1 years
China
1. Product Overview
Part Number: N097696
Dimensions: Thickness 6mm × Width 7.8mm × Length 17mm
Compatibility: Dedicated to DeWalt DWE4011 and DWE4120 angle grinders
2. Technical Specifications
Material: Graphite-copper composite (18% copper content)
Electrical Properties:
Resistivity: 1.1×10⁻⁵Ω·m
Current capacity: 10–12A
Wear Rate: <0.13mm/100 hours at 10,000 RPM
3. Compatible Models
DeWalt DWE4011: 4-1/2" angle grinder (7.5A, 11000 RPM)
DeWalt DWE4120: 4-1/2" angle grinder (1100W, 13000 RPM)
Verification: Check model label on grinder body for compatibility
4. Function & Working Principle
Current Conduction: Transmits electricity to rotor windings via commutator contact
Design Feature: Arc-shaped surface matches commutator curvature for stable contact
Spring Pressure: 1.6–1.9kg to maintain contact under high-speed vibration
5. Replacement Indicators
Residual length < 8.5mm (50% of original 17mm)
Excessive sparking (visible arcs >4mm) during operation
Reduced grinding efficiency or motor stalling
Commutator wear grooves >0.4mm depth
6. Installation Steps
Unplug the grinder and remove the rear cover
Extract old brushes and springs (note spring direction)
Clean commutator with alcohol, remove carbon dust
Install new brushes, ensuring arc surface fits commutator
Verify spring tension (1.7kg recommended with force gauge)
7. Maintenance Tips
Inspect brushes every 25 hours of use
Replace both brushes simultaneously for balanced pressure
Avoid operating with worn brushes to prevent commutator damage
Store in dry environment to prevent moisture degradation
8. Genuine Part Verification
Check for DeWalt logo and part number "N097696" on packaging
Cross-reference with DWE4011/DWE4120 user manual (page 22 for parts list)
Aftermarket alternatives should match OEM dimensions and material specs
9. Performance Expectations
Service life: 60–80 hours under normal use
Temperature resistance: Up to 130°C under full load
Electrical stability: Consistent conductivity at 10,000–13,000 RPM