Double Ended Standard_no_bckgrd_2

Double-Ended
Pivot Bearings

Double-Ended Free-Flex® Pivots carry higher radial loads than cantilevered pivot bearings and are mounted with both ends attached or supported allowing the center portion to rotate. General double-ended pivot bearing applications include weigh stations, u-joints, seismometers, and linkage systems.

Overview

  • Both ends fixed, with a center portion
    that is free to rotate.
  • Supports suspended loads.
  • Carries higher radial loads.
  • 30 standard design offerings.
  • Click HERE for solid model downloads.

Features

The flexure body is AISI 410 corrosion-resistant steel and the springs are AISI 420 corrosion resistant steel. These flexures utilize a brazed construction consisting of a silver/copper and nickel filler material.

The spring rates are usually within ±10% or less of the tabulated values above. However, the tolerances can be much larger for spring rate values below .0018 in-lb/deg. Contact our engineering staff if closer tolerances or actual values are required.

For applications where the braze alloy presents a problem, electron beam welded construction is available. If welded construction is desired please contact our engineering staff for assistance.

For applications where a tighter diameter tolerance is required, +0.0000/-0.0002 inches, specify “T2” after the catalog number. If other tolerance variations are desired please contact our engineering staff for assistance.

Characteristics chart

Radial load capacities noted below correspond to vertical radial loads resulting in compression (Vc) or tension (Vt) of the flexures, as depicted below.

Use the Pivot Characteristics Chart PDF in combination with our life cycle curves to determine the proper pivot for your application:

Nominal Outside
Diameter (Inch)
D
+0.0000-0.0005

Catalog Number

Load Capacity – (Pounds)

Load At Center of “C”

Torsional   Spring Rate

See Note (2)

in – lb

Degree

See Note (1)

Series 6000

Double Ended

(size-type)

Vc Vt L
±0.003
B
±0.005

C
+0.005
-0.015
0.12506004-40028.028.00.2000.0450.0850.0140
6004-60017.725.00.0017
6004-8002.24.70.0002
0.15626005-40044.044.00.2500.0570.1100.0279
6005-60027.639.00.0035
6005-8003.57.40.0004
0.18756006-40063.063.00.3000.0670.1300.0473
6006-60039.656.00.0057
6006-8004.99.00.0007
0.25006008-400113.0113.00.4000.0900.1750.1141
6008-60070.7100.00.0143
6008-8008.519.00.0018
0.31256010-400176.0176.00.5000.1120.2200.2234
6010-600110.0156.00.0286
6010-80014.029.00.0036
0.37506012-400253.0253.00.6000.1350.2650.3840
6012-600159.0225.00.0480
6012-80019.842.00.0058
0.50006016-400450.0450.00.8000.1800.3550.9080
6016-600283.0400.00.1134
6016-80035.475.00.0142
0.62506020-400703.0703.01.0000.2250.4451.8500
6020-600442.0625.00.2321
6020-80055.0117.00.0295
0.75006024-4001013.01013.01.2000.2700.5353.1800
6024-600636.0900.00.3980
6024-80078.0169.00.0500
1.00006032-4001800.01800.01.6000.3700.7357.5200
6032-6001131.01600.00.9390
6032-800141.0300.00.1175
  1. Pounds at zero deflection based on pure radial load. When the load is applied directly through a single spring, multiply capacity by 0.707. Pivot orientated such that a radial load puts flexures in Compression (Vc) or Tension (Vt).
  2. At zero load.

To learn more about Riverhawk’s Double-Ended Pivot Bearings, please contact a member of our team. We are happy to assist you with your project needs.

compression loading life cycle curves

tension loading life cycle curves

Resources

Read our Technical Papers and Case Studies to learn more about our products and their functions.