Engineering Reference

Rod End & Spherical Bearings

Testing Capabilities

NHBB has a variety of equipment to test spherical and rod end bearings under diverse conditions. NHBB performance data exceeds military and individual manufacturers' design requirements. Shown below are the maximum capabilities of NHBB's testing machines.

Table of Test Capabilities



Material Testing (Universal Testing Machine)

110,000 Lbs.

Static Compression/Tension

200,000 Lbs.

Low Speed Oscillation (up to 50 cpm)
Uni-directional Loading
(1 machine, 2 station) (700°F)
(1 machine, 2 station) (700°F)

20,000 Lbs.
70,000 Lbs.

Moderate To High Speed Oscillation
Uni-directional Load (room temp.)
(1 machine, 2 station) (1000 cpm)
(1 machine, 2 station) (1500 cpm)
(1 machine, 6 station) (200-600 cpm)

1,000 Lbs.
1,000 Lbs.
8,000 Lbs.

Low Speed Oscillation
Reversing or Alternating Load (room temp.)
(1 machine, 2 station) (up to 50 cpm)

40,000 Lbs.

High Speed, Oscillation
Reversing and Alternating Load (room temp.)
(2 machines, 1 station each) (400 cpm)

2,500 Lbs.

Airframe Track Roller
Testing Machine (roller against flat plate)

60,000 Lbs.

Polymer Test Equipment

NHBB has the following thermal analysis (TA) equipment to support and control the quality of composites/polymers through analytical techniques that measure the physical and mechanical properties as a function of temperature and time:

  1. Differential Scanning Calorimeter (DSC)
  2. Thermogravimetric Analyzer (TGA)
  3. Dynamic Mechanical Analyzer (DMA)
  4. Thermomechanical Analyzer (TMA)
  5. Thermo-Oxidative Stability Test (TOS)
  6. Acid Digestion System
  7. Fourier Transform Infrared Spectroscopy (FTIR)