Radial Clearance: In an unmounted bearing radial clearance is the amount of internal movement that the ball can travel along the axis perpendicular to the ball bore.

Search our entire catalog of bearings and bushings to find the product spec you need for your application. View the online catalog, download the catalog PDF, or request a mailed copy to access every product attribute and technical specification.

Premium Materials - To ensure a smooth surface, free from defects, burrs, and cracks, all bearing housings are manufactured with polyamides for added impact toughness and age resistance.

Durability & Performance - Hub bearings use high-quality rubber to optimize the seal’s performance and durability against high temperatures and weathering.

Spherical Bearing: Consists of a raceway around a ball. To function, is placed in a housing, as it has no threaded portion to affix it to a component. Also sometimes called a mono-ball.

For two decades, we have been an enthusiastic supporter of teams involved in Formula SAE, Mini Baja, Formula Student, and many other similar competitions world wide. We offer an aggressive discount to teams. Address inquiries to customerservice@aurorabearing.com to learn more. Please include the name of your school or institution in your inquiry, and the competition in which you are participating.

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“Flush” fitting: Connection allowing passage of grease into bearing for lubrication. Unlike “zerk” fitting, fitting protrudes a minimal amount from surface, and requires a needle mating fitting to introduce lubricant.

“Zerk” fitting: Connection allowing passage of grease into bearing for lubrication. Sometimes known as a grease nipple, greaser, or zert fitting.

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Ball: The spherical inner portion of the bearing, with a through hole for attachment. Also sometimes referred to as an “inner ring”.

A metal-on-metal screeching at low speeds is usually diagnosed as brake pads that need to be replaced. While this is the reason in many cases, if you know your brakes are new or don’t need to be replaced, you can usually narrow it down to your wheel hub. A wheel hub that has lost its grease and is wearing the bearings with no lubrication will produce a loud metal-on-metal sound at low speeds.

Lubrication: A metal on metal bearing, when regularly misaligned or oscillated in operation, will require lubrication. A lightly loaded bearing may be run with minimal lubrication, relying on a boundary, or very thin, lubricant film. More heavily loaded, or frequently misaligned bearings require a film of lubricant between the ball and race, to prevent galling, or micro welding of the two surfaces. A sign of insufficient lubrication on a used metal on metal bearing is noticeable discoloration of the ball, either to black or brown, on the wear surfaces.Imperial Thread: Also known as “inch thread”. Inch threads are identified by the nominal diameter size followed by the number of threads per inch. “5/16-24” indicates 5/16 inch outside diameter and 24 threads per inch.

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Base to Center: The dimension that specifies the distance from the bottom of the shank to the center of the ball bore. This is the most common measurement in the bearing industry when the length/height of a rod end is expressed.

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Metal on metal bearing: The wear surfaces of both the ball and race on a standard rod end or spherical bearing are a “metal” surface rubbing “on” a “metal” surface. A metal on metal bearing requires some sort of lubrication if regularly misaligned.

The wide range of materials and configurations of Aurora rod end and spherical bearings include many products for marine use. Especially suitable are the many series of stainless steel rod ends and spherical bearings. These offer corrosion production beyond the protective coatings applied to other Aurora products. Aurora stainless steel bearings feature bodies, balls, and races all produced from heat treated materials, offering the ultimate in corrosion resistance, strength, and durability.

On applications from throttle controls to door actuators, transportation industry OEM’s rely on the strength, precision, and durability of Aurora products to deliver long term value to their customers. In addition, Aurora provides custom engineered products for applications such as sway bar linkages on inner city and over the road busses, suspension linkages for high speed rail cars, and bearings for motorcycle suspension systems.

Axial Static Load Capacity: The amount of load a bearing can support in the axial direction, through the ball bore, before permanent damage can occur. See page 4 of the Aurora Bearing Catalog for recommended Axial Static Load Capacities. Operating loads should include a factor of safety, generally 4 to 1, but in any event should not be near the ASLC.

Race: The portion of the bearing that the ball rotates within. It can be machined into the body on a 2-piece rod end or be one solid ring on a 3-piece part. On a spherical bearing, the race is sometimes referred to as an “outer ring”

We have the technology to produce the highest-quality bearings in the world – and we’re constantly searching for new technologies to further advance our solutions.

Aurora has developed key components for dairy machinery, high speed sorters and inserters, baggers and carton erectors. Our range of styles and configurations of bearings service a wide variety of applications with catalog items, while our engineering expertise can help solve the most difficult applications.

Lastly, if your Anti-Lock Brake Light or Traction Control Light illuminates and you are experiencing vibrations in your steering wheel, you most likely have a bad wheel bearing. In most modern cars, a wheel bearing that has gone bad will cause the system to trip. This will cause an ABS speed sensor code to be stored and your dash light to illuminate to indicate that you have an issue.

The Aurora line encompasses over 30 series of rod ends and spherical bearings, the widest selection in the industry. In addition to catalog offerings, non-standard materials substitutions and dimensional modifications are possible to meet specific customer application requirements.

Quality Control - In order to increase longevity and resist abrasion, GSP’s ball bearings are spaced precisely to the appropriate clearance for smooth rotation.

Howto tell whichwheel bearing is badwhile driving

If your wheel bearing has begun to wear down and metal-on-metal contact without enough grease to lubricate it properly, you will experience vibrations in your steering wheel. As the metal bearings start to wear down, there will be more play in the wheel bearing, causing them to vibrate.

Axial Clearance: In an unmounted bearing axial clearance is the amount of internal movement that a ball can travel along the axis of the ball bore.

Aurora provides parts for applications such as: landing gear, horizontal & actuator systems, cargo handling, airframes, engine systems, turnbuckles, APU systems, tail rotors, main rotors and control levers.

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Extensive supplier quality requirements ensure compliance with our quality management system, regulations requirements, internal traceability and more.

GSP offers some of the highest quality wheel hubs in the industry. GSP offers both wheel hub and knuckle hub assemblies.

Magnetic Particle Inspection: A method used to detect cracks, laps, seams, inclusions, and other discontinuities on or near the surface of the bearings.

If you notice an unusual noise coming from your wheel at moderate speeds, a few things could be wrong. Your lugs could not be tight, your brakes may be dragging, or your wheel bearing may be bad. It is often hard to diagnose a noise at moderate speeds, but if you have inspected your brakes and checked your lug nuts, which are both good, you most likely have a bad wheel hub.

Our wide range of product configurations has resulted in Aurora products being a key component in race winning vehicles in all forms of motorsports. Stock car racers, both on dirt and pavement, sprint cars, drag cars, open wheel cars, both on speedways and road courses, endurance road racers, off road racers and rally cars are just a small selection of the styles of automobile racing where Aurora products deliver race winning performance. Beyond automobiles, motorcycles and sidecars, snowmobiles, boats, and aircraft racers win with Aurora. Whatever you race, if it uses rod ends or spherical bearings, you can count on Aurora.

Metric Thread: Metric screw threads are identified by the letter (M) for the thread form profile, followed by the nominal diameter size and the pitch expressed in millimeters, separated by the sign (x) and followed by the tolerance class separated by a dash (-) from the pitch. (ex.: M10 x 1.5-6g)

Staking Groove: Also known as the Grumman groove. A groove that is machined into a bearing or housing and is used to retain the spherical bearing in the housing.

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Aurora’s wide range of products serves a variety of attraction industry requirements. Standard products are used on production rides and attractions, while specialty designed products are used in large scale attractions, motion based simulators, animatronics figures, as well as some of the most elaborate and sophisticated rides.

We services unmanned aircraft, missiles, radars, kit planes, personal planes, commercial planes, personal jets, commercial jets, gyrocopters, helicopters and space exploration vehicles.

Teflon Liner: Teflon is a trademark held by Dupont for their material chemically known as PTFE. A teflon liner is a strip of PTFE/fabric composite bonded to the raceway of the part. It provides a self-lubricating surface for the ball to ride on. It should not be confused with virgin PTFE, which has very low compressive strength. A proper liner relies on the fabric component for load bearing capacity, and the PTFE component for lubricity.

Aurora offers standard and special spherical bearings, rod ends, and bushings for aircraft manufacturers, their subcontractors, and approved aerospace distributors. Total traceability is maintained through manufacturing up to and including shipping.

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Companies like Boeing, Lockheed, NASA, Raytheon and Northrop Grumman which need certified parts come to us for performance, quality, and service they expect. Aurora meets both their rigorous technical requirements and their demanding production schedules to supply parts for unmanned aircraft, missiles, radars, jets, helicopters and space exploration vehicles.

From its beginning in 1971, we quickly grew a reputation for designing and producing high quality commercial rod ends and spherical bearings. Performance, expertise, quality, and service soon made us a leader in the industrial market. These attributes soon attracted leaders in the aircraft/aerospace field to Aurora for bearing application solutions. Today, companies like Boeing, Lockheed, NASA, Raytheon, Northrop Grumman and Airbus rely on Aurora to meet their development and production needs.

A wheel hub, or wheel bearing, is a component that keeps your wheel attached to your vehicle while allowing the wheels to turn freely for safe steering. This is also vital to a vehicle’s anti-lock braking and traction control systems. The wheel hub bolts to the steering knuckle and allows for a brake rotor and wheel to be attached to it via studs and lug nuts. When your wheel hub goes bad, it can cause various issues that affect your steering and acceleration. Today, we will look at 4 signs of a bad wheel hub.

Vulcanization Process - All Hub Assemblies go through a vacuum vulcanization process to enhance the structural integrity of the seal and rubber components.

Radial Static Load Capacity: The amount of load a bearing can support, in tension, or pull, before it breaks. If a part has a RSLC of 5,000 pounds, loading to this value could cause permanent damage. Operating loads should include a factor of safety, generally 4 to 1, but in any event should not be near the RSLC. Noting the capacity is a good comparator when making interchanges or up grading. See page 4 of catalog, or page 2 of “The ABC’S OF SPHERICAL ROD ENDS” for more information regarding loads.

Beyond the diverse line of catalog items offered by Aurora Bearing Company, Aurora produces a multitude of products for specific customers with designs and configurations to meet unique requirements. We specialize in providing practical and sound solutions to rod end and spherical bearing application problems and challenges.