This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X275-75, 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 SUJ40X275-75
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X275-75 is a double-acting profile-type standard cylinder with a Ø40mm bore and 275mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X275-75, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke275 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X275-75
- 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 SUJ40X275-75
The AirTAC SUJ40X275-75 is a double-acting, double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 200-275 mm stroke. This compact extruded-aluminum body is notably shorter than an ISO 15552 cylinder of the same bore. It features a 1/4" port, a 16 mm rod, and 21 mm adjustable cushions at each end.
This SUJ model is discontinued; the direct replacement is the SAUJ40X275-75, matching the bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches. As a non-magnet SKU, this cylinder cannot accept a magnetic switch. 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 SUJ40X275-75 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X275-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X275-75 |
| Bore size | Ø40 mm |
| Stroke | 275 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 SAUJ40X275-75 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 SAUJ40X275-75 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 SUJ40X275-75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 SUJ40X275-75 Is Used
Variable Pitch Indexing
Allows on-site extend stroke tuning from 200 to 275 mm to alter part pitch without machining new hard stops.
Adjustable Transfer Pusher
Trims the extend stroke by up to 75 mm to adapt a pusher for varying package sizes on the same line.
Variable Depth Sealing
Sets precise end positions for sealing heads requiring 200 to 275 mm reach, avoiding fixed-stroke rework.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X275-75 with the SAUJ40X275-75
To replace the discontinued SUJ40X275-75, order the SAUJ40X275-75 direct, which preserves the 40 mm bore, 275 mm max stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 75 mm adjust window when you need on-site extend stroke tuning between 200 and 275 mm without swapping cylinders. Because this SKU lacks a magnet, it cannot use sensors; the SAUJ upgrade supports CMSG/DMSG/EMSG switches if you add the -S option. For this 275 mm stroke, verify side-load limits to prevent rod binding. The stop screw sets end position but does not lock the load; for vertical or held loads, install an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X275-75
- ✓ 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 SUJ40X275-75 FAQ
Yes, the SUJ40X275-75 is discontinued. The direct replacement is the SAUJ40X275-75, which matches the 40 mm bore, 275 mm stroke, 75 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 lets you trim the extend stroke by up to 75 mm on-site, giving a usable 200-275 mm stroke. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X275-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X275-75 replacement — usually within 7-8 hours.