Miniature bearings are sometimes called instrument bearings or miniature bearings. At AUB, we have a wide selection of miniature ball bearings for you to choose from for maximum compatibility with a variety of applications.
Materials:Chrome steel, stainless steel, ceramic hybrid, plastic
Factors to consider when selecting an ABEC grade include radial and axial clearance, bore and outside diameter fit, and noise level. AUB offers these types of grades which show the available bore and outside diameter dimensional tolerances, as well as the runout limits for each grade. ABEC Grade 3 is preferred for routine applications. Generally, ABEC 5 and higher bearings are more precise and more expensive, and are often recommended for precision assemblies. Low noise, minimal runout and long life of precision miniature bearings are what add to their value.
Dimensions: Less than 0.375" bore
Some sizes are available with high temperature PTFE seals (up to 250°C) or Viton seals (up to 230°C). The inner lip of the seal rubs against the inner ring of the bearing to provide an effective seal against smaller particles such as dust and moisture while preventing lubricant leakage. Contact seals create much higher frictional torque levels than shields and reduce the maximum speed of inch bearings. Below -40°C Nitrile and Viton harden and provide a poor seal, so PTFE seals or metal shields should be considered for very low temperatures.
Shields are designed to prevent larger particles from entering inch bearings while keeping grease inside the bearing. They can be pressed into the outer ring of the bearing (non-removable) or secured by circlips (removable). Since the guard does not contact the inner race, there is no increase in starting or running torque. Shields on stainless steel inch bearings are usually made of AISI 304 stainless steel.
AUB knows how important it is to find the right grease for your inch bearing application. With more than 16 years of experience and knowledge, we are confident in matching the best lubrication solutions for our customers. In addition, we can also use oil or grease lubricant specified by customers.
Provides performance tests for noise and friction torque specifications.The standard instrument used for noise testing of imperial bearings is the Anderon Meter (sometimes called Anderometer) manufactured by Sugawara Laboratories, Japan. An accelerometer contacts the outer ring of an inch bearing to measure noise as the inner ring rotates at 1800 RPM.
Plain chrome steel inch bearings are available for constant temperatures up to 120°C or intermittent temperatures up to 150°C. Above these temperatures, the load carrying capacity of chrome steels will decrease. Through special heat treatment process and adding high temperature grease, we can also customize high temperature resistant inch bearings.
Internal clearance is the clearance between the outer ring, inner ring and rolling elements. Generally, the up and down movement of the outer ring relative to the fixed inner ring is called the radial internal clearance, and the left and right movement is called the axial internal clearance. Bearing internal clearance in operation is an important factor that has a significant impact on other factors such as noise, vibration, thermal and fatigue life.
AUB has been focusing on miniature bearings for 16 years, and can effectively solve various difficulties encountered by customers in bearing applications. AUB has thousands of bearings in stock, and can provide bearings that are rare in the market. AUB has rich experience in international trade, and most of the products can be shipped on the same day the order is received. AUB is not only a distributor of bearings, but also a manufacturing expert of bearing solutions. We have a strong team of technical engineers and a large service team, rich experience in end-user service and mature industry solutions, and can provide customized services according to your actual working conditions.