Cantilevered (Single-Ended) Flexures

Cantilevered Free-Flex® Pivots are the most common type of flexure. Our single-ended flexures are attached or supported on one end which allows the other end to rotate. General applications include gimbal rings, mirror mounts, linkage systems and vibration isolation systems.

Features

Standard Material

Standard pivots are brazed construction and consist of an AISI 410 corrosion-resistant steel body with AISI 420 flexures.

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

Electron beam welded pivots are available for applications with high applied loads and low rotational angles. Please contact Riverhawk engineering for assistance or further information.

Tighter Diameter Tolerance

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 “A”				Torsional Spring Rate See Note (2) in – lb Degree	Maximum Axial Load (lbs.)
	Catalog Number	See Note (1)
	Series 5000 Cantilevered (size-type)	Vc	Vt	L ±0.003	A ±0.005
0.1250	5004-400	25.5	25.5	0.200	0.095	0.0140	24
	5004-600	8.9	13.0			0.0017	12
	5004-800	1.0	3.7			0.0002	5.8
0.1562	5005-400	39.5	39.5	0.250	0.120	0.0279	38
	5005-600	13.8	20.0			0.0035	19
	5005-800	1.5	6.0			0.0004	9.6
0.1875	5006-400	56.0	56.0	0.300	0.142	0.0473	56
	5006-600	19.8	28.0			0.0057	27
	5006-660	12.2	20.2			0.0037	27
	5006-800	2.1	8.0			0.0007	14
0.2500	5008-400	101.0	101.0	0.400	0.190	0.1141	98
	5008-600	35.5	51.0			0.0143	49
	5008-800	3.7	14.5			0.0018	25
0.3125	5010-400	158.0	158.0	0.500	0.238	0.2234	152
	5010-600	55.0	79.0			0.0286	76
	5010-800	5.8	23.0			0.0036	38
0.3750	5012-400	228.0	228.0	0.600	0.285	0.3840	222
	5012-600	80.0	114.0			0.0480	111
	5012-800	8.4	32.8			0.0058	55
0.5000	5016-400	403.0	403.0	0.800	0.380	0.9080	392
	5016-600	141.0	202.0			0.1134	196
	5016-800	14.6	58.0			0.0142	98
0.6250	5020-400	634.0	634.0	1.000	0.475	1.8500	612
	5020-600	222.0	317.0			0.2321	306
	5020-800	23.0	93.0			0.0295	154
0.7500	5024-400	910.0	910.0	1.200	0.570	3.1800	884
	5024-600	318.0	455.0			0.3980	442
	5024-800	33.0	130.0			0.0500	221
1.0000	5032-400	1620.0	1620.0	1.600	0.770	7.5200	1570
	5032-600	567.0	815.0			0.9390	785
	5032-800	60.0	236.0			0.1175	392

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).
At zero load.

compression loading life cycle curves

tension loading life cycle curves

Axial Load Capability for Free-Flex Pivots

Note: The maximum axial loads listed below are for pivots loaded in a purely axial direction.

For combined radial and axial loading contact TRW Utica Engineering.

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

Resources

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