Section R. 408.13864 - Portable pneumatic grindersRule 3864.
(1) A portable pneumatic grinder shall be operated at a speed of not more than the grinder's rated speed.(2) A line supplying air to a portable pneumatic grinder regulated by a governor shall be equipped with a filter to remove water, contaminated oil and dirt.(3) A portable pneumatic grinder regulated by a governor shall be provided with a continuous lubrication means.Mich. Admin. Code R. 408.13864