Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50S
The AirTAC SAIJ80X80-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 80 mm stroke by up to 50 mm. This creates a 30-80 mm usable travel window, ideal for product changeovers on a line without swapping the physical cylinder. It delivers 2513 N of push force at 0.5 MPa and 3518 N at 0.7 MPa.
This SKU includes a SUS304 stainless steel rod for superior corrosion resistance and carries the -S magnet option for direct mounting of AirTAC CMSE reed and DMSE solid-state sensors in the dual-sided barrel grooves. It uses PT G3/8 ports and relies on variable air cushions at both ends to decelerate the load.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80BX80-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SAIJ80BX80-50S Is Used
Variable End-Stop Tuning
Dial in the exact retract position from 30 to 80 mm during commissioning to perfect a pressing operation without machining external spacers.
Product Size Changeover
Quickly adapt the stroke window when a conveyor line switches to a different product size, using the rear screw to set the new end position.
Machine Setup Adjustment
Fine-tune the travel end during initial machine build or maintenance, using the 25 mm rod and M20x1.5 thread to handle robust mechanical loads.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-50S the Right Cylinder?
Choose this 80 mm bore when your application requires the 2513 N thrust at 0.5 MPa, stepping up from a 63 mm bore (1559 N) for heavier pressing or clamping. The 50 mm adjustment range is significantly larger than smaller codes, providing massive flexibility for variable end-stops during machine setup, unlike a fixed-stroke SAI cylinder. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 80 mm stroke is short, side-load risks are minimal, but always guide the load if it is heavy. The rear adjuster is a travel stop, not a lock; for true load-holding without live air, select the SAIL or BSAI series instead.
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 SAIJ80BX80-50S FAQ
At 0.5 MPa it provides 2513 N push and 2268 N pull force. At 0.7 MPa the push force is 3518 N. The operational speed range is 30-800 mm/s.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from the nominal 80 mm down to 30 mm. It is a travel stop, not a lock, so it will not hold the load without live air pressure.
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