is a device to permit
fixed direction motion between two parts, typically rotation or linear
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is a mechanical
translates rotational motion to linear motion with little
. A threaded shaft provides a
helical raceway for
which act as a precision screw. As well as being able to apply or
withstand high thrust loads, they can do so with minimum internal
friction. They are made to close tolerances and are therefore suitable
for use in situations in which high precision is necessary. The ball
assembly acts as the nut while the threaded shaft is the screw.
Ball Transfer Units (aka BTU's)
are omnidirectional load-bearing
mounted inside a restraining
fixture. They are
identical in principle to a computer
(pointing device). Typically the design involves a
single large ball supported by smaller ball bearings. They are
commonly used in an inverted ball up position where objects are quickly
moved across an array of units, known as a ball transfer table, a type of
conveyor system. This
permits manual transfer to and from machines and between different sections
A Cam Follower is a specialized type of roller or needle bearing designed to follow cam lobe profiles. Cam Followers come in a vast array of different configurations, however the most defining characteristic is how the cam follower mounts to its mating part, a stud style cam follower uses a stud an converts radial movement into linear motion.
Center Flange Bearings are available in 2 bolt and 3 bolt round configurations. They are ideal for tight spaces. They can handle moderate loads up to 700 RPM. They are intended for applications where this is little or no shaft misalignment.
Cylindrical Roller Bearings use cylinders as rolling elements instead of ball bearings. That is the main difference. By doing this they have a much higher radial load as compared to a ball bearing. They come in various configurations but the Single Row Cylindrical Roller Bearing is the most common. The other styles are double row, and multi-row cylindrical bearings. As expected by adding more rows, you increase the axial load.
Deep-groove bearings support higher loads than a shallower groove. Like
angular contact bearings, deep-groove bearings support both radial and
axial loads, but without a choice of contact angle to allow choice of
relative proportion of these load capacities. These bearings
are the most commonly used bearings in the industry available in various
designs and variations.
Flanged Radial Bearings range in ID size from .375 in to 1.25 in and OD from 1.125 in to 2.5 in. There is an integral Flange on the Bearing OD. The Flange axially located the bearing in the housing eliminating the need for housing shoulders or snap rings.
Assemblies provide a substantial cost and weight savings over a
traditional cast iron unit. These assemblies consist of a pressed metal
housing and either a Lutco semi-precision bearing or a precision bearing can
be requested. Because the housing are less rigid than
cast iron housings, they are also less susceptible to fracture.
Linear bearings are rolling-elements consisting
of balls or rollers that reduce friction in motion systems where the motion
acts along a straight — or sometimes curved — pathway. They are
from radial bearings in which motion is rotary. Linear bearings are used in
machine tool applications such as sliding doors, 3D printers, and automation
settings reducing friction and guiding linear motion is needed. They can be
loosely grouped as ball and roller types that use the rolling motion of
elements and sliding types that rely on lubricant and low-friction surfaces.
They can support large loads and move
precisely from low speeds to very fast speeds.
Needle Roller Bearings use long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter. Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.
Needle bearings are heavily used in automobile components
A pillow block bearing consists of a mounting bracket (pillow block) that
houses a bearing and is used in low-torque, light load applications.
the pillow block is bolted to a foundation, securing it, while the shaft and the
inner ring of the bearing are free to rotate. Usually made of gray cast iron,
pillow blocks come in two types, split or unsplit. Typical
applications include but are not limited to:
Belt drives connecting motors and pumps, Long shafts connecting motors and
industrial gearboxes, Conveyor belt roller, Rolling mills, Ventilation
systems, and Paper machines.
Stamped pillow blocks consist of a two piece separable stamped steel housing with spherical bearing seat. This allows the spherical OD bearing initial self-alignment in all directions.These units are an economical alternative to heavier cast iron units. They are generally used for light duty applications.
A rod end bearing is a mechanical joint that features a rounded ball-like swiveling tip. A rod end bearing can be classified as either male or female depending on the way in which the threading is designed. Male rod end bearings are designed with external threading. In comparison, female rod end bearings are designed with internal threading. With interior threading, female rod end bearings can handle unique applications that aren’t possible with male rod ends bearings. They are typically made out of Steel, Stainless Steel, High Carbon Steel, and Aluminum.
There are two row designs: single-row bearings and double-row bearings. Most ball bearings are a single-row design, which means there is one row of bearing balls. This design works with radial and thrust loads.
design has two rows of bearing balls. Advantages of double-row bearings as
compared to single-row include that they can bear radial and axial loads in
both directions. Double-row angular contact ball bearings have a steep
mounting, which also can bear tilting effects. Other advantages of
double-row bearings are their rigidity and compactness. Their disadvantage
is they need better alignment than single-row bearings.
- Roller bearings typically have higher radial load capacity than ball
bearings, but a lower capacity and higher friction under axial loads. If the
inner and outer races are misaligned, the bearing capacity often drops
quickly compared to either a ball bearing or a spherical roller bearing.
- Double Row or Two Row cylindrical roller bearings are designed for heavy
loads that can’t be serviced with a
bearing. The additional row of rollers allows for the increased radial
rotational rolling-element bearing or plain bearing that typically
heavy but slow-turning or slow-oscillating load, often a horizontal
such as a conventional crane, a swing yarder, or the wind-facing
platform of a
horizontal-axis windmill. Compared to other rolling-element bearings,
ring bearings are thin in section and are often made in diameters of a
more. Slewing bearings are often made with gear teeth integral with the
or outer race, used to drive the platform relative to the base. As a
professional slewing rings supplier, we provide small and large swing
with high performance.
The slewing drive is a
gearbox that can safely hold radial and axial loads, as well as transmit a
torque for rotating. The rotation can be in a single axis, or in multiple
together. Slewing ring drives are made by manufacturing gearing, bearings,
seals, housing, motor and other auxiliary components and assembling them
finished gearbox. The slewing drive uses precision kinematics to provide a
large proportion of single-stage gearing.
Just some examples of special materials we can manufacturer your bearings out of based on need.
A spherical plain bearing is a bearing that permits angular rotation about a central point in two orthogonal directions. Typically, these bearings support a rotating shaft in the bore of the inner ring that must move not only rotationally, but also at an angle .
Spherical bearings are used
in countless applications, wherever rotational motion must be allowed to
the alignment of its rotation axis. Spherical bearings are used in
car suspensions, engines, driveshafts,
heavy machinery, sewing machines, robotics and many other applications.
spherical roller bearing
permits rotation with low friction and permits angular
misalignment. Typically, these bearings support a rotating shaft in the bore
the inner ring that may be misaligned in respect to the outer ring. The
misalignment is possible due to the spherical internal shape of the outer
and spherical rollers.
Spherical roller bearings are not truly spherical
in shape. The rolling elements of spherical roller bearings are mainly
cylindrical in shape but have a (barrel like) profile that makes them appear
like cylinders that have been slightly over-inflated
Spherical bearings are used in countless
industrial applications, where there are heavy loads, moderate speeds and
Tapered roller bearings are bearings that can take both axial loads (sideways or thrust forces), as well as radial loads (downward force). The conical geometry in the bearing uses line contact, which permits greater loads to be carried than with a point contact (ball) bearing. The rollers are guided by a flange on the back of the inner ring. This stops the rollers from sliding out at high speed due to their momentum. The larger the half angles of these cones, the greater the axial load the bearing can sustain.
Thrust bearings consist of a full
complement of precision steel bearing component that is either a ball
or cylindrical bearings, Tapered Roller Bearings, or Spherical Roller
located between a pair of cold formed races. The entire assembly is captured
a soft steel band providing a fully unitized assembly. The band acts as a
shield to help retain the lubricant and keep contaminants out.
Other features of Banded Thrust bearings include:
- Case carburized raceways for high wear resistance
- Various band materials available
- Grease packed
- Various plating’s available for protection against corrosion
- Upper raceway is free to rotate and has close fit with shafts
- Lower raceway is fixed and has shaft clearance in the bore
- Max Speed 1000 RPM
Unground radial ball bearings are designed for applications where speeds and
loads are moderate and where noise level requirements and running accuracy
do not justify using more expensive precision ground bearings. Radial
bearings can be customized to include many features that can satisfy demands
of special applications.
Wood bearings are made from lubricant-filled maple wood to make it
self-lubricating. Wood bearings absorb debris and are ideal for corrosive
and abrasive applications where grit, fine contaminants and moisture are
present. These permanently lubricated wood bearings are used extensively in
augers and other agriculture and industrial equipment. Lutco offers
spherical and cylindrical OD options as well as two piece split designs.
are typically used in applications with heavier overall loads, where
standard conditions exceed the capabilities of stud type cam followers. They
do require clevis or shaft-mounted installation, which provides support on
both sides of the cam follower and permits use of a high-strength pin.