This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X400-75S, 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.
Airtac SUJ Adjustable Cylinder SUJ63X400-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ63X400-75S is a double-acting profile-type standard cylinder with a Ø63mm bore and 400mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ63X400-75S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke400 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X400-75S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SUJ Adjustable Cylinder SUJ63X400-75S
The AirTAC SUJ63X400-75S is a double-acting double-rod profile cylinder that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 325-400 mm range from its 400 mm nominal maximum. The 63 mm bore carries a 3/8" port and M16x1.5 rod thread.
This discontinued model drops in directly to the SAUJ63X400-75S, retaining the exact bore, stroke, force, port, and FA/LB mounting. The stop screw sets the end position but is not a load lock; drift occurs on air loss, so use an external rod lock for held loads. The SAUJ upgrade moves from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
Airtac SUJ Adjustable Cylinder SUJ63X400-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X400-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X400-75S |
| Bore size | Ø63 mm |
| Stroke | 400 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 SAUJ63X400-75S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAUJ63X400-75S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ63X400-75S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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.
Where the Airtac SUJ Adjustable Cylinder SUJ63X400-75S Is Used
Variable Pitch Indexing
Allows a single actuator to feed different material lengths by tuning the 75 mm extend window on-site for each job changeover.
Adjustable Transfer Stops
Sets precise divert positions on a packaging line, trimming the extend stroke up to 75 mm to handle varying box dimensions without swapping cylinders.
Variable Height Ejection
Tunes the ejection reach on a palletizer to push loads onto different conveyor heights, using the 325-400 mm usable stroke range.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X400-75S with the SAUJ63X400-75S
To replace the discontinued SUJ63X400-75S, order the exact direct replacement SAUJ63X400-75S, which preserves the 3/8" port, M16x1.5 rod, and FA/LB mounting. Select the 75 mm adjust window if you need to trim the extend stroke on-site; the stop screw sets end position but is not a lock. For the -S magnet, swap legacy CS1-B/DS1-B switches to SAUJ-compatible CMSG/DMSG/EMSG sensors. Because the 400 mm stroke exceeds 300 mm, add external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X400-75S
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SUJ Adjustable Cylinder SUJ63X400-75S FAQ
Yes, the SUJ63X400-75S is discontinued. The direct replacement is the SAUJ63X400-75S, which matches the 63 mm bore, 400 mm stroke, 75 mm adjust window, 3/8" port, and FA/LB mounting. You only need to upgrade the switches from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors.
The double-acting double-rod cylinder pushes 1559 N at 0.5 MPa, 2182 N at 0.7 MPa, and 2805 N at 0.9 MPa, with a 1402 N pull at 0.5 MPa and 318 kgf theoretical max. The external stop screw window trims the extend stroke by up to 75 mm on-site, giving a usable 325-400 mm range. The stop sets end position only; it is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X400-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X400-75S replacement — usually within 7-8 hours.