This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X210-20S, 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 SUJ40X210-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X210-20S is a double-acting profile-type standard cylinder with a Ø40mm bore and 210mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X210-20S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke210 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X210-20S
- 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 SUJ40X210-20S
The AirTAC SUJ40X210-20S is a discontinued 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 (usable range 190-210 mm). It features a 1/4" port, an M12x1.25 rod thread, and 21 mm adjustable cushions.
The direct replacement is the SAUJ40X210-20S, matching the bore, stroke, force, and port. The SUJ40X210-20S uses legacy CS1-B/DS1-B switches, whereas the SAUJ upgrades to current CMSG/DMSG/EMSG sensors. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X210-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X210-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X210-20S |
| Bore size | Ø40 mm |
| Stroke | 210 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 SAUJ40X210-20S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAUJ40X210-20S 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 SUJ40X210-20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×210 | 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 SUJ40X210-20S Is Used
Diverter Gate Calibration
Trimming the 20 mm extend window on-site allows operators to dial in the exact push distance for a diverter gate without machining custom spacers.
Product Transfer Stops
Adjustable end positioning lets a transfer stop accommodate varying package lengths on a single conveyor line, tuning the extend stroke from 190 to 210 mm.
Sealing Head Depth
Fine-tune the down-stroke end position for a packaging seal head to compensate for material thickness variations, ensuring consistent crimp depth.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X210-20S with the SAUJ40X210-20S
To replace the discontinued SUJ40X210-20S, order the direct replacement SAUJ40X210-20S, which matches the 40 mm bore, 210 mm stroke, 1/4" port, and FA/LB mounting. Choose the -20 mm adjust window if your mechanism needs field tuning between 190 and 210 mm. Because this is an -S model, note the sensor change from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG. For this 210 mm stroke, verify side-load limits to prevent guide wear. The stop screw sets end position only; it is not a lock.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X210-20S
- ✓ 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 SUJ40X210-20S FAQ
Yes, the SUJ40X210-20S is discontinued. The direct replacement is the SAUJ40X210-20S, which matches the 40 mm bore, 210 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 switches.
The external stop screw provides a 20 mm adjust window, allowing the extend stroke to be shortened from the 210 mm maximum down to 190 mm on-site.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X210-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X210-20S replacement — usually within 7-8 hours.