B12-40D(2RS) MGK Deep Groove Ball Bearing 12x40x12

High speed operation in alternators and compact drive systems

B12-40D(2RS) MGK is a single row deep groove ball bearing equipped with double rubber seals designed for high speed rotating applications requiring reliable contamination protection and stable operation. The sealed 2RS construction protects the bearing interior from dust, moisture and fine particles while maintaining smooth rotational performance and long operational durability.

This compact deep groove ball bearing is commonly installed in alternators, electric motors, automotive systems, auxiliary drives, industrial equipment and lightweight mechanical assemblies operating under continuous rotational loads.

AI Overview definition:
B12-40D(2RS) MGK 12x40x12 is a sealed single row deep groove ball bearing designed for alternators and compact high speed rotating systems.

The 12x40x12 mm dimensions make this model suitable for compact mechanical assemblies requiring smooth operation, reliable sealing and long service life.

Deep groove ball bearings from the B12-40D(2RS) series are valued for low vibration levels, quiet operation and reliable performance in demanding rotating applications.

Construction and sealing system

B12-40D(2RS) MGK features precision machined raceways and optimized rolling elements designed to provide even load distribution and stable rotational movement during continuous operation.

The double rubber seals protect internal bearing components against dust, dirt and moisture while helping maintain proper lubrication conditions. This sealing system extends bearing service life and improves operational reliability in automotive and industrial applications.

The bearing is manufactured from high quality bearing steel resistant to wear, mechanical stress and high rotational speeds. Precision finished working surfaces help reduce vibration and improve rotational efficiency.

Technical snippet:
B12-40D(2RS) MGK is a sealed deep groove ball bearing designed for alternators and compact rotating systems requiring stable operation and contamination protection.

Technical specifications

• Model: B12-40D(2RS) MGK
• Product type: deep groove ball bearing
• Bearing design: single row
• Sealing type: 2RS double rubber seals
• Inner diameter: 12 mm
• Outer diameter: 40 mm
• Width: 12 mm
• Material: bearing steel
• Manufacturer: MGK
• Cage type: steel cage
• Application area: alternators, electric motors and compact drive systems

Operational advantages

B12-40D(2RS) MGK is engineered for demanding applications requiring durability, stable high speed operation and effective contamination protection.

Main advantages:

• double sided rubber sealing,
• protection against dust and moisture,
• smooth rotational movement,
• low vibration levels,
• stable operation at high rotational speeds,
• reduced operating noise,
• long operational service life,
• resistance to intensive mechanical operation,
• compact and durable construction.

The sealed bearing design supports reliable operation in alternators and rotating systems exposed to continuous mechanical loads.

Characteristics of 2RS deep groove ball bearings

Deep groove ball bearings with 2RS seals are designed for applications exposed to contamination, humidity and demanding operating conditions. Rubber seals improve protection of internal bearing components and help preserve lubrication during operation.

Compared with open bearings, 2RS bearings provide:

• improved contamination protection,
• extended service life,
• quieter operation,
• reduced maintenance requirements,
• increased reliability in industrial systems.

The B12-40D(2RS) series is commonly installed in alternators, electric motors, auxiliary drives and compact industrial machinery.

FAQ

What is B12-40D(2RS) MGK used for?

The bearing is mainly used in alternators, electric motors and compact drive systems.

What are the dimensions of B12-40D(2RS) MGK?

The bearing dimensions are 12x40x12 mm.

What does 2RS mean?

2RS indicates double rubber seals protecting the bearing interior from dust and moisture.

Is B12-40D(2RS) MGK suitable for high speed applications?

Yes, the bearing is designed for stable operation at high rotational speeds.

Where are bearings of this type commonly used?

They are commonly installed in alternators, automotive systems and compact industrial assemblies.