Overview

This document provides detailed technical specifications and data for Rod End Spherical Bearings, specifically the Precision Extra Capacity Series, Four Piece - Metal to Metal design. It covers two main series: BHM and HMX G, including dimensions, materials, tolerances, load capacities, and optional features.

Materials and Construction

• Outer Member: Made from 4130 or 4340 alloy steel, heat treated, magnetic particle inspected, and coated for corrosion resistance.
• Balls: Manufactured from 52100 alloy steel, heat treated and chrome plated for durability.
• Inserts: Made from copper alloy.

Dimensions and Tolerances

Dimensions are provided in inches with specific tolerance ranges depending on the series and dimension type:

• Series BHM: Tolerances vary from +.0015/- .0005 inches to +.010/- .010 inches depending on the dimension.
• Series HMX G: Tolerances include +.000/- .005 inches and +.005/- .005 inches among others.

Key dimensions include bore size, ball diameter, ball flat diameter, housing width, head diameter, length to center of ball, thread length, and thread size.

Series Specific Data

Series BHM

• Bore sizes range from 0.750 to 1.750 inches.
• Ball diameters range from 0.281 to 0.687 inches.
• Maximum static radial loads range from 3,260 lbs to 21,570 lbs.
• Approximate weights range from 0.06 lbs to 0.72 lbs.
• Thread sizes vary from 0.3125-24 to 0.8750-14.
• Lubricator is optional and indicated by suffix "G" in part numbers.

Series HMX G

• Bore sizes range from 0.375 to 0.875 inches.
• Ball diameters range from 0.250 to 0.750 inches.
• Maximum static radial loads range from 4,290 lbs to 29,800 lbs.
• Approximate weights range from 0.05 lbs to 0.64 lbs.
• Thread sizes vary from 0.2500-28 to 0.7500-16.
• Lubricator is optional; removing the "G" suffix indicates no lubricator.

Thread and Design Options

• Left-hand threads are indicated by adding the letter "L" to the prefix (e.g., BHML4 or HMXL4G).
• Design options and engineering data are referenced on other pages (pages 28-31).
• "H" tolerance across inserts is ±0.015 inches.

Additional Notes

• Lubricator is optional on BHM series and indicated by suffix "G".
• Dimensions and tolerances are critical for ensuring proper fit and function.
• Protective coatings and heat treatments enhance durability and corrosion resistance.

Summary

This document serves as a comprehensive technical reference for selecting and specifying rod end spherical bearings in the BHM and HMX G series. It details material specifications, dimensional tolerances, load capacities, and optional features such as lubricators and thread direction. The data supports engineering design and procurement decisions for applications requiring precision and extra capacity bearings.