Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50
The AirTAC SAIJ80X90-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 90 mm travel by up to 50 mm for a highly versatile 40-90 mm usable window. Delivering 2513 N of push force at 0.5 MPa, it handles substantial loads while featuring a SUS304 stainless steel rod for superior corrosion resistance. The PT tapered port threads ensure a metal-to-metal seal, and the extruded aluminum barrel integrates sensor grooves on both sides for flexible switch placement.
Unlike a fixed-stroke SAI unit, this model lets you fine-tune the retract end-position during commissioning without adding external stops. The rear adjuster acts purely as a travel stop and works alongside standard variable air cushions to decelerate the load; it does not hold the load without live air pressure. For position holding, an external rod lock or a SAIL pneumatic lock cylinder is required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAIJ80BX90-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SAIJ80BX90-50 Is Used
Product Changeover
Quickly adjust the retract distance from 40 to 90 mm to accommodate varying product sizes on a packaging line without changing the cylinder.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning to achieve precise mechanical alignment without external shims.
Variable End Stops
Dial in the exact clamping depth for assembly operations, relying on the 2513 N push force to secure heavy workpieces.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX90-50 the Right Cylinder?
Choose this 80 mm bore when an application demands high thrust, such as 2268 N pull force at 0.5 MPa, alongside variable end-stop positioning. If the 40-90 mm travel window is excessive, stepping down to a 63 mm bore yields 1402 N pull force, whereas moving up to a 100 mm bore provides 3681 N. The robust 25 mm rod and M20x1.5 rod thread handle significant side loads, though any stroke near or over 300 mm necessitates an external guide to prevent binding.
When specifying a replacement, ensure the ISO 15552 footprint matches exactly: 80 mm bore, 90 mm stroke, 50 mm adjustment range, PT port threads, and no magnet (-S omitted). Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found on some standard cylinders.
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 SAIJ80BX90-50 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it achieves a push force of 513 kgf.
The rear adjuster screw allows you to shorten the 90 mm nominal stroke by up to 50 mm, creating a usable travel window of 40 to 90 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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