Jaw crusher components – Blake type Identify the item that is <em>not</em> a component of a Blake jaw crusher assembly.

Introduction / Context:
Jaw crushers (Blake type) are common primary crushers. Knowing their parts helps in maintenance, inspection, and troubleshooting mechanical failures such as toggle breakage or jaw wear.

Given Data / Assumptions:

• Blake jaw crusher includes fixed and movable jaws.
• Drive mechanism converts rotary motion to reciprocating jaw motion.
• Typical parts: pitman, toggles, cheek/check plates, flywheels.

Concept / Approach:
The pitman connects to the eccentric shaft, transmitting motion to the movable jaw via toggles which provide the crushing action and overload protection. Check (cheek) plates protect the side frames. A “hanger” is not a standard component of the Blake jaw crusher mechanism.

Step-by-Step Solution:

Verification / Alternative check:
Manufacturer drawings and maintenance manuals confirm the presence of pitman, toggle(s), cheek plates; “hanger” is not listed as a part.

Why Other Options Are Wrong:

• Check plates (cheek plates): Wear plates protecting side walls.
• Toggles: Linkage transmitting motion and providing a safety relief.
• Pitman: Main moving member attached to eccentric shaft.

Common Pitfalls:
Confusing “cheek plates” with “jaw plates”; both are wear parts but serve different locations (sides vs crushing faces).

Final Answer:
Hanger