Ingersoll Rand 99V Serie Manual De Operación Y Mantenimiento página 19

Guards, Flanges and Spacers for 99V Grinders
Using Depressed Center Wheels
Never operate the Grinder without the Wheel Retaining Screw (56 or 56A) installed in its proper place in the end of the arbor. Always securely tighten
the Wheel Retaining Screw before operating the Grinder.
(Dwg. TPA861–5)
Guards, Flanges and Spacers for 99V Grinders
Using Cup and Saucer Wheels
(Dwg. TPA862–3)