Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Submit
62 Series
Home Deep Groove Ball Bearings 62 Series

6203 Open Deep Groove Ball Bearing | High Speed Unsealed Bearing | 17×40×12 mm

6203 Open Deep Groove Ball Bearing | High Speed Unsealed Bearing | 17×40×12 mm

The 6203 Open is a versatile, light-series ball bearing designed for applications requiring maximum rotational speed and efficient heat dissipation. Unlike sealed variants, this open-type configuration features no contact seals or shields, allowing for minimal friction torque and the ability to utilize external lubrication systems tailored to specific operating conditions. With a compact 17mm bore, 40mm outer diameter, and 12mm width, it serves as a critical component in electric motors, household appliances, and automotive accessories where the housing provides sufficient environmental protection.

6203 Deep Groove Ball Bearing 17x40x12 mm | Light Duty 62 Series | Open Design (No Seals)

Engineered for performance in clean or protected environments, the 6203 Open utilizes high-carbon GCr15 chrome steel races and balls to ensure durability under continuous operation. The absence of sealing elements means this bearing relies on proper housing integration to keep contaminants out, but it offers superior speed capabilities compared to rubber-sealed counterparts. Pre-lubricated with standard grease for immediate use, it allows for easy re-lubrication during maintenance cycles, extending service life in high-cycle machinery. While it lacks the inherent protection of the 2RS model, its low-friction design makes it the preferred choice for high-RPM drives and precision instruments.

6203 Open Deep Groove Ball Bearing | High Speed Unsealed Bearing | 17×40×12 mm

Comprehensive Applications

The 6203 Open is widely utilized across industries where speed and accessibility outweigh the need for integrated sealing:

Electric Motors & Power Tools
  • Small AC/DC motor armatures
  • Handheld drill and grinder spindles
  • Cooling fan motor shafts
Automotive Components
  • Alternator and generator pulleys
  • Idle pulleys and tensioners
  • Interior blower motor assemblies
Home Appliances & Consumer Electronics
  • Washing machine drum supports (protected housings)
  • Vacuum cleaner motor bearings
  • Exercise equipment flywheels
Industrial Machinery
  • Gearbox shafts within enclosed casings
  • Textile machinery rollers
  • Printing press guide rollers

Key Performance Features

01. Optimized for High-Speed Rotation

The primary advantage of the 6203 Open design is the lack of seal friction. This allows the bearing to achieve higher limiting speeds compared to sealed versions, making it ideal for applications where RPM is a critical factor. The open design also facilitates better heat escape from the rolling elements.

02. Flexible Lubrication Options

Since the bearing cavity is accessible, users are not locked into factory grease fills. This allows maintenance teams to apply specialized lubricants suited for extreme temperatures or specific load conditions, providing greater control over the bearing's operational lifecycle.

03. Compact & Lightweight Design

As part of the 62 series, the 6203 offers a robust load capacity relative to its small footprint. Its lightweight construction (approx. 0.069 kg) reduces overall rotational mass, contributing to energy efficiency in motor-driven systems and reducing inertia during start-stop cycles.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series (Light Duty)
Basic Designation 6203
Suffix Open (No Seals/Shields)
Bore Diameter (d) 17 mm
Outer Diameter (D) 40 mm
Width (B) 12 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard (P0) / P6 or P5 Available Upon Request
Seal Type None (Open)
Dynamic Load Rating (Cʳ) 9.56 kN
Static Load Rating (C₀ʳ) 4.75 kN
Limiting Speed (Grease) 17,000 r/min
Limiting Speed (Oil) 20,000 r/min
Weight (approx.) 0.069 kg

Interchange Part Numbers

Directly compatible with industry-standard 17mm bore open bearings:

  • SKF: 6203
  • NSK: 6203
  • FAG6203
  • NTN: 6203
  • KOYO: 6203
  • Nachi: 6203

Design & Configuration

The 6203 Open is intended for installation within protected housings or clean environments. Standard grease lubrication is effective for temperatures between -30°C and +110°C. For applications exposed to dust or moisture, we recommend upgrading to the 6203-2RS (Rubber Sealed) or 6203-ZZ (Metal Shielded) variants to prevent premature wear. For high-precision requirements, P5 and P6 precision grades are available to reduce vibration and noise levels in sensitive equipment.

"Maximizing speed while minimizing friction, the 6203 Open delivers efficient rotational power for protected mechanical systems."

Related Products

Corrosion Resistant 6206-2RS Bearing - Medium Series 6206 for Outdoor Motors and Conveyor Systems
6206-2RS Sealed Deep Groove Ball Bearing | Weatherproof Metric Bearing | 30×62×16 mm

The 6206-2RS is a robust, medium-series ball bearing specifically designed for mechanical systems operating in demanding or contaminated environments. Outfitted with dual contact rubber seals (2RS), this bearing provides an airtight barrier that prevents the ingress of water, fine dust, and abrasive grit. With its 30mm bore and 62mm outer diameter, the 6206-2RS is the preferred solution for agricultural equipment, outdoor industrial motors, and automotive drivetrain components where maximum protection is non-negotiable.

Details
6206 Open Type Ball Bearing showing Unshielded Chrome Steel Balls and Raceway for Zero-Friction High Speed Oil Lubrication
6206 Open Type Deep Groove Ball Bearing | Unshielded Metric Bearing | 30×62×16 mm

The 6206 is a high-precision open-type ball bearing engineered for advanced mechanical assemblies that utilize oil-bath or oil-mist lubrication systems. By removing integrated seals and shields, this unshielded configuration achieves the absolute minimum rotational resistance and zero contact friction. With its standard 30mm bore and 62mm outer diameter, the 6206 Open Type is a critical component for high-speed gearboxes, internal combustion engine components, and specialized industrial spindles where thermal efficiency is a priority.

Details
Precision 25x52x15mm 6205-ZZ Shielded Bearing compatible with SKF 6205-2Z and NSK 6205ZZ for Electric Motors and Domestic Appliances
6206-ZZ Shielded Deep Groove Ball Bearing | Precision Metric Powerhouse | 25×52×15 mm

The 6205-ZZ is a high-performance, mid-series ball bearing engineered to deliver an exceptional balance of radial load capacity and high-velocity efficiency. Featuring dual non-contact metal shields (ZZ), this bearing ensures consistent internal lubrication and provides a mechanical barrier against dust without increasing rotational torque. With a 25mm bore and 52mm outer diameter, the 6205-ZZ is the industry standard for small-to-medium electric motors, industrial blowers, and domestic appliance drive systems.

Details
6205-2RS Deep Groove Ball Bearing showing Double Rubber Contact Seals for Water and Dust Resistance
6205-2RS Sealed Deep Groove Ball Bearing | Rugged Metric Bearing | 25×52×15 mm

The 6205-2RS is a robust single-row ball bearing engineered to deliver balanced performance in demanding environments where radial space is moderate and protection is paramount. Equipped with dual contact rubber seals (2RS), this component effectively blocks entry of dust, moisture, and particulate matter while securely retaining internal grease. Featuring a 25mm bore, a 52mm outer diameter, and a 15mm width, it serves as a critical durable component for industrial pumps, agricultural machinery, household appliances, and automotive auxiliary systems.

Details
Precision 20x47x14mm 6204-ZZ Replacement Bearing compatible with SKF 6204-2Z and NSK 6204ZZ for Electric Motors
6204-ZZ Shielded Deep Groove Ball Bearing | High-Speed Metric Bearing | 20×47×14 mm

The 6204-ZZ is a high-precision, mid-series ball bearing engineered to deliver a superior balance of radial load capacity and high-velocity stability. Equipped with dual non-contact metal shields (ZZ), this model excels at retaining internal grease and deflecting dry contaminants without increasing rotational torque. Featuring a 20mm bore and a 47mm outer diameter, the 6204-ZZ is the industry standard for high-performance electric motor rotors, power tool assemblies, and commercial office equipment requiring a maintenance-free rotational solution.

Details
6203-2RS Ball Bearing displaying Dual NBR Rubber Seals for Maximum Water and Dust Resistance
6203-2RS Double Sealed Deep Groove Ball Bearing | Moisture-Resistant | 17×40×12 mm

The 6203-2RS is a highly versatile, medium-duty rotational component engineered for mechanical systems exposed to moderate contamination. Equipped with twin synthetic rubber seals (2RS), this bearing establishes a tight, protective boundary that aggressively blocks out moisture, ambient dust, and operational debris. Featuring a standard 17mm bore alongside a 40mm outer diameter, the 6203-2RS is the optimal selection for fractional horsepower motors, automotive alternators, and household appliances where sustained, maintenance-free performance is required.

Details
17x40x12 mm 6203 Open Deep Groove Ball Bearing - GCr15 Steel Unsealed Design for High Speed Electric Motors and Automotive Alternators
6203 Open Deep Groove Ball Bearing | High Speed Unsealed Bearing | 17×40×12 mm

The 6203 Open is a versatile, light-series ball bearing designed for applications requiring maximum rotational speed and efficient heat dissipation. Unlike sealed variants, this open-type configuration features no contact seals or shields, allowing for minimal friction torque and the ability to utilize external lubrication systems tailored to specific operating conditions. With a compact 17mm bore, 40mm outer diameter, and 12mm width, it serves as a critical component in electric motors, household appliances, and automotive accessories where the housing provides sufficient environmental protection.

Details
6202 Open Ball Bearing 15x35x11mm - High Speed GCr15 Chrome Steel P0 Precision for Electric Motors and Pumps
6202 Open Precision Deep Groove Ball Bearing | High-Speed Bearing | 15×35×11 mm

The 6202 Open is a versatile, high-performance ball bearing engineered for applications demanding minimal rotational resistance and extreme operational speeds. With a compact 15mm bore, 35mm outer diameter, and 11mm width, it is the preferred choice for electric motors, precision pumps, and light industrial equipment where external contamination control is managed by the housing assembly. As an open-type configuration, without integral seals or shields, this bearing relies on its clean, unobstructed internal geometry to deliver exceptionally low friction torque. 

Details

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Submit

Home

Products

whatsApp

contact