Airtac SAU Standard Air Cylinder SAU100X420
The AirTAC Airtac SAU Standard Air Cylinder SAU100X420 is a genuine double-acting profile-type standard air cylinder with a Ø100mm bore and 420mm stroke, 1/2" 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.
- BoreØ100 mm
- Stroke420 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SAU Standard Air Cylinder SAU100X420
The AirTAC SAU100X420 is a double-acting profile-type cylinder engineered for heavy-duty tasks, delivering a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. Built with an extruded aluminum barrel, it provides a shorter overall length than an ISO 15552 cylinder of the same bore, granting a significant space advantage in tight machinery layouts. It features a 1/2 inch air port, an M20x1.5 rod thread, and a 29 mm adjustable air cushion at both ends to decelerate the piston smoothly.
For practical sizing, plan for a safe working load of roughly 2356 N, which accounts for seal friction at 0.5 MPa. In a vertical lift scenario, this translates to hoisting about 200 kg with a 2:1 safety margin. This specific SKU lacks the -S magnet, meaning it cannot support CMSG, DMSG, or EMSG magnetic switches. If your environment exceeds the standard -20 to +70 C range, you can opt for Viton H high-temperature seals rated for 0-150 C.
Airtac SAU Standard Air Cylinder SAU100X420 Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU100X420 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø100 mm |
| Stroke | 420 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SAU100X420
| SAU | Profile-type standard cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×420 | 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 SAU100X420 Is Used
Heavy Press Ejection
Utilizes the full 3927 N push force at 0.5 MPa to eject stamped metal components from a 100-ton hydraulic press, leveraging the 420 mm stroke to clear the die area completely.
Pallet Dispenser Pusher
Moves empty pallets into a high-speed packaging line, where the compact profile length prevents interference with adjacent conveyor structures while handling loads up to 200 kg vertically.
Injection Mold Separation
Provides the robust 3681 N pull force required to break the vacuum seal on large plastic injection molds, utilizing the adjustable 29 mm cushion to gently decelerate the heavy platens.
Is the Airtac SAU Standard Air Cylinder SAU100X420 the Right Cylinder?
When sizing this actuator, consider the neighboring bores to ensure optimal performance: the SAU80 provides 2513 N of push force at 0.5 MPa, while there is no larger standard SAU bore beyond 100 mm. Because this model features a 420 mm stroke, you must account for potential rod bending and side loads—implementing external guide rails is highly recommended to prevent premature wear. Mounting is straightforward using AirTAC SC-series accessories, including LB foot brackets, FA/FB flanges, and CA/CB clevises.
Keep in mind that a standard double-acting cylinder does not hold its position if air pressure drops or the valve is centered; the piston will drift, and the air cushion acts only to decelerate at stroke end, not as a braking mechanism. To suspend a load safely during an emergency stop or pressure loss, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 SAU100X420 FAQ
The SAU100X420 delivers a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa, the push force is 5497 N, and the theoretical maximum force is 801 kgf at 1.0 MPa. This bore size utilizes a 1/2 inch air port and operates at speeds between 30-800 mm/s.
No, this specific SKU does not include the -S magnet option, so it cannot accommodate CMSG, DMSG, or EMSG magnetic switches. For position feedback, you would need to specify a model with the -S suffix or use external mechanical limit switches.
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