Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50 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 SAIJ100X850-50
The AirTAC SAIJ100X850-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 850 mm nominal travel by up to 50 mm. This creates an 800-850 mm usable window, allowing precise end-position tuning at commissioning without swapping the cylinder or adding external stops. It features a carbon steel piston rod and PT tapered port threads.
Delivering substantial thrust, this 100 mm bore unit provides 5497 N of push force at 0.7 MPa and reaches 7068 N at 0.9 MPa. The extruded aluminum barrel includes sensor grooves on both sides. If position detection is needed later, you can specify a magnet (-S) to use AirTAC CMSE reed or DMSE electronic solid-state switches.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50 |
|---|---|
| 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 SAIJ100X850-50
| 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 SAIJ100X850-50 Is Used
Product Changeover
Dial in the 800-850 mm travel window during format size changes on a packaging line, using the rear screw to set the exact retract position without re-mounting hardware.
Long-Stroke Pressing
Apply up to 7068 N of push force at 0.9 MPa for heavy pressing or forming tasks, fine-tuning the end-stop to accommodate material thickness variations.
Commissioning Calibration
Trim the stroke by up to 50 mm during machine setup to perfectly align tooling interfaces, avoiding the need to fabricate external spacer blocks.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50 the Right Cylinder?
Choose this 100 mm bore when an 80 mm bore (yielding 4523 N push at 0.9 MPa) is insufficient for the load. The adjustable stroke is ideal for product-size changeovers on a line, letting you fine-tune the retract end-stop on the fly instead of machining new hard stops. For any required load-holding without live air pressure, note that the rear adjuster acts only as a travel stop and not a lock; you would need an external rod lock, a pilot-operated check valve, or a related SAIL lock cylinder.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 850 mm stroke, 50 mm adjustment range, G1/2 port, and mounting style. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR. Because the stroke is 850 mm, the 25 mm rod and M20x1.5 thread still require an external guide to prevent excessive side-loading on long unsupported travel.
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 SAIJ100X850-50 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster acts as a stopper that trims the effective travel, providing an 800-850 mm usable window. It sets the retract end position but does not lock the load without live air pressure.
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