Meat Grinders and Mincers
A grinder or mincer typically includes a hopper, feed throat, screw, knife, plate and retaining ring. The screw advances material while the knife shears it against the plate.
A sharp, flat knife-and-plate pair cuts cleanly. Wear, reversed knives, damaged plates, loose assembly or excessive clearance crush material and raise temperature.
Throughput depends on product size, temperature, connective tissue, plate restriction and motor load. Forcing frozen or oversized pieces can stall the machine or damage the cutting set.
Cold lean and firm fat retain particle definition. Repeated grinding, warm equipment and friction encourage fat smearing, protein damage and faster microbial growth.
Hands must not enter the feed throat, and push tools, guards and interlocks should remain in place. Clearing blockages and changing plates require isolation from power.
Disassemble the head, screw, knife, plate and seals; remove trapped material and inspect for metal damage. Verify product temperature, particle definition and component condition before release.
Related in the Codex
References
- SRC-0005
- SRC-0009
- SRC-0010
- SRC-0039
- SRC-0044
- FAO Small-Scale Sausage Production — Layout and Equipment
- FDA Food Code 2022