Overview

This document provides detailed technical specifications and component descriptions for a series of drilling head units and speed regulators, including models SD3-60, SD3-80, SD3A-55, and SD3A-75. The equipment supports both hydraulic and pneumatic propulsion systems and offers optional American-made speed regulators (White Horse brand).

1. Specifications

• Drilling Capacity: Up to φ6 mm on S45C steel.
• Max Stroke: 55 mm to 80 mm depending on model.
• Max RPM: 10,000 RPM.
• Propel Pressure: Hydraulic: 10~15 kg/cm²; Pneumatic: 4~8 kg/cm².
• Cylinder Diameter (Area): Forward (F): 12.6 cm²; Return (B): 7.1 cm².
• Horsepower: 1/2 HP, 3-phase, 220V/380V.
• Transmission Belt: 5J - 200.
• Bearings: Spindle bearing 6002ZZ×4; Pulley bearing 6002ZZ×3.
• Seals and O-rings: Various TC and AG series seals and O-rings specified for front cover, back cover, and piston.
• Roundness Tolerance: ≤ 0.003 mm.

2. Drilling Head Units

Each model (SD3-60, SD3-80, SD3A-55, SD3A-75) has detailed dimensional drawings and component specifications, including spindle types (ER16, JT1, JT2, KH14E), mounting orientations (left/right, front/back), and weight (21 kg per unit).

• Drilling holes: Typically 4 to 6 holes of φ9 mm.
• Dimensions include precise tolerances for diameters, lengths, and thread sizes (e.g., M17×1).
• Optional speed regulators from White Horse brand can be integrated.

3. Propulsion Types

• Hydraulic Models: SD3-60 and SD3-80 series.
• Pneumatic Models: SD3A-55 and SD3A-75 series.

4. Components and Accessories

• Speed regulators (optional) are American-made White Horse brand units.
• Seals and O-rings are specified with exact part numbers and quantities for maintenance and replacement.
• Bearings and belts are standardized for durability and performance.

5. Key Parameters and Limitations

• Maximum drilling diameter limited to 6 mm on S45C steel.
• Maximum stroke varies by model, affecting drilling depth capability.
• Operating pressures must be maintained within specified ranges for hydraulic and pneumatic systems.
• Rotational speed capped at 10,000 RPM to ensure mechanical integrity.

6. Best Practices and Recommendations

• Use specified seals and O-rings to maintain pressure integrity and prevent leaks.
• Regularly inspect spindle and pulley bearings for wear to avoid operational failures.
• Ensure proper belt tension and alignment for efficient power transmission.
• Consider optional speed regulators for enhanced speed control and stability.

Summary

This technical document comprehensively details the mechanical and operational specifications of drilling head units with both hydraulic and pneumatic propulsion options. It emphasizes precision in component dimensions, quality of seals and bearings, and offers flexibility with optional speed regulators. The information supports maintenance, assembly, and operational optimization of the drilling equipment.