Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-50S
The AirTAC SAUJ100 Adjustable Cylinder SAUJ100X85-50S 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
- 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 SAUJ100 Adjustable Cylinder SAUJ100X85-50S
The AirTAC SAUJ100X85-50S is a double-acting, double-rod profile cylinder with an on-site extend stroke adjustment window of 50 mm. You can trim the nominal 85 mm stroke down to a 35 mm working length using the external stop screw. It features a 1/2" port, an M20x1.5 rod thread, and a hard-anodized aluminum extruded barrel that is physically shorter than an ISO 15552 cylinder of the same bore. The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG position switches.
It operates at 30-800 mm/s with 29 mm adjustable air cushions at both ends. A high-temperature Viton H seal option expands the operating range from -20...+70 C up to 0-150 C.
Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-50S Technical Specifications
| Model | Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-50S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-50S
| 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 SAUJ100X85-50S Is Used
Press Fit Tuning
Allows operators to dial in the exact 35 to 85 mm extend position for seating bearings without swapping out physical spacers.
Variable Carton Sealing
Adapts the extend stroke on-site to accommodate different box heights on a packaging line using the 50 mm adjustment window.
Is the Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-50S the Right Cylinder?
Mounting options include Basic, FA flange, and LB foot, with physical mounting compatibility matching the AirTAC SC series only. The 50 mm adjust window is ideal when final machine timing requires exact extend positioning without machining new hard stops. Because this is an -S SKU, it is ready to accept CMSG, DMSG, or EMSG sensors. Since the 85 mm stroke is under 300 mm, side-load guide concerns are minimal, but always guide the load externally. Remember the stop screw sets the end position; it is not a load lock. The cylinder will drift on air loss, and the cushion only decelerates near the end of travel. For secure load holding, install an external rod lock or a pilot-operated check valve.
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 SAUJ100X85-50S FAQ
The theoretical maximum is 801 kgf at 1.0 MPa. The nominal stroke is 85 mm, but the external stop screw allows you to shorten the extend stroke by up to 50 mm, yielding a usable range of 35-85 mm. It uses a 1/2" port and operates at 30-800 mm/s.
The -S suffix means the piston has a built-in magnet for direct mounting of CMSG, DMSG, or EMSG electronic or reed switches. Regarding load holding, the cylinder does not hold its load if air is lost or the valve is centered; the piston will drift. The 29 mm air cushion only decelerates the piston near the end of stroke and the stop screw only sets the end position. For true load holding, you must use an external rod lock or a pilot-operated check valve.
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