Corner Rounding Router Bits with Ball Bearing Guide

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RDD1BdLFluteBall BearingDescriptionReplacement BearingMax RPMBrandTool NoOur PriceWish ListReady To Buy
1/165/163/165/161/41-13/162LowerMini 3/16 Dia. Ball Bearing47775 (Mini)--
Amana Tool MRR108 Miniature 1/16 Radius Corner Rounding with 3/16 Dia Ball Bearing x 5/16 Dia x 5/16 Cut Height x 1/4 Inch Shank Carbide Tipped Router BitMore infoAmana ToolMRR108$43.00$32.25
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1/165/81/25/161/41-3/42Lower-47706--
Amana Tool 49492 Carbide Tipped Corner Rounding 1/16 R x 5/8 D x 5/16 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49492$30.80$23.10
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1/165/81/25/161/22-1/42Lower-47706--
Amana Tool 49494 Carbide Tipped Corner Rounding 1/16 R x 5/8 D x 5/16 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49494$30.80$23.10
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3/323/83/163/81/41-13/162LowerMini 3/16 Dia. Ball Bearing47775 (Mini)--
Amana Tool MR0110 Miniature 3/32 R Corner Rounding with 3/16 D Ball Bearing x 3/8 D x 3/8 CH x 1/4 Inch SHK Carbide Tipped Router BitMore infoAmana ToolMR0110$43.00$32.25
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1/87/163/163/81/41-13/162LowerMini 3/16 Dia. Ball Bearing47775 (Mini)--
Amana Tool MR0112 Miniature 1/8 R Corner Rounding with 3/16 D Ball Bearing x 7/16 D x 3/8 CH x 1/4 Inch SHK Carbide Tipped Router BitMore infoAmana ToolMR0112$43.00$32.25
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1/83/41/23/81/422Lower-47706--
Amana Tool 49496 Carbide Tipped Corner Rounding 1/8 R x 3/4 D x 3/8 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49496$32.30$24.23
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1/83/41/23/81/22-5/162Lower-47706--
Amana Tool 49498 Carbide Tipped Corner Rounding 1/8 R x 3/4 D x 3/8 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49498$32.30$24.23
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1/87/85/87/161/41-15/164Lower*4 Flute Design**47718 Corner Round / 47706 Beading--
Amana Tool 49544 Carbide Tipped 4 Flute Corner Rounding/Beading 1/8 R x 7/8 D x 7/16 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49544$55.10$41.33
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5/321/23/163/81/41-13/162LowerMini 3/16 Dia. Ball Bearing47775 (Mini)--
Amana Tool MR0114 Miniature 5/32 R Corner Rounding with 3/16 D Ball Bearing x 1/2 D x 3/8 CH x 1/4 Inch SHK Carbide Tipped Router BitMore infoAmana ToolMR0114$44.35$33.26
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5/3213/161/23/81/22-1/42Lower-47706--
Amana Tool 49501 Carbide Tipped Corner Rounding 5/32 R x 13/16 D x 3/8 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49501$45.85$34.39
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5/3213/161/23/81/422Lower-47706--
Amana Tool 49499 Carbide Tipped Corner Rounding 5/32 R x 13/16 D x 3/8 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49499$34.20$25.65
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3/167/81/21/21/422Lower-47706--
Amana Tool 49500 Carbide Tipped Corner Rounding 3/16 R x 7/8 D x 1/2 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49500$34.20$25.65
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3/167/81/21/21/22-7/162Lower-47706--
Amana Tool 49502 Carbide Tipped Corner Rounding 3/16 R x 7/8 D x 1/2 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49502$34.20$25.65
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3/1615/81/21/424Lower*4 Flute Design**47718 Corner Round / 47706 Beading--
Amana Tool 49546 Carbide Tipped 4 Flute Corner Rounding/Beading 3/16 R x 1 D x 1/2 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49546$56.85$42.64
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1/43/41/41/21/41-7/82Lower1/4 Dia. Ball Bearing47723--
Amana Tool 49505 Carbide Tipped Corner Rounding 1/4 Radius x 3/4 Dia x 1/2 Cut Height x 1/4 Shank with 1/4 Inch Dia Lower Ball Bearing Router BitMore infoAmana Tool49505$47.80$35.85
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1/411/21/21/422Lower-47706--
Amana Tool 49504 Carbide Tipped Corner Rounding 1/4 R x 1 Inch D x 1/2 CH x 1/4 SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49504$34.35$25.76
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1/411/163/1613/321/41-7/82LowerMini 3/16 Dia. Ball Bearing47775 (Mini)--
Amana Tool MRR112 Miniature 1/4 Radius Corner Rounding with 3/16 Dia Ball Bearing x 11/16 Dia x 13/32 Cut Height x 1/4 Inch Shank Carbide Tipped Router BitMore infoAmana ToolMRR112$52.75$39.56
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1/411/21/21/42-1/162LowerPolycrystalline Diamond (PCD) Tipped47706-18,000
Amana Tool DRB-504 Polycrystalline Diamond (PCD) Corner Rounding 1/4 Radius x 1 Inch Dia x 1/2 Cut Height x 1/4 Shank w/ Lower Ball Bearing Router BitMore infoAmana ToolDRB-504$173.25$155.93
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1/41-1/21/42-1/162LowerRepl. Knives: RCK-272(2)4770645°-
Amana Tool RC-49504 In-Tech Insert Corner Round 1/4 R x 1 Inch D x 1/2 CH x 1/4 SHK Router BitMore infoAmana ToolRC-49504$52.50$39.38
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1/411/21/21/22-7/162Lower-47706--
Amana Tool 49506 Carbide Tipped Corner Rounding 1/4 R x 1 Inch D x 1/2 CH x 1/2 SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49506$34.35$25.76
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1/41-1/85/87/161/42-9/164Lower*4 Flute Design**47712 Corner Round / 47701 Beading--
Amana Tool 49547 Carbide Tipped 4 Flute Corner Rounding/Beading 1/4 R x 1-1/8 D x 7/16 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49547$56.85$42.64
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1/41-1/85/87/161/22-9/164Lower*4 Flute Design**47712 Corner Round / 47701Beading--
Amana Tool 49541 Carbide Tipped 4 Flute Corner Rounding/Beading 1/4 R x 1-1/8 D x 7/16 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49541$56.85$42.64
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5/161-1/81/21/21/42-1/162Lower-47706--
Amana Tool 49508 Carbide Tipped Corner Rounding 5/16 R x 1-1/8 D x 1/2 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49508$34.35$25.76
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5/161-1/81/21/21/22-7/162Lower-47706--
Amana Tool 49510 Carbide Tipped Corner Rounding 5/16 R x 1-1/8 D x 1/2 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49510$34.35$25.76
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3/811/45/81/422Lower1/4 Dia. Ball Bearing47723--
Amana Tool 49511 Carbide Tipped Corner Rounding 3/8 Radius x 1 Dia x 5/8 Cut Height x 1/4 Inch Shank w/ Lower Ball Bearing Router BitMore infoAmana Tool49511$50.00$37.50
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3/81-1/83/85/81/42-1/82Lower3/8 Dia. Ball Bearing47704--
Amana Tool 49531 Carbide Tipped Corner Rounding 3/8 Radius x 1-1/8 Dia x 5/8 Cut Height x 1/4 Shank with 3/8 Inch Dia Lower Ball Bearing Router BitMore infoAmana Tool49531$50.00$37.50
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3/81-1/41/25/81/42-3/162Lower-47706--
Amana Tool 49512 Carbide Tipped Corner Rounding 3/8 R x 1-1/4 D x 5/8 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49512$38.55$28.91
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3/81-1/41/25/81/22-9/162Lower-47706--
Amana Tool 49514 Carbide Tipped Corner Rounding 3/8 R x 1-1/4 D x 5/8 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49514$38.55$28.91
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3/81-3/85/85/81/42-11/164Lower*4 Flute Design**47712 Corner Round / 47701 Beading--
Amana Tool 49548 Carbide Tipped 4 Flute Corner Rounding/Beading 3/8 R x 1-3/8 D x 5/8 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49548$63.45$47.59
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3/81-3/85/85/81/22-11/164Lower*4 Flute Design**47712 Corner Round / 47701 Beading--
Amana Tool 49543 Carbide Tipped 4 Flute Corner Rounding/Beading 3/8 R x 1-3/8 D x 5/8 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49543$62.35$46.76
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7/161-3/81/25/81/22-9/162Lower-47706--
Amana Tool 49515 Carbide Tipped Corner Rounding 7/16 R x 1-3/8 D x 5/8 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49515$82.70$62.03
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1/21-1/21/23/41/42-1/42Lower-47706--
Amana Tool 49516 Carbide Tipped Corner Rounding 1/2 R x 1-1/2 D x 3/4 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49516$45.25$33.94
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1/21-1/21/23/41/22-5/82Lower-47706--
Amana Tool 49518 Carbide Tipped Corner Rounding 1/2 R x 1-1/2 D x 3/4 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49518$45.25$33.94
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1/21-5/85/811/161/42-3/44Lower*4 Flute Design**47712 Corner Round / 47701 Beading--
Amana Tool 49549 Carbide Tipped 4 Flute Corner Rounding/Beading 1/2 R x 1-5/8 D x 11/16 CH x 1/4 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49549$72.25$54.19
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1/21-5/85/811/161/22-3/44Lower*4 Flute Design**47712 Corner Round / 47701 Beading--
Amana Tool 49545 Carbide Tipped 4 Flute Corner Rounding/Beading 1/2 R x 1-5/8 D x 11/16 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49545$72.25$54.19
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9/161-5/81/23/41/22-5/82Lower-47706--
Amana Tool 49517 Carbide Tipped Corner Rounding 9/16 R x 1-5/8 D x 3/4 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49517$83.70$62.78
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5/81-3/41/27/81/22-3/42Lower-47706--
Amana Tool 49519 Carbide Tipped Corner Rounding 5/8 R x 1-3/4 D x 7/8 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49519$68.15$51.11
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3/421/211/22-7/82Lower-47706--
Amana Tool 49520 Carbide Tipped Corner Rounding 3/4 R x 2 Inch D x 1 Inch CH x 1/2 SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49520$75.10$56.33
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7/82-1/41/21-1/41/23-1/162Lower-47706--
Amana Tool 49521 Carbide Tipped Corner Rounding 7/8 R x 2-1/4 D x 1-1/4 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49521$146.95$110.21
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12-1/21/21-1/41/23-3/162Lower-47706--
Amana Tool 49522 Carbide Tipped Corner Rounding 1 R x 2-1/2 D x 1-1/4 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49522$146.95$110.21
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1-1/82-3/41/21-3/81/23-3/42Lower-47706--
Amana Tool 49523 Carbide Tipped Corner Rounding 1-1/8 R x 2-3/4 D x 1-3/8 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49523$157.45$118.09
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1-1/431/21-1/21/23-7/82Lower-47706--
Amana Tool 49524 Carbide Tipped Corner Rounding 1-1/4 R x 3 Inch D x 1-1/2 CH x 1/2 SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49524$178.45$133.84
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1-1/23-1/21/21-3/41/24-1/82Lower-47706--
Amana Tool 49526 Carbide Tipped Corner Rounding 1-1/2 R x 3-1/2 D x 1-3/4 CH x 1/2 Inch SHK w/ Lower Ball Bearing Router BitMore infoAmana Tool49526$220.45$165.34
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* 4 flute design for super-smooth finish.

**Use replacement bearing 47712 and 47718 for corner rounding or 47701 and 47706 for beading.

Note: Bits with 1" and above diameter are not guaranteed due extreme diameters. For best results using a large diameter bit, it is best to first use a smaller radius bit or chamfer the material prior to using the larger radius bits. Tool life will be prolonged and a smoother finish will result.

#MR0110, MR0112 , MRR112 & MR0114 are Corner Round Bits with Miniature Ball Bearing Guides.

DRB-504 Replacement Parts: ball bearing: 47706; screw: 67096; washers: 67082

Max RPM:
49519 = 28,000 
49520 = 22,000 
49521 = 22,000 
49522 = 18,000 
49523 = 16,000 
49524 = 16,000 
49526 = 15,000 

2 Flute & 4 Flute
The router bits found on this page include the miniature 3/16" and 1/4" diameter ball bearings for routing tight spaces, the In-Tech™ insert replacement knife series, diamond tipped (PCD) bits as well as the standard 1/2" diameter ball bearings.

The basic edge-forming bit, the corner-rounding bit rounds an edge to a given radius. The tool is shouldered to cut a fillet. The cut can be used to ease edges, as a simple profile, or as a part of a complex one. Also known as roundover, rounding over, and quarter-round. If a smaller pilot bearing is used, a second shoulder can be produced, in effect making the bit a beading bit.

Tool #DRB-504 is excellent for composite panels, fiberglass, fiberglass PCB board, fiberglass reinforced composites, lightweight composites, custom composite materials, fiber-reinforced urethane and fiber-reinforced structural foam floors.


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