This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X100-50SFA, 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 SUJ50X100-50SFA
The AirTAC SUJ Adjustable Cylinder SUJ50X100-50SFA is a double-acting profile-type standard cylinder with a Ø50mm bore and 100mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X100-50SFA, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke100 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X100-50SFA
- 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 SUJ50X100-50SFA
The AirTAC SUJ50X100-50SFA is a double-acting, double-rod profile cylinder with an adjustable stroke, allowing you to trim the extend stroke by up to 50 mm on-site (usable range 50-100 mm from the 100 mm nominal maximum). The external stop screw sets the end position but is not a load lock. It features a 1/4" port, an M16x1.5 rod thread, and 21 mm adjustable air cushions at each end.
This SUJ unit is discontinued; the direct replacement is the SAUJ50X100-50SFA, sharing the same bore, stroke, force, port, and FA mounting interface. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this SUJ. A plain cylinder drifts on air loss, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X100-50SFA Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X100-50SFA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X100-50SFA |
| Bore size | Ø50 mm |
| Stroke | 100 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 SAUJ50X100-50SFA 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 SAUJ50X100-50SFA 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 SUJ50X100-50SFA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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 SUJ50X100-50SFA Is Used
Variable Depth Boring
Adjusts the extend stroke by up to 50 mm on-site to machine blind holes of varying depths without retooling the entire fixture.
Variable Height Carton Sealing
Trims the extend position dynamically to seal cartons of different heights, using the stop screw to set the precise end position.
Adjustable Transfer Pusher
Tunes the pusher extend distance by up to 50 mm to divert products of varying widths off a conveyor line accurately.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X100-50SFA with the SAUJ50X100-50SFA
To replace the discontinued SUJ50X100-50SFA, specify the SAUJ50X100-50SFA; it is a direct match for bore, stroke, 50 mm adjust window, 1/4" port, and FA mount. The 50 mm adjust window is ideal when exact extend positioning varies by up to 50 mm. The -S magnet requires a sensor change from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X100-50SFA
- ✓ 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 SUJ50X100-50SFA FAQ
Yes, the SUJ50X100-50SFA is discontinued. The direct replacement is the SAUJ50X100-50SFA, which matches the 50 mm bore, 100 mm stroke, 50 mm adjust window, 1/4" port, and FA mounting. You will need to upgrade the position sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw allows you to shorten the extend stroke by up to 50 mm on-site, giving a usable range of 50-100 mm. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X100-50SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X100-50SFA replacement — usually within 7-8 hours.