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Hollow Roller Bearings

 

Hollow roller bearings are single-row or double-row radial bearings with an inner ring, an outer ring, and hollow or thin-wall rollers. The thin wall in the rollers allow the bearings to be preloaded, as opposed to cylindrical roller bearings with solid rollers. This increases radial stiffness and reduces radial vibration and radial runout. The proper lubrication of hollow roller bearings is critical for their proper operation and bearing life. Hollow roller bearings are used on turbine shafts, as well as in grinding, milling, and workhead spindles where precision and stiffness are required.

Products & Services
Roller Bearings
Roller bearings are used in rotary applications to replace sliding movement with low friction, rolling motion. The principal types of roller bearings are cylindrical, spherical, and tapered.
General Purpose Diodes
General-purpose diodes are electric components that conduct electric current in only one direction, functioning similarly to a one-way valve.
Varactor Diodes
Varactor diodes are p-n junction diodes that are designed to act as a voltage controlled capacitance when operated under reverse bias.
Rectifiers
Rectifier diodes are designed for use in rectification circuits. Rectifiers are used to convert AC to DC.
Tunnel Diodes
Tunnel diodes are heavily doped P-N diodes in which electron tunneling from the conduction band in the N-type material to the valence band in the P-type region produces a region of negative resistance. This negative-resistance region is the most important area of operation. As the voltage is increased, the current decreases. This feature makes tunneling diodes especially useful in oscillators and radio frequency (RF) applications.
Product Announcements
American Microsemiconductor, Inc. - Diodes, Rectifiers, General Purpose Diodes Arrays
Diodes, Rectifiers, Diode Arrays, General Purpose Diodes, High-speed Diodes, Varistors and more from American Microsemiconductor, Inc. With over 17,000,000 electronic components sitting on our... (read more)
American Microsemiconductor, Inc. - Variable Capacitance Diode, Varactor, Varicap
Servicing the Semiconductor industry since 1970 - American Microsemiconductor. Contact us for your specific requirement... A varicap diode, varactor diode,or tuning diode is a type of diode whose PN... (read more)
Comchip Technology Corporation - Forward Current up 50% in Schottky Diodes
Comchip Technology has developed surface mounted Schottky barrier rectifiers with a maximum forward rectified current of 3.0A, utilizing the SOD-123T / Mini SMA package... (read more)
American Microsemiconductor, Inc. - Diode Arrays
Fast switching Diode Arrays American Microsemiconductor diode arrays, featuring 10nS reverse recovery time and a low foward voltage drop of 1.0max volt at 10 mA, make them ideal where ESD and EFT... (read more)
HV Components/CKE - High Temperature, High Voltage Diodes
High Temperature ( to 200º C) High Voltage (7,000V) Diodes. Extreme temperatures require an exceptional high voltage diode. (read more)
HV Components/CKE - 2CL2 Medium Power High Voltage Silicon Diodes
These diodes feature repetitive peak reverse voltage ranging from 8,000 to 20,000 Volts and low reverse leakage current with reverse recovery time as low as 100 nanoseconds. (read more)
American Microsemiconductor, Inc. - Tunnel Diodes from American Microsemiconductor
Tunnel Diodes from American Microsemiconductor Inc. WE have an extensive product line of tunnel/Esaki diodes.These fast switching diodes are ideal as microwave signal generators,detectors, etc. (read more)
American Microsemiconductor, Inc. - Tunnel Diode and Back Diode by AMS
American Microsemiconductor supplies a wide range of tunnel diodes. Tunnel diodes have a negative resistance region that allows for very fast switching speeds, up to 10 GHz. (read more)
Topics of Interest

Besides the PN diodes that we studied in the last experiment there are many more types of diodes.  Each one is used in applications that can take advantage of its behavior and...

A semiconductor diode is a non-linear device whose most outstanding feature is the fact that current is allowed to flow – basically – in one direction only.  The diode is built by...

In electronics, a diode is a component that restricts the direction of movement of charge carriers. Essentially, it allows an electric current to flow in one direction, but blocks it in the opposite...

Diodes Semiconductor diodes can use two basic forms of construction, point-contact or junction. Point-contact diodes are still available and used for small-signal purposes where a low value of...

9.2.3 Diodes, Junctions, and Recombination The simplest semiconductor device is called a diode, a name meaning that it has two electrical terminals. The first electronic diodes were vacuum tubes that...