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2-Stage Planetary Wheel Hub Reducer Cutaway (11-Body Drive)
Heavy-duty 2-stage planetary final drive for mining dump trucks and electric wheel loaders (total ratio i = 22.4 : 1) with quarter cutaway through the rotating wheel hub, stationary ring gear, and stage-2 carrier.
In electric wheel motors and heavy off-highway axles, a high-speed sun shaft drives a two-stage planetary reduction housed directly inside the wheel rim hub. Stage 1 reduces speed by 4.0× via 3 planets and feeds the Stage 2 sun gear, which drives 4 wider planets to deliver a combined 22.4:1 torque multiplication to the wheel hub.
1. Geometry & FEA Mesh
- •11 independent solid bodies: stationary spindle mount, rotating wheel hub with studs (cutaway), internal ring gear (cutaway), end cover (cutaway), input sun shaft S1, 3 planets P1, carrier C1, floating sun S2, 4 planets P2, output carrier C2 (cutaway), and main hub bearings.
- •Zero CAD Collisions Gate verified across all 11 bodies.
2. Loads & Boundary Conditions
- •Guaranteed radial tip clearances and carrier pin bore clearances across both planetary stages.
3. Simulation Results & Findings
- ✓Allows engineers to toggle the outer wheel hub and ring gear in the model tree to inspect both planetary stages in detail.
Showcases complex multi-stage epicyclic gearbox architecture in WebCAE with 11 distinct components and zero geometric collisions.
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- ✓Nonlinear Contact & Buckling (Kσ, MITC4, RBE2/RBE3)
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