Hong Kong Regulations

FACTORIES AND INDUSTRIAL UNDERTAKINGS (ABRASIVE WHEELS) REGULATIONS - REGULATION 6

Speeds of spindles

Caution: This is a past version. See the current version here.

(1) There shall be securely affixed to every power driven machine having any
spindle on which an abrasive wheel is, or is intended to be, mounted a notice,
in English and Chinese, specifying-

   (a)  in the case of each such spindle (other than a spindle to which
        sub-paragraph (b) or (c) applies), its maximum working speed;

   (b)  in the case of any such spindle for which there are provided
        arrangements for operating the spindle at more than one specific
        working speed, each specific speed; and

   (c)  in the case of any such spindle for which there are provided
        arrangements for operating the spindle at an infinite number of
        working speeds within a specified range, the maximum and minimum
        working speeds of the spindle.

(2) No spindle shall, while an abrasive wheel is mounted on it, be operated at
a speed in excess of the maximum working speed specified under this regulation
for that spindle.

(3) The proprietor of an industrial undertaking shall, when so required by an
inspector, provide the inspector with all such facilities and information as
are necessary to enable him to determine the working speed of any spindle,
shaft, pulley or other appliance which is used to operate an abrasive wheel.

(4) The speed of every air driven spindle on which an abrasive  wheel is
mounted shall be controlled by a governor or other device so that the speed of
the spindle does not at any time exceed the maximum working speed specified
for that spindle in accordance with paragraph (1).

(5) Every governor and other device used for controlling the speed of an air
driven spindle on which an abrasive wheel is mounted shall be properly
maintained.