Thrust Bearings

Single Direction Thrust Bearings

Single Direction Thrust Bearings Hartford Technologies'
Single Direction Thrust Ball
Bearings are designed for use
where axial loads are applied from
one direction. Standard ball material
is 52100 chrome steel. Raceways
are hardened steel.

Standard Size Range
- Inner diameter: 10mm to 75mm
- Other sizes available on request

Minimum Order
- Up through 25mm 1,000 pieces
- Over 25mm 500 pieces

Specifications

Applications: Single Direction Thrust Bearings
- Boring mill tables, machine tool spindles, lathes
- Automotive A/C compressors, also steering columns, clutches
- Agricultural equipment

Double Direction Thrust Bearings

Hartford Technologies' Double Direction Thrust Bearings should be
used when the axial load is exerted from two directions. Standard ball
material is 52100 chrome steel. Raceways are hardened steel.

Standard Size Range
- Inner diameter: 10mm to 60mm
- Other sizes available on request

Minimum Order
- Up through 25mm 1,000 pieces
- Over 25mm 500 pieces

Specifications

Applications: Double Direction Thrust Bearings
- Boring mill table
- Automotive A/C compressor
- Agricultural equipment

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APPLICATION PROFILE:
Roller Thrust Bearing Assembly

Roller thrust bearing assembly

Hartford was approached by a large automotive seat mechanism
manufacturer to solve a critical design issue. The problem was in the
drive gear assembly for the seat adjuster. Excessive friction from the
motor to the screw drive mechanism (which adjusts the seat) resulted
in heat build-up that caused the plastic housing to melt. The result
was failure of the seat unit.

The manufacturer consulted with Hartford material and manufacturing
specialists to see what solutions could be identified. Standard thrust
bearings were considered, but no standard size would fit within the
housing, so a custom bearing was developed. A related issue regarded
the fact that thrust bearings consist of three parts: two washers and a
retainer of balls or rollers.

During assembly, the operator had to carefully position washer-retainer-
washer in order for the retainer to perform properly. If they placed
washer-washer-retainer, a major failure of the unit was inevitable.
To streamline the assembly process and eliminate potential scrap issues,
a specially designed, cage-style thrust bearing was developed by Hartford R&D.

This custom caged thrust bearing encapsulates the two washers within
the cage that holds the retainer, and keeps them in place during assembly.
This allows the operator to rapidly insert the bearing into the assembly
without concern over the direction of insertion, or proper orientation.

This solution also allows the cage to sit below the face of the washers,
so that loading can extend beyond the edges of the washers. This creates
a larger, more convenient loading surface area that is not constrained by
the diameter of the thrust bearing.

This custom solution was distinctive in several ways. Unlike conventional
encapsulated thrust bearings, the Hartford retainer held the assembly
together and did not interfere with the bearing surface. The cage-style
assembly allowed for increased productivity and reduction in scrap rates.
The design allowed the customer to solve a issue without the expense
of retooling the other components.

This solution produced a substantial design advantage which helped
solve a problem without expensive retooling or changes to the
existing assembly process.

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Email us for quick, expert applications assistance
with your next thrust bearings requirement.

Hartford Technologies is a leading American manufacturer of custom single direction and double direction thrust bearings
and bearing assemblies, precision rollers, pins, and shafts with manufacturing facilities in the U.S. and China. We provide
comprehensive value-added services, including application engineering and inventory management, to a customer base
that spans automotive to medical, leisure products to agriculture.

Hartford customers include leading OEMs, and diverse, specialized manufacturers on four continents. Our commitment
is to combine technical innovation with agility, responsiveness and institutional strength - strength that comes from a
conservative management team, global manufacturing and logistics capability, and more than 80 years of leadership.

Thrust Bearings

Single Direction Thrust Bearings

Double Direction Thrust Bearings

APPLICATION PROFILE: Roller Thrust Bearing Assembly

APPLICATION PROFILE:
Roller Thrust Bearing Assembly