This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X35-20, 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 SUJ50X35-20
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X35-20 is a double-acting profile-type standard cylinder with a Ø50mm bore and 35mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X35-20, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke35 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X35-20
- 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 SUJ50X35-20
The AirTAC SUJ50X35-20 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 15-35 mm extend window from the 35 mm nominal maximum.
The direct replacement is the SAUJ50X35-20, matching the bore, stroke, force, port, and SC-series FA/LB mounting. The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches used here. Note this SKU lacks a magnet and cannot take a switch; the stop screw sets end position but is not a load lock.
Airtac SUJ Adjustable Cylinder SUJ50X35-20 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X35-20 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X35-20 |
| Bore size | Ø50 mm |
| Stroke | 35 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ50X35-20 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAUJ50X35-20 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 SUJ50X35-20
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×35 | 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 SUJ50X35-20 Is Used
Diverter Gate Positioning
Tuning the extend stroke on-site allows a diverter gate to hit an exact product lane without swapping physical hardstops.
Package Pusher Alignment
Adjusting the extend end position accommodates varying box widths on a packaging line while maintaining a compact profile body.
Short-Stroke Ejector
Trimming the extend stroke provides precise ejection force for parts of varying sizes without re-mounting the cylinder.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X35-20 with the SAUJ50X35-20
To replace the discontinued SUJ50X35-20, specify the SAUJ50X35-20 direct, which preserves the 20 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 20 mm adjust window if your end-of-stroke position needs field tuning between 15 and 35 mm. Because this non-magnetic SKU cannot accept a sensor, the SAUJ upgrade with CMSG/DMSG/EMSG sensors is required if position detection is needed. The stop screw sets the end position but is not a lock; for load holding on air loss, use an external rod lock or pilot-operated check valve. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X35-20
- ✓ 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 SUJ50X35-20 FAQ
Yes, the SUJ50X35-20 is discontinued. The direct replacement is the SAUJ50X35-20, which matches the 50 mm bore, 35 mm stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw provides a 20 mm adjust window, allowing the 35 mm nominal extend stroke to be shortened to a minimum of 15 mm on-site.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X35-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X35-20 replacement — usually within 7-8 hours.