Nova PRO-TEK G3 User manual

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OPERATION MANUAL
PRO-TEK G3 CHUCK
Publication date: 22 September 2020
Models:
48290 –Insert Thread (Insert Required)
48291 –1” 8TPI Reversible
48292 –M33 ASR Eurolock

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Contact Us
Teknatool International Ltd
Phone: [phone]
Teknatool USA
Phone: [phone]
Customer Solutions
For all worldwide Inquiries, Repairs or Services (issues must be in writing)
Email: [email protected]m
Or you can contact your retailer - for contact information please see our website www.teknatool.com

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Table of Contents
Contact Us.........................................................................................................................................................................2
Table of Contents..............................................................................................................................................................3
Welcome...........................................................................................................................................................................4
Benefits of NOVA PRO-TEK G3 Chuck ...........................................................................................................................4
General Health and Safety Guidance................................................................................................................................6
PRO-TEK G3 Chuck –Types...............................................................................................................................................9
NOVA Chuck Inserts ........................................................................................................................................................10
PRO-TEK G3 Chuck Parts View ........................................................................................................................................11
Operation of the chuck ...................................................................................................................................................13
Mounting the jaws onto the chuck.................................................................................................................................13
Removing jaws from the chuck.......................................................................................................................................14
Mounting the chuck onto a lathe ...................................................................................................................................15
Mounting the chuck using the ASR Eurolock locking ring...............................................................................................17
Screw chuck –Safe Lock Woodworm Screw...................................................................................................................18
To use the Safe Lock Woodworm screw on a workpiece ...............................................................................................19
Forming a Mortis/Recess or Tenon/Spigot.....................................................................................................................20
Safety Concerns when turning................................................................................................................................20
Forming a Mortis/Recess ............................................................................................................................................21
If you do not own a NOVA Dovetail chisel..................................................................................................................22
Recommended Diameter of the recess ..................................................................................................................22
Forming a Tenon/Spigot .............................................................................................................................................24
Recommended diameter for the tenon/spigot ......................................................................................................25
Troubleshooting..............................................................................................................................................................26
Chuck runout inspection procedure ...............................................................................................................................28
Equipment Required ...............................................................................................................................................29
Inspection procedure..............................................................................................................................................29
PRO-TEK G3 Chuck Maintenance....................................................................................................................................33
Required tools.............................................................................................................................................................33
Removing the chuck from the lathe............................................................................................................................34
Disassembling the PRO-TEK G3 chuck.........................................................................................................................36
Parts to clean and inspect on the disassembled chuck ..............................................................................................37
Reassembly of the PRO-TEK G3 chuck ........................................................................................................................38
Go to Teknatool.com to learn more about our full assortment of accessories...........................................................41

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Welcome
Thank you for purchasing our NOVA PRO-TEK G3 Geared Chuck. It is a new addition
to our NOVA woodturning chuck range with advanced features to enhance your
chuck use. It provides a versatile and easy method for fast and secure work holding
for all face turning –bowls, platters, egg cups, vases, boxes, goblets, and an endless
variety of similar projects.
The NOVA PRO-TEK G3 Chuck combines the best features of our NOVA Chuck, G3
Chucks, and similar woodturning chucks (wide jaw movement, quick two-way grip)
with the advantages of our latest technology and inNOVAtion.
As a valued customer, we would be pleased to hear from you and how you found
your PRO-TEK G3 Chuck. Any comments on the chuck or accessory ideas would be
very welcome so that we can continue to offer what we believe is the best
woodturning chucking system available.
Benefits of NOVA PRO-TEK G3 Chuck
•Premium rust resistant nickel plating, ideal for turning green wood.
•Stronger and more versatile 50mm/2” PRO-TEK Jaws with an improved dovetail
AND serrated profile for maximum control. The unique woodworking dovetail
profile pulls the project into the chuck and holds round and square blanks more
firmly.
•Precision laser etched jaw numbering allowing ease of jaw and slide alignment,
positioning and change out.
•Upgraded 6 point star fasteners exerting more torque with ease, offering better
holding power and minimizing strip out for longer life.
•Jaw fastening wrench upgraded to T-bar handle (from hex wrench) for reduced
stripping; and enabling quicker tightening of screws which are easier on hands.
•Intuitive clockwise scroll rotation for ease of use.
•CNC precision machined for unparalleled tolerances and accuracy.
•Powerful geared grip delivers tremendous slide holding power.
•Copper-infused, precision-cast jaw slides for effortless movement and
resistance to wear and tear.
•Single-handed operation offers fast and convenient mounting for your project:
quicker setup equals more time to turn.
•Rotation arrow for easy reference and fast opening and closing action.
•Auto safety stop feature to keep Jaw slides from protruding past the chuck
body.
•Jaw mounting profile is cross-compatible with all NOVA chucks.

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•NOVA’s Spindle Adaptor system — fit your NOVA Insert chuck to various lathe
spindle threads.
•Safe Lock Woodworm Screw included for fast mounting of rough material.
•Upgraded chuck key with sliding T-bar handle.
•FREE! NOVA microfiber workshop towel (11.5"/29.5mm x 10.5"/27.5mm) to
help keep your chuck and jaws well maintained.
•6 Year Full Replacement Warranty —Best in Market!
All NOVA jaws are specially designed to provide maximum grip expanding into a
mortis/recess or contracting around wood tenons/spigots of varying sizes and
shapes. NOVA chucks can instantly swap from the expansion mode to the contracting
mode, with no adjustments or extra fittings being necessary. Any mortis/recess or
tenon/spigot size can be selected between the minimum and maximum range of the
jaws. The jaw slides (accessory jaws removed) can be used to grip small
tenons/spigots.
ACCURACY: The PRO-TEK G3 Chucks are sample tested from each batch and are made
to run within the following tolerance limits measured on the 50mm (2”) PRO-TEK
Jaws:
Face/Axial Runout (X Axis) Maximum: 0.08mm (0.0031 inch)
Radial Runout (Y Axis) Maximum: 0.15mm (0.0060 inch)
Testing is performed with the chuck mounted with a standard NOVA threaded insert.
However, note that wood is an elastic material –with different densities even in the
same piece, and liable to warp out of place while turning. This is a part of the beauty
and appeal of working with wood. However, under these circumstances pursuing
accuracies (as above) with mounted wood can be difficult to achieve. For most
woodturning situations (with some expectations) there is little need to achieve such
tolerances.

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General Health and Safety Guidance
ATTENTION: Please carefully read and understand the instructions in this manual
before assembly, installation and use of your PRO-TEK G3 Chuck.
Keep these instructions in a safe place for future reference.
WARNING: This chuck can contribute to serious injury (as with any other power tool
accessory) if this manual guidance is not followed or if it is used improperly on the
lathe. Read and understand the lathe owner's manual. If you do not have a manual,
contact the supplier of your lathe to obtain one before using the lathe and chuck.
User must be professionally trained to use this chuck. Vocational school courses or
other expert tuition is recommended. NOVA also recommends joining a woodturning
club.
As with other work holding methods, an extremely cautious and sensible approach
is necessary. With the PRO-TEK G3 Chuck it is not possible to give exact directions
as to the amount of tightening pressure required for adequate work holding or
approved chisel cutting techniques. Follow closely strict guidelines in this manual
for different jaw types on wood blank diameters and length, plus strictly follow
recommended lathe speeds.
Safe Operation:
Eye Protection: Woodturning operations can result in objects being thrown into your
eyes which can result in severe eye damage. Protective eye wear must always be
used. Everyday spectacles are not protective eye wear. We recommend a full-face
shield. Always wear eye protection which complies with current ANSI Standard Z87
(USA).
Noise Protection: Use ear plugs or ear defenders. Particularly if the noise exceeds
85dB. Exposure to high levels of noise can lead to hearing problems.
Dust Protection: Use respiratory protective equipment (dust mask, portable
respirator device). Exposure to high levels of irritating dust when turning or sanding
hardwoods, soft woods and manufactured composite boards (MDF) can result in
serious health problems. In addition, adequate workshop dust extraction must be
used.
Chuck is properly secured on lathe spindle: Follow mounting instructions for your
lathe for faceplates and other spindle fixtures. Do not rotate chuck under power

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unless workpiece is firmly clamped.
WARNING LATHE SPEED: Excessive speed is a serious lathe hazard. Always turn at
the slowest speed possible. Speed will vary with wood blank size. The larger the blank
the slower the speed. Consult your lathe manual or lathe information plate for speed
guidelines. Do not attempt to use the chuck unless the recommended lathe speeds
to size of wood blank are known. In addition, you must strictly follow the maximum
speed limits set out in the operating section of this manual. Do not exceed them
under any circumstances.
CHECK WORKPIECE: Examine wood blank carefully before mounting on chuck/lathe.
Only mount wood that has no cracks, splits, holes, or weaknesses (e.g. rotten or
spongy sections).
Do not use poorly jointed or laminated wood. Irregular or out of balance stock needs
to be turned at the slowest possible speed until it is in balance.
Make sure wood is clamped firmly. Follow mounting instructions for different
gripping modes and jaw types. In the expansion mode do not use undue force or jaws
may split the wood.
As above Do not exceed maximum guidelines in this manual for wood blank
diameters/length set out in this manual for different modes and jaw types.
Check wood is securely held in chuck before operation. Check grip by vigorously
wrenching wood blank back and forth. If any loosening occurs, re-examine holding
area for adequate grip (Following mounting guidelines) and any damage to holding
area. Rotate manually to make sure of clearance before switching power on.
DUPLICATOR OR JIGS: Do not use chuck for work holding with a duplicator or jigs.
Safe Practice:
CHISEL USE: Use only handheld woodturning chisels to shape wood being held in
chuck. Use the recommended chisel for the job. Use safe and commonly approved
techniques.
WARNING: Never attempt to place hands on a moving chuck on a lathe. Wait for the
chuck to come to a complete stop before hands are anywhere near the chuck. Trying
to grab at a moving chuck could result in SERIOUS INJURY.
JAW SLIDES: For safe operation do not extend the jaw slides beyond the chuck body
under any circumstances.
Wherever possible stand to one side of the revolving wood.

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WEAR SUITABLE CLOTHING. Do not wear any loose clothing, neck ties, gloves,
bracelets, rings, or other jewelry that could get caught in moving parts. Wear
protective hair covering to contain long hair.
DRUGS, ALCOHOL, MEDICATION. Do not operate chuck or lathe while under the
influence of drugs, alcohol, or any medication.
KEEP CHILDREN AND VISITORS AWAY: All children and visitors should be kept safe
distance from the work area.
Make workshop childproof with padlocks, master switches, or by removing starter
keys, or have machines fitted with a Striatech drive system using the password lock
feature

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PRO-TEK G3 Chuck –Types
There are three models of the PRO-TEK G3 Chuck to meet various wood turning
requirements. Please check the contents of your box to ensure you have the model
intended to purchase.
Note:
Inserts, accessories, jaw sets etc. are fully interchangeable between the NOVA G3,
SuperNOVA, SuperNOVA2, Titan III, PRO-TEK G3 and PRO-TEK SuperNOVA2 Chucks.
The only exceptions are the Infinity model jaw slides and jaws that are exclusive to
the NOVA Titan chuck.
INSERT THREAD MODEL
(SKU 48290)
1x Nickel Plated Chuck body
1x Sliding T-Handle
1x PRO-TEK 50mm Serrated Jaw Set
1x M6 Grub screw
2x Fiber washers
1x Hex Key
8x M6x10 Star Jaw screws
1x Star head T handle
1x Safe Lock Woodworm Screw
1x Workshop cloth
1x Quick Start Manual
DIRECT THREAD MODEL
1” 8TPI REVERSIBLE (SKU 48291)
1x Nickel Plated Chuck body
1x Sliding T-Handle
1x PRO-TEK 50mm Serrated Jaw Set
1x M6 Grub screw
2x Fiber washers
1x Hex Key
8x M6x10 Star Jaw screws
1x Star head T handle
1x Safe Lock Woodworm Screw
1x Workshop cloth
1x Quick Start Manual
DIRECT THREAD MODEL
M33 ASR EUROLOCK (SKU 48292)
1x Nickel Plated Chuck body
1x Sliding T-Handle
1x PRO-TEK 50mm Serrated Jaw Set
1x M6 Grub screw
2x Fiber washers
1x Hex Key
8x M6x10 Star Jaw screws
1x Star T handle
1x Safe Lock Woodworm Screw
1x Workshop cloth
1x Quick Start Manual

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NOVA Chuck Inserts
Below is the list showing the full range of NOVA chuck inserts that are currently
available, for additional information on NOVA inserts please see our website
teknatool.com.
Code
Description
Thread/
Bore
diameter
Thread Pitch
Thread
Direction
Standard
Note
I3NS
INSERT 3
M20
1.5
RH
Electra Beckum
I9NS
INSERT 9
3/4"
16 TPI
RH
With 6mm register
ICNS
INSERT C
1"
10 TPI
RH
BSF
TL1000 Woodfast/Durden
IDNS
INSERT D
1"
8 TPI
RH
UNC
Delta, Rockwell, Golding
IENS
INSERT E
1"
12 TPI
RH
UNF
Myford ML8
IHNS
INSERT H
3/4"
10 TPI
RH
BSW
Rockwell
IINS
INSERT I
M24
3
RH
B-Line
IKNS
INSERT K
M18
2.5
RH
ELU DB 180
ILNS
INSERT L
1 1/4"
8 TPI
RH
UNS
NOVA Nebula, Orion, Galaxi,
Saturn, DVR XP, DVR 3000,
NOVA 1624 II, NOVA 1624,
NOVA 3000
INNS
INSERT N
Blank Insert (Can be threaded up to 28mm or 1 7/64")
IQNS
INSERT Q
M30
3.5
RH
NOVA TL1500, 3000, Comet
IRNS
INSERT R
1” 8TPI
RH
Jet 1221 lathe 6mm off set
lock
ISNS
INSERT S
5/8"
Plain bore
Designed specifically for
Shopsmith ProV and Power
Pro machines
IVNS
INSERT V
7/8"
14 TPI
NF
IYNS
INSERT Y
1 1/4"
8 TPI
RH
UNS
For lathes that do not have
reverse turning function
IXNS
INSERT X
1"
8 TPI
RH
Reversible;
Designed specifically for
NOVA Comet II Midi Lathes

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PRO-TEK G3 Chuck Parts View

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REF#
QTY.
PART#
DESCRIPTION
1
1
48206
48239
1359011
Chuck Body Insert Thread
Chuck Body 1” 8TPI
Chuck Body M33 ASR Eurolock
2
1
1359010
Sliding T-Handle
3
1
23109
Scroll ring right hand
4
1
23051
23103
Jawslide #1
Jawslide #1 for M33 ASR Eurolock
5
1
23052
Jawslide #2
6
1
23053
Jawslide #3
7
1
23054
Jawslide #4
8
1
EC48
Circlip
9
2
NS1000
Fibre (Washer) WAD
10
1
G0606
M6x6 Grub Screw
11
8
CM5010182
M6x10 Star head screws
12
1
10006
Safe Lock Woodworm screw
13
1
13049
Star head T-handle
14
1
AK3
Hex Key 3mm
15
1
6075
PRO-TEK 50mm (2”) Jaws

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Operation of the chuck
Main functionality of the chuck is to grab and secure the workpiece by expanding or
contracting its jaw slides. The jaw slides of the chuck can be operated by using the
provided t-handle.
The image below illustrates how the chuck can be operated:
Mounting the jaws onto the chuck
The PRO-TEK G3 chuck is supplied with a set of PRO-TEK 50mm jaws (#6075). The jaws
must be securely fastened for the chuck to serve its function correctly. Mounting
procedure of the jaw applies to all NOVA accessory jaws.
Please follow the steps below when mounting the jaws onto the chuck:
1. Ensure there are no dusts or debris
on the bottom surface of the jaw
and top surface of the jaw slides.
2. Each jaw segment has a number
indented on the jaw edge to
indicate its correct mounting
position for minimal runout.
Loosely screw the jaw segment
onto the jaw slide with the number
Open
Close

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matching the jaw slide. The
numbering should be 1,2,3,4 in a
clockwise direction.
Note:
The jaw segments should slightly
rattle by hand at this point.
3. Tightly close the jaw slides until all
side surfaces of the jaw segments
meet one another and no lights can
be seen between the jaw segments
4. Fully tighten all the jaw segment
mounting screws by using NOVA
Star Head T-bar handle supplied.
Removing jaws from the chuck
Simply remove the jaw mounting screws by using the supplied NOVA Star head
wrench to dismount the jaw segments from its jaw slides.
Tip:
There may be occasions where the jaw segment seizes on the jaw slide which
poses difficulties when attempting to remove the jaw slides by hand. Use a soft
hammer (mallet) to gently tap either side of the jaw segment to dislodge it out
from the jaw slide.

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Mounting the chuck onto a lathe
There are two configurations available for the PRO-TEK G3 Chuck:
•Insert model - Requires an insert adapter for chuck to be mounted on the lathe.
See full list in this manual of the NOVA (lathe spindle thread) insert adaptors
available.
•Direct Thread model: M33 ASR Eurolock and 1”x8TPI
Both configurations will require identical procedures to be correctly mounted onto
the lathe however the insert version will require an insert adapter to be screwed into
chuck and then mounted onto the lathe.
The image below illustrates an insert version chuck mounting procedure on the lathe;
however, identical procedures will apply for the direct threaded version:
1. If the chuck is an insert model,
ensure the insert is bottomed out
on the chuck body before mounting
on the lathe.
2. For both Insert & Direct Thread
model: Wind the chuck on the lathe
spindle until the chuck comes firmly
in contact with the bearing/ spindle
shoulder with no gaps in between.
Note: Make sure there is no grub
screw threaded onto the chuck
body or insert before threading
onto the lathe spindle.
Important: Left hand thread inserts
must be locked to chuck body or
chuck body could unwind from
insert.
3. Firmly tighten the chuck body/
insert using a chuck spanner
(Sold separately; SKU 23079)
4
1

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NOVA Chuck Spanner
4. Place the red thread protector
washer into the M6 threaded hole
indicated in the image. Then wind
the M6 grub screw in position and
tighten with 3mm Hex head wrench
(provided) which prevents the
chuck from loosening from the
lathe spindle.

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Mounting the chuck using the ASR Eurolock locking ring
The M33 version NOVA lathes and chucks have a special locking coupler to prevent
the chucks from coming loose and detaching from the lathe spindle. The ASR Eurolock
locking ring is exclusive to the M33 version lathes and chucks.
Note:
The locking ring is not compatible with lathes and chucks that are not the M33 ASR
Eurolock model (example shown is SUPERNOVA2 chuck).
Below are the steps on how to attach the
ASR Eurolock locking ring:
Step 1:
Tighten the M33 ASR Eurolock chuck to the
spindle on the lathe, make sure the rings on
the spindle and chuck have been clamped.
Step 2:
Put the lower part of locking ring under the
clamped rings.
Step 3:
Put upper part of the locking ring to the
clamped rings as well.
Step 4:
Using the Hex key to tighten up two bolts on
the locking ring.
PRO-TEK Chuck

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Screw chuck –Safe Lock Woodworm Screw
The Safe Lock Woodworm Screw (screw chuck) provides a convenient method for
holding a bowl blank to cut a recess or spigot to mount on an accessory jaw.
The accessory jaw segments must be properly mounted beforehand to use the Safe
Lock Woodworm screw. The woodworm screw is to be mounted inside the centre
hole of the chuck as shown below:
Open the jaw slides and insert the
Safe Lock Woodworm screw in the
center hole of the chuck.
Position the Safe Lock Woodworm
screw as shown as the image.
Note: All 4 flat sides of the Safe
Lock Woodworm screw should be
in contact with the flat end of the
jaw slides.
Make sure this flat face of the Safe
Lock Woodworm screw comes in
contact with the flat surface of the jaw
slide

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To use the Safe Lock Woodworm screw on a workpiece
1. Ensure the workpiece surface facing
the jaw segments that is flat as
possible.
2. Drill an 8mm(.31”) diameter hole at
approximately 19mm(0.74”) deep into
the work piece
3. Firmly press the Safe Lock Woodworm
screw into the pre-drilled hole on the
workpiece and thread the workpiece
onto the wood worm screw until the
workpiece makes good contact with
the mounted jaws on the chucks.
Caution –Maximum capacity and speed of Safe Lock Woodworm screw:
DO NOT USE THE SCREW FOR VERY LARGE WOOD BLANKS. The Safe lock Woodworm
screw is intended for small bowl and screw chucking work. The maximum capacity
which should be mounted on the screw - 250mm (10 inches) diameter x 100mm (4
inches).
DO NOT EXCEED 600 RPM FOR THIS OPERATION.Use tailstock support whenever
possible.
8mm diameter
Hole. 19mm deep

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Forming a Mortis/Recess or Tenon/Spigot
There are two main types of technique used to hold a workpiece onto the chuck:
Tenon (Spigot) and Mortis (Recess).
In either case, to form a dovetail in the mortis/recess or on a tenon/spigot, the
workpiece must be securely mounted on the lathe with a woodworm screw (Or
equivalent such as a faceplate or between centres).
Note: There are two main types of technique used to hold a workpiece onto the
chuck: Mortis/Recess and Tenon/Spigot.
In either case the forming of a proper dovetail will ensure that the jaws will perform
to their maximum ability.
Note:
The procedures below show the general formation and uses of both the
mortis/recess and tenon/spigot. However, it is up to the user’s experience to
determine the ideal size of the recess and spigot size based on the jaws they are using.
Safety Concerns when turning
IT IS RECOMMENDED TO USE THE TAILSTOCK FOR ADDITIONAL SUPPORT
WHENEVER POSSIBLE. BY NOT CHUCKING UP YOUR PIECE PROPERLY, YOU RISK
YOUR PIECE DISLODGING FROM THE CHUCK