Neutral - K3994/K3920 | Double Direction Taper Roller Bearing Units | 66.67 × 112.71 × 30.16 mm

Details

Neutral K3994/K3920 is a double direction taper roller bearing units with inner diameter 66.67 mm, outer diameter 112.71 mm and width 30.16 mm. Additional specifications include bore type CYLINDRICAL, cage STANDARD and lubrication STANDARD.

These bearing is a heavy-duty, Imperial (Inch-series) Double-Row Tapered Roller Bearing. This specific part configuration is typically designed in a TDI (Tapered Double Inner) structural setup, featuring a unified double cone (inner ring) assembly matched with two single cups (outer rings). Because the two rows of internal rollers are arranged face-to-face (DF configuration) or back-to-back, the assembly effectively grounds heavy axial forces pushing from both left and right directions, simultaneously supporting severe radial loads. Material : The bearing is manufactured from high-purity, case-carburized (case-hardened) or through-hardened premium bearing-grade alloy steel (typically AISI 4320, 8620, or 52100) paired with stamped steel cages. Features are : Enhanced System Rigidity, Pre-Set Internal Clearance, Moment Load Resistance, Logarithmic Roller Profiling, Friction-Reducing Rib Interface, Predictable Fatigue Life, Grooves and Holes, Acoustic & Vibration Dampening, High Thermal Stabilization. Applications : Metal Rolling & Steel Mills, Industrial Power Transmission & Gearboxes, Pulp and Paper Mill Press Rolls, Construction & Material Handling, Mining, Quarrying & Mineral Extraction, Marine Propulsion & Port Machinery, Power Generation & Energy Infrastructure.

Specifications