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The Roller Reamer is designed for various reaming operation but particularly for stabilization purposes when drilling in very abrasive formations. It will fit hole sizes ranging from 6" to 28".In addition, each body by simple adjustment of blocks and proper selection of cutters, will suit a wide range of hole sizes.
Three different types (T,F and B) of cutters are offered:
Type T: Milled, machined with hardfaced sharp teeth for soft formations.
Type F: Milled, machined with hardfaced flat teeth, for medium hard formations.
Type B: Equipped with pressed-in tungsten carbide buttons, for hard formations.

Hole Size	Connection	Fishing O.D.	Cutter Dia.	Cutter Length	OAL
inch(mm)	inch(mm)	inch(mm)	inch(mm)	inch(mm)	inch(mm)
28''(711.2)	7-5/8REG	9-1/2	7	15-3/4(400)	112-7/8(2867)
		(241.3)	(178.0)
26''	7-5/8REG	9-1/2	7	15-3/4(400)	118-7/64
(660.4)		(241.3)	(178.0)		(3000.0)
24''	7-5/8REG	9-1/2	6-7/32	15-3/4(400)	110-15/64
(609.6)		(241.3)	(158.0)		(2800.0)
22''	7-5/8REG	9-1/2	6-7/32	15-3/4(400)	105
(558.8)		(241.3)	(158.0)		(2667.0)
17-1/2''	7-5/8REG	9	5-1/2	12(304)	86-39/64
(444.5)		(229.0)	(140.0)		(2200.0)
12-1/4''	6-5/8REG	8	3-15/16	11-13/16(300)	74-13/16
(331.2)		(203.0)	(100.0)		(1900.0)
8-1/2''	NC50	6-1/2	2-13/16	7-7/8	68-7/64
215.9)	(4-1/2REG)	(165.0)	(71.0)	(200.0)	(1730.0)
6''	NC38	4-3/4	2	7-7/8	55-1/8
(152.4)	(3-1/2REG)	(121.0)	(50.6)	(200.0)	(1400.0)
5-7/8''	NC38	4-3/4	1-13/16	7-7/8	55-1/8
(149.2)	(3-1/2REG)	(121.0)	(46.2)	(200.0)	(1400.0)
When ordering or requesting quotation, if size out of above specification, pls. specify clearly.