Precision Motion Solutions for Compact Applications
As an expert manufacturer and supplier of Miniature Ball Bearings, we provide high-precision bearing solutions crafted for applications where space room is minimal but efficiency is crucial. Our product range includes metric and inch series bearings produced from premium chrome steel, stainless steel, and ceramic materials to meet diverse industrial requirements.
Designed for smooth rotation, reduced friction, and trusted operation, our small ball bearings are widely made use of in medical devices, robotics, drones, electrical motors, laboratory instruments, precision tools, and automation equipment. Whether you need standard models or customized bearing solutions, we can deliver consistent quality and dependable performance.
Miniature bearings are typically characterized by their compact dimensions, high rotational accuracy, and ability to operate under demanding speed and load conditions. With advanced manufacturing technology and strict quality control procedures, our bearings provide long service life and excellent running stability.
What Are Miniature Ball Bearings?
Miniature Ball Bearings are compact deep groove ball bearings generally featuring bore diameters from 1 mm and outer diameters up to approximately 30 mm. Despite their small size, they are capable of supporting both radial and axial loads while maintaining smooth and precise rotation. These bearings are commonly referred to as micro precision bearings because of their tight tolerances and exceptional running accuracy.
Their compact design makes them ideal for equipment requiring lightweight components, limited installation space, and highly accurate motion control.
MR Series – Smaller Outer Ring Metric Miniature Ball Bearings
Metric miniature bearings with bore diameters ranging from 1.5 mm to 8 mm. The metric MR Series bearings are designed to withstand moderate radial and thrust loads, but only at low torques. It is an ideal bearing for small envelopes requiring high precision. Options include: ABEC classes (1-9), chrome steel and stainless steel construction, and open, metal shields or rubber seals.
600 Series – Larger Outer Ring Metric Miniature Ball Bearings
The 600 series is a Larger Outer Ring Metric Miniature Ball Bearings. The bore range of 3mm to 9mm is available with greater O.D. and width dimensions to allow for heavier duty applications ranging from stepping motors to skateboard wheels. Available with ABEC classes (1-9), chrome steel and stainless steel construction, and open or metal shields or rubber seals.
R Series – Inch Size Miniature Ball Bearings
The R Series is an Inch Size Miniature Ball Bearings. The bore range goes from 0.1250" to 1.2500" while the O.D. goes from 0.3750" to 2.250". This series provides high performance with small envelope dimensions. Available with ABEC classes (1-9), chrome steel and stainless steel construction, and open or metal shields or rubber seals.
MF, F, FR Series – Flanged Miniature Ball Bearings
Flanged ball bearings are available open, shielded or sealed. These metric and inch sized deep groove radial flanged miniature bearings can withstand heavy radial loads and moderate thrust loads in both directions. Flanged miniature ball bearings have an outer ring flange to facilitate location in a housing. Bearings range from ABEC classes 1-9.
RW, FRW Series - Extended Inner Ring Inch Miniature Ball Bearings
Mounted-bearing units are highly versatile and can accommodate nearly any roller or ball-bearing type. Design options include many material options for both housing units and the bearings themselves. Emerson Bearing’s mounted units are available for shafts between ½” and 4-15/16″, as well as metric variations. Housing materials are available in cast iron, stainless steel, thermoplastic, split housing and bearing are also available for heavy duty applications.
BL series – Full complement ball bearings
Full complement ball bearings are ball-fitted bearings, which capitalise on the space usually occupied by the ball retainer, as removing the retainer enables additional balls to be fitted. This increase in ball complement allows for significant increases in bearing capacity in either axial or radial directions, but relatively bearing operates at low speed.
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Key Features of Miniature Ball Bearings
Manufactured to precision grades ranging from ABEC-1 to ABEC-9, these bearings provide excellent rotational accuracy for demanding applications requiring smooth and stable motion.
The small footprint of miniature bearings allows engineers to maximize design flexibility while maintaining reliable performance in confined spaces.
Precision-ground raceways and high-quality rolling elements help reduce friction, minimize energy loss, and improve overall equipment efficiency.
Available in chrome steel, stainless steel, and ceramic materials, our bearings provide long service life and dependable operation in various working environments.
Miniature ball bearings can accommodate both radial and axial loads, making them suitable for motors, measuring instruments, actuators, and precision assemblies.
