[Diameter 50mm]

Item Description:

Diamond Mounted Point SPHERICAL CONCAVE Head Grinding Bit 20-50mm Grit 80 Jade Carving Tools

Diamond grinding bit Spherical Concave head, Jade carving tools

Head Shape: Spherical Concave Head

Quantity: Only 1 Piece

Please choose from the menu which option best qualifies your need. Available Head Diameter as below:

When you need to grind what diameter ball, please choose the same outer diameter of spherical concave head grinding bit

Such as: If you choose 20mm outer diameter of spherical concave head grinding bit, then you can grinding a 20mm outer diameter ball.

Outer Diameter|Internal Diameter|Shank Diameter|Total Length|Grit

20mm (3/4")|18mm|6-8mm|51mm|80

21mm(53/64" )|19mm|6-8mm|51mm|80

22mm(7/8")|20mm|6-8mm|51mm|80

23mm(close to7/8")|21mm|6-8mm|51mm|80

24mm(15/16" )|22mm|6-8mm|51mm|80

25mm (close to 1" )|23mm|6-8mm|51mm|80

26mm(1-1/32" )|24mm|6-8mm|51mm|80

27mm(1-1/16" )|25mm|6-8mm|51mm|80

28mm(1-1/8" )|26mm|6-8mm|51mm|80

29mm(1-5/32" )|27mm|6-8mm|51mm|80

30mm (1-3/16")|28mm|6-8mm|51mm|80

35mm (1-3/8")|33mm|6-8mm|51mm|80

36mm (1-7/16")|34mm|6-8mm|51mm|80

38mm (1-1/2")|36mm|6-8mm|51mm|80

40mm (1-9/16")|38mm|6-8mm|51mm|80

42mm (1-21/32")|40mm|6-8mm|51mm|80

45mm (1-3/4")|43mm|6-8mm|51mm|80

48mm (1-7/8")|46mm|6-8mm|51mm|80

50mm (close to 2")|48mm|6-8mm|51mm|80

The concave arc is not a semicircle (shallower than a semicircle)

Product use:

Apply to jade carving, stone carving, bone carving, glass carving etc. Especially suitable for forming and grinding spherical bead, etc.

Used for sculpturing, precision grinding in precious stone, ceramic, glass, many the abrasive materials

The speed of 2000-6000 r/min

The Diamond grinding head can be installed on the Bench drilling machine, hand electric drill (not included here). Never use