Micro Traders Carbon Brushes 6x8x13mm for Rotary Polishers

1. Product Overview

These carbon brushes are designed as replacement parts for various rotary polisher models. They are essential components for the proper functioning of electric motors, ensuring efficient power transfer and preventing motor damage due to wear.

Image 1.1: A rotary polisher alongside a carbon brush, illustrating the product's application.

2. Specifications

• Dimensions: 6mm (width) x 8mm (thickness) x 13mm (length)
• Material: Carbon
• Application: Rotary Polisher maintenance and repair
• Quantity: 2 Pairs (4 individual brushes)
• Key Features: High strength, long service life, low sparking

Image 2.1: Detailed view of a carbon brush with its precise dimensions indicated.

3. Compatibility

These carbon brushes are compatible with a wide range of RUPES rotary polisher models. Please verify your tool's model number before purchase to ensure proper fit.

Compatible RUPES Models include:

• AR 51 E, AR 52 E, AR 52 EN, AR 38 N, AR 38 EN
• BA 215, BA 215 E, BA 31, BA 31 E, BA 31 N, BA 31 EN
• BK 15, BK 15 AE, BK 151 AE, BK 22, BK 22 AE, BK 22 E, BK 201 A, BKR 201 A
• BR 51 A, BR 51 AE, BR 55 A, BR 55 AE, BR 55, BR 51 A, BR 63 AE, BR 65 AE, BR 106 AE, BR 109 AE, BR 112 AE
• EK 150 AE, EK 200 A, FR 32 E
• GL 040, GL 040 E
• LHR 15 ES, LHR 21 E
• LH 16, LH 16 E, LH 16 EN, LH 16 ENS, LH 18 E, LH 18 EN, LH 18 ENS
• SL 42 A, SL 42 AE

4. Installation (Setup)

Worn carbon brushes are a common cause of poorly running or intermittent motors. Replacing them can restore your tool's performance. Always ensure the tool is unplugged from the power source before beginning any maintenance.

1. Disconnect Power: Unplug your rotary polisher from the electrical outlet to prevent accidental startup.
2. Locate Brush Caps: Identify the brush caps on the motor housing. These are typically small, round, and slotted, allowing them to be unscrewed.
3. Remove Old Brushes: Use a flat-head screwdriver to carefully unscrew the brush caps. Once the cap is removed, gently pull out the old carbon brush and its spring assembly. Note the orientation of the brush.
4. Inspect and Clean: While the brushes are out, inspect the commutator (the part of the motor that the brushes contact) for any excessive wear or debris. Clean if necessary.
5. Insert New Brushes: Carefully insert the new carbon brushes into the brush holders, ensuring they slide in smoothly and the spring is properly seated behind them. The copper wire lead should be positioned correctly to connect to the terminal.
6. Secure Brush Caps: Screw the brush caps back into place, tightening them securely but without over-tightening.
7. Test: Plug the polisher back in and perform a brief test run to ensure the new brushes are functioning correctly.

It is recommended to replace both carbon brushes at the same time to ensure balanced motor performance and extend the life of your tool.

Image 4.1: Visual guide demonstrating the steps for carbon brush replacement.

5. Maintenance

Carbon brushes are wear-and-tear components and require periodic inspection and replacement. Regular maintenance ensures the longevity and optimal performance of your rotary polisher.

• Regular Inspection: Periodically check the carbon brushes for wear. If they are significantly shortened or show signs of chipping, it's time for replacement.
• Keep Clean: Ensure the motor's ventilation slots are clear of dust and debris to prevent overheating, which can accelerate brush wear.
• Proper Storage: Store your polisher in a clean, dry environment when not in use.

6. Troubleshooting

If your rotary polisher is experiencing issues, worn carbon brushes might be the cause. Consider the following:

• Motor Not Starting: If the motor fails to start, or starts intermittently, check the carbon brushes. They might be too short to make proper contact with the commutator.
• Excessive Sparking: While some sparking is normal, excessive sparking at the commutator can indicate worn brushes or a dirty commutator.
• Reduced Power/Speed: Worn brushes can lead to a loss of power or inconsistent speed from the motor.
• Unusual Noise: Grinding or squealing noises from the motor area can sometimes be attributed to worn or improperly seated brushes.

If replacing the brushes does not resolve the issue, consult a qualified technician or refer to your polisher's specific service manual.

7. Warranty and Support

Information regarding specific warranty terms or direct support contacts for Micro Traders products is not provided in this manual. Please refer to your purchase documentation or the retailer for details on warranty coverage and customer support options.