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#1978 - GenII® Semi-Precision Bearings - 620 Series
Additional Notes: Also slip and swage fit into 2 1/2" 12g tube and press and swage fit into 2 5/8" 7g tube
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Technical Specifications
Ball Count 16
Ball Diameter 1/4
Bore Extension 0.305
Bore Length 0.650
Bore Size 11/16
Bore Type Hex
Common Most Common
Extension 0.305
Flange Diameter 2.440
Front Protection Polymer Seal
Load Rating 620
Lubrication Oil or Grease
Materials Zinc Plated Steel
Max OD of Body 2.267
Mounting Type Press & Swage Fit
Noise Rating 71 dBA (at 515 RPM)
Compared to 79 dBA for Commercial Unground bearings.
Prec/Semi/Non SEMI-PRECISION
Product Style Adapter Style
Rear Protection Rubber Seal
Speed Rating 360 SFM (with a 2.5" roller), 550 RPM
Tube Size 2 1/2
Tube Thickness 11g
 
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Quality Certifications &
Industry Standards
IATF 16949:2016
CEMA
FRANTZ Manufacturing Co.
3201 West LeFevre Road
Sterling, IL 61081

Phone: 815.625.7063
Fax: 815.625.1162
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