Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S
The AirTAC Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 50mm stroke, 3/8" 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.
- BoreØ80 mm
- Stroke50 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S
The AirTAC SAUJ80X50-20S is a double-acting single-rod profile cylinder with an on-site extend stroke trim of up to 20 mm. The nominal 50 mm stroke serves as the maximum, yielding a usable 30 to 50 mm forward travel set via an external stop screw. It features a 3/8" port, an M20x1.5 rod thread, and 28 mm adjustable air cushions. The extruded aluminum profile barrel makes it shorter than an ISO 15552 cylinder of the same bore.
This 80 mm bore generates 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa. A practical computed insight: the safe working load is roughly 1508 N (about 60% of the 0.5 MPa push figure), translating to a vertical lift capacity of approximately 128 kg with a 2:1 margin. The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG sensors.
Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S Technical Specifications
| Model | Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| 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, 28 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S Is Used
Press Fit Depth Tuning
Allows operators to dial in the exact 30 to 50 mm insertion depth for bearings on-site using the external stop screw.
Variable Height Pallet Stops
Provides adjustable end-position stopping for mixed pallet sizes, trimming the extend stroke up to 20 mm as needed.
Gripper Jaw Calibration
Enables precise field adjustment of gripper opening distances without changing out the entire actuator assembly.
Is the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S the Right Cylinder?
When sizing this unit, look at the neighboring bores: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore provides 3927 N. Choose the 80 mm bore when your application demands exactly 2513 N at 0.5 MPa. Select the SAUJ over a fixed SAU cylinder when you need field tuning of the end position without buying a new unit. The 20 mm adjust window is ideal for fine-tuning clamping or pressing depths. Mounting options include Basic, FA flange, and LB foot, sharing compatibility with the AirTAC SC series. The -S magnet permits electronic or reed switch placement. For any stroke over 300 mm, always use external guidance to prevent side-load damage.
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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X50-20S FAQ
This 80 mm bore cylinder has a 50 mm nominal extend stroke that can be shortened by up to 20 mm on-site, giving a 30 to 50 mm usable window. It generates 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The theoretical maximum force is 513 kgf at 1.0 MPa. It uses a 3/8" port and 28 mm adjustable cushions.
No, the external stop screw only sets the end position and the air cushion only decelerates the piston near the end of travel; neither acts as a load lock. If air is lost or the valve is centered, the piston will drift. For vertical load holding, you must install an external rod lock or a pilot-operated check valve.
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