Multi-Shape Coated Rotary Carbide Burr Kit, 1/4 Shank for Die Grinders

Rainbow PVD coated burr kit in six shapes on 1/4 shanks – a coated head for every contour, in one kit.

Design and Construction — a VPOINT tungsten carbide burr bit in the standard SA–SM head-code system, sized for steel / stainless welds and similar work. YG8 carbide at HRA 89–91; die-grinder reference speeds are in the performance table below, with the flute-style guidance in the FAQ. ISO 9001 production, batch-verified, custom sizes from drawings.

Multi-Shape Coated Rotary Carbide Burr Kit, 1/4 Shank for Die Grinders - gallery view 1
Multi-Shape Coated Rotary Carbide Burr Kit, 1/4 Shank for Die Grinders - gallery view 2
Multi-Shape Coated Rotary Carbide Burr Kit, 1/4 Shank for Die Grinders - gallery view 3
Multi-Shape Coated Rotary Carbide Burr Kit, 1/4 Shank for Die Grinders - gallery view 4

Design and Construction

A six-shape kit where every head carries a rainbow multi-layer PVD coating: cylinder, cylinder ball-nose, ball, tree, cone and flame. The coating sits in the 3,000 HV class and lowers friction so chips wash off instead of welding to the flutes.

How It Works

Coated flutes stay cleaner through sticky alloys and long passes; shapes cover the contour map so one kit handles flat, concave, corner and weld work.

Applications

Stainless fabrication, mixed-alloy maintenance, visible-finish work and detail shaping.

Field Cases

  • Stainless fabricator: the coated kit stopped end-of-shift chip-welding cleanup on 304 seams.
  • Maintenance team: six shapes covered a pump-rebuild job without opening a second case.
  • Show-finish shop: rainbow heads are kept for visible welds – finish plus identification.

Performance Data

Metric Value / Observation
Coating class Multi-layer PVD nitride, about 3,000-3,500 HV (published coating data)
Friction effect Lower chip welding on stainless and low-carbon steel
Set coverage Six shapes, 1/4 shank throughout
Identification Distinct colour separates detail heads from roughing heads

Suitable Materials

Stainless steel, low-carbon steel, cast iron and non-ferrous metals.

Material Comparison: Coated Kit vs Uncoated Kit Across Six Shapes

What the coating adds shape by shape – typical industry data:

Shape Coated (this kit) Uncoated
Cylinder Cleaner passes on mild steel Loads sooner on gummy plate
Ball nose Stainless blending without smear Smear builds on 304
Tree Long weld runs stay sharp Edge rounds faster
Cone Countersink blends stay crisp Edge loading
Flame Seam dressing with less heat colour Heat marks on thin sections

Delivery Scope

Six coated burrs in kit packing; shapes can be mixed per order.

Why Choose VPOINT

In-house coating means the kit geometry and the coating were chosen together.

Precision & Quality Control

Coating adhesion sampled per batch alongside geometry checks.

Specifications

Kit composition:

Item Specification
Shapes 6 (cylinder to flame)
Shank 6 mm (1/4″)
Coating Rainbow multi-layer PVD
Head material YG carbide

Frequently Asked Questions

Which head code do I need?

+The SA–SM code defines the contour: SA cylinder, SC ball-nose end, SD ball, SF tree-pointed, SH tree-radius, SL tree-tapered, SM cone. Match the contour to the cavity or corner you are shaping.

Can I use one burr across different metals?

+Yes with the right flute style — double-cut for steel and iron, Aluma-cut for aluminium and soft non-ferrous. Swapping styles between jobs keeps edges clean.

Are custom shanks or head sizes available?

+Yes — non-standard head diameters, shank sizes and logo marking are produced to order from drawings.

Is the coating only cosmetic?

No – it is a multi-layer PVD nitride in the 3,000 HV class.

Which shape for welds?

Flame for seams, tree for crown blending.

Can I buy half-coated kits?

Yes – mixed coated/uncoated kits are common wholesale orders.

Aluminium?

Use the aluminum-cut option; the coating helps most on steels.

Recoat after regrind?

Possible on request for volume users.

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Sources & standards: ISO 9001 quality management · UNSPSC commodity codes · eClass product classification