6238 Deep Groove Ball Bearing

The 6238 bearing features a single row of balls and a deep groove raceway in the outer ring, known for its robustness and durability. It has a bore diameter of 190 mm, an outer diameter of 340 mm, and a width of 55 mm. According to the sealing structure, it can be divided into three types: 6238 (Open), 6238 2RS (double-sided rubber seal) and 6238 ZZ (double-sided metal seal), it provides flexible, applicable and efficient solutions for mechanical applications in various fields.
  • 6238; 6238 2RS; 6238 ZZ

  • LNB

  • 190 mm

  • 340 mm

  • 55 mm

  • Steel

  • Ball Bearing

  • Open; Rubber Seals; Steel Shields

  • China

  • OEM; ODM

  • Negotiation

  • 30

Availability:
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Parameters Of 6238 Deep Groove Ball Bearing

Basic Information
Model 6238 6238 2RS 6238 ZZ
Brand LNB LNB LNB
System of Measurement Metric Metric Metric
Bearing Type Open Type Sealed Shielded
Load Direction Radial Radial Radial
Construction Single Row Single Row Single Row
Temperature Range -30° to 110 °C -30° to 110 °C -30° to 110 °C
Weight 23.000 kg 23.000 kg 23.000 kg
Product Dimension
Bore Dia 190 mm 190 mm 190 mm
Bore Dia Tolerance -0.025mm to 0 -0.025mm to 0 -0.025mm to 0
Outer Dia 340 mm 340 mm 340 mm
Outer Dia Tolerance -0.030mm to 0 -0.030mm to 0 -0.030mm to 0
Width 55 mm 55 mm 55 mm
Width Tolerance -0.300mm to 0 -0.300mm to 0 -0.300mm to 0
Material
Ring Material Chrome Steel Chrome Steel Chrome Steel
Ball Material Chrome Steel Chrome Steel Chrome Steel
Cage Material Steel Steel Steel
Basic Load Rating
Dynamic Radial Load 255.0 kN 255.0 kN 255.0 kN
Static Radial Load 280.0 kN 280.0 kN 280.0 kN


Difference between Open bearings, 2RS bearings and ZZ bearings


The bearings can be divided into three types according to the sealing methods: open type,  sealed type (2RS - double rubber seal; RS -single rubber seal), and shielded type (ZZ - double metal shield; Z - single metal shield)

The three types differ mainly in sealing structure, dust resistance, waterproof performance, etc. The following is the detailed variant information for your reference:


1. Open Bearings:

Construction: Open bearings do not carry any seals and their rolling elements as well as raceways are exposed.

Info: This class of bearings offers low friction, designed for high-speed machines and equipment. However, such bearings are easily contaminated with dust and water. And unsealed bearings will need lubrication periodically.

Application Scenarios: Open bearings are typically used in most clean and lubrication environments such as inside machinery.


2. 2RS Bearings:

Construction: 2RS bearings with twin-sided rubber seals. As a result, they can prevent the ingress of dust, moisture, and other contaminants.

Info: Double-side seals make bearings excellent for sealing against dust and water. However, the seals would increase friction and thus lower the speed capabilities of bearings.

Application Scenarios: 2RS bearings are suitable for such as outdoor machinery, agricultural machines, etc. which require good water-tightness or dust-proof performance equipment.


3. ZZ Bearings:

Construction: ZZ bearings on both sides are metal shielding. They can also against dust entering, but ZZ bearings exhibit poorer water resistance compared to 2RS type bearings.

Info: The ZZ bearings are slightly less than 2RS bearings waterproof. But they also have less friction than 2RS bearings. ZZ bearings are appropriate for medium to high-speed applications.

Application Scenarios: ZZ bearings are suitable for middle protection requirements such as motors, fans, etc.


Conclusion:

The exact type of bearing to select will depend on the specifics of the devices and machines, where it is being put into service (environment), how much protection is needed by the environment, and so forth.

Open bearings are a high-quality option for use in clean operating environments together with dry areas that do not generate contaminants and wet. Low friction is needed when it comes to these devices and equipment.

When in high dust and water resistance environments, sealed bearings (2RS bearings) can be a good choice. Their functions make them a great option for applications that need waterproof and dustproof protection.

Shielded bearings (ZZ bearings) seem a suitable compromise between open type and 2RS type. These bearings work well in applications requiring basic dust protection and some speed capabilities.

It is necessary to select the right bearing so that you can optimize your machine, as well as its usefulness in different industries which helps reduce downtime. High-quality bearings can also improve the optimal performance and long life of equipment.

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Why Choose LNB Bearing?


LNB Bearing is a Chinese manufacturer and supplier of a wide range of bearings, which always provide great performance and quality-built bearings, winning lots of trust from worldwide customers. We have decades of experience in manufacturing and selling bearings. We can provide:


1. Quality & Durability Bearings

Through advanced manufacturing processes and high-quality materials, the LNB bearing is designed to be able to meet all the different requirements of customers. Our bearings are stable under extremely high load, speed, and environmental conditions. The LNB bearing features high wear resistance, corrosion resistance, fatigue resistance, etc., which effectively ensures that it can work well after long-term use to reduce equipment and device failure rates as well as maintenance costs.


2. Wide Range Of Products

A comprehensive range of LNB bearings includes ceramic bearings, deep groove ball bearings, thin section bearings, angular contact bearings, cylindrical roller bearings, tapered roller bearings, miniature bearings, spheric rollers bearings, and so on. Our bearing products are in various forms over multiple materials/types/sizes/models to fit a variety of industries and diverse application fields. For the automotive industry, large-scale mechanical equipment or precision instruments and skateboard wheels.etc., LNB bearing there are suitable products for you.


3. Excellent Customer Service

LNB bearing not only offers the best quality products but is also specific in great service to support satisfied experiences for customers. LNB bearings are available in OEM or ODM, keeping constant investment in R&D and technology improvement to offer the ideal product for our customers. At the same time, LNB bearings have been continuously innovated in materials and other sealing technologies such as dustproof and waterproof design to offer more comprehensive solutions for users.


4. Eco-friendly And Sustainable Development

LNB bearings always follow the concept of eco-friendly and sustainable development. Throughout product designing and manufacturing, LNB bearings emphasize energy saving and pollution reduction to minimize the harm caused by its operations on the environment. Meanwhile, LNB bearings also play a significant role in the innovation of recyclable products and reuse systems to support sustainability.


5. Positive Reputation And Brand Partnerships

LNB Bearings Company has always been a leader in the provision of bearings and services to our customers with competitive price levels. We are exporting products around the world now. LNB has full formal channels for many well-known brands of bearings, such as SKF、NSK、FAG 、TIMKEN, etc., so customers can choose suitable bearings in different price brackets to better meet their needs.


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