Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-50 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 SAIJ100BX850-50
The AirTAC SAIJ100X850-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 850 mm stroke that can be fine-tuned backward by up to 50 mm, yielding a precise 800-850 mm usable travel window. In the 100 mm bore class, it generates 3927 N of push force at 0.5 MPa and reaches a maximum of 801 kgf at 1.0 MPa.
This unit features a SUS304 stainless steel rod for superior corrosion resistance and operates with PT tapered ports. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Because the stroke extends to 850 mm, the 25 mm rod diameter should be paired with an external guide to prevent excessive side loading on the piston.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-50 |
|---|---|
| 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 SAIJ100BX850-50
| 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 SAIJ100BX850-50 Is Used
Product Size Changeovers
Dial in the exact 800-850 mm end position during packaging line format changes without physically replacing the cylinder or adding external mechanical stops.
Long-Stroke Material Handling
Moves heavy payloads along an 850 mm path using 3927 N of thrust at 0.5 MPa, with the rear screw providing final positioning tweaks during machine commissioning.
Corrosive Assembly Presses
Leverages the SUS304 stainless steel rod for moisture-resistant actuation while applying up to 801 kgf of maximum pressing force in humid manufacturing environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-50 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires substantial thrust—3927 N push at 0.5 MPa—that a smaller 80 mm bore (2513 N) cannot provide, but without stepping up to the heavier 125 mm class. The 50 mm rear adjuster is ideal for product changeovers, allowing operators to dial in the exact end-of-stroke position from 800 to 850 mm without swapping hardware. For fixed-travel needs without commissioning adjustments, the standard SAI cylinder is a simpler alternative.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 850 mm stroke, PT port thread, and mounting style. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR options. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for dead-air load holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ100BX850-50 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At its maximum 1.0 MPa pressure, it delivers up to 801 kgf of push force.
The rear adjuster screw acts as an external stopper that trims the effective travel back from the 850 mm nominal stroke, creating a usable 800-850 mm window. It decelerates the piston at the retract end but does not lock the load without continuous air pressure.
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