Rock Bits

Supplied either as steel tooth bits or as tungsten carbide insert bits to suit various rock types. Regular fluid circulation, jet or air-blast types are available. Large diam¬eter refurbished rock bits may also available at reduced prices.

Description

Supplied either as steel tooth bits or as tungsten carbide insert bits to suit various rock types. Regular fluid circulation, jet or air-blast types are available. Large diameter refurbished rock bits may also available at reduced prices.

Rock bit size and connection type
Diameter

Inches

API Reg.

Pin Size

Diameter

Inches

API Reg.

Pin Size

27/8 ʺ N rod 63/– 67/8 ʺ 31/2 ʺ
27/– 3 ʺ N rod 73/8 ʺ 31/2 ʺ
31/– 31/4 ʺ N rod 75/8 ʺ 41/2 ʺ
31/– 35/8 ʺ 23/8 ʺ 77/– 8 ʺ 41/2 ʺ
33/4 ʺ 23/8 ʺ 81/– 85/8 ʺ 41/2 ʺ
37/– 4 ʺ 23/8 ʺ 83/4 ʺ 41/2 ʺ
41/– 43/8 ʺ 23/8 ʺ 9 ʺ 41/2 ʺ
41/– 45/8 ʺ 23/8 ʺ 95/8 ʺ 65/8 ʺ
43/– 47/8 ʺ 27/8 ʺ 97/8 ʺ 65/8 ʺ
27/8 ʺ 105/8 ʺ 65/8 ʺ
51/– 51/4 ʺ 27/8 ʺ 11 ʺ 65/8 ʺ
51/2 ʺ 31/2 121/4 65/8 ʺ
55/– 53/4 ʺ 31/2 133/4 ʺ 65/8 ʺ
57/8 ʺ 31/2 143/4 ʺ 65/8 ʺ
6 – 61/8ʺ 31/2 16″ 65/8 ʺ
61/4 ʺ 31/2 171/2 ʺ 65/8 ʺ