Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 850mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke850 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S
The AirTAC SAIJ100X850-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 5497N of push force at 0.7 MPa and features a 25mm carbon steel rod with an M20x1.5 thread. Because this SKU carries a -100 adjustment code, you can dial back the nominal 850mm travel to any effective length between 750 and 850mm during commissioning without swapping the cylinder or adding external stops.
This unit includes a -S magnet for use with AirTAC CMSE reed and DMSE electronic sensors, and features a SUS304 stainless steel rod for corrosion resistance. The extruded aluminum barrel provides sensor grooves on both sides. It uses PT tapered ports (G1/2) and offers variable air cushioning at both ends. Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
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 SAIJ100 Adjustable Cylinder SAIJ100BX850-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×850 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S Is Used
Variable End-Stop Machining
Fine-tune the 750-850mm stroke window on the fly to accommodate different part lengths during machining operations.
Product Changeover Lines
Quickly adjust the rear stopper during line changeovers to set new extended positions without replacing the entire cylinder.
Long-Stroke Material Handling
Manage long-travel sorting or push-off tasks on conveyors, relying on the 5497N force to move heavy goods reliably.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S the Right Cylinder?
Choose this 100mm bore cylinder when an 80mm bore (3518N push at 0.5 MPa) cannot generate enough force, but a 125mm bore is overkill. The adjustable 750-850mm window is ideal for product changeovers where exact end-positioning varies. It uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR mounts. To replace an ISO 15552 cylinder, match the 100mm bore, 850mm stroke, 100mm adjustment, PT G1/2 ports, and -S magnet.
Because the 850mm stroke is long, the 25mm rod still requires an external guide to prevent excessive side-loading. If your application requires true load-holding without continuous air pressure, the rear stopper here will not act as a brake; you should look at the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/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/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-100S FAQ
At an operating pressure of 0.7 MPa, this 100mm bore cylinder generates 5497N of push force and 5198N of pull force. It can reach a maximum push force of 7068N at 0.9 MPa.
The rear adjuster allows you to shorten the nominal 850mm stroke by up to 100mm, providing a usable travel window of 750 to 850mm. This stopper only sets the travel end and does not lock the load without live air.
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