Vicmarc Machinery VM90 User manual

Vicmarc Uni-Chuck
Vicmarc Machinery Pty Ltd
Manufacturers of Quality
Woodturning Lathes and Accessories
4 Jaw Self - Centering Chuck
Owner’s Manual
for the VM90, VM100,
VM120, VM140 &
VM150

Vicmarc Uni-Chuck
Vicmarc Machinery Pty Ltd
52 Grice Street Clontarf QLD 4019 Australia
Phone (07) 3284 3103 Fax (07)3283 4656
Int Ph 61-7 3284 3103 Int Fax 61-7 3283 4656
Manufacturers of Quality
Woodturning Lathes,
Chucks and Accessories
Vicmarc Machinery, a family owned and operated business, has
been manufacturing wood turning lathes and accessories for the
hobbyist and professional since 1984. The company is dedicated
to providing machinery of the highest quality and precision
engineering which has secured sales worldwide.
Through constant improvement, Vicmarc retains its place as a
leader in the field. Vicmarc lathes and chucks are known and
respected internationally for their robust design and ease of
use. Only the best materials and latest high precision, computer
controlled machinery are used in the manufacture of
Vicmarc products.
The company continues to respond to the demands of the market,
updating and improving at all stages of manufacture.
P2

Vicmarc Uni-Chuck
Description
The Vicmarc 4 Jaw Self Centering Chuck is designed and manufactured in
Australia by Vicmarc Machinery, utilising the precision, simplicity and reliability
of the engineering chuck.
This chuck grips internally and externally, will hold round and square work, has
a hollow centre so that through boring can be done from either end and can
even be run clockwise or anticlockwise.
Manufactured from K1045 (medium tensile steel - 45 tonne) the chucks have a
higher durability ensuring a longer life and a very high quality finish which is less
susceptible to rust.
Vicmarc chucks are guaranteed for 12 months and a large variety of
accessories are available to suit them.
IMPORTANT SAFETY INFORMATION
Vicmarc wood turning chucks are manufactured from the highest quality
materials to ensure a long working life. To ensure that your chuck is kept at its
optimum performance please take note of the following points:
• All Vicmarc chucks have a stop pin below the number No. 4 jaw
runner except the VM150 which has the stop pin below the No. 2
Jaw. Its purpose is to prevent the jaws from expanding beyond the
safe working limit. The chuck must NOT be opened beyond its full
extent or damage could be caused to the stop pin. A damaged Stop
Pin could in turn damage the Jaw Runners. We recommend the use of
a larger dovetail jaw set when working with larger scaled pieces.
• The “Screw Point” supplied with each Vicmarc Chuck should be
mounted as described in the Owners Manual (page 6) . Failure to
mount the screw correctly could cause damage to the screw point.
Drilled holes for the screw point should be as follows:
7mm - 7.5mm for Softwoods
8mm - 8.5mm for Hardwoods
Where possible, holes should be drilled on a pillar drill.
List of Contents
Safety Precautions ................................................................Page 4
Maintenance .........................................................................Page 5
Beginners Tips......................................................................Page 5
Mounting on the Lathe, Clamp Mode, Expansion Mode...... Page 6
Operation - VM90 & VM140................................................Page 7
Operation - VM100 & VM120..............................................Page 8
Operation - VM150 .............................................................. Page 9
Maintenance - VM150 .......................................................... Pages 11-13
Jaw Styles and Accessories ...................................................Pages 14-17
Exploded Diagram Chuck Jaws ............................................Pages 18-19
The Vicmarc Guarantee ....................................................... Page 20
P3

Vicmarc Uni-Chuck
P4
SAFETY PRECAUTIONS
1. READ AND UNDERSTAND INSTRUCTION MANUAL
BEFORE OPERATING WOOD LATHE.
2. Always wear eye protection.
3. Do not wear gloves, neckties, jewellery or loose clothing.
4. Do not operate without guards in place.
5. Rough out workpiece before installing on face plate.
6. Do not mount a split workpiece or one containing a knot.
7. Tighten all locks before operating.
8. Rotate workpiece by hand before applying power.
9. Use slowest speed when starting a new workpiece and do not exceed
permitted speed.
10. Disconnect machine from power source before making repairs or
adjustments.
11. Do not operate while under the influence of drugs alcohol or
medication.
12. Remove the tool rest before sanding or polishing.
(

Vicmarc Uni-Chuck
P5
GENERAL MAINTENANCE
Before the chuck is mounted on the lathe, make sure that all the threads are thoroughly
clean and free of debris. This will ensure the chuck will run true.
The chuck is engineered to very close tolerances and may initially be sti to operate. With
use movement will become easier. To maintain easy jaw action, regularly spray oil onto the
scroll and work lever through full range of movement. Inspect chuck regularly for build up
of dust in the scroll and jaws. Clean as required.
BEGINNERS TIPS
PREPARE THE WORK PIECE THE FOLLOWING WAY
200-250mm dia. 40-50mm thick; RPM 800-1000
1. Drill 25mm deep and 7-8mm dia. hole in the centre of workpiece
(Avoid drilling into the end grain, this could result in less grip)
2. Make sure the workpiece is as round as possible.
3. Choose appropriate speed before you start the lathe.
4. Screw the workpiece hard against the jaws.
5. Heavy or unbalanced workpieces should not be fastened directly to the screw
chuck. Use the face plate rings instead.

Vicmarc Uni-Chuck
P6
Mounting on the Lathe
The Vicmarc Uni-Chuck fits a
wide range of lathe spindle sizes.
This is done by changing the
threaded insert. Your dealer will
advise on the insert required
for your lathe. Check that the
insert is firmly screwed into the
Chuck body and then screw the
assembled chuck into the lathe
spindle. Insert must be firmly
seated against the lathe spindle
shoulder.
The Screw Point
The Screw Chuck is used
to mount small cross
grained pieces
Clamp Screw Point this way
for VM90 & VM 100
y
p
in
dl
e
Clamp Screw Point this way
for VM120, VM140 & VM150
Lathe
Spindle
Insert Chuck
Clamp Mode
With this application the workpiece is held
by the jaws. To achieve a good hold, press
the bowl end hard against the jaws. Fasten
the workpiece to the screw or onto the face
plate. When pre-turning bowls from green
timber it is possible to do this between
centres or with a pivot chuck. Turn a 5 to
10mm deep dovetail recess first. The sizes
of all the jaw types available are shown in the
tables on pages 18 and 19.
For this application a recess is turned into
the workpiece. The depth of the recess
depends on the actual size of the workpiece
as well as the type of timber used. The
minimum depth should be 5mm to 10mm
Expansion Mode

Vicmarc Uni-Chuck
P7
OPERATION
VM90 and VM140
The VM90 and VM140 chucks are for those who prefer to operate the chuck using the
quick- acting Tommy Bars (Levers), which saves time when mounting and dismounting
bowls.
The VM90’s compact size makes it ideal for use on 300mm (12”) capacity lathes or
smaller, whilst the VM140 will hold most work up to 500mm (20”) in diameter with
standard jaws.
The basic chuck includes: chuck body, two tommy bars, screw point, allen key, and the
owners manual.

Vicmarc Uni-Chuck
P8
OPERATION
VM100 and VM120
The VM100 and VM120 t-bar allen key operated chucks provide one-hand tightening
along with tremendous gripping power provided by the 6 to 1 ratio of the scroll. The
totally enclosed back assures a consistent smooth action by preventing dust and debris
from getting into the scroll of the chuck.
Keyed chucks cannot be beaten when it come to holding power.
The VM100’s compact size makes it ideal for use on 300mm (12”) capacity lathes or
smaller, whilst the VM120 will hold most work up to 500mm (20”) in diameter with
standard jaws.
Basic chuck includes: chuck body, t-bar allen key, screw point allen key and the owners
manual.
3
4
56
7
8910
11
12
13 14 15
16
PARTS LIST
ITEM QTY VM100 - PART NUMBER VM100 - DESCRIPTION VM120 - PART NUMBER VM120 - DESCRIPTION
11 P00027 8mm T-Bar P00028 10mm T-Bar
21P00024 3mm T-Bar P00025 4mm T-Bar
3 1 V00093 7.9mm Tommy Bar V00091 9.5mm Tommy Bar
4 1 V00991 Wood Screw V00991 Wood Screw
51-Insert VM90-100 -Insert VM120-150
6 2 P00719 M4 x 8 Screw, Socket Flat Head P00719 M4 x 8 Screw, Socket Flat Head
71 V00178 VM100 Backing Plate V00178 VM120 Backing Plate
81P00249 50mm External Circlip P00251 60mm External Circlip
9 2 P00591 M5 Dowel Pin P00591 M5 Dowel Pin
10 1V01000 VM100 Scroll V01001 VM120 Scroll
11 1 P00972 Chuck Body, M40x2 P00997 Chuck Body, M45x2
12 2 V00900 VM100 Pinion V00901 VM120 Pinion
13 1 P00598 Roll Pin Dia 3 x 10mm P00599 Roll Pin Dia 4 x 12mm
14 1 V00637 VM100 Backing Jaws V00670 VM120 Backing Jaws
15 4 V00657 VM90-100 Standard Jaws V00695 VM120-150 Standard Jaws
16 8 P00720 M5 x 12 Screw, Socket Flat Head P00725 M6 x 12 Screw, Socket Flat Head
1
2
3

Vicmarc Uni-Chuck
P9
OPERATION
VM150
The VM150 Chuck is a new and innovative
patented design with many exceptional
features for the professional turner or
the serious hobbyist. Jaws and inserts are
compatible with the VM120 but the backing
jaws have been made larger and stronger to
withstand very heavy use.
The VM150 is ideal for use on 400mm (16”)
capacity lathes or larger.
The basic chuck includes: chuck body,
one tommy bar, screw point, 2 x allen keys,
and the owners manual.
VM150 Features
Quick Action
Fine Adjustment
(once locked)
Locking Pinion
for Fine Adjustment
Q
The VM150 is a revolution in chuck design from Vicmarc. To save you time and energy
this chuck has two actions - one to rapidly open and close the chuck as though it was lever
operated (fully open in 3 revolutions), the other to tighten using the ‘T’ Key as you would
in a standard key operated scroll chuck. To switch from lever operated to key operated,
line up the dots as shown above and rotate the locking pinion using the 10mm T-bar
(supplied) Turn clockwise to engage and anti-clockwise to disengage.

Vicmarc Uni-Chuck
PARTS LIST
ITEM QTY PART NUMBER DESCRIPTION
18 V00997 M6 x 12 Screw, Socket Flat Head
24V00695 Jawset, VM120/140 Standard
31V00697 Backing Jawset
41 P00737 M3 x 5 Socket Head Cap Screw
51 Chuck Body, VM150
61V01001 Scroll
71 M5 x 12 Ball Catch
8 1 V00886 Locking Pin
91 Locking Pinion
PARTS LIST
ITEM QTY PART NUMBER DESCRIPTION
10 3 P00738 M5 x 5 socket set screw
11 3 P00590 Pin, Dowel 4x25
12 2 V00901 Pinion
13 1 Chuck Housing, VM150
14 1 P00250 55mm external circlip
15 1 P00028 10mm T-Bar
16 1P00025 4mm T-Bar
17 1 V00091 9.5mm Tommy Bar
18 1V00991 Chuck Wood Screw
18
5
6
12
13
14
15
16
17
7
9
8
3
2
1
4
Compatiable with VM120/140 Jaws
10 11
P10
OPERATION

Vicmarc Uni-Chuck
P11
MAINTENANCE
VM150 Chuck Accessories
Before undertaking any maintenance work to the VM150 chuck please familiarise yourself
with the individual parts and the correct terminologies.
VM150 Backing Jaw Indentification
Jaw 1 Jaw2 Jaw 3 Jaw 4
VM150 Scroll
Scroll, Face Up
Scroll, Face Down
VM150 Pinions
Pinion Dowel
Each jaw should be individually numbered. Should the numbers become obscured the jaws
can be easily indentified by the scroll patterns shown below.
To p
Bottom

Vicmarc Uni-Chuck
P12
VM150 Dismantling
To begin dismantling the VM150 chuck, place it on a clean bench with the back
facing up. 1 Remove the circlip. 2 Turn the chuck over so that the jaws are now
upright. Undo and remove the stop screw situated by jaw two. 3Slide all the
jaws out. 4Pull off the frontplate to show the inside of the chuck. The scroll
can then be removed from the backplate. 5 To remove the pinions from the
backplate first remove the grub screw that holds the dowel in, then turn the
back plate so that the dowel that holds the pinion is facing downwards. 6Gently
tap the back plate with a soft hammer until the dowel drops out. You may then
remove the pinion.
123
456
MAINTENANCE
VM150 Back Jaw Mounting Sequence
All the backing jaws are numbered to ensure
easy assembly. The number two jaw is where
the stop screw is as pictured on the left.
Before commencing it is better to orientate
the chuck so that the stop screw is on
your left. Then begin to feed the jaws on
from No.1 at the top and continue in an
anticlockwise direction as shown below.
Stop Screw
Jaw 1 position
Jaw 1 Jaw 1
Jaw 1
4
3
2
1

Vicmarc Uni-Chuck
P13
VM150 Reassembling
Make sure that all the components have been thoroughly cleaned and re greased
before re assembly. 1.Place the front plate face down on a clean workbench.
Then making sure the scroll face is pointing downwards with the gear (or gear
teeth) facing upwards, drop the scroll into the body. 2. Put the backing plate on
- do not force this together as the gear may be damaged. Place the allen key into
the pinion and slightly rotate until the teeth mesh and the circlip groove becomes
visible. 3. Replace circlip. 4. Turn over the chuck. Then rotate the scroll until the
start of the scroll thread is in the number one position as shown in picture.
5. Replace jaw number 1, rotate 1/4 revolution anticlockwise, replace jaw
number 2, rotate 1/4 revolution and so on until all the jaws are replaced. 6.
Once the scrolls have been replaced, rotate the allen key until the screw hole at
jaw number two becomes visible. Screw in the stop screw ensuring that it is not
over tightened.
MAINTENANCE
Stop Screw
Jaw 1 position
Jaw 2 Jaw 4
Jaw 3
12
34
56

Vicmarc Uni-Chuck
P14
Step Jaws
25mm Jaws
Bowl Jaws
Step Jaws, designed by the famous
Australian woodturner and author
Richard Raffan, are used for holding a
range of spigot sizes with minimum jaw
movement and without the necessity to
change the jaws. Boxes are easily turned
using the step jaws. The bottom can be
turned by holding the rim without leaving
unsightly pressure marks.
These jaws are used for expansion into
small recesses and for firm holding of
fine spindle work, such as earrings, chess
pieces etc. They are ideal for turning salt
and pepper shakers. To turn very small
articles, the jaws can be unscrewed and
the backing jaws only can be used.
The adjustable jaws allow you to re-
chuck bowls for finishing the bottom or
do light clean-up work on the foot of
the bowl. To mount the bowl, the bowl
is reversed and held by the rim, either
internal or external, with 8 unique soft
plastic stoppers which are mounted
on the face of the jaws.The numerous
mounting holes on the face of the jaws
allow you to locate the stoppers in any
number of positions. The range of sizes
listed on pages 18 and 19.
JAW STYLES and ACCESSORIES
This is a sample of the Vicmarc chuck jaws and accessories. For the full range see pages 18
to 19 to find the jaws that suit your requirements. These jaw styles suit all chucks types.

Vicmarc Uni-Chuck
P15
Long Nose Jaws
Face Plate Rings
Shark Jaws
These jaws allow better access between
the chuck body and the rear of the
workpiece. They are also very practical
when pre-turned workpieces or long
workpieces have to be refastened. For
example, when turning serviette rings or
remounting rough turned work.
These can be used instead of the
traditional faceplate. They facilitate
remounting of prepared blanks by
mounting directly onto the chuck jaws.
Also can be used for turning green wood
which will require returning later on.
Fit standard jaws supplied on chuck.
Shark jaws are so called because of
their serrated inner and outer jaw
surfaces. These extended jaws provide
an aggressive hold. They hold cylinder
spigots much more safely than standard
jaws. They are easier and faster than
traditional jaws used to turn long
workpieces.
Available in 48mm to 88mm for the
VM90 and VM100, 55mm to 130mm for
the VM120, VM140 and VM150.
JAW STYLES and ACCESSORIES

Vicmarc Uni-Chuck
Dovetail Jaws
Multi - Purpose Jaws
3 - in - 1 Screw Face Plate
Dovetail jaws are designed for mounting
bowls by expanding into a recess or
by clamping onto a spigot. The size
indicated is the outside measurement of
the jaw face when fully closed. Dovetail
jaws provide approximately 25mm of
expansion beyond their specified size.
By removing one or more of the dovetail
segments from these jaws, they are
adaptable to a variety of uses. The wide
range of expansion and contraction
of the Uni-Chuck provides for unique
adaptability when using these jaws.
This screw chuck has three alternative
diameters of 50mm, 75mm and 100mm
to give optimum support to any size
of work. Made from K1045 medium
tensile steel. Fitted with the Glaser
screw. Fits most lathes. Alternative
thread sizes available by using Vicmarc®
chuck inserts. Some direct threads also
available.
P16
JAW STYLES and ACCESSORIES

Vicmarc Uni-Chuck
P17
Soft Jaws
Vacuum Plate
Would you like to turn your own custom
made jaws to suit your work piece?
Now you can do it with the all new
Vicmarc Acetyl Soft Jaws. They are a
convenient and simple to use accessory.
As the jaws can be turned precisely to
suit the job, the work piece will always
be true and concentric. Jaws can also be
drilled, sawn or tapped. Two sizes are
available - 125mm and 150mm.
This device has been designed as an aid
to woodturning. It enables an item to
be re-mounted on the lathe for finishing
without risking further holding marks.
This device can be fitted directly into a
Vicmarc® chuck via the standard jaws,
or an insert can be supplied as an extra
to allow mounting directly onto the
spindle. Size - 300mm.
All measurements listed refer to the
outside diameter.
JAW STYLES and ACCESSORIES
Soft Jaws
Vacuum Chuck
Precision machined cast aluminium. Each
cylinder includes two soft ‘o’ ring seals
for internal or external pickups.
This unit works in conjunction with
the Vacuum Plate, fitted with a rotary
vacuum adaptor that connects to a shop
or domestic vacuum. The rotary adaptor
is fitted with two ball bearings and lets
the lathe spindle turn freely while the
hose and connection remain stationary.



Vicmarc Uni-Chuck
The Vicmarc®Guarantee
Vicmarc Machinery, manufacturers of Vicmarc machine tools,
hereby guarantee the purchaser of the Uni - Chuck that the chuck
was precision engineered from the finest materials available and
was thoroughly inspected and tested before leaving the factory.
If, within 12 months following the date of delivery, the chuck is
proven to have been defective as a result of faulty materials or
workmanship, Vicmarc Machinery will repair or replace the chuck
free of charge. This guarantee is subject to the following conditions:
1. The chuck shall be returned to Vicmarc Machinery within 12
months with a brief description of the complaint.
2. The name and address of the purchaser, together with the
date of purchase and supplier details shall accompany the parts.
3. Vicmarc Machinery will accept no responsibility whatsoever
under the guarantee or otherwise if the chuck is not used
strictly in accordance with the instructions supplied, or if the
fault can reasonably be explained by carelessness or
negligence.
4. The purchaser is responsible for all costs incurred in
transport and packaging to and from Vicmarc Machinery.
5. In the case of accident, liability is expressly excluded when
the chuck is tampered with or altered without authorisation.
Overseas purchasers are advised to obtain local guarantees
from their Uni - Chuck agent. Conditions may vary to those
detailed above.
Distributed by:
Vicmarc Machinery Pty Ltd
52 Grice Street Clontarf QLD 4019 Australia
Phone (07) 3284 3103 Fax (07)3283 4656
Int Ph 61-7 3284 3103 Int Fax 61-7 3283 4656
Aug 10 Edition
This manual suits for next models
4
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