Carbitool
T920B 1/2 Chamfering Router Bit with Ball Bearing Guide Carbitool
Part No: T920B 1/2 | Barcode: 9314350007031 | Product Group: R638–R641
The Carbitool T920B 1/2 is a 2-flute carbide-tipped chamfering bit with ball bearing guide, cutting a 45° (90° included) chamfer. Produces clean angled edges on timber and sheet materials, suitable for decorative chamfering, assembly joints and sign work. 1/2" shank.
2 Flute
Carbide Tipped
45° Chamfer
1/2" (12.70mm) Shank
Ball Bearing Guide
Compatible Materials
Hardwood
Softwood
MDF
Plywood
Laminates
Sign Blanks
Key Features & Benefits
- Precise 45° chamfer angle — produces a consistent angled edge profile for decorative chamfering, breaking sharp edges or creating assembly joints.
- Ball bearing guide — rides against the workpiece for consistent depth without a fence; handles both straight and curved edges.
- Wide angle range available — the chamfer series covers 5° through to 80° from vertical, with most bits adjustable to achieve custom intermediate angles.
- 2-flute carbide-tipped construction — clean, consistent cuts with long tool life across hardwoods, softwoods and sheet materials.
- 1/2" shank — suits routers and router tables accepting this shank size.
When to Use This Bit
The T920B 1/2 suits decorative edge chamfering, breaking sharp corners, creating mitre-style joins, and sign or lettering work. The ball bearing guide makes it versatile on both straight runs and curved templates. Most bits in this series can be adjusted to produce a custom angle between steps — check the full range in the table below and choose the angle closest to your requirement.
Pro Tip: Adjust the router bit height to modify how much of the chamfer face contacts the workpiece — this lets you customise the depth of the chamfer without changing bits.
| Part No. | Angle | A (Cutting Dia.) inch | A mm | B1 (Cut Length) inch | B1 mm | B2 mm | C (Overall Length) inch | C mm | Shank inch | Shank mm | Barcode |
|---|---|---|---|---|---|---|---|---|---|---|---|
| T8105B 1/2 | 5° from vertical | 47/64 | 18.65 | 1-27/64 | 36.11 | — | 36.00 | 3-5/8 | 92.08 | 1/2 | 9314350020146 |
| T8110B 1/2 | 10° from vertical | 63/64 | 25.00 | 1-7/16 | 36.51 | — | 36.00 | 3-5/8 | 92.08 | 1/2 | 9314350020153 |
| T8122B | 22.5° from vertical | 1 | 25.40 | 21/32 | 16.67 | 39/64 | 15.56 | 2-1/4 | 57.15 | 1/4 | 9314350006973 |
| T8122B 1/2 | 22.5° from vertical | 1 | 25.40 | 21/32 | 16.67 | 39/64 | 15.56 | 2-3/4 | 69.85 | 1/2 | 9314350006980 |
| TX8122B 1/2 | 22.5° from vertical | — | 36.07 | 1-1/4 | 31.75 | — | 28.40 | 3-1/4 | 82.55 | 1/2 | 9314350009325 |
| T8130B | 30° from vertical | 1-1/8 | 28.58 | 43/64 | 17.07 | 35/64 | 13.89 | 2-1/4 | 57.15 | 1/4 | 9314350006997 |
| T8130B 1/2 | 30° from vertical | 1-1/8 | 28.58 | 43/64 | 17.07 | 35/64 | 13.89 | 2-3/4 | 69.85 | 1/2 | 9314350007000 |
| T916B | 45° from vertical | 1-3/8 | 34.93 | 5/8 | 15.88 | 29/64 | 11.51 | 2-1/4 | 57.15 | 1/4 | 9314350007017 |
| T916B 1/2 | 45° from vertical | 1-3/8 | 34.93 | 5/8 | 15.88 | 29/64 | 11.51 | 2-3/4 | 69.85 | 1/2 | 9314350007024 |
| T920B 1/2 ★ | 45° from vertical | 1-7/8 | 47.63 | 1 | 25.40 | 11/16 | 17.47 | 2-3/4 | 69.85 | 1/2 | 9314350007031 |
| T924B 1/2 | 45° from vertical | 2-1/4 | 57.15 | 1-1/4 | 31.75 | — | 22.50 | 3-1/4 | 82.55 | 1/2 | 9314350007048 |
| T8165B | 65° from vertical | — | 40.13 | 5/8 | 15.88 | 1/4 | 6.35 | 2-3/32 | 53.18 | 1/4 | 9314350010772 |
| T8165B 1/2 | 65° from vertical | — | 40.13 | 5/8 | 15.88 | 1/4 | 6.35 | 2-1/2 | 63.50 | 1/2 | 9314350010789 |
| TX8165B 1/2 | 65° from vertical | — | 74.93 | 1-3/8 | 34.93 | — | 14.50 | 2-3/4 | 69.85 | 1/2 | 9314350010758 |
| T8180B | 80° from vertical | — | 40.13 | 9/16 | 14.29 | 3/32 | 2.38 | 2 | 50.80 | 1/4 | 9314350010796 |
| T8180B 1/2 | 80° from vertical | — | 40.13 | 9/16 | 14.29 | 3/32 | 2.38 | 2-1/2 | 63.50 | 1/2 | 9314350010802 |
| TX8180B 1/2 | 80° from vertical | — | 74.93 | 1-1/4 | 31.75 | 7/32 | 5.56 | 2-9/16 | 65.09 | 1/2 | 9314350010765 |
★ You are viewing the highlighted variant. Other sizes in this series are also available.
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