Double-Ended Pivot Bearings

Double Ended
Pivot Bearing Cutaway

These 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 applications include weigh stations, u-joints, seismometers, and various linkages.

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.

Use the Pivot Characteristics Chart below in combination with our life cycle curves to determine the proper pivot for your application. Click here to see an example of how to choose the right pivot.

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 "C" See Note 1		Axial Load Capacity (Pounds)				Catalog Number
Nominal Outside Diameter (Inch) D +0.0000 -0.0005	Torsional Spring Rate (in-lb) (Degree) See Note 2	Vc	Vt	Pa	L ±0.003	E ±0.005	C +0.005 -0.015	Series 6000 Double-Ended
0.1250	0.0140	28.0	28.0	24.5	0.200	0.045	0.085	6004-400
	0.0017	17.7	25.0	12.3				6004-600
	0.0002	2.2	4.7	5.9				6004-800
0.1562	0.0279	44.0	44.0	38.7	0.250	0.057	0.110	6005-400
	0.0035	27.6	39.0	19.4				6005-600
	0.0004	3.5	7.4	9.7				6005-800
0.1875	0.0473	63.0	63.0	56.4	0.300	0.067	0.130	6006-400
	0.0057	39.6	56.0	27.9				6006-600
	0.0007	4.9	9.0	13.9				6006-800
0.2500	0.1141	113.0	113.0	99.0	0.400	0.090	0.175	6008-400
	0.0143	70.7	100.0	49.4				6008-600
	0.0018	8.5	19.0	24.7				6008-800
0.3125	0.2234	176.0	176.0	154.0	0.500	0.112	0.220	6010-400
	0.0286	110.0	156.0	77.5				6010-600
	0.0036	14.0	29.0	38.8				6010-800
0.3750	0.3840	253.0	253.0	223.0	0.600	0.135	0.265	6012-400
	0.0480	159.0	225.0	112.0				6012-600
	0.0058	19.8	42.0	55.4				6012-800
0.5000	0.9080	450.0	450.0	392.0	0.800	0.180	0.355	6016-400
	0.1134	283.0	400.0	196.0				6016-600
	0.0142	35.4	75.0	98.0				6016-800
0.6250	1.8500	703.0	703.0	615.0	1.000	0.225	0.445	6020-400
	0.2321	442.0	625.0	308.0				6020-600
	0.0295	55.0	117.0	155.0				6020-800
0.7500	3.1800	1013.0	1013.0	884.0	1.200	0.270	0.535	6024-400
	0.3980	363.0	900.0	442.0				6024-600
	0.0500	78.0	169.0	221.0				6024-800
1.0000	7.5200	1800.0	1800.0	1570.0	1.600	0.370	0.735	6032-400
	0.9390	1131.0	1600.0	785.0				6032-600
	0.1175	141.0	300.0	392.0				6032-800
Notes: 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. 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 nominal 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.