Castor special tandem for sectional door.
This model is about 5 times more durable than the classic models on the market, thanks to the sealed precision ball bearing we have assembled. We guarantee a lifespan of 80,000 cycles compared to the standard 15,000 cycles. The play in the bearing is minimized to prevent dust entry. With this model, you can adjust the pressure force of the door by opening or closing the fork angle more or less. Once tightened, the DIN base nut with serrated collar will not loosen.
The rod is zinc-plated along its entire length, which prevents the assembly from oxidizing. Nylon is the most durable material for this type of product subjected to intensive use.