Metric Flanged

Metric Flanged Miniature Ball Bearing Design Attributes

Types: Radial, Angular Contact, Full Complement, Thrust.

Metric radial miniature flanged bearings can bear extremely high radial loads and small amounts of axial loads. Metric angular contact flanged bearings can bear extremely high radial and axial loads. Metric full ball flanged bearings are characterized by slow ultimate speeds, but they can bear the highest load.

Materials: Chrome Steel, Stainless Steel, Ceramic Hybrid, Plastic

Chrome steel is the most common material for metric flanged ball bearings because it has characteristics of high load capacity and low noise. When there is a need for rust prevention, 440c stainless steel material is usually used.

Such kind of stainless steel material can bear both high load and high speed. Furthermore, it has the function of rust prevention. For higher speed requirements, silicon nitride ceramic balls are used to take the place of traditional steel balls.

Precision:  ABEC-1 to ABEC-9

Factors to be considered when choosing an ABEC grade include radial and axial runout requirements, bore and OD fits, and the audible noise level. AUB Bearing offer these types of grades which show the available selection of bore and OD size tolerances, and the radial runout limits for each. ABEC of Grades 3 is the first choice for routine applications. Typically, race finish and race geometry are superior in ABEC 5 and higher. These grades are generally recommended generally for precision assemblies where low noise, minimal runout, and long life are important considerations for metric miniature flanged bearings.

Sizing: Smaller Than 10mm Bore Dia

Seal Type: Open, Sealed(Rubber Seals), Shielded(Metal Shields)

Open type metric miniature flanged bearings are usually oil lubricated, with low starting torque and flexible rotation.

The standard metric flanged bearing seal consists of nitrile/BUNA-N rubber bonded to a metal washer. The washer is made of SPCC cold rolled steel for chrome steel metric flanged bearings or 304 stainless steel for stainless steel metric flanged bearings. High temperature PTFE seals (up to 250°C) or Viton seals (up to 230°C) are available on some sizes. The inner lip of the seal rubs against the metric flanged  bearing inner ring to provide an effective seal against smaller particles such as dust and moisture while preventing lubricant leakage. Contact seals produce much higher frictional torque levels than shields and reduce the maximum speed of a metric flanged bearing. Below -40°C nitrile rubber and viton will stiffen and provide a less effective seal so PTFE seals or metal shields should be considered for very low temperatures.

Shields are designed to prevent larger particles from entering the metric flanged bearing and also to keep grease inside the bearing. They may be pressed into the metric flanged bearing’s outer ring (non-removable) or retained by a circlip (removable). As the shields make no contact with the inner ring, they do not increase starting or running torque. Shields on stainless steel flanged miniature bearings in metric size are generally made from AISI 304 stainless steel.

Cages: Crown, Ribbon, Rivet

Crown type cages: The stainless steel pressed cage is inner ring guided. It shows excellent performance in low torque, low speed applications.

Ribbon type cages: Consists of two mating steel pressings, the cover side and the finger side. Usually guided by the rolling elements and designed to reduce frictional torque.

Rivet type cages: The RJ type cage is suitable for larger metric flanged bearings with a high load carrying capacity. The two pieces are riveted together and are strong enough to withstand higher levels of vibration and acceleration. The cage is guided by the balls and reduces frictional torque.

Lubrication: Factory Lubrication From a Stock of Several Hundred Lubricants.

As the lubrication expert trusted by grease manufacturers，we know how important it is to find the right grease for your metric flanged bearing application. With over 20 years of experience and knowledge, we are confident that we can match the best lubrication solution for our clients. What’s more, we can also use client-specified oil or grease lubricants.

Noise: Performance Testing For Noise And Friction Torque Specifications Available.

The standard instrument used for metric flanged bearing noise testing is the Anderon Meter (sometimes called Anderometer) made by Sugawara Laboratories. This measures noise with an accelerometer contacting the outer race of the metric flanged bearing while the inner race is rotated at 1800 RPM.

Temperatures:

Normal metric chrome steel flanged bearings can be used at constant temperatures of 120°C or intermittent temperatures of up to 150°C. Above these temperatures, the load capacity of the chrome steel will be reduced. By means of special heat treatment processes and the addition of high temperature grease, we can also customize metric flanged bearings for high temperature resistance.

Internal Clearance:

Internal clearance is the play between outer ring, inner ring and rolling element. Generally, the amount of up and down movement of the outer ring with respect to the fixed inner ring is called the radial internal clearance and its right and left movement the axial internal clearance. Bearing internal clearance in operation is an important factor that has a significant influence on other factors such as noise, vibration, heat and fatigue life.

AUB's Ball Bearing Solutions

AUB consistently supplies high quality miniature precision ball bearings for a wide variety of industrial, scientific and commercial applications. Available in both metric and imperial sizes, our Miniature Ball Bearings are known for their high performance in accommodating rotation with extremely low friction. We have perfected the process of manufacturing our Miniature Ball Bearings so the highest quality standards are always maintained. As a result, our miniature precision bearings have the exact characteristics needed for long-lasting performance. Contact our team today for more details on miniature precision ball bearings or to request a quote.