Excavator Teeth Types E161-3027RC Construction Machinery Parts

Regular Inspection of Drill Rods to Prevent Damage

Regular inspection and damage prevention of drill rods should be combined with wear monitoring, operational standards, and maintenance strategies. Specific measures are as follows:

1. Daily Inspection and Wear Prevention

Visual and Dimensional Inspection

Before and after each shift, inspect the surface of the drill rod for cracks, dents, or deformation, with particular attention to stress-concentration areas such as the drill rod tail and connection points.

Use a caliper to measure the drill rod's diameter and length. If the diameter has worn by more than 10% or the length does not match, replace it immediately.

Check that the drill rod tail is shaped properly to avoid reduced energy transfer efficiency due to excessive wear.

Lubrication and Cleaning

Remove rock dust and oil stains from the drill rod's surface, focusing on cleaning the threaded connection areas and central holes to prevent debris buildup that accelerates wear.

Apply a specialized lubricant (such as NLGI Grade 2 lithium-based grease) to the connection points to reduce friction and prevent rust.

II. Operating Procedures and Equipment Compatibility

Avoid off-center strikes and empty strikes

Regularly inspect the rock drill sleeve and piston condition to ensure the drill rod is centered under load, preventing off-center strikes that cause localized stress concentration.

Avoid empty strikes (continuous impact without contacting the rock) during operation to reduce bit fatigue damage.

Equipment and bit compatibility

Select the appropriate bit diameter, length, and connection method (threaded/conical) based on the rock drill power and hole diameter.

Ensure the flushing system pressure is normal, promptly remove rock dust, cool the bit, and reduce wear.

III. Long-term maintenance and storage

Repair and replacement standards

Minor cracks or wear can be repaired by weld overlay, while severe damage requires replacement.

When storing, apply anti-rust oil and stack neatly to prevent moisture and deformation.

Process optimization

Adopt hydraulic drilling technology to improve energy transfer efficiency and reduce bit tail fatigue stress.

4. Special Operating Conditions

High-dust environments: Shorten the lubrication cycle to every 4 hours and increase the frequency of dust filter cleaning.

Low-temperature environments: Use low-temperature hydraulic oil and preheat the equipment to above 15°C before operation.

The above measures can significantly reduce the risk of drill rod damage and extend its service life.