sensors, whereas the SAU upgrade supports modern CMSG/DMSG/EMSG switches and a SAUF built-in valve option.
| Model | Airtac SU63-100 Standard Cylinder SU63X340 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X340 |
| Bore size | Ø63 mm |
| Stroke | 340 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 SAU63X340 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 SAU63X340 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. |
| ×340 | 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.
Routes heavy pallets on a packaging line using the 1559N push force at 0.5MPa, with the 340mm stroke clearing the conveyor width for smooth lateral transfers.
Pushes assembled cartons off an accumulation roller bed; the 79kg vertical-lift capacity ensures reliable handling of dense corrugated stacks.
Operates heavy material flow gates, utilising the 3/8" port and 30-800mm/s speed range to cycle quickly without slamming via adjustable cushions.
To replace this discontinued SU63X340, order the SAU63X340 direct equivalent, verifying your 3/8" port, M16x1.5 thread, and SC-series mounting accessories (LB/FA/FB/CA/CB). Because this specific SKU has no magnet (-S), it cannot accept position sensors; the SAU upgrade uses CMSG/DMSG/EMSG switches if sensing is later required. For sizing alternatives, dropping to a 50mm bore yields 982N push at 0.5MPa, while stepping up to an 80mm bore provides 2513N. Remember, a plain cylinder drifts on air loss—the cushions only decelerate—so use an external rod lock or pilot-operated check valve for held loads. At 340mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
Yes, the AirTAC SU63X340 is discontinued. The direct replacement is the SAU63X340. It offers identical bore, stroke, force, 3/8" port, and SC-series mounting compatibility, ensuring a seamless swap.
It delivers 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and a 318kgf maximum at 1.0MPa. This specific SKU lacks a magnet and cannot take sensors; the SAU replacement supports CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X340 replacement — usually within 7-8 hours.