Farm field equipment means tractors or implements, including self-propelled implements, or any combination thereof used in agricultural operations.
Farmstead equipment means agricultural equipment normally used in a stationary manner. This includes, but is not limited to, materials handling equipment and accessories for such equipment whether or not the equipment is an integral part of a building.
Ground driven components are components which are powered by the turning motion of a wheel as the equipment travels over the ground.
A guard or shield is a barrier designed to protect against employee contact with a hazard created by a moving machinery part.
Power take-off shafts are the shafts and knuckles between the tractor, or other power source, and the first gear set, pulley, sprocket, or other components on power take-off shaft driven equipment.
Table D-1-Examples of Minimum Requirements for Guard Panel Materials
Material | Clearance from moving part at all points (in inches) | Largest mesh or opening allowable (in inches) | Minimum gage (U.S. standard) or thickness |
Woven wire | Under 2 | 3/8 | 16 |
2 to 4 | 1/2 | 16 | |
4 to 15 | 2 | 12 | |
Expanded metal | Under 4 4 to 15 | 1/2 2 | 18 13 |
Perforated metal | Under 4 4 to 15 | 1/2 2 | 20 14 |
Sheet metal | Under 4 | 22 | |
4 to 15 | 22 | ||
Plastic | Under 4 | (1) | |
4 to 15 | (1) |
1 Tensile strength of 10,000 lb/in2
29 C.F.R. §1928.57