| 摘要 |
A tracking disc (10) for a roller (1, 3, 4) for a conveyor belt roller, the disc (10) comprising i) a bore (11) for receiving the roller (1, 3, 4), ii) a resilient clamping portion (13) surrounding the bore (11), iii) a clamping member (12) received around the perimeter of the clamping portion (14) for clamping the disc (10) to the roller (1, 3, 4), and iv) an upstanding flange (11a) at least 10 mm high.
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