--- --- APWORKSHOP.COM.AU REPLACEABLE INSERT BITS FLUSH TRIMMING Note- see Insert Blades page for details about the Inserts for these bits Part # Description D mm D inch B mm B inch L mm L inch d mm d inch Insert A$ R 1912 BB REPLACEABLE FLUSH TRIM D/BRG 1/4 19 .747 12 .4716 61 2.397 6.35 1/4 F 93.50 R 1912 BB 1/2 REPLACEABLE FLUSH TRIM D/BRG 1/2 19 .747 12 .4716 69 2.712 12.7 1/2 F 93.50 R 1930 BB 1/2 REPLACEABLE FLUSH TRIM D/BRG 1/2 19 .747 30 1.179 93 3.655 12.7 1/2 B 104.50 R 1940 BB 1/2 REPLACEABLE FLUSH TRIM D/BRG 1/2 19 .747 40 1.572 105 4.127 12.7 1/2 C 107.80 PART CODES: B= Ball Bearing Guide, BB= Double Ball Bearing Guide, E/C = End Cutting, S = Single Flute, 1/2= 1/2 inch (12.7 mm) shank diameter, 16= 16 mm shank diameter (if no suffix then shank is 6.35mm = 1/4 inch). DESCRIPTION ABBREVIATIONS: W/BRG= With bearing, D/BRG= Double bearing ![]()
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Router Bits
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DOUBLE BEARING ![]()

R 1912 BB & R1912 BB 1/21, 2 & 3-HOLE INSERT BLADE
TWO FLUTES WITH TWO BALL BEARING GUIDES TB 5
Shank: 1/2 inch (12.7 mm) is shown in the part number, otherwise is 1/4 inch (6.35 mm )

R 1940 BB 1/2