Pivot bearings or taut bands are precision suspension components in moving coil mechanisms that provide frictionless rotational movement with high sensitivity and repeatability.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Lifetime | >100 million cycles | |
| Sensitivity | 0.1-10 μrad/mA | |
| Rotation Range | ±30° typical | |
| Restoring Torque | 0.01-10 mN·m/rad | |
| Temperature Range | -40°C to +85°C | |
| Resonant Frequency | 50-1000 Hz |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A practical evidence checklist for RFQ preparation and supplier evaluation.
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Manufacturer profiles associated with Pivot Bearings or Taut Band.
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Pivot bearings use physical pivots rotating in jewel or ball bearings, offering higher load capacity but potential for wear. Taut bands use twisted ribbons under tension, providing completely frictionless movement with infinite resolution but lower torque capacity.
Taut bands are preferred for high-precision instruments like laboratory galvanometers and optical scanners where friction must be eliminated. Pivot bearings are used in industrial applications like panel meters and actuators where higher torque and durability are required.
Temperature changes affect taut band tension and pivot bearing clearances. Humidity can cause corrosion in metal components. Both systems require protection from dust and mechanical shock. Proper material selection and sealing are critical for reliable operation.
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