The Msegram: A useful multichannel feature synchronous extraction tool for detecting rolling bearing faults

•A multichannel feature synchronous extraction tool i.e. Msegram is proposed for detecting rolling bearing faults.•Tensor synchronous denoising by HOSVD is studied for multichannel signal preprocessing.•Multi-layer K-value MVMD is designed for multichannel synchronous adaptive decomposition.•A tower-shaped EC map is proposed to visualize the feature output of multichannel bearing faults.•Simulations and experimental cases of compound faults are used to testify Msegram with comparisons.