Newton Conveyors, Inc. Online Catalog

Thrust Bearings

An operating screw conveyor creates an inherent thrust load opposite the direction of material flow.  This thrust load, if not transmitted to the appropriate stationary components, can result in severe damage to hanger bearings.  Therefore, one end bearing should always be of a design that will prohibit thrust induced axial movement of the conveyor screw.

To prevent possible deflection of the screw, the thrust bearing unit, whenever possible, should be located so that the screw is held in tension rather than compression.  When located at the discharge end the thrust bearing holds the screw in tension. At the intake end the bearing maintains the screw in compression.

Type H Heavy Duty Roller Bearing Thrust Units are designed for the heaviest thrust loads.  Although this unit is capable of transmitting thrust in either direction, it is recommended that it be located at the discharge end so that the screw will be held in tension.  The heavy duty roller bearings are mounted on precision machined steel shafts with shoulders and contained in a machined gray iron housing thus providing the highest thrust and radial load capacities.  Lip type mechanical shaft seals are provided at both ends of housing.  The unit is available only with integral shafts, either drive or end.

Type H Thrust Bearing
Type M Thrust Bearing

Type M End Thrust Bearings are designed for medium thrust and radial loads and are efficient, economical and the most widely used of all end thrust bearings.  Although thrust loading capacity is bi-directional, the unit should always be used at the discharge end to keep the screw in tension.  Dual roller bearings are housed in precision machined gray iron housings.  The shaft is retained to the bearing inner race by means of exterior spring steel snap rings.  The bearing housing includes lip type seals for protection of bearings.  A plate type assembly is provided to prevent material loss or inverted to prevent contamination of material.

Collar and Washer Thrust Assembly is intended for use with babbitt or bronze end bearings in applications with only nominal thrust loads.  This thrust unit is designed for use only at the discharge end, since thrust capacity is uni-directional. Available with end shaft specially grooved to receive a split steel collar which transfers the load through a bronze thrust washer to the machined end of the flange bearing.
Collar & Washer Thurst Bearing
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Bronze Washer Thrust Bearing

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Bronze Washer Bearings are designed for light thrust loads.  The assembly consist of two steel washers separated by a close tolerance bronze thrust washer.  This unit is designed only for use at the inlet end and, being uni-directional, can be used only to transmit the compressive thrust load to the conveyor housing end. This type, designed for interior mounting, is exposed continuously to the conveyed material and should only be used when the use of one of the other types is precluded.

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Mail To:                Newton Conveyors, Inc. P. O. Box 816     Cleburne, Tx 76033

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