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ETTCO high-speed, sensitive,
friction-drive tappers for accurate
tapping on any drill press
i-'TT™
For long runs or short . . . hole after hole
reliable, accurate, high speed tapping performance. With an Ettco tapper
unskilled operators can produce clean, sharp threads on any drill press
with fewer
broken
taps and fewer spoiled pieces .
These ETTCO design and
construction
features protect taps...
assure smooth sensitive operation
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1. Double-Cone, Cast
tap engages workpiece, the double cone clutch engages the upper or driving
friction cone.
If tap sticks or bottoms the clutch slips, helping to prevent tap breakage.
2. Rapid Reverse: When drill press lever is
lower or reverse cone and
3. Friction
4. Drive and reverse gears and clutch run
accurate service life.
5.
With the exception of
sensitive clutch action.
Clutch
are lined with a specially formulated cork type material which provides the
proper combination of sensitivity and torque in each
Iron
Response
Material:
Driven
Clutch: When drill press lever is pressed and
is
instantaneous
tap
reverses instantaneously
Both upper (driving) and lower (reverse) cone clutches
Model
4B, tappers run in oil for longer life and smooth,
after hole . . . Ettco tappers give
as
tap is rotated and fed
raised, double cone clutch engages
in
heavy-duty ball bearings for long
into
workpiece.
at
13A :1.
tapper
’
s capacity range.
T
Select the ETTCO tapper with
the specifications you need
for your tapping application
Ettco friction-clutch tappers are available in five models, for tap sizes from
No. 0 through 5
of 3:1 for heavy-duty tapping on light drill presses. All models may be used
at any angle, from vertical to horizontal. They are normally furnished for
right hand lapping only but can be modified at the factory for
Tappers furnished for left hand operation will tap both right or
Each Ettco tapper, with the exception
200, is supplied with an
Model 200 is supplied with collets, to accom
modate No. 0 through No. 10 taps.
2
appropriate
/s". One
of
Model
lap chuck.
of these, Model 3B, features an internal gear reduction
left
hand use.
left
All Ettco tapping attachments are available
with quill clamps which add rigidily and take
the weight of the tapper
dle bearings. When ordering specify make,
size, and spindle taper of drill press.
from
drill press spin
hand.
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ETTCO model 3LS lead screw tapping
head produces
precision threads on
any drill press with unskilled operators
The Ettco #3LS Lead Screw Tapping Attachment is a
completely self-contained unit which employs a revers
ing, friction clutch drive mechanism of the same design
and construction used in time-proven standard Ettco
tappers. Incorporated in the unit are a precision lead
screw and nut, depth control device, and actuating lever.
With the #3LS there is no thrust on the cutting edge of
the tap because a lead screw and nut, having the same
pitch as the tap being used, control the feed precisely.
Operator simply presses down on the actuating lever to
engage the clutch in forward motion. Tapper rotates the
lead screw through the nut and feeds the tap into the
workpiece at the correct pitch, until the depth control
stop is reached or the actuating lever is raised.
The Ettco #3LS will produce precision threads —
part or thousands — with unskilled operators. It reduces
parts spoilage, increases quality, increases tap life, and
reduces tap breakage. Fixture costs
hold-down or strippers are not required.
The
Ettco
with quill clamp, one
and tap chuck with two Rubberflex collets. Extra lead
screws and nuts may be ordered separately; lead screw
and nut may be changed in a matter of minutes.
The
only, but it can be furnished for left-hand tapping,
quest. Lead screws and nuts having
be furnished. Ask your Ettco distributor for quotation.
#3LS Lead Screw Tapper is shipped complete
head is normally suitable for right-hand tapping
lead
screw and nut (specify pitch),
are
reduced, because
unlisted pitches can
on
one
re
SPECIFICATIONS
Capacity
Pitch
Lead screw diameter
Stroke
Speed Ratio
Maximum Speed
Weight of unit
Drive .
Forward
Reverse
.........
No. 0 through 5/16" in mild steel.
18. 20. 24, 27. 28. 32, 36. 40, 44. 48,
56, 64, 72, or 80 threads per inch.
1/2"
1-3/8"
l-3/4:l
1500 rpm
33 lbs.
No. 1, No. 2, or No. 3 MTS or female adaptor.
1:1
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Visible-grip tap chucks
.
effective, prscticsl rately on
lightweight tap holders
_
One chuck accurately holds all sizes of taps within its range, so that tap
changing is simple ... no collets ... no sleeves.
Two sets of jaws are
provided to assure true-running, powerful grip and
positive drive. One set of precision-ground jaws centers the tap accu-
the round of the shank, assuring perfect alignment. Another set
’ of powerful visible grip jaws holds the tap in a positive, rigid grip, drives
the tap, and prevents it from pulling out in reverse.
In addition to their use with Ettco tapping heads, Ettco tap chucks are
ideal
for
collets.
use on automatic or hand screw machines or with quick-change
Chuck
No.
2E
3C
3D
3E
4D
4E
5D
5E
5J
For Use on
Ettco Tai
1A
IE
No. IB
No. 2B
No. 3B
No. 4B
No. 5B
Tap
pper
Capacity
No. 0-5/16" l/8"-ll/32"
No.
8
No. 10-5/8" 3/16"-l/2"
l/4"-3/4" 13/64"-19/32"
9 /16 " -1"
1/2"
Round Shank
Capacity
l/8"-25/64"
2 7/64 "-7/8"
Body Hole
.6855" Straight
83/
Taper
1A
20
2A
2A
3A
3A
7 Jarno
3A
7Jarno
4 Jarno
Chuck
Dia.
1-5/16"
1-5/16"
1-5/8"
1-5/8"
1-13/16"
Chuck
No.
1A
IE
2E
3C
3D
3£
4 D
4E
5D
5E
5J
Shanks & arbors for ETTCO tap chucks
Shanks and arbors for mounting Ettco tap chucks on drill
presses and machine tools are stocked in a wide range of
shank sizes, both tapered and straight. Taper shanks
able in either Morse Taper
or Browne & Sharpe Taper.
Straight shanks are made in six sizes: Va" x
3
/j" x 3";
rately
1" x 3"; lVi"
x 4" and ltyi" x 4". All shanks are accu
machined and precision ground.
are
5
/s" x 2V2'';
avail
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High-speed threading with ETTCO tapping heads
button and acorn die holders
Ettco die holders are designed
ing jobs. They are held by the tap chuck and can be quickly unchucked
and replaced by taps if desired. Three sizes of button and acorn styles
cover the range from No. 0 through 5
through 5
/s" for acorn die holders.
for
use with round dies on
/s" for button die holders and 1/16"
external
thread
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ETTCO interchangeable quill damp system mounts ETTCO
tappers to any drill press
Quill Clamps are highly recommended for use with Ettco tappers to add
stability to the tapping set up, provide greater safety, and remove the
weight of the tapper from drill press bearings. The Ettco system of quill
clamp mounting
provides
great flexibility and easy changeover from one
drill press to another.
When
tappers
are
to be
used
with
quill clamps they are fitted at the
factory with a standard adapter ring, which is drilled and tapped to accept
standard Ettco quill clamps. A series of six clamps, differing only in
length, accommodates various types of drives. A series of 11 bushings
reduces the bore of the clamps from 23/s" diameter to 1%" diameter, thus
permitting fitting to any standard
drill
press having a quill no larger than
23/s''. (For drill presses having larger diameter quills, other clamps are
available).
Note:
Two piece drivers, to allow a small amount of float, are used with
quill clamps. Thus tappers having an adapter ring for quill clamps must
be used with clamp. Conversely, tappers which do not have the ring
cannot be used with quill clamps.
When ordering tapping attachments with quill clamps, specify
make, size and spindle taper of drill press. (See also quill clamp data
request form).
For detailed information on these standard clamps and bushings
see Ettco data sheet No. QC-1.
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ETTCO high-speed tappers
ETTCO MODEL NO. 200
A highly sensitive tapper with special carbon-asbestos clutch for extremely delicate work
at high speed. True running and consistent action produces accurate, uniform threads.
Internal parts run in oil for positive lubrication and smoother operation. Model 200 is
available with quill clamp.
Tap
Capacity:
Maximum Speed: 2,200 rpm.
Chuck: Furnished with three Ettco No. 44.00 collets which cover the range from No. 0
to No. 10
Drive: No. 1 or No. 2 Morse Taper shank, 2A or 33 female adapter for use with chuck
taper spindles, or 1/2" diameter straight shank.
This high speed tapper for
sistent action. Internal parts are oil-cooled and lubricated. Model IB is available with
quill clamp.
Tap Capacity: No. 6 through 1/4" in mild steel.
Maximum Speed:
Chuck: Furnished with Ettco Chuck No. IE which has
Drive: No. 1, 2 or 3 Morse Taper, or a 2A or 33 female adapter for use with chuck taper
spindles.
2,000
small to medium size holes is sensitive and rugged with con-
rpm.
ETTCO MODEL NO. 2B
This medium range tapper is sensitive enough to be used with small taps at high speeds,
yet it is capable of pulling larger taps through tougher material. Long-wearing clutch
runs
Model 2B is available with quill clamp.
Tap Capacity: No. 10 through 3/8" in mild steel.
Maximum Speed: 1,500
Chuck: Furnished
Drive: No. 1, 2 or 3 Morse Taper Shank, or 2A or 33 female adapter for use with chuck
taper spindles.
No. 0 through No. 10 in mild steel.
taps.
ETTCO
MODEL NO. IB
a
tap capacity of No.
in oil for positive lubrication and sensitive, consistent action over the entire range.
0-5/16".
rpm.
with Ettco Chuck No. 2E which has a tap capacity of No. 8-1/2".
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ETTCO MODEL NO. 4B
Rugged, yet smooth
size taps. Unit features beefed up construction throughout for reliable, consistent action
over long runs and long life. Model 4B is available without quill clamp.
Tap Capacity: l/4"-5/8" in mild
Maximum Speed: 1,000 rpm.
Chuck: Furnished with Ettco Chuck No.
Drive: No.
2,3 or 4
and
sensitive, so that only moderate pressure is needed to drive large
steel.
4E
which has a tap capacity of
Morse Taper.
ETTCO MODEL NO. 3B
To Extend The Capacity of Light Drill Presses
The No. 3B is a specially designed and constructed unit for heavy-duty tapping on light
drill presses. Planetary reduction gears, built into the tapper, drive the tap at 1/3 drill
press speed This has the same effect as adding back gears to the drill press so that
increased torque is delivered at the tap. Heavy-duty ball bearings assure true running
and long life. Clutch runs in oil for sensitivity and positive lubrication of internal parts.
Tap Capacity: l/4"-l/2" in mild steel.
Maximum Speed: 1,200 rpm input.
Chuck: Furnished with Ettco Chuck No. 3E which has a tap capacity of No. 10-5/8".
Drive: No 2 or 3 Morse Taper. Note: quill clamps are recommended because
reverse torque caused by the planetary gearing. If quill clamp is used, the 3B may be
furnished with No. 1 Morse Taper or 2A or 33 female adapter. If clamp is not used, stop
rod must be fastened to drill press column.
l/4''-3/4".
of
the high
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We reserve the right to change the specifications and
design of our products without notice.
Automatic Drilling Units & Machines
Universal
Joint Adjustable Drillheads
Special Machines
Automatic Tapping Machines
O
Tapping Attachments
I
In back of every Ettco product stands a
modern, progressive, production-minded
organization whose sole aim is to produce
the finest in drilling and tapping
equipment. No detail is overlooked in
building a product that will give you a
genuine GUARANTEE OF SATISFACTION
Automatic Lead-Screw Tapping Units
Fixed Multiple-Spindle Heads
Double-Eccentric Multiple-Spindle
heads
Drill-
ETTCO TOOL AND MACHINE COMPANY, INC.,
CATALOG 68
Yale St.
B
& 6th Ave.,
York, Pennsylvania/
17405
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Single-Eccentric Multiple-Spindle Drill-
heads
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:
B
G
3M-675
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