Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 950mm 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
- Stroke950 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-20
The AirTAC SAIJ80X950-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 930 and 950 mm. Delivering a robust 4523 N of push force at 0.9 MPa, it handles heavy duty positioning with ease. The barrel is extruded aluminum, distinguishing it from tie-rod designs, and includes sensor grooves on both sides.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and pairs with PT tapered port threads. The rear adjuster acts purely as a mechanical stop to dial in the exact end position during commissioning; it is not a lock and will not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 950 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 SAIJ80BX950-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×950 | 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 SAIJ80BX950-20 Is Used
Machine Changeover
Dial in the exact 930-950 mm end-stop during product size changes without physically swapping cylinders or adding external shims.
Long-Stroke Forming
Provides 4523 N of thrust at 0.9 MPa for pressing and forming tasks, with the rear screw allowing precise bottoming tuning.
Extended Push-Off
Handles long-travel material rejection on conveyor lines, using the adjuster to synchronize the push distance perfectly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-20 the Right Cylinder?
Choose this 80 mm bore when you need more thrust than a 63 mm cylinder provides (2182 N at 0.7 MPa) but want to avoid the larger footprint and 5497 N output of a 100 mm unit. The 20 mm adjustment range is perfect for applications requiring variable end-stops or product changeovers without swapping the entire cylinder. Because the 950 mm stroke is substantial, an external guide is recommended to prevent excessive side-loading on the rod.
When specifying a replacement, match the 80 mm bore, 950 mm stroke, 20 mm adjustment, PT G3/8 port, and Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting set. This model does not include a magnet; add the -S suffix if you require CMSE reed or DMSE electronic solid-state sensors for position feedback.
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 SAIJ80BX950-20 FAQ
The rear adjuster is a mechanical stop that lets you trim the effective stroke back by up to 20 mm, creating a 930-950 mm usable travel window. It allows fine-tuning of the end position during setup but does not lock or hold the load without continuous air pressure.
At 0.9 MPa operating pressure, the 80 mm bore generates a push force of 4523 N and a pull force of 4080 N. It operates at speeds between 30 and 800 mm/s.
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