Airtac SAU Standard Air Cylinder SAU40X425
The AirTAC Airtac SAU Standard Air Cylinder SAU40X425 is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 425mm 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
- Stroke425 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 SAU Standard Air Cylinder SAU40X425
The AirTAC SAU40X425 is a double-acting profile-type cylinder delivering 628 N of push force at 0.5 MPa. Its extruded aluminum barrel makes it shorter than an ISO 15552 cylinder of the same bore, saving valuable machine space. It features a 1/4" port, a 16 mm rod, and 21 mm adjustable air cushions at both ends for smooth deceleration.
For practical sizing, plan for a safe working load of about 377 N at 0.5 MPa, accounting for seal friction. Vertically, it lifts roughly 32 kg with a 2:1 safety margin. This SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. For high-heat environments up to 150 C, specify the Viton H seal option.
Airtac SAU Standard Air Cylinder SAU40X425 Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU40X425 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 425 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 SAU Standard Air Cylinder SAU40X425
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×425 | 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 SAU Standard Air Cylinder SAU40X425 Is Used
Package Diverting
Pushes cartons between conveyor lanes using the 425 mm reach and 377 N safe working load.
Vertical Lift Gate
Raises a lightweight 30 kg access panel in a logistics hub, fitting neatly into tight clearances.
Component Ejection
Clears molded parts from a press bed, relying on the 21 mm cushions to absorb end-of-stroke impact.
Is the Airtac SAU Standard Air Cylinder SAU40X425 the Right Cylinder?
When sizing, the adjacent 32 mm bore yields 402 N push at 0.5 MPa, while the larger 50 mm bore provides 982 N. Because this 425 mm stroke creates a long lever arm, use an external guide to prevent rod bending and premature seal wear under side loads. Mounting uses AirTAC SC-series accessories like LB foot or FA flange. Remember that exhausting air causes the piston to drift; the cushion only decelerates travel and does not lock the load, so add a pilot-operated check valve for vertical holding.
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 SAU Standard Air Cylinder SAU40X425 FAQ
This 40 mm bore cylinder has a 1/4" port and M12x1.25 rod thread. It delivers 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, and a theoretical maximum of 128 kgf at 1.0 MPa.
It is not dimensionally interchangeable with ISO 15552 brackets; use AirTAC SC-series mounts like CA or CB clevis instead. Additionally, this specific SKU lacks a magnet, so it cannot support CMSG, DMSG, or EMSG magnetic sensors.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAU Standard Air Cylinder SAU40X425
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