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Miniature Angular Contact Ball Bearings
Super precision angular contact ball bearings are engineered for high-speed, high-accuracy applications such as machine tools, aerospace systems, and robotics.
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Total 46 Results
Part Number
Bore Dia
Outer Dia
Width
Contact Angle
Ball Material
Cage Material
Weight
Dynamic Radial Load
Static Radial Load
Grease Limited speed (r/min)
Oil Limited speed (r/min)
723AC
3 mm
10 mm
4 mm
25°
Steel,Ceramic
Nylon,Phenolic
723C
3 mm
10 mm
4 mm
15°
Steel,Ceramic
Nylon,Phenolic
146.12 lbf
53.95 lbf
95000
100000
719/4AC
4 mm
11 mm
4 mm
25°
Steel,Ceramic
Nylon,Phenolic
0.0018 kg
719/4C
4 mm
11 mm
4 mm
15°
Steel,Ceramic
Nylon,Phenolic
0.0018 kg
181.86 lbf
65.19 lbf
93000
98000
724AC
4 mm
13 mm
5 mm
25°
Steel,Ceramic
Nylon,Phenolic
0.0032 kg
724C
4 mm
13 mm
5 mm
15°
Steel,Ceramic
Nylon,Phenolic
0.0032 kg
298.98 lbf
114.64 lbf
88000
93000
718/5AC
5 mm
11 mm
5 mm
25°
Steel,Ceramic
Nylon,Phenolic
718/5C
5 mm
11 mm
5 mm
15°
Steel,Ceramic
Nylon,Phenolic
719/5AC
5 mm
13 mm
5 mm
25°
Steel,Ceramic
Nylon,Phenolic
0.0024 kg
719/5C
5 mm
13 mm
5 mm
15°
Steel,Ceramic
Nylon,Phenolic
0.0024 kg
245.03 lbf
98.91 lbf
85000
90000
705AC
5 mm
14 mm
5 mm
25°
Steel,Ceramic
Nylon,Phenolic
0.0035 kg
705C
5 mm
14 mm
5 mm
15°
Steel,Ceramic
Nylon,Phenolic
0.0035 kg
348.44 lbf
116.9 lbf
83000
88000
725AC
5 mm
16 mm
5 mm
25°
Steel,Ceramic
Nylon,Phenolic
0.0048 kg
725C
5 mm
16 mm
5 mm
15°
Steel,Ceramic
Nylon,Phenolic
0.0048 kg
397.9 lbf
155.11 lbf
8000
85000
Combined Load Capacity in Tiny Sizes
Miniature angular contact ball bearings are specifically designed to handle both radial and single-direction axial (thrust) loads simultaneously, even within extremely small bearing dimensions.
This dual capability makes them perfect for compact applications where space is critical, but load conditions are complex, such as in small medical devices or precision robotics.
Choose these when you need more than just radial support in a micro bearing footprint.
Suitable for High-Speed Miniature Applications
Despite their small size, miniature angular contact ball bearings can often operate at relatively high speeds.
Their precise construction and quality materials allow for smooth operation at higher RPMs, compared to other bearing types of similar dimensions, making them suitable for components like small high-speed motors, dental handpieces, or micro-spindles.
Space-Saving Micro Bearing Design
The “miniature” aspect means these bearings have very small bore sizes, outer diameters, and widths, often falling into the micro bearing category.
This allows designers to significantly reduce the size and weight of their assemblies. If you are working within extremely tight space constraints and need reliable combined load support, these miniature angular contact ball bearings are the ideal solution for achieving miniaturisation goals.
FREQUENTLY ASKED QUESTIONS
Why do I need to use these miniature angular contact bearings in pairs?
A single bearing only supports axial load in one direction. Using a pair allows support for bidirectional axial loads and proper preloading, crucial for rigidity and preventing ball skidding in angular contact bearings.
Are chrome steel options available for these small bearings?
Yes, many miniature angular contact ball bearings are offered in chrome steel. Due to its excellent hardness, wear resistance, contact fatigue strength and cost balance, it is widely used in various mechanical systems.
Check product detail pages for material options.
When should I choose these over miniature deep groove bearings?
Choose miniature angular contact bearings when you have significant axial loads alongside radial loads, require higher system rigidity, or need better running accuracy than standard miniature deep groove bearings can offer.
Do you offer samples? What is the Minimum Order Quantity (MOQ)?
Sample availability and Minimum Order Quantity (MOQ) can vary by product model. Please check the specific product page or contact our sales team for details on the bearing you need.