6.31622 MMCarbon Brush for E64 Angle Grinder

I. Basic Information and Core Parameters

• Dimension Specifications

• Thickness: 6.3mm × Width: 16mm × Length: 22mm

• Standard fit for angle grinder motor brush slots.

• Product Code

• Model E64, a wear-and-tear replacement carbon brush for power tools, used for motor current conduction.

II. Compatible Equipment and Typical Models

• Applicable Tool Type

• Specifically for angle grinders, compatible with models such as Bosch GWS 180, DeWalt D28402, and Makita 9558HN.

• Compatibility Logic

• Dimensions designed for high-speed angle grinder operations (suitable for 10,000–12,000 RPM).

• Spring pressure range: 1.5–2kg to ensure stable contact at high speeds.

III. Technical Parameters and Working Mechanism

1. Material Characteristics

• Electrographite with 15–20% copper powder, conductivity up to 10⁻⁵Ω·m class.

• Wear coefficient <0.15mm/100h, suitable for heavy-load angle grinder operations.

2. Current Conduction Principle

• Maintains sliding contact with the commutator via spring pressure, transmitting current to rotor windings to drive the grinding wheel at high speeds (e.g., 11,000 RPM during metal cutting).

3. Wear Replacement Threshold

• Replace immediately when remaining length is less than 1/2 of the original, or when abnormal sparking or obvious body vibration occurs to prevent motor burnout from commutator wear.

IV. Installation and Maintenance Guidelines

• Installation Steps

1. Power off and remove the angle grinder's rear cover; extract the old carbon brush and spring.

2. Clean commutator surface carbon powder with alcohol and inspect for grooves or burn marks.

3. Polish the new carbon brush arc with sandpaper to fit the commutator; ensure the spring is secured in the fixing slot (replace the spring if pressure is insufficient).

• Maintenance Recommendations

• Inspect wear every 50 hours of use. When replacing carbon brushes, clean internal motor carbon powder to avoid heat dissipation issues from dust accumulation.

V. Comparison with Other Carbon Brushes

VI. Purchase and Replacement Recommendations

• Specification Verification

• Beyond dimensions, confirm current-carrying capacity (typically 10–15A) and compatible voltage (220V/110V). Note voltage compatibility for imported models.

• Professional Tips

• If the angle grinder experiences sudden speed drops or abnormal noise, the carbon brush may be worn or the spring failed. Replace the entire carbon brush assembly (including the spring) and check commutator wear depth (grind for repair if exceeding 0.5mm).