This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X300-40, 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 SUJ100X300-40
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X300-40 is a double-acting profile-type standard cylinder with a Ø100mm bore and 300mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X300-40, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X300-40
- 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 SUJ100X300-40
The AirTAC SUJ100X300-40 is a double-acting double-rod profile cylinder with a 300 mm nominal stroke and a 40 mm external stop screw window, allowing you to trim the extend stroke on-site down to 260 mm. The 1/2" port and extruded aluminum profile barrel make it more compact than an equivalent fixed-stroke unit. This SUJ model is discontinued; the direct replacement is the SAUJ100X300-40, matching the bore, stroke, force, port, and FA/LB mounting.
The stop screw sets the extend end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock for held loads. Because this SKU lacks a magnet (-S), it cannot take a magnetic switch. The SAUJ upgrade transitions from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors.
Airtac SUJ Adjustable Cylinder SUJ100X300-40 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X300-40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X300-40 |
| Bore size | Ø100 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ100X300-40 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUJ100X300-40 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 SUJ100X300-40
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SUJ100X300-40 Is Used
Press Fit Tuning
Adjusting the extend stroke on-site by up to 40 mm allows operators to dial in the exact insertion depth for press-fit pins without swapping the entire cylinder.
Variable Length Diverter
Trimming the extend stroke from 300 mm down to 260 mm accommodates changing package sizes on a conveyor line, ensuring the diverter meets the exact product edge.
Adjustable End Stop
Setting a precise mechanical end position between 260 mm and 300 mm provides a repeatable hard stop for pallet positioning before final clamping.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X300-40 with the SAUJ100X300-40
To replace the discontinued SUJ100X300-40, order the direct replacement SAUJ100X300-40, which preserves the 100 mm bore, 300 mm nominal stroke, 1/2" port, and FA/LB mounting. Select the -40 mm adjust window if your process requires tuning the extend stroke between 260 mm and 300 mm on-site. For the SAUJ, specify -S for CMSG/DMSG/EMSG sensor compatibility (the SUJ used CS1-B/DS1-B). At a 300 mm stroke, prevent rod bending by supporting side loads with external guides. The stop screw sets end position and is not a lock; add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X300-40
- ✓ 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 SUJ100X300-40 FAQ
Yes, the SUJ100X300-40 is discontinued. The direct replacement is the SAUJ100X300-40, which matches the 100 mm bore, 300 mm stroke, 1/2" 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 40 mm adjust window, allowing you to shorten the 300 mm extend stroke down to 260 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X300-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X300-40 replacement — usually within 7-8 hours.