Bottom Bearing Flush Trim Router Bits With Inserts

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On October 1, 2026
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Design and Construction

The bottom-bearing flush trim router bit with inserts pairs a 40Cr chrome-molybdenum steel body with replaceable tungsten carbide insert knives. Tungsten carbide cutter knives on an alloy steel shaft, 2 blades; the specifications table states the workpiece range (solid wood, soft wood, hard wood, particle board, MDF, plywood, compact panel, laminate, acrylic) and the machines (CNC router, handheld router, table-mounted and bench-top routers).

How It Works

The insert knives seat in precision pockets and present ground carbide edges to the workpiece. When an edge dulls, the knife is turned to its second edge or swapped in minutes — the body, its shank and its concentricity stay on the spindle, and the next cut lands at the same dimension.

Applications

  • Bottom-bearing flush trimming
  • Edge banding overhang trim
  • Template trimming
  • Panel edge finishing

Suitable Materials

  • Melamine-faced particleboard
  • MDF and laminated boards
  • Plywood and veneered panels
  • Solid wood

Suitable materials: melamine-faced particleboard, MDF, laminate HPL, veneered plywood, solid hardwood

The bottom bearing rides the template while the carbide knives keep the edge flush.

System Comparison: Replaceable Insert vs. Solid Knife

Insert bits keep the steel body in service and replace only the cutting edges. For production routing and panel work, this is usually the lower-cost way to hold edge quality.

Property Replaceable Insert Knife (This Tool) Solid Profile Knife
Edge replacement Swap the worn insert only; the steel body stays in service Regrind or replace the complete tool
Body material 40Cr chrome-molybdenum steel body, reused across insert changes Whole tool consumed as the edge wears
Downtime per edge change Minutes — index or swap the insert Send out for regrinding or buy a new tool
Profile changes Fit a different insert geometry to the same body New tool required per profile
Edge condition Fresh edge on every change; consistent cut quality Edge quality drifts between regrinds
Best suited for Production cutterheads with repeat profiles One-off profiles and low-volume work

Solid knives remain the better choice for one-off profiles and very low volumes.

Delivery Scope

Single bit. Order by product code with the diameter, shank, cutting length and tooth count stated in the specifications table below.

Why Choose VPOINT

  • One-year warranty on every cutter — defects in material or workmanship are covered for 12 months from delivery.
  • Custom tooling — diameters, bores, cutting widths and tooth counts built to your drawing or sample.
  • Non-standard fabrication — profiles and sizes outside the standard catalogue, including profile restoration.
  • Resharpening service — cutters return to service after regrinding at a fraction of new-tool cost.
  • Factory-direct since 2008 — ISO 9001 manufacturing in Sichuan and Dongguan, China; 40Cr chrome-molybdenum steel bodies; no trading intermediaries.

Send a drawing, a sample or a worn tool, and our engineering team will quote the exact specification you need.

Precision & Quality Control

Every cutter is inspected at micron level before shipment. Cutting diameter (ØD), bore (Ød), cutting width/height (B/H) and overall dimensions are measured against the values listed in the specifications table, and cutting edge runout and concentricity are verified on the assembled tool.

Tools measuring outside tolerance are reground or scrapped — they do not ship. Inspection is performed under our ISO 9001 quality system, with batch records retained for traceability.

Specifications

Product Name Insert Carbide Flush Trim Router Bit with Bottom Bearing
Cutter Material Tungsten Carbide
Shaft  Material Alloy Steel
Blade Quantity 2 pieces
Workpiece Used on solid wood, soft wood, hard wood, particle board, MDF, plywood compact panel, paminate, acrylic, plastic, PVC and etc.
Machines Fit for CNC router, handheld router, table-mounted portable router, fixed base router, bench top router table and other machines.
More Types V-Groove Router Bit, Slab Flattening Router Bit, Spiral Flush Trim Router Bit, Other
Product Code Product Specifications Diameter Shank Cutting
 Length		 Tooth shape Alloy Insert Specifications
D d L T 
VP030-01 D19*d6*L12*2T 19 6 12   12*12*1.5*35°
VP030-02 D19*d6.35*L12*2T 19 6.35 12   12*12*1.5*35°
VP030-03 D19*d6.35*L20*2T 19 6.35 20   20*12*1.5-35°
VP030-04 D19*d12.7*L20*2T 19 12.7 20   20*12*1.5-35°
VP030-05 D19*d12.7*L30*2T 19 12.7 30   30*12*1.5-35°
VP030-06 D19*d12.7*L40*2T 19 12.7 40   40*12*1.5-35°
VP030-07 D19*d12.7*L50*2T 19 12.7 50   50*12*1.5-35°
VP030-08 D19*d12.7*L60*2T 19 12.7 60   60*12*1.5-35°
VP030-09 D19*d12*L20*2T 19 12 20   20*12*1.5-35°
VP030-10 D19*d12*L30*2T 19 12 30   30*12*1.5-35°
VP030-11 D19*d12*L40*2T 19 12 40   40*12*1.5-35°
VP030-12 D19*d12*L50*2T 19 12 50   50*12*1.5-35°
VP030-13 D19*d12*L60*2T 19 12 60   60*12*1.5-35°
VP030-14 D19*d8*L20*2T 19 8 20   20*12*1.5-35°
VP030-15 D19*d8*L30*2T 19 8 30   30*12*1.5-35°
VP030-16 D19*d8*L40*2T 19 8 40   40*12*1.5-35°
VP030-17 D19*d8*L50*2T 19 8 50   50*12*1.5-35°
VP030-18 D19*d8*L60*2T 19 8 60   60*12*1.5-35°

Key words: bottom bearing trim bit, insert flush trim bit, carbide trim router, bearing guided trim

Newer Double Bearings Flush Trim Router Bit with Carbide Inserts
Older VPOINT 90 Degree V Groove Router Bits With Carbide Inserts Knives

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