Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-20
The AirTAC Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-20 is a genuine double-acting profile-type standard air cylinder with a Ø100mm bore and 85mm 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
- Stroke85 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-20
The AirTAC SAUJ100X85-20 is a double-acting single-rod profile cylinder built for on-site stroke adjustment. An external stop screw lets you trim the extend stroke by up to 20mm, giving a usable working stroke of 65-85mm. The 85mm nominal length serves as the maximum travel. It features a hard-anodized aluminum extruded barrel, making it shorter than an ISO 15552 cylinder of the same 100mm bore. It uses a 1/2 inch port and an M20x1.5 rod thread.
This 100mm bore delivers serious force: 3927N push and 3681N pull at 0.5MPa, scaling to 7068N push at 0.9MPa. For sizing, a safe working load is roughly 2356N, or a vertical lift of about 200kg with a 2:1 margin. The stop screw sets the end position but is not a load lock; add an external rod lock for holding. Since this SKU lacks the -S magnet, it cannot take CMSG or DMSG sensors.
Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-20 Technical Specifications
| Model | Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-20 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø100 mm |
| Stroke | 85 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 SAUJ100 Adjustable Cylinder SAUJ100X85-20
| SAU | Profile-type standard cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×85 | 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 SAUJ100 Adjustable Cylinder SAUJ100X85-20 Is Used
Press Fit Tuning
Allows operators to fine-tune the 20mm extend window on-site for pressing bearings without changing hard stops.
Variable Depth Sealing
Adjusts the extend end position precisely for sealing boxes of varying heights on a packaging line.
End-of-Line Forming
Provides adjustable mechanical end stops for metal forming tasks requiring exact 65 to 85mm strokes.
Is the Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-20 the Right Cylinder?
When sizing, step down to an 80mm bore for 2513N push at 0.5MPa, or step up if you exceed the 100mm class. This cylinder is ideal when you need field tuning instead of buying a fixed-stroke SAU and adding external stops. The 20mm adjust window lets you dial in the exact extend position on-site. Mounting options include Basic, FA flange, and LB foot, matching the AirTAC SC series. Because this is a non-magnetized SKU, you cannot mount position sensors. For this 85mm stroke, side-loading is minimal, but always guide the load for strokes over 300mm. Remember the stop screw only sets position; it will not hold the load without live air.
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 SAUJ100 Adjustable Cylinder SAUJ100X85-20 FAQ
This 100mm bore cylinder pushes 3927N and pulls 3681N at 0.5MPa. Push force is 5497N at 0.7MPa and 7068N at 0.9MPa, with a theoretical max of 801kgf at 1.0MPa. The external stop screw shortens the extend stroke by up to 20mm, giving a usable range of 65-85mm. The 85mm nominal stroke is the maximum travel.
An external stop screw mechanically limits the piston extension, letting you set the exact end position on-site. This stop is not a load lock; the cylinder will drift on air loss because the 29mm adjustable air cushions only decelerate the piston near the end of travel. For load holding, install an external rod lock or pilot-operated check valve. Also, this non-S SKU cannot accept magnetic sensors.
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