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trb-rc-6702-2rs-ball-bearings-20

4 min read

Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

TRB RC 6702-2RS Precision Ball Bearings - 20+ Pieces

Details

  • Location: Cabinet-5, Bin 48
  • Category: Mechanical Components
  • Brand: TRB RC
  • Model: TRB RC 6702-2RS Precision Ball Bearings 15x21x4mm
  • Part Number: 6702-2RS
  • Package: Individual bearings
  • Quantity: 20+ pieces
  • Status: Available
  • Price Range: $20-35
  • Product URL: https://a.co/d/4NmninD

Description

These TRB RC 6702-2RS precision ball bearings feature the standard 15x21x4mm dimensions with rubber seals on both sides for protection against dirt and debris. Manufactured from chrome steel 52100 (GCr15) with ABEC 3 precision rating, these bearings are specifically designed for RC applications requiring high-speed, smooth rotation. The 2RS designation indicates dual rubber seals that keep contaminants out while maintaining lubrication, making them ideal for demanding RC vehicle applications.

Specifications

Standard 6702 Dimensions

  • Inner Diameter (Bore): 15mm
  • Outer Diameter: 21mm
  • Width (Thickness): 4mm
  • Bearing Type: Deep groove ball bearing
  • Standard Designation: 6702-2RS (ISO/ABMA standard)

Construction Details

  • Material: Chrome steel 52100 (GCr15) for balls and races
  • Precision Rating: ABEC 3 (standard for RC applications)
  • Sealing: 2RS - Rubber seals on both sides
  • Seal Color: Typically blue for ABEC 3 steel bearings
  • Lubrication: Pre-lubricated with appropriate grease
  • Cage Material: Steel or polymer cage for ball retention

Key Features

  • High-speed capability for RC applications
  • Dual rubber seals for contamination protection
  • Chrome steel construction for durability
  • ABEC 3 precision for smooth operation
  • Pre-lubricated for immediate use
  • Compact 4mm width for space-constrained applications
  • Excellent load capacity for size
  • Long service life with proper maintenance

Image

Image needed: TRB RC 6702-2RS ball bearings showing 15x21x4mm dimensions and blue rubber seals.

Visual Description: These precision ball bearings appear as small, compact units with the characteristic 15x21x4mm dimensions. The blue rubber seals are visible on both sides, providing a professional appearance while indicating the ABEC 3 steel construction. The bearings have a smooth, precision-machined finish typical of quality RC components.

Applications

Common use cases and applications for these components:

  • RC car wheel hubs and axles
  • High-speed RC vehicle drivetrains
  • Precision mechanical assemblies
  • Small motor applications
  • RC helicopter rotor systems
  • Drone gimbal mechanisms
  • Model aircraft control surfaces
  • Precision instrumentation
  • Small machinery and equipment
  • Hobby and maker projects requiring precision rotation

Performance Characteristics

Speed and Load Ratings:

  • Maximum RPM: High-speed capability suitable for RC applications
  • Radial Load: Excellent radial load capacity for size
  • Axial Load: Limited axial load capacity (typical for ball bearings)
  • Operating Temperature: Standard range for RC applications
  • Noise Level: Low noise operation due to precision construction

Seal Performance:

  • Contamination Protection: Excellent protection from dirt and debris
  • Moisture Resistance: Good resistance to water and humidity
  • Lubrication Retention: Seals help maintain internal lubrication
  • Friction: Slightly higher friction than open bearings but acceptable for most applications

Installation and Maintenance

Installation Guidelines:

  1. Bearing Selection: Verify 15x21x4mm dimensions match application requirements
  2. Cleaning: Clean bearing seat and shaft thoroughly before installation
  3. Installation: Press bearing into place using proper tools (avoid hammering)
  4. Alignment: Ensure bearing is properly seated and aligned
  5. Clearance: Verify adequate clearance for bearing operation
  6. Testing: Check for smooth rotation and proper fit

Maintenance Tips:

  • Inspection: Periodically check for wear, damage, or contamination
  • Cleaning: Clean external surfaces but avoid removing seals
  • Lubrication: Sealed bearings typically don’t require additional lubrication
  • Replacement: Replace when rough operation or excessive play develops
  • Storage: Store in clean, dry environment to prevent corrosion

Technical Notes

Important technical considerations and usage tips:

  • Precision Grade: ABEC 3 provides good balance of precision and cost for RC applications
  • Seal Type: 2RS seals provide excellent protection but slightly increase friction
  • Load Direction: Primarily designed for radial loads; limited axial load capacity
  • Speed Limits: High-speed capability but verify against specific application requirements
  • Temperature Range: Suitable for typical RC operating temperatures
  • Mounting: Use proper installation tools to avoid bearing damage
  • Preload: Minimal preload required for most RC applications
  • Replacement: Always replace bearings in pairs when possible for balanced performance

Tags

ball-bearings, 6702-2rs, trb-rc, precision-bearings, rubber-sealed, 15x21x4mm, abec-3, chrome-steel, rc-bearings cabinet-5 bin-48 status-available

Notes

These TRB RC 6702-2RS precision ball bearings provide excellent performance for RC applications requiring the 15x21x4mm size. The combination of chrome steel construction, ABEC 3 precision, and dual rubber seals makes them ideal for high-speed RC vehicle components where contamination protection is important. Having 20+ pieces ensures adequate supply for multiple projects or maintenance needs. The compact 4mm width makes them suitable for space-constrained applications while still providing excellent load capacity and smooth operation. Perfect for RC enthusiasts, model builders, and precision mechanical applications requiring reliable, sealed ball bearings.

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