Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X230-75
The AirTAC Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X230-75 is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 230mm 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
- Stroke230 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 SAUJ40X230-75
The AirTAC SAUJ40X230-75 is a double-acting, single-rod profile cylinder with an external stop screw that lets you shorten the extend stroke by up to 75 mm on-site. The 230 mm nominal stroke serves as the maximum, yielding a usable extend range of 155-230 mm. Featuring a hard-anodized aluminum barrel, it is physically shorter than an ISO 15552 cylinder of the same 40 mm bore. It uses a 1/4" port and an M12x1.25 rod thread.
This bore delivers 628 N push and 528 N pull at 0.5 MPa, peaking at 1130 N push at 0.9 MPa. A practical computed insight: the safe working load is roughly 377 N, or a 32 kg vertical lift with a 2:1 safety margin. The adjustable 21 mm air cushions decelerate the piston near the end of travel, but the stop screw itself sets the end position and is not a load lock. Note this SKU lacks the -S magnet, so it cannot accept CMSG or DMSG sensors.
Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X230-75 Technical Specifications
| Model | Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X230-75 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 230 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 SAUJ40X230-75
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×230 | 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 SAUJ40X230-75 Is Used
Dialing Feed Lengths
Adjusting the extend stroke on-site by up to 75 mm allows operators to fine-tune material push distances without swapping cylinders.
Variable Transfer Stops
Sets a precise mechanical end position for diverter arms on conveyors where product sizes frequently change on the same line.
Packaging Positioning
Provides a customizable extend endpoint for folding or sealing heads that must adapt to different carton dimensions on the fly.
Is the Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X230-75 the Right Cylinder?
When sizing this 40 mm bore, compare it against the 32 mm and 50 mm neighbors. The 32 mm provides 402 N push at 0.5 MPa, while the 50 mm offers 982 N, so choose the 40 mm for medium-duty tasks needing 628 N. Pick the SAUJ over a fixed SAU when your machine assembly requires field tuning of the extend endpoint rather than relying on machining external stops. The 75 mm adjust window is ideal for dialing in exact feeding distances. Mounting options include Basic, FA flange, and LB foot, sharing compatibility with the AirTAC SC series. Because this is a non-magnetized SKU, position sensing is unavailable. For this 230 mm stroke, ensure adequate side-load guidance to prevent uneven seal 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 SAUJ40X230-75 FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. Push force is 879 N at 0.7 MPa, 1130 N at 0.9 MPa, and the theoretical max is 128 kgf at 1.0 MPa. The nominal 230 mm extend stroke can be shortened by up to 75 mm via the external stop screw, giving a usable range of 155-230 mm.
No. The stop screw only sets the extend end position and the 21 mm air cushions only decelerate motion near the ends; neither acts as a brake. If air is lost, the piston drifts. Use an external rod lock or pilot-operated check valve for secure load holding.
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