| 摘要 |
<p>One embodiment disclosed comprises a roller guide (202) device comprising at least one roller and a respective braking apparatus (224) for the roller. The braking apparatus in this embodiment comprises a disc brake. In this same embodiment, the disc brake performs a braking operation by pressing a pair of pads (252) on both sides of a roller. The disc brake may be supported by the base of the roller guide device, and comprise a single-piston mechanism that affects movement of the pair of pads.</p> |
