Airtac SAIJ80 Adjustable Cylinder SAIJ80BX55-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX55-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 55mm 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
- Stroke55 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX55-40S
The AirTAC SAIJ80X55-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 55 mm nominal stroke by up to 40 mm. This yields a highly versatile 15-55 mm usable travel window, perfect for dialing in exact end positions during machine setup without swapping hardware. It delivers a robust 2268 N pull force at 0.5 MPa.
Built with a SUS304 stainless steel rod and PT tapered ports, this unit integrates dual-side sensor grooves for CMSE reed and DMSE electronic switches. The adjuster functions strictly as an external travel stop for deceleration alongside the built-in air cushions, not a lock, while the extruded aluminum barrel supports a Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting subset.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX55-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX55-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 55 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 SAIJ80BX55-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×55 | 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 SAIJ80BX55-40S Is Used
Machine Setup Tuning
Dial in the exact 15 to 55 mm travel distance during commissioning without adding external stop blocks or changing the cylinder.
Product Changeover
Quickly adapt the end-stop for different product sizes on a single conveyor line using the 40 mm rear adjustment range.
High-Force Positioning
Leverage the 2513 N push force of the 80 mm bore for heavy clamping tasks while retaining precise end-position control.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX55-40S the Right Cylinder?
Choose this 80 mm bore when your application requires high thrust (up to 2513 N push at 0.5 MPa) but demands on-the-fly end-position tuning. If you need less force, stepping down to a 63 mm bore yields 1402 N pull, whereas moving up to a 100 mm bore provides 3681 N. The adjustable rear stop is ideal for product changeovers, letting you fine-tune the 15-55 mm travel window quickly. Because the SAIJ rear adjuster and air cushions only decelerate the load, you must maintain live air pressure to hold position; for true load-holding without air, consider an external rod lock or the SAIL series. To match this ISO 15552 replacement, specify an 80 mm bore, 55 mm stroke, 40 mm adjustment, PT ports, and the -S magnet.
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 SAIJ80BX55-40S FAQ
The cylinder has a 55 mm nominal stroke, but the rear adjuster allows you to shorten the effective travel by up to 40 mm, creating a 15 to 55 mm adjustable window for fine-tuning at commissioning.
At 0.5 MPa operating pressure, it provides 2513 N of push force and 2268 N of pull force. It operates at speeds between 30 and 800 mm/s.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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