Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40
The AirTAC Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40 is a genuine double-acting profile-type standard air cylinder with a Ø100mm bore and 850mm 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
- Stroke850 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40
The AirTAC SAUJ100X850-40 is a double-acting, single-rod profile cylinder with an 850 mm maximum extend stroke. An external stop screw lets you trim the extend stroke on-site by up to 40 mm, yielding a usable working stroke of 810-850 mm. The 1/2 inch port and 29 mm adjustable air cushions handle heavy dynamics. This profile barrel is shorter than an ISO 15552 cylinder of the same bore, saving machine space without using tie-rods.
This 100 mm bore delivers 3927 N push and 3681 N pull at 0.5 MPa, reaching 7068 N at 0.9 MPa. A practical computed insight: the safe working load is roughly 2356 N (60% of the 0.5 MPa push force), translating to a vertical lift capacity of about 200 kg with a 2:1 safety margin. Standard TPU seals operate from -20 to +70 C, while a Viton H option extends this to 150 C.
Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40 Technical Specifications
| Model | Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø100 mm |
| Stroke | 850 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 SAUJ100X850-40
| SAU | Profile-type standard cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×850 | 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 SAUJ100X850-40 Is Used
Press Fit Tuning
Allows field adjustment of the extend stroke by up to 40 mm to set precise pressing depth for varying assembly parts without changing the actuator.
Divertor Positioning
Enables on-site stroke shortening to dial in the exact reach of a divertor arm across product format changes on a packaging line.
Pallet Stop Adjustment
Provides a customizable mechanical stop for pallets of differing widths, trimming the extend stroke up to 40 mm to match the load.
Is the Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40 the Right Cylinder?
When sizing this actuator, compare both ways: the 80 mm bore offers 2513 N push at 0.5 MPa, while this 100 mm bore provides 3927 N. Choose the SAUJ over a fixed SAU when your machine assembly requires precise end-position tuning without buying multiple cylinders. Mounting options include Basic, FA flange, and LB foot brackets, sharing compatibility with the AirTAC SC series only. Because this SKU lacks the -S magnet suffix, it cannot accept CMSG or DMSG sensors. Finally, at an 850 mm stroke, you must support the piston rod against bending using external guides to manage side loads.
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 SAUJ100X850-40 FAQ
At 0.5 MPa it provides 3927 N push and 3681 N pull. Push force increases to 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 850 mm extend stroke can be shortened by up to 40 mm on-site using the external stop screw, giving a usable stroke of 810-850 mm.
The external stop screw mechanically sets the extend end position to trim the stroke. It is not a load lock. A plain cylinder drifts on air loss or when the valve is centered, and the 29 mm air cushions only decelerate the piston near the end of travel. To hold a load securely, you must add an external rod lock or a pilot-operated check valve.
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