Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S
The AirTAC Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 280mm stroke, 1/4" air ports and adjustable end cushioning. Its hard-anodized aluminum-profile barrel is shorter than an ISO 15552 cylinder of the same bore, and it shares SC-series mounting accessories.
- BoreØ40 mm
- Stroke280 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
- 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 SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S
The AirTAC SAUJ40X280-75S is a double-acting, single-rod profile cylinder with an on-site stroke adjustment window. An external stop screw lets you shorten the extend stroke by up to 75 mm, giving a usable working range of 205 to 280 mm. The extruded aluminum barrel makes it shorter than an ISO 15552 unit of the same bore. It features a 1/4" port, an M12x1.25 rod thread, and a 21 mm adjustable air cushion at each end.
This 40 mm bore generates 628 N push and 528 N pull at 0.5 MPa, peaking at 1130 N push at 0.9 MPa. A safe working load is roughly 377 N, allowing a vertical lift of about 32 kg with a 2:1 margin. The -S suffix means a piston magnet is built in for CMSG, DMSG, or EMSG sensors. Standard seals handle -20 to +70 C, while a Viton H option extends heat resistance to 150 C.
Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S Technical Specifications
| Model | Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAU series datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G (BSPP). A high-temperature seal (0-150 °C) is available.
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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAU-family variants: SAUD (double rod), SAUJ (adjustable stroke), SAUF (with built-in solenoid valve), and SAU-S with built-in magnet. Seals: TPU (blank) / Viton H / NBR N. Sensor switches: CMSG / DMSG / EMSG.
Where the Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S Is Used
Variable Depth Drilling
Tune the 75 mm extend window on-site to precisely set drill depth for multiple material thicknesses without changing tooling.
Adjustable Diverter Arm
Trim the stroke to deflect varying package sizes on a conveyor line, ensuring gentle contact without repositioning the cylinder.
Carton Sealing Press
Dial in the exact 205 to 280 mm extend position to seal different carton heights accurately using the external stop screw.
Is the Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S the Right Cylinder?
Size this 40 mm bore against its neighbors: a 32 mm bore yields 402 N push at 0.5 MPa, whereas a 50 mm bore provides 982 N. Choose the SAUJ over a fixed SAU when you need to tune the extend end-position on the machine without buying multiple cylinders. The 75 mm adjustment window is ideal for dialing in exact travel. Mounting options include Basic, FA flange, and LB foot, sharing compatibility with the AirTAC SC series. Because the -S magnet is present, you can fit CMSG/DMSG/EMSG switches. For this 280 mm stroke, ensure external guidance to prevent side-load wear.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB — same as SC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X280-75S FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. Push force is 879 N at 0.7 MPa and 1130 N at 0.9 MPa, with a theoretical max of 128 kgf at 1.0 MPa. The nominal 280 mm extend stroke can be shortened by up to 75 mm via the external stop screw, yielding a 205 to 280 mm working range.
The -S suffix indicates a built-in piston magnet for mounting CMSG, DMSG, or EMSG sensors. Note that the stop screw only sets the end position; it is not a load lock. The cylinder will drift on air loss because the air cushion only decelerates. Use an external rod lock or pilot-operated check valve to hold a load securely.
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