Duplex Morse Taper Reamers

duplex morse taper reamer

High Speed Steel with Morse Taper Shank

One Straight Flute - Remaining Flutes Helical

Duplex Morse Taper Reamers with Morse Taper Shank

One straight flute, all other flutes helical - for precision finishing and problem holes.

The unique duplex flute configuration eliminates chatter and rifling and provides an extremely fine finish – often eliminating the need for polishing or lapping.

Excellent for use in a variety of materials including many types of steel, brass, aluminum and plastic.


Size S.E. Diameter L.E. Diameter Flute Length No. of Flutes inc. Str. Fl. No. Morse Taper Shank OAL
0 .2503 .3674 2 1/4 4 0 5 11/32
1 .3674 .5170 3 6 1 6 5/16
2 .5696 .7444 3 1/2 6 2 7 3/8
3 .7748 .9881 4 1/4 8 3 8 7/8
4 1.0167 1.2893 5 1/4 8 4 10 7/8
5 1.4717 1.8005 6 1/4 10 5 13 1/8
6 2.1119 2.5551 8 1/2 12 5 17 3/7

Also furnished as Specials with special helix angle, extra length, end cutting or with chip breakers.

link to Reamer index page

Trademarks are the properties of their respective owner(s).

December 2022, December 2009 CSS, October 2007, December 1998

The descriptions, illustrations, specifications, dimensions, and part numbers are subject to change without notice.


Servicing the Canadian provinces and territories of
Newfoundland, NF, NL, Nova Scotia, NS, New Brunswick, NB, Prince Edward Island, PEI, PE, Quebec, PQ, QC, Ontario, ON, Manitoba, MB, Saskatchewan, SK, Alberta, AB, British Columbia, BC, Northwest Territories, NT, Nunavut, NU, Yukon, YT

Servicing Canadian cities,
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Servicing US cities,
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