This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X200-75STC, 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 SUJ Adjustable Cylinder SUJ63X200-75STC is a double-acting profile-type standard cylinder with a Ø63mm bore and 200mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ63X200-75STC, which matches its bore, stroke, force and mounting.
The AirTAC SUJ63X200-75STC is a discontinued double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 125-200 mm extend range from the 200 mm nominal maximum. It features a 63 mm bore, a 20 mm rod, M16x1.5 rod-end thread, and a 3/8" port. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
The direct replacement is the SAUJ63X200-75STC, retaining the SC-series TC mount interface, force, and port. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this SUJ used legacy CS1-B/DS1-B switches.
| Model | Airtac SUJ Adjustable Cylinder SUJ63X200-75STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X200-75STC |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAUJ63X200-75STC 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 SAUJ63X200-75STC 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. |
| ×200 | 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.
Tuning the extend stroke on-site by up to 75 mm to alter the pitch of parts fed into a machining center without swapping cylinders.
Altering the pusher end position to accommodate different box sizes on a packaging line, using the stop screw to set the exact 125-200 mm extend distance.
Adjusting the extend stop point on the fly to handle mixed pallet depths in a distribution hub without requiring pneumatic stroke changes.
To replace the discontinued SUJ63X200-75STC, order the direct replacement SAUJ63X200-75STC, which matches the 63 mm bore, 200 mm stroke, 75 mm adjust window, 3/8" port, and TC mounting interface. Choose the 75 mm adjust window if your end-position tuning requires a wide 125-200 mm extend range. The -S magnet on this unit used CS1-B/DS1-B switches; the SAUJ requires CMSG/DMSG/EMSG sensors. Since the 200 mm stroke is under 300 mm, side-load leverage is minimal, but ensure rigid guidance. Note that air cushions only decelerate near stroke end and do not hold loads without live air.
Replacement checklist
Yes, the SUJ63X200-75STC is discontinued. The direct replacement is the SAUJ63X200-75STC, which matches the 63 mm bore, 200 mm nominal stroke, 75 mm adjust window, 3/8" port, and TC mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 75 mm external stop screw window allows you to trim the extend stroke from 200 mm down to 125 mm on-site. The stop screw sets end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X200-75STC replacement — usually within 7-8 hours.