Ball Bearing Optimised For Extreme Applications

Baldor Electric has introduced the Dodge Extreme Duty mounted ball bearing, which offers extended life in automation equipment in extreme industrial power-transmission applications. These applications include aggregates, cement, paper, wood and metal processing. The Dodge Extreme Duty bearings feature a sealing system and a ball retainer for superior protection and reduced maintenance. These bearings, available in a variety of housing styles, use a 65-degree spacing for setscrews.

This design offers an optimum balance between locking force and inner ring stress. The new sealing system, Quadguard, consists of a triple lip seal and a rubberised flinger. The triple lip seal offers three points of contact, keeping the lubricant in and contaminants out. This unique design maximises sealing with a minimal amount of drag. The rubberised flinger is a moulded nitrile rubber component that is bonded to the flinger surface and provides an additional barrier to contaminants.

The rubber baffled design on the external surface of the flinger enhances the removal of liquid as it rotates, while grease chambers on the internal surface of the flinger prevent lubricant from exiting the bearing. A new two-piece ball-retaining cage, Maxlife, creates a grease compartment around each of the rolling elements.

The compartments provide constant contact between ball and grease so an oil film always exists to prevent wear and minimise friction and heat. The compartmental construction holds in the grease and prevents it from being washed out. This exclusive design extends the life of the bearing and requires less frequent re-lubrication than standard designs. For additional protection, the housings are machined with a groove to accept a snap-on polymer end-cover for exposed, rotating shafts.

These covers incorporate a drain hole to prevent moisture build-up. Dodge Extreme Duty ball bearings also utilise the latest synthetic grease technology to provide lower operating temperatures and extend grease life and the interval between re-lubrication operations. The Dodge Extreme Duty is available in a range of imperial sizes and metric sizes from 20 to 85mm.

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa...
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin...
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more