A rotating shaft with offset centerline used to convert rotary motion into reciprocating motion in oscillation mechanisms.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Length | 200–2000 mm | Overall length including journals and bearing seats. |
| Hardness | 45–55 HRC | Surface hardness after heat treatment; core hardness typically 28–35 HRC.ISO 18265 |
| Shaft Diameter | 25–150 mm | Diameter of the main bearing journals; tolerance class h6 or h7.ISO 286-2 |
| Surface Finish | 0.4–1.6 µm Ra | On bearing journals and eccentric surfaces; finer finish for high-speed applications.ISO 1302 |
| Runout Tolerance | 0.02–0.05 mm | Total indicated runout (TIR) of eccentric journals relative to main bearing axis.ISO 1101 |
| Eccentricity (Throw) | 5–50 mm | Distance between center of main journal and center of eccentric journal; determines stroke. |
| Dynamic Load Capacity | 10–200 kN | Maximum allowable dynamic load at rated speed; depends on bearing size and material.ISO 76 |
| Rotational speed | 100–1500 rpm | Outside this window: Above 1500 rpm may cause excessive vibration and bearing wear; below 100 rpm may lead to inadequate lubrication film. |
| Operating temperature | -20 to 120 °C | Outside this window: Above 120 °C may degrade lubricant and cause thermal expansion; below -20 °C may cause brittle fracture in some steels. |
| Lubrication | ISO VG 46–220 oil or NLGI 2 grease | Outside this window: Inadequate lubrication leads to scuffing and premature failure; wrong viscosity may cause overheating. |
| Misalignment | ≤0.1 mm parallel offset, ≤0.5° angular | Outside this window: Excessive misalignment induces bending stresses and accelerates bearing and seal wear. |
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 mechanical component that generates controlled periodic back-and-forth motion within an industrial system.
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To convert continuous rotary motion into controlled linear or oscillatory motion through an offset journal design.
Eccentricity (throw) is the radial distance between the shaft's rotational axis and the eccentric journal's center, typically specified in millimeters.
Regular lubrication of bearings, monitoring for wear or imbalance, and checking alignment and fastening to prevent fatigue failure.
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