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Carbitool Rounding Over Router Bit with Ball Bearing Guide T502B
Carbitool Rounding Over Router Bit with Ball Bearing Guide T502B - Image 2
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Carbitool Rounding Over Router Bit with Ball Bearing Guide T502B

$57.50

Carbitool T502B — 2-flute carbide-tipped rounding over bit with ball bearing guide. Produces a smooth 1/16" radius edge on hardwoods, softwoods and laminates. Convertible to beading bit with TB9 bearing. Cutting diameter 5/8" (15.88 mm), 1/4" shank. Product Group R613.

Availability: 1 in stock

Barcode: 9314350006096 Brand:
Carbitool

T502B Rounding Over Router Bit with Ball Bearing Guide Carbitool

Part No: T502B  |  Barcode: 9314350006096  |  Product Group: R613

The Carbitool T502B is a 2-flute carbide-tipped rounding over bit with ball bearing guide. Produces a smooth 1/16" (1.59 mm) radius edge on hardwoods, softwoods and laminates. Can be converted to a beading bit by swapping to a TB9 bearing. 1/4" shank.

2 Flute
Carbide Tipped
1/16" (1.59mm) Radius
1/4" Shank
Ball Bearing Guide
Convertible to Beading Bit

Compatible Materials

Hardwood
Softwood
MDF
Plywood
Laminates
Composites

Key Features & Benefits

  • Precision tool geometry — delivers extra-smooth, chatter-free cuts for a consistent edge profile every pass.
  • Ball bearing guide — rides against the workpiece face so no fence or edge guide is needed; ideal for curved and irregular edges.
  • Convertible profile — swap the included TB11 bearing for a TB9 bearing to expose the bottom corner of the cutter and produce a 1/16" edge bead instead of a rounded-over edge.
  • 2-flute carbide-tipped construction — long tool life and clean cuts across a wide range of timber species and sheet materials.
  • Compact 1/4" shank — fits standard handheld routers and router tables; ideal for smaller profile work.

When to Use This Bit

Choose the T502B when you need a fine 1/16" rounding over edge on furniture components, frames, shelving or trim work. The ball bearing guide makes it the right choice for curved workpieces or template-guided routing where a fence isn't practical. If you need a slightly larger radius, step up to the T504B (1/8"), T506B (3/16") or T508B (1/4") in this series. For a 1/2" shank version at the same radius, see T508B 1/2 and above.
Pro Tip: To convert the T502B into a beading bit, replace the standard TB11 bearing with a smaller TB9 bearing. This exposes the bottom corner of the cutter, producing a small bead detail on the lower edge of the profile — no second bit required.

Product Specifications

R613 Series — 2 Flute Rounding Over Bit with Ball Bearing Guide, Carbide Tipped
Part No. A (Cutting Dia.) inch A mm B (Cut Length) inch B mm C (Overall Length) inch C mm R Radius inch R mm Shank inch Shank mm Barcode
T502B ★ 5/8 15.88 5/16 7.94 1-7/8 47.63 1/16 1.59 1/4 6.35 9314350006096
T502MB 21/32 16.67 11/32 8.73 1-7/8 47.63 — 2.00 1/4 6.35 9314350014671
T504B 3/4 19.05 1/2 12.70 2 50.80 1/8 3.18 1/4 6.35 9314350006102
T504MB 13/16 20.64 7/16 11.11 2 50.80 — 4.00 1/4 6.35 9314350010253
T506B 7/8 22.22 15/32 11.91 2 50.80 3/16 4.76 1/4 6.35 9314350006119
T506B 1/2 7/8 22.22 15/32 11.91 2-1/2 63.50 3/16 4.76 1/2 12.70 9314350010710
T505MB 7/8 22.22 15/32 11.91 2 50.80 — 5.00 1/4 6.35 9314350010260
T506MB 31/32 24.61 33/64 13.10 2-3/16 55.56 — 6.00 1/4 6.35 9314350025745
T508B 1 25.40 1/2 12.70 2 50.80 1/4 6.35 1/4 6.35 9314350006126
T508B 1/2 1 25.40 1/2 12.70 2-1/2 63.50 1/4 6.35 1/2 12.70 9314350006133
T510B 1-1/8 28.58 1/2 12.70 2 50.80 5/16 7.94 1/4 6.35 9314350006140
T510B 1/2 1-1/8 28.58 1/2 12.70 2-5/8 66.68 5/16 7.94 1/2 12.70 9314350006157
T512B 1-1/4 31.75 5/8 15.88 2-1/4 57.15 3/8 9.53 1/4 6.35 9314350006164
T512B 1/2 1-1/4 31.75 5/8 15.88 2-5/8 66.68 3/8 9.53 1/2 12.70 9314350006171
T510MB 1/2 1-9/32 32.54 — 16.50 2-53/64 71.83 — 10.00 1/2 12.70 9314350025752
T512MB 1/2 1-7/16 36.51 — 18.00 2-57/64 73.42 — 12.00 1/2 12.70 9314350025769
T516B 1-1/2 38.10 3/4 19.05 2-1/4 57.15 1/2 12.70 1/4 6.35 9314350006188
T516B 1/2 1-1/2 38.10 3/4 19.05 2-3/4 69.85 1/2 12.70 1/2 12.70 9314350006195
T520B 1/2 1-3/4 44.45 7/8 22.23 3-1/4 82.55 5/8 15.88 1/2 12.70 9314350006201
T524B 1/2 2 50.80 1 25.40 3-1/4 82.55 3/4 19.05 1/2 12.70 9314350006218
T528B 1/2 2-1/4 57.15 1-5/64 27.38 3-1/2 88.90 7/8 22.23 1/2 12.70 9314350006225
T532B 1/2 2-1/2 63.50 1-1/4 31.75 3-5/8 92.08 1 25.40 1/2 12.70 9314350006232
T540B 1/2 3 76.20 1-15/32 37.31 3-3/4 95.25 1-1/4 31.80 1/2 12.70 9314350006249

★ You are viewing the highlighted variant. Other sizes in this series are also available.

Brand: Carbitool
Series: R613
Product Group: R613
Discount Group: Z0904
Material: Carbide Tipped
Flutes: 2
Shank: 1/4" (6.35 mm)
Radius: 1/16" (1.59 mm)
Replacement Bearing: TB11

Browse our full range of edge forming bits or explore all Carbitool router bits in Geelong.

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