Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40
The AirTAC Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40 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 SAUJ100X85-40
The AirTAC SAUJ100X85-40 is a double-acting, single-rod profile cylinder with an on-site adjustable extend stroke. An external stop screw lets you shorten the nominal 85 mm stroke by up to 40 mm, yielding a usable working range of 45-85 mm. It features a 1/2 inch port, an M20x1.5 rod thread, and 29 mm adjustable air cushions. The extruded aluminum barrel makes it shorter than an ISO 15552 cylinder of the same bore.
This 100 mm bore generates 3927 N push and 3681 N pull at 0.5 MPa, peaking at 801 kgf at 1.0 MPa. For sizing, the safe working load is roughly 2356 N, and it can vertically lift about 200 kg with a 2:1 margin. This SKU lacks a magnet, so it cannot accept CMSG or DMSG sensors. If you need higher ambient heat, Viton H seals raise the operating limit to 150 C.
Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40 Technical Specifications
| Model | Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40 |
|---|---|
| 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 SAUJ100X85-40
| 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 SAUJ100X85-40 Is Used
Press Fit Tuning
Allows operators to dial in the exact 45-85 mm extend position for seating bearings without changing hard stops.
Package Diverter
Adjusts the extend stroke on-site to accommodate varying box sizes on a sorting line.
Pallet Stopper
Trims the extend distance to halt pallets precisely, compensating for mechanical wear over time.
Is the Airtac SAUJ100 Adjustable Cylinder SAUJ100X85-40 the Right Cylinder?
When sizing this actuator, look at the neighboring bores: an 80 mm bore yields 2513 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. Choose the SAUJ over a fixed SAU when your machine assembly needs slight extend-position tuning without buying a new cylinder. The 40 mm adjust window is ideal for final mechanical timing. Mounting options include Basic, FA flange, and LB foot, sharing compatibility with the AirTAC SC series. Because this SKU has no -S magnet, it cannot support magnetic sensing. For any stroke, ensure external guidance to prevent side-loading; while the stop screw sets the end position, it is not a load lock.
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 SAUJ100X85-40 FAQ
At 0.5 MPa it provides 3927 N push and 3681 N pull. Push force is 5497 N at 0.7 MPa, 7068 N at 0.9 MPa, and the theoretical max is 801 kgf at 1.0 MPa. The nominal 85 mm extend stroke can be shortened by up to 40 mm via an external stop screw, giving a 45-85 mm working range.
The external stop screw mechanically limits the piston extension to set the end position. This cylinder lacks a -S magnet, so it cannot take sensors. It does not hold load on air loss; the cushion only decelerates. For load holding, use an external rod lock or pilot-operated check valve.
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