New Jersey Administrative Code
Title 12 - LABOR AND WORKFORCE DEVELOPMENT
Chapter 185 - PITS AND QUARRIES (SAFETY REGULATION NUMBER 12)
Subchapter 21 - GUARDING OF EQUIPMENT AND MACHINERY
Section 12:185-21.5 - Grinding wheels

(a) Stationary grinding machines shall be sufficiently heavy and rigid so as to prevent dangerous vibration or shall be securely mounted on substantial floor benches, foundations or other adequate and safe structures.

(b) Portable grinders shall not be used as bench grinders unless they are securely clamped into place, have ample clearance between the wheels and the bench and are equipped with standard wheel and arbor guards.

(c) All grinding wheels shall be provided with a hooded guard of sufficient strength to withstand the shock of a bursting wheel.

(d) The guard shall be adjusted close to the wheel and extend forward over the top of the wheel to a point at least 30 degrees beyond a vertical line drawn through the center of the wheel.

(e) Bench grinders, disc grinders and floor stands shall be equipped with readily adjustable work rests of rigid construction. They shall be securely adjusted to the wheel with a maximum clearance of 1/8 inch, and when dangerously worn shall be repaired or replaced. Work rests may be removed when the nature or size of the material will not permit their use.

(f) Arbor ends must be guarded.

(g) Grinding wheels shall be provided with safety flanges.

(h) Where a power driven grinding wheel is used, the employer shall provide suitable goggles and it shall be the duty of the workmen to wear such goggles at all times the wheel is used. The wheel shall also be provided with a transparent shield of approved design and shall be used at all times when the work permits.