thin-shell bearing

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• shell — I. noun Etymology: Middle English, from Old English sciell; akin to Old English scealu shell, Old Norse skel, Lithuanian skelti to split, Greek skallein to hoe Date: before 12th century 1. a. a hard rigid usually largely calcareous covering or… …   New Collegiate Dictionary

• Bearing (mechanical) — A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as… …   Wikipedia

• bearing shell — One of a pair of thin semicircular steel cups lined with an alloy such as coper lead or lead indium, which together enclose a shaft or other rotating member, and are held in a circular housing which can be divided into two halves …   Dictionary of automotive terms

• Mollusc shell — Closed and open shells of a marine bivalve, Petricola pholadiformis. A bivalve shell is composed of two hinged valves which are joined by a ligament …   Wikipedia

• Plastic bearing — A plastic bearing is a bearing made of plastic. They were in use shortly after plastic was invented. At first they were just solid with a hole through the middle and were more of a bushing than a bearing. Then as technology progressed so did the… …   Wikipedia

• Saddle shell — Saddle Sad dle, n. [OE. sadel, AS. sadol; akin to D. zadel, G. sattel, OHG. satal, satul, Icel. s[ o][eth]ull, Dan. & Sw. sadel; cf. Russ. siedlo; all perh. ultimately from the root of E. sit.] 1. A seat for a rider, usually made of leather,… …   The Collaborative International Dictionary of English

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

• cephalopod — /sef euh leuh pod /, n. 1. any mollusk of the class Cephalopoda, having tentacles attached to the head, including the cuttlefish, squid, and octopus. adj. 2. Also, cephalopodic, cephalopodous /sef euh lop euh deuhs/. belonging or pertaining to… …   Universalium

• reptile — reptilelike, adj. reptiloid /rep tl oyd /, adj. /rep til, tuyl/, n. 1. any cold blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the… …   Universalium

• cirripede — ▪ crustacean Introduction       any of the marine crustaceans of the infraclass Cirripedia (subphylum Crustacea). The best known are the barnacles. Adult cirripedes other than barnacles are internal parasites of marine invertebrates such as crabs …   Universalium