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UNGROUND (non-precision) and SEMI-PRECISION


Unground Bearing Numbering System

Class/Type Bore X OD Seals
UG ~ Unground
UGF ~ Unground, Flanged OD
UGFH ~ Unground, Flanged, Hex Bore
UGFS ~ Unground, Flanged, Extended
Inner Race w/Set Screws
UGT ~ Unground, Thrust Bearing
SP ~ Semi-Precision
SR ~ Snap Ring		 Bore (Inches) X OD (Inches) 2RS—2 Rubber Seals
ZZ—Two metal Shields

USDI Ungroung Bearings & Semi-Precision Bearings —ROUND BORE—FLANGED/SNAP RINGS

USDI P/N Interchange Interchange Bore X OD Seals
UGF.1875X.625 AF1220 3/16 X 5/8
UGF.250X.500 1/4 X 1/2
UGF.250X.6875 F-150 AF1622 1/4 X 11/16
UGF.250X.750 F-155 AF1624 1/4 X 3/4
UGF.250X.8125 F-160 1/4 X 13/16
UGF.250X.875 AF1628 1/4 X 7/8
UGF.250X.9062 F-175-1 AF1629 1/4 X 29/32
UGF.3125X.875 F-165 AF2028 5/16 X 7/8
UGF.3125X.9062 F-175-2 AF2029 5/16 X 29/32
UGF.3125X1.0625 AF2034 5/16 X 1-1/16
UGF.375X.9062 F-175-3 AF2429 3/8 X 29/32
UGF.375X.875 AF2428 3/8 X 7/8
UGF.375X1.00 F-225 3/8 X 1
UGF.375X1.0625 F-250-2 AF2434 3/8 X 1-1/16
UGF.375X1.125 F-300-19 AF2436 3/8 X 1-1/8
UGF.375X1.125-2RS 36F24PP TW1 3/8 X 1-1/8 2RS
UGF.375X1.375 F-350-11 AF2444 3/8 X 1-3/8
UGF.4375X.9062 F-175-4 AF2829 7/16 X 29/32
UGF.4375X1.0625 F-250 AF2834 7/16 X 1-1/16
UGF.500X1.125 F-300 AF3236 1/2 X 1-1/8
UGF.500X1.125-2RS 36F32PP TW2 1/2 X 1-1/8 2RS
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