Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-20
The AirTAC SAIJ80X700-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end-of-travel position without adding external stops. With a nominal 700 mm stroke and a 20 mm adjustment range, it provides a usable travel window of 680 to 700 mm to perfectly dial in machine stops during commissioning. This 80 mm bore generates 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it well-suited for heavy-duty positioning tasks.
This SKU features a SUS304 stainless steel rod (option B) for superior corrosion resistance and features PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides, though this specific unit is configured without a magnet. It supports standard variable air cushions at both ends and operates at speeds between 30 and 800 mm/s. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX700-20 Is Used
Product Changeovers
Dial in the 680-700 mm travel window during format changes on packaging lines, using the rear screw to set new end positions without replacing hardware.
Material Diversion
Provides robust 2513 N push force at 0.5 MPa to deflect heavy pallets or workpieces on a conveyor, with fine-tuning to accommodate varying package depths.
Long-Stroke Pressing
Executes 700 mm travel pressing operations where exact end-positioning is critical, allowing a 20 mm trim to compensate for mechanical wear over time.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-20 the Right Cylinder?
Select this 80 mm bore when an application requires substantial thrust—up to 2513 N at 0.5 MPa—over a long 700 mm travel distance. If your process demands less force, stepping down to a 63 mm bore yields 1559 N, whereas upgrading to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for product changeovers on a line, allowing operators to trim the stroke by up to 20 mm rather than swapping out the entire cylinder for a fixed-stroke SAI variant.
Because the 700 mm stroke is quite long, the 25 mm rod diameter should be paired with an external guide to prevent excessive side-loading and rod deflection. Remember that the rear adjuster acts only as a travel stop to set deceleration alongside the air cushion; it is not a locking device. For applications requiring the load to be held without live air pressure, consider an AirTAC SAIL or BSAI cylinder, or utilize an external pilot-operated check valve.
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 SAIJ80 Adjustable Cylinder SAIJ80BX700-20 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the effective travel from the nominal 700 mm down to 680 mm, creating a 680-700 mm usable window. This stopper fine-tunes the end position at commissioning but does not lock the load without continuous air pressure.
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