2014年6月24日星期二

Plastic bearing-Angular Contact Bearing


An Angular Contaslide bearingct Bearing is a type of specialty ball bearing used in many manufacturing and industrialPlastic bearing applications。 This relatively small device is designed to support a greater range of forces than a standard bearing, and to work within even the most precisely engineered machines and equipment。 Manufacturers may use steel or other metals to produce an angular contact bearing, though many are turning to ceramic and similar materials due to their higher strength and durability。

To understand how an angular contact bearing functions, it helps to understand the basics of ball bearings。 Standard ball bearings consist of two concentric metal rings, or races, with a series of metal balls placed in between。 When the bearing is placed inside of a machine, the balls help to reduce friction, improve performance and extend the life of all related components。

For a simple example, consider a skateboard wheel。 A ball bearing sits between the board´s axle and the rubber or plastic wheel surface。 As the wheel spins, the balls inside the bearing also spin, which reduces friction between the axle and the inner ring, or raceslide bearing。 This allows the rider to achieve faster speeds and enjoy a smoother ride than he would without ball bearings。

On an angular contact bearing, the races are inconsistently sized so that one edge is thicker than the other。 This causes the balls within the rings to sit at an angle to other components within a machine。 By placing the balls at an angle to an axle or similar structure, engineers can reduce friction and add strength along both the axial and radial forces applied to the bearingPlastic bearing。 This means that the bearing can withstand force applied along the longitudinal axis, in this case, the axle, as well as along the inner and outer radius of the races。

Typically, the smaller the angle between the bearings and the axle, the more radial force the bearing can support。 To support greater axial loads, engineers use an angular contact bearing that creates a deeper angle between the bearings and axis。 Designers or installers must also consider things like speed, movement, temperature, and deflection when choosing an angular contact bearing。

Angular contact bearings can be found in most types of motors and engines, including those found in cars, airplanes, and machinery。 Miniature versions are also used in hand-held power tools and some medical and dental equipment。 Hardware, such as door hinges and locks may also contain some form of angular contact bearing。

sintered metal-Metal & Steel Bollard Post

Companies usuallsintered metaly carry five main categories of metal and pipe bollards in both used and new condition。 Many of these are easy to install yourself, while others require professional installation that most companies will implement on your behalf upon request。

Metal bollards are extremely rugged and will withstand impacts from a variety of material handling devices such as pallet racks, forklifts, and scissor lifts。 They can be used to protect any sensitive storage area, storage materials and racks, and restricted access points including parking and loading docks。

Steel Pipe Safety Bollards - 1 3/4" O。D。Steel Pipe Safety Bollards - 1 3/4" O。D。 Bollards can be used both indoors and outdoors to protect work areas, racking and personnelsintered metal。 Powder coated safety yellow finish。 Steel Safety Bollards

These pipe-shaped bollards can be used both indoors and outdoors to protect work areas, rackingpowder metal and personnel。 Manufactured with welded steel construction, each unit is powder coated with safety yellow finish。 Molded rubber caps are removable on 4" and 5" diameter units to allow for concrete infill。 Steel caps are welded on the 1" diameter units。

Each base plate measures 8" x 8", on the 4。5 and 5。5 units (5" x 5" on the 1" units), and includes four pre-drilled mounting holes。 Companies can supply mounting kits and replacement caps when needed。

Chrome-Plated Steel Bollard Chrome-Plated Steel Bollard Post & Barriers。 Improve the image of your facility while protecting people and equipment with this heavy-duty Chrome Bollard。 Unit is made of Steel Chrome Bollard

Chrome is a highly attractive metal on anything, including a bollard。 Chrome-plated bollards will improve the image of your facility and at the same time protect people and equipmentpowder metal。 Every unit is made of steel and finished with attractive bright chrome plating for a clean fresh look。 A black plastic top cap is removable to fill the pipe with concrete for greater strength and stability。

Spring Loaded Steel Bollards

These metal bollards are designed to serve as a visual and audible warning to personnel。 They feature a unique spring-loaded design will bend and not break like rigid bollards。 This works to prevent damage to the bollard and to any equipment that may hit it。

Spring-loaded metal bollards can also be ordered with optional light/siren。 The light/siren unit includes sensitive switches that will activate a strobe light and warning siren when contacted。 The unit is highly energy efficient and operates with two 9V batteries (not included)。 Installation is simplethe light/siren slides directly into the top of the pipe。