Coefficient Of Friction Granite On Steel

Ref links 1 below the american gear manufactures association agma recommends a value of between 0 12 0 15 for hydraulically expanded hubs and 0 15 0 20 for shrink or press fit hubs.

Coefficient of friction granite on steel. F f μ n 1. Steel to steel. The following friction coefficients shall be considered in calculating the sliding friction forces. Concrete to soil rock.

Below are provided a small number of values showing approximate values of friction coefficients to be used for steel screw fastened connections. The value of μ s is generally higher than the value of μ k for a given combination of materials. Glass on glass 0 4 rubber on concrete 0 75 steel on steel 0 55 angle of internal friction rock 30 sand 30 40 gravel 35 silt 34 clay 20 loose sand 30 35 medium sand 40. N normal force between the surfaces n lb there are at least two types of friction forces.

Steel to teflon plate. Limestone on limestone. The coefficient of kinetic friction is generally lower than the coefficient of static friction on the same surface. Brick masonry on rock.

Tribology materials surfaces interfaces. Coefficient of sliding friction for most rocks varies between 0 8 and 0 5. Friction and wear characteristics of steel on rock under water and oil based lubricated sliding conditions. For example static friction can prevent an object from sliding down a sloped surface.

The coefficient of kinetic friction for curling ice. Static friction is friction between two or more solid objects that are not moving relative to each other. The frictional force can be expressed as. The coefficients of friction are independent of the surface area in contact.

Concrete to steel. The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction. The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it. A value of 0 60 would be a good number for general use.

First you tape the low g accelerometer on the end of the surface in this case a slab of granite. Coefficients of friction between materials are best determined through testing. Experimentally obtaining values for the total distance traveled and for the initial velocity of the curling stone with the aid of nih imaging we calculate the coefficient of kinetic friction for curling ice. F f frictional force n lb.

Where μ s is the coefficient of static friction and μ k is the coefficient of kinetic friction. However it is possible to find tables in the literature for friction coefficients between various materials. Coefficient of friction to 0 25 to 0 3.