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
63 Series
Home Deep Groove Ball Bearings 63 Series

6303-2RS Deep Groove Ball Bearing | Premium Double Rubber Seal Protection | 17×47×14 mm

6303-2RS Deep Groove Ball Bearing | Premium Double Rubber Seal Protection | 17×47×14 mm

The 6303-2RS represents a highly versatile, single-row radial bearing crafted for exceptional durability and uncompromising contaminant resistance. Outfitted with twin synthetic rubber seals (2RS) that make physical contact with the inner ring, this model securely locks in the factory-applied lubricant while creating a formidable barrier against water, dirt, and industrial grime. Manufactured to standard metric measurements—featuring a 17 mm bore, 47 mm outer diameter, and 14 mm width—the 6303-2RS is an indispensable component for power transmission systems, high-speed power tools, and automotive auxiliaries where reliability is paramount.

6303-2RS Deep Groove Ball Bearing 17x47x14 mm | NBR Contact Seals | Heavy-Duty Precision

Engineered for "sustained stability and environmental defense," the 2RS sealing mechanism relies on high-grade Nitrile Butadiene Rubber (NBR) molded around a steel sheet insert. This structural layout thoroughly shields the highly finished steel balls and micro-raceways from abrasive airborne particles. It remains the industry standard for outdoor motorized equipment, workshop machinery, and processing plants where minimizing maintenance intervals is highly valued.

6303-2RS Deep Groove Ball Bearing | Premium Double Rubber Seal Protection | 17×47×14 mm

Comprehensive Applications

Due to its robust medium-series dimensions and excellent radial load support, the 6303-2RS is widely integrated into diverse mechanical sectors:

Outdoor & Utility Machinery
  • Lawnmower Spindles and Drive Wheels
  • Portable Generator Engines
  • Small Agricultural Tillers
Power Tools & Workshop Equipment
  • Heavy-Duty Angle Grinders
  • Benchtop Drill Presses
  • Circular Saw Armatures
Electric Motors & Generators
  • Industrial Stator and Rotor Shafts
  • Automotive Alternators and Starters
  • High-Torque Servo Motors

Key Performance Features

01. Advanced Sealing Technology

The dual rubber seals (2RS) provide a tight, interference-fit contact lip against the bearing's inner ring. This design offers vastly superior ingress protection compared to metal shields, making it perfectly suited for environments exposed to splashing liquids, sawdust, or fine metallic shavings.

02. HiWear-Resistant Chrome Steel

Forged from premium-grade GCr15 (AISI 52100) high-carbon chrome steel, all raceways and rolling elements undergo precise heat treatment. This guarantees superior hardness and fatigue resistance, ensuring the bearing maintains structural integrity even under continuous radial stress.

03. Ready-to-Mount & Maintenance-Free

Each 6303-2RS unit is permanently pre-lubricated with a high-performance, oxidation-resistant grease. The secure sealing architecture prevents lubricant leakage, completely eliminating the need for periodic relubrication and drastically reducing long-term operating costs.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 63 Series (Medium Metric Series)
Basic Designation 6303
Suffix 2RS / 2RS1 (Two Rubber Seals)
Bore Diameter (d) 17 mm
Outer Diameter (D) 47 mm
Width (B) 14 mm
Material (Races & Balls) High-Carbon Chrome Steel (GCr15 / AISI 52100)
Precision Class ABEC-1 (ABEC-3 / ABEC-5 Upgrades Available)
Cage Material Standard Pressed Steel Cage
Dynamic Load Rating (Cʳ) 13.5 kN
Static Load Rating (C₀ʳ) 6.55 kN
Limiting Speed (Grease) 12,000 r/min
Limiting Speed (Oil) 15,000 r/min (Base capacity without seals)
Weight (approx.) 0.115 kg

Interchange Part Numbers

Manufactured in strict accordance with ISO dimensional standards, the 6303-2RS is fully interchangeable with the following global brand designations:

  • NSK: 6303 DDU
  • SKF: 6303-2RSH / 6303-2RS1
  • KOYO: 6303 2RS
  • NTN: 6303 LLU
  • EZO: 6303-2RS
  • FAG: 6303-2RSR
  • Timken: 6303-2RS

Design & Configuration

The internal configuration of the 6303-2RS is tailored for rugged longevity. While the contact rubber seals introduce a nominal amount of starting torque compared to open or ZZ variants, this trade-off provides an unmatched defense against harsh external elements. The NBR seals are firmly anchored in the outer ring and feature a flexible lip that wipes against the inner ring's sealing groove, keeping the precision-matched steel balls rolling smoothly in a clean, perfectly greased environment.

It is the definitive upgrade for rotating machinery that must operate flawlessly in dusty, damp, or debris-heavy conditions without the luxury of constant maintenance.

"A resilient, precision-crafted radial bearing designed to deliver steadfast load support and ultimate contaminant protection for versatile industrial applications."

Related Products

Robust 70x150x35 mm 6314 2RS Bearing compatible with SKF 6314-2RS1 and NSK 6314 DDU for Industrial Gearboxes and Agricultural Tractors
6314-2RS Heavy-Duty Deep Groove Ball Bearing | Double Rubber Sealed Protection | 70×150×35 mm

The 6314-2RS is a robust, heavy-series metric deep groove ball bearing built specifically to endure demanding industrial environments and high-load applications. Equipped with heavy-duty dual contact rubber seals (2RS), this model provides superior defense against moisture, dirt, and heavy particulate contamination. Measuring 70 mm in the bore, 150 mm in outer diameter, and 35 mm in width, the 6314-2RS is an indispensable mechanical component for large-scale electric motors, heavy automotive transmissions, and rugged agricultural machinery requiring maintenance-free reliability.

Details
High Load Capacity 50x110x27 mm 6310 2RS Bearing - GCr15 Chrome Steel ABEC-1 Grade for Agricultural Machinery and Automotive Transmissions
6310-2RS Heavy-Duty Deep Groove Ball Bearing | Premium Dual Rubber Seal | 50×110×27 mm Metric Series

The 6310-2RS is a robust, medium-series deep groove ball bearing specifically engineered to accommodate substantial radial and axial loads in demanding industrial environments. Unlike miniature or thin-wall models, this heavy-duty bearing features thick cross-sections and large rolling elements, making it an absolute powerhouse for rigorous applications. Outfitted with dual contact rubber seals (2RS), it forms an impenetrable barrier against harsh contaminants, water ingress, and abrasive dust. With standardized metric dimensions—a 50 mm bore, 110 mm outer diameter, and 27 mm width—the 6310-2RS delivers unyielding structural integrity for heavy machinery, automotive transmissions, and large-scale industrial motors.

Details
6309-2RS Medium Heavy Ball Bearing highlighting Double Rubber Lip Contact Seals for Dustproof Protection and Pre-Packed Lifelong Grease
6309-2RS Medium-Heavy Deep Groove Ball Bearing | Dual-Lip Rubber Seal Protection | 45×100×25 mm

The 6309-2RS is a high-end, mid-sized heavy metric deep groove ball bearing engineered to deliver balanced load capacities and exceptional structural rigidity in harsh working conditions. Fitted with dual-lip synthetic rubber contact seals (2RS), this bearing offers an impermeable barrier against airborne grit, moisture, and fine particulates. Featuring a 45 mm bore, 100 mm outer diameter, and 25 mm width, the 6309-2RS represents the ideal mechanical solution for medium-to-large rotating machinery, industrial pumping systems, and heavy-duty electric power drives requiring long-term, maintenance-free operation.

Details
6308-2RS Deep Groove Ball Bearing displaying dual NBR rubber seals for optimal water and dust resistance
6308-2RS Deep Groove Ball Bearing | Heavy-Duty Double Rubber Sealed Performance | 40×90×23 mm

The 6308-2RS is a robust, single-row deep groove ball bearing engineered to deliver superior load-carrying capacity and extended service life in demanding environments. Equipped with tight-fitting, dual contact rubber seals (2RS), this model provides an impenetrable barrier against moisture, heavy dust, and external contaminants while securely retaining its factory-filled lubrication. Built to exact metric dimensions—a 40 mm bore, 90 mm outer diameter, and 23 mm width—the 6308-2RS is the definitive mechanical solution for medium-to-heavy industrial machinery, automotive hubs, and high-torque electric motors.

Details
6306-2RS Deep Groove Ball Bearing showing Dual Rubber Seals for Moisture Protection and Reliable Grease Retention
6306-2RS Deep Groove Ball Bearing | Heavy-Duty Rubber Sealed Performance | 30×72×19 mm

The 6306-2RS is a robust, high-precision single-row deep groove ball bearing engineered for exceptional endurance in medium-to-heavy mechanical setups. Unlike metal-shielded models, this bearing is equipped with synthetic rubber seals (2RS) on both sides, which are securely bonded to the outer ring to form a reliable contact seal against the inner ring. This design offers superior defense against water splashes, moisture, and fine dust particles while effectively retaining the internal factory grease. Featuring standard metric dimensions—a 30 mm bore, 72 mm outer diameter, and 19 mm width—the 6306-2RS serves as a highly dependable component for electric motors, agricultural equipment, and heavy industrial machinery.

Details
6302-ZZ Deep Groove Ball Bearing showing Dual Pressed Steel Shields for Dust Protection and Low Friction Torque
6302-ZZ Metric Shielded Ball Bearing | High-Velocity Metal Shield Protection | 15×42×13 mm

The 6302-ZZ stands as a highly versatile, dual-metal-shielded single-row radial ball bearing engineered to deliver exceptional performance under elevated operational speeds and steady radial loads. To minimize drag, this model incorporates twin non-contact pressed steel shields (ZZ) that form a precise barrier over the internal mechanics, retaining factory-applied grease and deflecting dust without creating mechanical friction. Featuring standardized metric dimensions—a 15 mm bore, 42 mm outer diameter, and 13 mm width—the 6302-ZZ provides a highly dependable mechanical solution for power tools, electric motors, and automotive sub-assemblies.

Details
Premium 6303 2RS Replacement Bearing compatible with SKF 6303-2RSH and NSK 6303 DDU for electric motors
6303-2RS Deep Groove Ball Bearing | Premium Double Rubber Seal Protection | 17×47×14 mm

The 6303-2RS represents a highly versatile, single-row radial bearing crafted for exceptional durability and uncompromising contaminant resistance. Outfitted with twin synthetic rubber seals (2RS) that make physical contact with the inner ring, this model securely locks in the factory-applied lubricant while creating a formidable barrier against water, dirt, and industrial grime. Manufactured to standard metric measurements—featuring a 17 mm bore, 47 mm outer diameter, and 14 mm width—the 6303-2RS is an indispensable component for power transmission systems, high-speed power tools, and automotive auxiliaries where reliability is paramount.

Details
Welink 6301-2Z Deep Groove Ball Bearing with 12mm x 37mm x 12mm Dimensions featuring Premium High Stability Grease Fill
6301-ZZ Metric Shielded Ball Bearing | Enhanced Rotational Agility Metal Shield Performance | 12×37×12 mm

The 6301-ZZ stands out as a highly reliable, dual-metal-shielded single-row radial ball bearing engineered to deliver smooth rotational agility under high-frequency conditions and steady radial forces. To minimize power loss, this model incorporates twin non-contact pressed steel shields (ZZ) that form a precise gap over the internal elements, successfully locking in factory-applied grease and deflecting micro-particulates without introducing frictional resistance. Featuring standard metric dimensions—a 12 mm bore, 37 mm outer diameter, and 12 mm width—the 6301-ZZ provides a perfect mechanical solution for compact power tools, small electric motors, and modern appliance hardware.

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