Overview

This document provides detailed technical specifications and product information for Maxdrill's Bench and Long Hole Drilling equipment, specifically the T38 series with 1 1/2” thread size. It covers button bits, reaming tools, drill rods, couplings, and weight data relevant to drilling operations.

1. Button Bits Specifications

The T38 button bits are designed for bench and long hole drilling with various sizes and configurations:

• Thread Type: T38 (1 1/2”)
• Button Sizes: Multiple button diameters ranging from 6 mm to 14 mm, arranged in different patterns (e.g., 3×7, 4×10, 8×12)
• Gauge Sizes: 64 mm, 70 mm, 76 mm, 89 mm, and 102 mm
• Flushing Hole Diameter: Typically 2 1/2” to 3 1/2”
• Bit Angles: Mostly 35°, with some at 30°
• Classes: Medium (M) and Heavy (H) duty classifications
• Part Numbers: Detailed part numbers provided for each configuration

The bits include front button bits and dome bits, optimized for different drilling conditions.

2. Reaming Tools

Reaming tools compatible with the T38 thread are specified with:

• Gauge sizes from 89 mm to 127 mm
• Button arrangements such as 2×9, 4×8, 10×13, and 16×14
• Flushing hole sizes mostly 3 1/2” to 5”
• Bit angles consistently at 35°
• Part numbers for each reaming tool variant

3. Drill Rods

Drill rods with T38/T38 threads are detailed with the following parameters:

• Rod diameters: 38 mm (1 1/2”) and 32 mm (1 1/4”)
• Lengths ranging from 900 mm to 5490 mm (3 ft to 18 ft)
• Part numbers for standard and MF (modified) rods
• Hex rods with T38/T38 threads also listed with dimensions and part numbers

4. Couplings

Couplings for connecting rods include:

• Crossover coupling T38-R32 and T38-T45
• Dimensions and part numbers provided

5. Weight Table and Index

The document includes a comprehensive weight table listing part numbers alongside their weights in kilograms and corresponding page references. Weights range from approximately 1.4 kg for smaller bits to over 44 kg for larger reaming tools.

Critical Information and Best Practices

• Ensure correct matching of thread types (T38) and sizes for compatibility.
• Select button bit configurations based on drilling angle and rock conditions (medium vs heavy class).
• Use appropriate flushing hole sizes to optimize drilling fluid flow and bit cooling.
• Choose drill rod lengths and diameters according to drilling depth and equipment specifications.
• Refer to part numbers carefully for ordering and maintenance to avoid mismatches.

Summary

This technical document serves as a detailed product catalog and specification guide for Maxdrill’s T38 bench and long hole drilling tools. It provides essential data for selecting the right bits, reaming tools, rods, and couplings to ensure efficient and reliable drilling operations in mining or construction environments.