White Crank Drive Knee Joint F781E Ball Diameter 12 mm M5 Female Steel for Blinds and Roller Shutters French Manufacture Quality

✅ This spare part for roller shutter will allow the articulation of the crank rod, essential for the box outlet. It is used in the mechanism of a roller shutter, with the guide offset, to allow the rolling of the apron and the axis of the shutter. Made in France, this part replaces a broken or worn knee pad: The rotation of the axes inside the trunk and the rods tend to crumble and show signs of wear due to friction. Installation tip: Shutter in the low position, remove the screws that hold the old knee pad. Remove the knee brace from the rod and the box outlet. She can resist a little, use a release oil. Then place the new part on the outlet and the crank rod, aligned facing the mounting holes, and then install the screws. Please note that this knee brace is not suitable for hexagonal box outlets, but for round and hollow tubes. ✅ The F781ES knee brace allows easy and durable daily use: it allows 10,000 cycles under 30N training effort. The ideal working angle of the workpiece is 30° maximum, so it will be a good idea to mount the pivot under the trunk. It is not suitable to mount it on an exit at 45° or 90°, the movement of the maneuver will be hindered. DIMENSIONS: The universal joint is internal diameter 12mm, outer diameter 18mm, total length is 50mm. This model is white RAL 9010, made of galvanised steel, for a long service life. While it is useful for parts of a roller shutter, it has many varied applications for various mechanisms, which makes it a universal accessory. It is suitable for most manual systems: mechanical pull for single block window, traditional shutter, or renovation. ⚙️ Technical information: Replacement knee support system RAL 9010 white for connection with crank diameter 12 mm. It is supplied with accessories: 2 M5 female screws to ensure the connection of the manual roller shutter.