This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X200-20, 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 SUJ50X200-20
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X200-20 is a double-acting profile-type standard cylinder with a Ø50mm bore and 200mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X200-20, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke200 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X200-20
- 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 SUJ50X200-20
The AirTAC SUJ50X200-20 is a double-acting double-rod profile cylinder with a 50mm bore and 200mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 20mm on-site, yielding a usable 180-200mm stroke window. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
This SUJ model is discontinued and the direct replacement is the SAUJ50X200-20, which matches the bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches used here. Note this specific SKU lacks a magnet and cannot accept a magnetic switch.
Airtac SUJ Adjustable Cylinder SUJ50X200-20 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X200-20 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X200-20 |
| Bore size | Ø50 mm |
| Stroke | 200 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 SAUJ50X200-20 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 SAUJ50X200-20 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 SUJ50X200-20
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | 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.
Where the Airtac SUJ Adjustable Cylinder SUJ50X200-20 Is Used
Diverter Gate Positioning
Allows operators to fine-tune the extend end position of a sorting diverter by up to 20mm on-site to accommodate varying package sizes without re-engineering the mount.
Adjustable Product Stop
Sets a variable end-stop for items on a conveyor belt, letting the line adjust the stopping distance in the 180-200mm window for different product lengths.
Pallet Feed Alignment
Provides field-adjustable stroke tuning for a pallet feeding mechanism, ensuring precise alignment against external fixtures without needing custom spacers.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X200-20 with the SAUJ50X200-20
To replace the discontinued SUJ50X200-20, select the direct replacement SAUJ50X200-20, which preserves the 50mm bore, 200mm nominal stroke, 20mm adjust window, 1/4" port, and FA/LB mounting. Choose the 20mm adjust window if your mechanism needs field tuning of the extend end position; the nominal 200mm stroke remains the maximum. Because this SKU has no magnet, it cannot take sensors, but if upgrading to an -S SAUJ, plan to migrate from CS1-B/DS1-B to CMSG/DMSG/EMSG sensors. For this 200mm stroke, verify side-load alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X200-20
- ✓ 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 SUJ50X200-20 FAQ
Yes, the SUJ50X200-20 is discontinued. The direct replacement is the SAUJ50X200-20, which shares the same profile body, 50mm bore, 200mm stroke, 20mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also supports the current CMSG/DMSG/EMSG sensors and the SAUF built-in-valve variant.
The 20mm adjust window lets you trim the extend stroke from 200mm down to 180mm on-site. The stop screw sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X200-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X200-20 replacement — usually within 7-8 hours.