Double Row Deep Groove Ball Bearings

Basic Dimensions			Design
d (mm)	D (mm)	B (mm)
10	30	14	4200 ATN
12	32	14	4201 ATN
12	37	14	4301 ATN
15	35	14	4202 ATN
15	42	17	4302 ATN
17	40	16	4203 ATN
17	47	19	4303 ATN
20	47	18	4204ATN
20	52	21	4304 ATN
25	52	18	4205 ATN
25	62	24	4305 ATN
30	62	20	4206 ATN
30	72	27	4306 ATN
35	72	23	4207 ATN
35	80	31	4307 ATN
40	80	23	4208 ATN
40	90	33	4308 ATN
45	85	23	4209 ATN
45	100	36	4309 ATN
50	90	23	4210 ATN
50	110	40	4310 ATN
55	100	25	4211 ATN
55	120	43	4311 ATN
60	110	28	4212 ATN
60	130	46	4312 ATN
65	120	31	4213 ATN
65	140	48	4313 ATN
70	125	31	4214 ATN
70	150	51	4314 ATN
75	130	31	4215 ATN
75	160	55	4315 ATN
80	140	33	4216 ATN
85	150	36	4217 ATN
90	160	40	4218 ATN
100	180	46	4220 ATN

Double Row Deep Groove Ball Bearing

The Double Row Deep Groove Ball Bearing is a highly versatile and robust bearing solution designed for applications that demand higher load capacities than traditional single row deep groove ball bearings. These bearings are a cornerstone of modern industrial machinery, offering reliable performance, reduced friction, and exceptional durability in various demanding environments.

What is a Double Row Deep Groove Ball Bearing?

A Double Row Deep Groove Ball Bearing fundamentally consists of an inner ring, an outer ring, two rows of steel balls, and two cages. Unlike single row bearings, which have one set of balls and raceways, the double row design incorporates two distinct raceways, allowing for a significantly increased number of rolling elements. This structural difference enables them to handle greater radial and axial loads, making them ideal for heavier duty applications. The raceway grooves are deep and curvilinear, with a radius only slightly larger than that of the balls, ensuring optimal ball conformity and load distribution.

What are the Applications for Double Row Deep Groove Ball Bearings?

The enhanced load-carrying capacity and rigidity of Double Row Deep Groove Ball Bearings make them suitable for a wide array of applications across various industries. Their ability to manage both radial and axial loads in both directions, along with good high-speed capabilities, positions them as a preferred choice in demanding machinery. Common applications include:

• Industrial Gearboxes and Transmissions: Supporting shafts and gears under varying load conditions.
• Pumps and Compressors: Ensuring reliable operation under high radial loads and varying speeds.
• Agricultural Machinery: Handling heavy loads and harsh operating environments.
• Construction Equipment: Providing robust support in heavy-duty machinery.
• Electric Motors and Generators: Where higher load capacity is required compared to single-row bearings.
• Material Handling Equipment: Conveyor systems and other machinery requiring smooth and efficient material movement.
• Mining Machinery: Withstanding large radial and axial loads in mineral processing and powder equipment.
• Automotive Industry: In specific components requiring enhanced durability and load support.
• Special Vehicles: Providing robust bearing solutions in various specialized transport applications.
• Automation Production: Essential components in automated systems where reliability is paramount.

Types of Double Row Deep Groove Ball Bearings

While the core design principle remains consistent, Double Row Deep Groove Ball Bearings are primarily categorized by their specific series and design features. The most common types include:

• Standard Double Row Deep Groove Ball Bearings (e.g., 4200A, 4300A series): These are the foundational types, designed for general industrial use. They often feature polyamide (PA66) cages for good performance at higher temperatures.
• Open Bearings: Bearings without seals or shields, allowing for external lubrication and inspection.
• Sealed/Shielded Bearings: Although less common in standard double row deep groove designs compared to single row, some variants may come with shields (ZZ) or seals (2RS) for protection against contaminants and retention of lubricant. These are often application-specific or custom designs.
• Variants for Specific Conditions: Depending on the manufacturer, special variants might exist for high-temperature environments, specific lubrication requirements, or those designed to offer reduced noise and vibration.

Mechanics of Different Types of Double Row Deep Groove Ball Bearings

The fundamental mechanics of Double Row Deep Groove Ball Bearings revolve around the principle of rolling friction. Here’s a brief introduction to their mechanics:

The bearing consists of two concentric rings (inner and outer) with deep, circular arc raceways. Between these raceways are two sets of precision-ground steel balls, separated and guided by cages. When a radial load is applied, the load is distributed across both rows of balls, and the contact points between the balls and raceways deform slightly, creating an elliptical contact area. This distribution across two rows significantly increases the bearing’s ability to handle heavier loads compared to a single-row design.

What Industries Use Double Row Deep Groove Ball Bearings?

Double Row Deep Groove Ball Bearings are integral to a wide range of industries due to their versatility and robustness. Some key industries include:

• Heavy Industrial Manufacturing: Used in machinery like rolling mills, crushers, and large motors.
• Automotive Industry: In various driveline components, transmissions, and heavy vehicles.
• Agricultural Sector: For equipment such as tractors, harvesters, and irrigation systems.
• Construction Industry: In excavators, bulldozers, and other heavy construction machinery.
• Power Generation: Within turbines, generators, and auxiliary equipment.
• Mining and Quarrying: Essential for robust operation in conveyor systems, crushers, and screening equipment.
• Food and Beverage Processing: In machinery requiring hygienic and reliable operation, often utilizing stainless steel variants.
• Material Handling: Cranes, forklifts, and automated warehousing systems.
• Pulp and Paper: In paper machines and processing equipment.
• Steel Industry: In steel production machinery, which operates under extreme loads and temperatures.

Buy Genuine Double Row Deep Groove Ball Bearing from www.bearings.co.th

At www.bearings.co.th, we are committed to providing only genuine Double Row Deep Groove Ball Bearings from world-renowned manufacturers. As authorized distributors, we guarantee the authenticity and quality of every product, ensuring optimal performance and longevity for your critical applications.

Product Information & Facts:

Our extensive inventory of Deep Groove Ball Bearings, including double row variants, features a wide range of sizes and specifications to meet diverse industrial requirements. You can browse by inside diameter, outside diameter, and width to find the perfect fit for your machinery.

Key Features of our Double Row Deep Groove Ball Bearings:

• Enhanced Load Capacity: Designed to carry significantly higher radial and axial loads compared to single-row bearings.
• Increased Rigidity: Provides greater stiffness for improved operational precision and stability.
• Bidirectional Axial Load Support: Capable of handling axial forces in both directions, making them highly versatile.
• High-Speed Capability: Optimized for high rotational speeds with low friction and noise.
• Durability and Long Service Life: Manufactured from high-quality bearing steel for extended operational life.
• Reduced Maintenance: Simple design and robust construction contribute to lower maintenance requirements.

Brands Famous for Reliable Double Row Deep Groove Ball Bearing

Several global brands are renowned for producing high-quality and reliable Double Row Deep Groove Ball Bearings. These manufacturers are leaders in bearing technology, known for their precision engineering, advanced materials, and rigorous quality control. Some of the most famous brands include:

• Timken
• NSK
• NIS

As authorized distributors, www.bearings.co.th proudly supply genuine Double Row Deep Groove Ball Bearings from these world-leading brands. Our commitment ensures that you receive only authentic products with full manufacturer warranties and technical support.

Specifically, from these websites, we are authorized distributors for:

• Timken
• NSK
• NIS

We focus on providing the most reliable and high-performance Double Row Deep Groove Ball Bearings to meet the rigorous demands of your industrial machinery. Contact us to verify specific brand availability or for expert assistance in selecting the ideal bearing for your application.