Page 882 - Tungaloy Catalog

CAT • • Diameter Adjust

BORE CAT-EM

1 L 2

d D
G

J L1

1 CAT Form A/B AT3 Taper 58-60 HRC N5
2 BORE ISO 9766

BORE CAT-EM Adjustable Drilling Diameter Holder (Unit: inch)
Cat. No. d D L L1 J G Stock
TUNGBORE CAT40 EM3/4 0.75 2.835 5.337 2.795 M10 5/8-11 
TUNGBORE CAT40 EM3/4B 0.75 2.835 5.337 2.795 M10 5/8-11 
TUNGBORE CAT40 EM1 1 2.835 5.337 2.795 M10 5/8-11
TUNGBORE CAT40 EM1B 1 2.835 5.337 2.795 M10 5/8-11
TUNGBORE CAT40 EM1-1/4 1.25 2.835 5.337 2.795 M10 5/8-11
TUNGBORE CAT40 EM1-1/4B 1.25 2.835 5.337 2.795 M10 5/8-11
TUNGBORE CAT40 EM1-1/2 1.5 2.835 5.337 2.795 M10 5/8-11
TUNGBORE CAT40 EM1-1/2B 1.5 2.835 5.337 2.795 M10 5/8-11
TUNGBORE CAT50 EM3/4 0.75 2.835 5.179 2.795 M10 1-8 
TUNGBORE CAT50 EM1 1 2.835 5.179 2.795 M10 1-8 
TUNGBORE CAT50 EM1B 1 2.835 5.179 2.795 M10 1-8 
TUNGBORE CAT50 EM1-1/4 1.25 2.835 5.179 2.795 M10 1-8 
TUNGBORE CAT50 EM1-1/4B 1.25 2.835 5.179 2.795 M10 1-8 
TUNGBORE CAT50 EM1-1/2 1.5 2.835 5.179 2.795 M10 1-8 
11 TUNGBORE CAT50 EM1-1/2B 1.5 2.835 5.179 2.795 M10 1-8 
Add B for coolant through the flange. : Stocked in Japan
Drilling Tools Max: .051"

Min : .012"

The bore's section is actually
made from two shifted circular
sections. The clamping screw
pushes the drill shank through
a narrowed opening, forcing
elastic deformation of the
holder. Contact is made around
more than 180°, providing a
high clamping force.
Lock Screw Pull Stud Preset Screw User Guide
Page ☞ 150 144 150 7
Note: Size table is inch.

11–66 Relating Cutting Conditions Technical reference
pages
(11-14 )
(14-1)