This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ50X900-100S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ50X900-100S in place of this model. 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 SUJ50X900-100S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X900-100S is a double-acting profile-type standard cylinder with a Ø50mm bore and 900mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUJ50X900-100S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke900 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X900-100S
About the Airtac SUJ Adjustable Cylinder SUJ50X900-100S
The AirTAC SUJ50X900-100S is a double-acting single-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 100 mm on-site, giving a usable extend range of 800-900 mm from the 900 mm nominal maximum. The 50 mm bore delivers 982 N push and 825 N pull at 0.5 MPa, rising to 1374 N push at 0.7 MPa. It features a 1/4" port, an M16x1.5 rod thread, and 21 mm adjustable air cushions at each end. This SUJ model is discontinued and the exact drop-in replacement is the SAUJ50X900-100S.
When sizing, a safe working load is roughly 589 N (about 60% of the 982 N push at 0.5 MPa), translating to a vertical lift capacity of about 50 kg with a 2:1 margin. The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock for held loads. The SAUJ upgrade retains the SC-series FA/LB mounting but uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this -S model. At a 900 mm stroke, external guides are recommended to prevent rod bending under side loads.
Airtac SUJ Adjustable Cylinder SUJ50X900-100S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X900-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X900-100S |
| Bore size | Ø50 mm |
| Stroke | 900 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 SAUJ50X900-100S 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 SAUJ50X900-100S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ50X900-100S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×900 | 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 SUJ50X900-100S Is Used
Variable-Length Ejector
Tuning the extend stroke by up to 100 mm on-site lets an ejection pin hit different material lengths without swapping the entire cylinder.
Adjustable Transfer Stop
Trimming the 900 mm extend stroke precisely positions a transfer gate to accommodate varying package widths on a moving belt.
Calibrated Pusher Arm
Dialing in the end position externally simplifies aligning a pusher arm to feed varying pallet sizes into a wrapping station.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X900-100S with the SAUJ50X900-100S
To replace the discontinued SUJ50X900-100S, order the drop-in SAUJ50X900-100S, which matches the 50 mm bore, 900 mm stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also offers a SAUF built-in-valve variant the SU line lacked. If sizing both ways, the neighbouring 40 mm bore yields 628 N push at 0.5 MPa, while the 63 mm bore yields 1559 N push at 0.5 MPa. Choose the 100 mm adjust window if you need on-site extend tuning between 800 and 900 mm. Because the -S suffix denotes a magnet, swap the legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches on the SAUJ. For this 900 mm stroke, add external guides to manage side-load and rod-bending risks.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X900-100S
- ✓ 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 SUJ50X900-100S FAQ
Yes, the SUJ50X900-100S is discontinued. The exact drop-in replacement is the SAUJ50X900-100S, which shares the same 50 mm bore, 900 mm stroke, 100 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 switches.
The 50 mm bore provides 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and 1767 N push at 0.9 MPa, with a theoretical max of 200 kgf at 1.0 MPa. The external stop screw provides a 100 mm adjustment window, allowing the extend stroke to be shortened from the 900 mm maximum down to 800 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
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