Definition

1. Noun:
   • A rock drill bit with cruciform cutting edges: A "cross bit" is a specialized tool used in mining and drilling operations. It features a cross-shaped (cruciform) cutting head, typically with four sharp edges arranged in a cross pattern. This design allows for efficient cutting and breaking of rock.

Examples of Usage

• Noun:
  • The miners replaced the worn drill bit with a new cross bit.
  • A cross bit is often used for drilling blast holes in hard rock formations.

Advanced Usage

• Technical Specification: In technical contexts, a "cross bit" may be specified by its material (e.g., tungsten carbide cross bit) or its intended rock type.
  • For granite, we recommend a high-grade steel cross bit.

Variants and Related Words

• Cross-bit (adj): Sometimes used as a hyphenated compound adjective.
  • The cross-bit design is known for its durability.
• Rock drill bit (n): A general term for bits used in drilling rock, under which the cross bit is a specific type.
• Cruciform bit (n): A synonym emphasizing the cross-shaped form.

Synonyms

• Cruciform drill bit: Emphasizes the cross-shaped cutting edges.
• X-bit: An informal or shorthand term in some industrial contexts.

Related Phrases

• To fit a cross bit: To install or attach a cross bit to a drilling machine.
  • The operator will fit a cross bit before starting the new shaft.
• Cross bit wear: Refers to the degradation of the bit's cutting edges over time.
  • Regular inspection for cross bit wear is essential for safety.

Noun

1. a rock drill having cruciform cutting edges; used in mining