Table 17 Tail brush safety standards.

From: Development and application of tail brush elastic test device

Tail clearance (mm)

Elastic coefficient (N/mm)

Resilience force (N)

40 mm

≥ 22

≥ 1350

45 mm

≥ 1300

50 mm

≥ 1250

55 mm

≥ 1150

60 mm

≥ 1050