This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X225-20, 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 SUJ63X225-20
The AirTAC Airtac SUJ Adjustable Cylinder SUJ63X225-20 is a double-acting profile-type standard cylinder with a Ø63mm bore and 225mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ63X225-20, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke225 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X225-20
- 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 SUJ63X225-20
The AirTAC SUJ63X225-20 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 205-225 mm stroke. The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so fit an external rod lock for held loads.
The direct replacement is the SAUJ63X225-20, matching the 63 mm bore, 225 mm stroke, force, port, and FA/LB mounting. This non-magnetic SKU cannot take a switch, whereas the SAUJ accepts current CMSG/DMSG/EMSG sensors (the SUJ used legacy CS1-B/DS1-B).
Airtac SUJ Adjustable Cylinder SUJ63X225-20 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X225-20 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X225-20 |
| Bore size | Ø63 mm |
| Stroke | 225 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 SAUJ63X225-20 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 SAUJ63X225-20 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 SUJ63X225-20
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×225 | 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 SUJ63X225-20 Is Used
Diverter Gate Positioning
Allows operators to fine-tune the 20 mm extend stop on-site to hit a moving conveyor diverter gate accurately without re-machining hard stops.
Variable Carton Sealing
Provides a 205-225 mm extend window to accommodate slight flap height variances on packaging lines, adjusting the end position per batch.
Bin Dosing Valve
Regulates bulk material flow by trimming the extend stroke up to 20 mm, setting the discharge door opening precisely for different densities.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X225-20 with the SAUJ63X225-20
To replace this discontinued SUJ63X225-20, order the SAUJ63X225-20 direct, which preserves the 3/8" port, 21 mm cushions, and FA/LB mounts. The 20 mm adjust window is ideal when final extend positioning needs field tuning rather than machining a custom stop. Because this non-magnetic SKU lacks a switch, migrating to the SAUJ lets you use CMSG/DMSG/EMSG sensors. For this 225 mm stroke, verify side-load alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X225-20
- ✓ 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 SUJ63X225-20 FAQ
Yes, the SUJ63X225-20 is discontinued.
The external stop screw trims the extend stroke by up to 20 mm, giving a 205-225 mm usable window. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X225-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X225-20 replacement — usually within 7-8 hours.