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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 (CON'T)

USDI P/N Interchange Interchange Bore X OD Seals
SPSR.500X1.125-2RS 1/2 X 1-1/8 2RS
UGF.500X1.1875 F-310 AF3238 1/2 X 1-3/16
UGF.500X1.250 AF3240 1/2 X 1-1/4
UGF.500X1.375 F-350-12 AF3244 1/2 X 1-3/8
UGF.500X1.375-2RS 44F32PP TW6 1/2 X 1-3/8 2RS
SPSR.500X1.375-2RS 1/2 X 1-3/8 2RS
UGF.500X1.500 AF3248 1/2 X 1-1/2
UGF.500X1.500x(ext.inner) 32703-1 1/2 x 1-1/2
UGF.500X1.500-2RS 48F32PP TW8 1/2 X 1-1/2 2RS
UGF.500X1.5625 F-550 AF3250 1/2 X 1-9/16
UGF.500X1.625 AF3252 1/2 X 1-5/8
UGF.500X1.750 AF3256 1/2 X 1-3/4
UGF.500X1.875 AF3260 1/2 X 1-3/4
UGF.50X2.125 AF3268 1/2 X 2-1/8
UGF.5625X1.250 F-325 9/16 X 1-1/4
UGF.5625X1.375 AF3644 9/16 X 1.3/8
SPSR.5625X1.375-2RS 9/16 X 1-3/8 2RS
UGF.625X1.500-2RS AF4048 9/16 X 1-1/2 2RS
UGF.625X1.875 F-850 5/8 X 1-7/8
UGF.6875X1.500 F-500 AF4448 11/16 X 1-1/2
UGF.750X1.375-2RS F-350-89 AF4844 3/4 X 1-3/8 2RS
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