v3.26.1
Cover - shares
 3 Months Ended
Jun. 27, 2026
Jul. 24, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Jun. 27, 2026  
Document Fiscal Year Focus 2027  
Document Fiscal Period Focus Q1  
Entity Information [Line Items]    
Entity Registrant Name RBC BEARINGS INCORPORATED  
Entity Central Index Key 0001324948  
Entity File Number 001-40840  
Entity Tax Identification Number 95-4372080  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --04-03  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One One Tribology Center  
Entity Address, City or Town Oxford  
Entity Address, State or Province CT  
Entity Address, Postal Zip Code 06478  
Entity Phone Fax Numbers [Line Items]    
City Area Code (203)  
Local Phone Number 267-7001  
Entity Listings [Line Items]    
Title of 12(b) Security Common Stock, par value $0.01 per-share  
Trading Symbol RBC  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   31,659,245