roller bearings

См. также в других словарях:

• roller — [1] A device for replacing sliding friction with rolling friction. [2] While ball bearings use a series of balls in a cage, roller bearings use a series of small cylinders. [3] A colloquial term for a Rolls Royce. See cam roller double roller… …   Dictionary of automotive terms

• Roller rocker — A roller rocker is a rocker assembly that uses bearings instead of metal sliding on metal.A cam/rocker assembly uses a normal cam, but the rocker has a wheel on the end of it like that of a measuring wheel, which rolls by the use of needle roller …   Wikipedia

• roller freight car — noun : a freight car equipped with roller bearings …   Useful english dictionary

• Roller printing on textiles — Roller printing, also called cylinder printing or machine printing, on fabrics is a textile printing process patented by Thomas Bell of Scotland in 1783 in an attempt to reduce the cost of the earlier copperplate printing. This method was used in …   Wikipedia

• Roller skating — is the traveling on smooth terrain with roller skates. It is a form of recreation as well as a sport, and can also be a form of transportation. Skates generally come in two basic varieties: roller skates and inline skates or blades, though some… …   Wikipedia

• Roller skiing — Roller skis. Roller skiing is a non snow equivalent to cross country skiing. Emulating skis, elongated inline skates, with wheels at the ends, are used on tarmac. The skating/skiing action is very similar to actual cross country skiing on snow.… …   Wikipedia

• roller bearing — Mach. a bearing consisting of cylindrical or tapered rollers running between races in two concentric rings, one of which is mounted on a rotating or oscillating part, as a shaft. [1855 60] * * * One of the two types of rolling, or antifriction,… …   Universalium

• Roller cone bit — A roller cone bit is a drill bit used for drilling through rock, for example when drilling for oil and gas. [cite book | last = Hyne | first = Norman J. | title = Dictionary of Petroleum Exploration, Drilling Production | publisher = PennWell… …   Wikipedia

• roller-skating — Recreation and sport in which the participants use roller skates (shoes with sets of wheels attached) to move about on special rinks or paved surfaces. The invention of roller skates is traditionally credited to the Belgian Joseph Merlin in the… …   Universalium

• roller bearing — noun bearings containing small metal balls • Syn: ↑ball bearing, ↑needle bearing • Hypernyms: ↑bearing …   Useful english dictionary

• Tapered roller bearing — Tapered roller bearings are bearings that can take large axial forces (i.e. they are good thrust bearings) as well as being able to sustain large radial forces. DescriptionThe inner and outer ring raceways are segments of cones and the rollers… …   Wikipedia