What protective devices should be used on gears, belts and revolving parts of machinery?

What protective devices should be used on gears, belts and revolving parts of machinery?

• A. Properly installed guards and shields
• B. Lubrication of moving parts
• C. Emergency stop switches only
• D. PPE such as gloves

Answer: (B)

Protective devices on gears, belts and revolving parts must form a physical barrier between moving parts and people. Properly installed guards and shields do this by enclosing the danger area and controlling access, which helps prevent entanglement, pinching, or injury from any flying fragments or parts that could break loose. Lubrication helps the machine run smoothly by reducing friction and heat, but it does not provide a barrier or prevent contact with moving parts, so it isn’t a protective device. Emergency stop switches are important for stopping equipment quickly in a danger situation, but they don’t prevent contact during normal operation. PPE like gloves may seem protective, but around rotating parts they can snag and pull fingers or clothing into the machinery, making them an unsafe primary protection.

Protective devices on gears, belts and revolving parts must form a physical barrier between moving parts and people. Properly installed guards and shields do this by enclosing the danger area and controlling access, which helps prevent entanglement, pinching, or injury from any flying fragments or parts that could break loose. Lubrication helps the machine run smoothly by reducing friction and heat, but it does not provide a barrier or prevent contact with moving parts, so it isn’t a protective device. Emergency stop switches are important for stopping equipment quickly in a danger situation, but they don’t prevent contact during normal operation. PPE like gloves may seem protective, but around rotating parts they can snag and pull fingers or clothing into the machinery, making them an unsafe primary protection.