Introduction:

Rotary Reamer is designed for various reams in drilling operation. Especially it can perform the double functions of centralization and reaming when drilling in very abrasive formations. This is a versatile tool which can be used for different hole sizes ranging from 4-5/8＂to 26＂by selecting proper rollers and simply adjust the blocks. In addition, its service life can be extended by replacing new rollers when the old rollers are worn and become smaller.

The body is made of modified alloy steel, fully heat treated to 285～341 Brinell hardness and 54J minimum impact strength. Connections are phosphated, coated with thread dope and equipped with thread protectors, and are accord with API standard.

Three different types (T, F and B) of rollers are offered:

Type T:  For soft formations.

Type F:  For medium hard formations.

Type B:  For hard formations.

Specifications:

Item	Hole size	Roller Reamers
		Connection	Overall Length(mm)	Neck OD(mm)	Roller Dia. (mm)	Roller length(mm)
1	26〞	7-5/8H90	3000	254	178	400
2	17-1/2〞	7-5/8REG	2200	228	140	304
3	12-1/4〞	7-5/8REG	2000	228	100	300
4	8-1/2〞	4IF	1730	165	71	200

Note: When ordering or requesting for quote, please specify the detailed requirements.