Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40S
The AirTAC Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40S 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 SAUJ100X85-40S
The AirTAC SAUJ100X85-40S is a double-acting, single-rod profile cylinder with an on-site adjustable extend stroke. An external stop screw lets you trim the working stroke by up to 40 mm, giving a usable extend range of 45 to 85 mm. The 100 mm bore delivers substantial power, pushing with 3927 N and pulling with 3681 N at 0.5 MPa. It features a 1/2 inch port and a 25 mm piston rod.
This extruded aluminum profile body is more compact than an ISO 15552 cylinder of the same bore. The -S suffix means a built-in magnet is included for CMSG, DMSG, or EMSG position switches. For sizing, a safe working load is roughly 2356 N (about 60% of the 0.5 MPa push force), translating to a vertical lift capacity of approximately 200 kg with a 2:1 safety margin.
Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40S Technical Specifications
| Model | Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40S |
|---|---|
| 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 SAUJ100X85-40S
| 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 SAUJ100X85-40S Is Used
Press Fit Dialing
Allows operators to fine-tune the 45 to 85 mm extend stroke on-site for pressing bearings to exact depths without changing cylinders.
Variable Carton Sealing
Provides adjustable end-position stopping for different flap heights, using the 40 mm trim window to accommodate changing package sizes.
Pallet Positioning Stops
Delivers 3927 N of push force to act as a robust physical stop, with the external screw allowing quick height adjustments for varied pallet loads.
Is the Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40S the Right Cylinder?
When sizing this unit, look at neighboring bores: an 80 mm bore provides 2513 N push at 0.5 MPa, while this 100 mm bore yields 3927 N. Choose the SAUJ over a fixed-stroke SAU when your machine assembly requires minor on-site stroke tuning without buying a new cylinder. The 40 mm adjust window is ideal for dialing in exact end positions. Basic, FA, and LB mountings are available, sharing compatibility with the AirTAC SC series. The -S magnet supports electronic sensing. For strokes at or 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 SAUJ100 Adjustable Cylinder SAUJ100X85-40S FAQ
At 0.5 MPa it pushes with 3927 N and pulls with 3681 N. Push force is 5497 N at 0.7 MPa and 7068 N at 0.9 MPa, with a theoretical max of 801 kgf at 1.0 MPa. The nominal 85 mm extend stroke can be shortened by up to 40 mm on-site via the external stop screw, yielding a 45 to 85 mm usable range.
The -S suffix indicates a built-in piston magnet for mounting CMSG, DMSG, or EMSG reed or electronic sensors. Note that the stop screw only sets the end position; it is not a load lock. A plain cylinder drifts on air loss because the cushion only decelerates. Use an external rod lock or pilot-operated check valve for secure load holding.
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