3219 A

 

Dimensions

d	95 mm	Bore diameter
D	170 mm	Outside diameter
B	55.6 mm	Width
d1	≈119.9 mm	Shoulder diameter inner ring
D1	≈146 mm	Shoulder diameter outer ring
r1,2	min.2.1 mm	Chamfer dimension inner ring
a	101 mm	Distance pressure point(s)

Abutment dimensions

da	min.107 mm	Abutment diameter shaft
Da	max.158 mm	Abutment diameter housing
ra	max.2 mm	Fillet radius

Calculation data

Basic dynamic load rating	C	159 kN
Basic static load rating	C0	146 kN
Fatigue load limit	Pu	5.4 kN
Reference speed		4 000 r/min
Limiting speed		3 400 r/min
Calculation factor	kr	0.06
Limiting value	e	0.8
Calculation factor	X	0.63
Calculation factor	Y0	0.66
Calculation factor	Y1	0.78
Calculation factor	Y2	1.24

3219 A Double Row Angular Contact Ball Bearing: Precision Engineering for Demanding Applications
The 3219 A double row angular contact ball bearing is engineered to deliver exceptional performance in applications requiring high radial and axial load capacity. Its unique double-row design features a steep contact angle (typically 30° or 40°), enabling it to handle combined loads in both directions simultaneously. Precision-ground raceways and high-quality steel construction ensure low friction, reduced heat generation, and extended service life. The bearing's preloaded configuration minimizes axial play, enhancing rigidity for applications with high rotational accuracy demands. Optional sealing solutions further protect against contaminants, making it ideal for harsh environments.

Advantages for Industrial Efficiency
This bearing excels in scenarios where space optimization and reliability are critical. Its compact double-row design saves space compared to paired single-row bearings while maintaining superior load distribution. Advanced heat treatment processes, such as carburizing or through-hardening, enhance durability under heavy loads and high-speed conditions. The 3219 A's optimized internal geometry reduces vibration and noise, ensuring smooth operation in precision machinery. Additionally, its versatility in mounting orientations (universal or tandem arrangements) simplifies installation, reducing downtime in maintenance-heavy industries like automotive, robotics, and material handling.

Wide-Ranging Applications Across Industries
The 3219 A bearing is widely adopted in sectors requiring robust rotational performance. In industrial machinery, it supports spindles, gearboxes, and pumps operating under variable loads. The automotive sector leverages its durability in wheel hubs, transmissions, and electric vehicle motors. Renewable energy systems, such as wind turbine pitch controls, rely on its ability to withstand axial thrust and shock loads. It also shines in automation equipment, CNC machining centers, and agricultural machinery, where precision and longevity are non-negotiable. With customizable lubrication and sealing options, this bearing adapts to diverse operating conditions, cementing its role as a cornerstone of modern mechanical systems.

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