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Cantilevered Cutaway

Cantilevered Pivot Bearing Cutaway

 

  

Cantilevered (Single-Ended) Pivot Bearings

Cantilevered pivot bearings are the most commonly used type of pivot bearing. With these single ended bearings, one end is attached or supported which allows the other end to rotate. General cantilevered pivot bearing applications include gimbal rings, mirror mounts, various linkages, and vibration isolation systems.

The load capacities shown below represent maximum allowable forces in any single direction. If the intended application has multi-directional loading, such as combined axial and radial loads, bending moments, extreme temperatures, or will be subjected to vibration or shock loads please consult our engineering staff for assistance.

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

Nominal
Outside
Diameter
 
(Inch)
 
D
 
+0.0000
-0.0005
Torsional
Spring
Rate
 
(in-lb)
(Degree)
 
See Note 2
Radial Load
Capacity
(Pounds)
 
Load at Center
of "A"
 
See Note 1
Axial
Load
Capacity
(Pounds)
Cantilevered (Single-Ended) Pivot Bearings
Catalog
Number
Vc
Vt
Pa
L
±0.003
A
±0.005
 Series 5000
 
Cantilevered
0.1250
0.0140
25.5
25.5
24.5
0.200
0.095
5004-400
0.0017
8.9
13.0
12.3
5004-600
0.0002
1.0
3.7
5.9
5004-800
0.1562
0.0279
39.5
39.5
38.7
0.250
0.120
5005-400
0.0035
13.8
20.0
19.4
5005-600
0.0004
1.5
6.0
9.7
5005-800
0.1875
0.0473
56.0
56.0
56.4
0.300
0.142
5006-400
0.0057
19.8
28.0
27.9
5006-600
0.0037
12.2
20.2
24.4
5006-660
0.0007
2.1
8.0
13.9
5006-800
0.2500
0.1141
101.0
101.0
99.0
0.400
0.190
5008-400
0.0143
35.5
51.0
49.4
5008-600
0.0018
3.7
14.5
24.7
5008-800
0.3125
0.2234
158.0
158.0
154.0
0.500
0.238
5010-400
0.0286
55.0
79.0
77.5
5010-600
0.0036
5.8
23.0
38.8
5010-800
0.3750
0.3840
228.0
228.0
223.0
0.600
0.285
5012-400
0.0480
80.0
114.0
112.0
5012-600
0.0058
8.4
32.8
55.4
5012-800
0.5000
0.9080
403.0
403.0
392.0
0.800
0.380
5016-400
0.1134
141.0
202.0
196.0
5016-600
0.0142
14.6
58.0
98.0
5016-800
0.6250
1.8500
634.0
634.0
615.0
1.000
0.475
5020-400
0.2321
222.0
317.0
308.0
5020-600
0.0295
23.0
93.0
155.0
5020-800
0.7500
3.1800
910.0
910.0
884.0
1.200
0.570
5024-400
0.3980
318.0
455.0
442.0
5024-600
0.0500
33.0
130.0
221.0
5024-800
1.0000
7.5200
1620.0
1620.0
1570.0
1.600
0.770
5032-400
0.9390
567.0
815.0
785.0
5032-600
0.1175
60.0
236.0
392.0
5032-800
Notes:
  1. Pounds at zero deflection based on pure radial load. Performance of pivot is a function of number of cycles, angular travel, and loading. Must use life cycle curves for selection of proper pivot. When the load is applied directly through a single spring, multiply capacity by 0.707.
  2. At zero load, Torsional Spring Rate may change with radial load.

Standard Material
The pivot body is AISI 410 or 420 corrosion-resistant steel and the flexing elements are AISI 420 corrosion resistant steel. These pivots utilize brazed construction consisting of a silver/copper and nickel filler material.

Torsional Spring Rate
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.

Welded Construction
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.

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