Jura NSK EX-6B User manual

IMPORTANT INFORMATION!!!
Thank you for Purchasing the JURA Art-graver System !
You are the lucky owner of one of our four machine;
# JURA Micromotor/ Micromotor only. Includes the micromotor bench top holder & holder
for handpiece.
# JURA Art-graver/ Engraving system only. Includes: 10 quick changes with colour coding,
set of gravers, micromotor bench top holder & holder for handpiece.
# JURA Art-graver PLUS/ Micromotor and Engraving system in one box. Includes: 10
quick changes with colour coding, set of gravers, micromotor bench top holder & holder for
handpiece.
# JURA Art-graver PRO: This system combines the Micromotor and Engraving system in
one box including the Hot Air and Cool Air guns***. Includes: 10 quick changes with colour
coding, set of gravers, micromotor bench top holder & holder for handpiece.
Please read this manual carefully for essential warranty instructions!!!
JURA Micromotor:
The new JURA Micromotor uses a high torque brushless micro motor combined with a slim
NSK E Type handpiece. This combination produces the necessary low speed torque that is
required for effortless and precise drilling in even the hard metals like platinum and titanium.
The NSK handpiece is slim like a pen, allowing for stress free work all day. The included
bench top holder for the cable, will prevent the cable from pulling and discomfort during
your work.
The torque produced is rated at 7.8 Ncm. What does that mean? That torque number means
you get consistent low speed drilling at your chosen speed. The motor doesn't "bog down"
and you are not constantly manipulating the foot control to maintain speed. It is exactly what
you need for all types of stone setting application. The precise application of speed and
torque for drilling in hard metals at low speed.
The JURA Micromotor has a digital readout that shows rpm speed by the 1000 rpm. It also
has a digital display for elapsed time that is used in factory production work or whenever
you need to know how much time was involved in a particular task. The speed is controlled
by a large dial in the center of the control box. The three control box functions are on/off,
hand speed control by dial/foot speed control by foot control and Forward/Reverse.
The brushless motor and the control box will allow speeds up to 25,000 rpm.
Jura’s advise on rpm; Cylinders & Tapered burs: 5000 - 6000 rpm / Drills & Ball burs: 3000
- 4000 rpm / Polishing: approximately 18,000 rpm
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Please take the following in account before using the NSK E-TYPE handpiece;
•To connect the motor and the handpiece,
align the positioning marks of the motor and
the handpiece, and insert straightly. To
disconnect, hold the front part of the motor
and the back part of the handpiece, and pull
out straightly. Do not connect or disconnect
the handpiece until the motor has
completely stopped.
•To mount the bur, insert it into the chuck
and turn the Bur Lock Ring in the direction
of the mark [C] until it clicks and the Black
Dots align (*See the picture below). To
remove the bur, turn the Bur Lock Ring in the
direction of mark [O] until it clicks. Most
common mistake is that people start working
in the middle position, between the lock and
unlock. Never do that!
•Never use bent, off-centered or damaged burs. Excessive loads generated by defective burs
will quickly damage ball bearings.
• This handpiece is designed for (dental) treatment and precision technical use. Longtime
excavation with high torque with thick burs such as 2,8mm up may cause a short life to the
handpiece chuck.
• Always insert a bur all the way into chuck. This will prevent “BUR- WALK-OUT”, and/or
damage to the ball bearing.
• Never operate Straight Nosecone without a bur or bur blank securely in place, or bur lock
ring at different positions.
• Make sure if the Os of the bur lock ring line up after fixing the bur. Rotating the bur in an
improper position may cause heat generation, which results in burns
JURA Engraving system:
What makes the JURA Artgraver special beyond the air compressor free feature? It's the
handpiece. The single handpiece can be quickly modified by switching out the piston to
allow for a wide variety of engraving styles from light bulino work to heavy engraving in
hard metals like steel and titanium.

•The handpiece comes with two pistons included, 4 and 6 grams. Depending on the type of
your work, the piston’s can be easily replaced by unscrewing the handle and removing the
spring.
•Left button “Power” on the control box regulates the stoke power of the engraving
handpiece. The right button “Speed” is responsible for the frequency of the stokes.
•By pressing the pedal, the handpiece will start exhilarating from 0 up. Increasing the speed
doesn’t mean you’ll get more power! Find the right speed for the chosen piston for your
particular kind of work.
JURA Hot-air Gun:
The difference between the Art-graver Plus & Art Graver PRO is that the PRO edition comes
with additional Hot Air Gun for heating and cooling your shellac or thermoloc without
burning it. The slim nose is suitable to work precisely on your piece while looking through
the microscope!
•This item does need a small compressor, only for the air guns.
Please take the following in account before using the JURA Hot Air Gun;
•Make sure that the JURA Hot Air Gun is properly connected to Air Supply and the
Compressor is switched on and set on minimum; 80 psi / 5,5bar! Beware, Lower air
pressure might damage/ burn the heating element. Never use the Hot-air Gun without the
minimum required air pressure!
•Cold Air: Pull the trigger half way.
•Hot Air: Pull the trigger all the way.
•Cool after heating: Let go of the trigger half way and wait for a few seconds until the air
start cooling down.
•The JURA Hot Air Gun comes standard with 4mm tube. Depending on your situation, you
might need a custom connector. Please contact your local hardware store for advice or
contact Jura at [email protected].
•Do NOT connect the Hot Air Gun to any other device rather than straight to the
Compressor or the JURA System!
JURA Air Gun:
The Art Graver PRO edition also comes with additional JURA Air blower. Very suitable for
cleaning your piece and bench from dust. This item does need a small compressor.
Product Note:
*** The Hot-air Gun & Air blower do require a small compressor. We advise to use the
JURA oil free minicompressor. Low noise level a. 45dB, this compressor is most silent in it's
category and very well suitable in a small workshop or even workplace at home!
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Please note that we don’t give any warranty when the instructions
above are not been followed properly!
Jura and his team wishes you many years of pleasant working with the
Art-graver System!
“Small advise on how to prepare your gravers”
We recommend to use
Set of Diamond Polishing Wheels
For shaping, polishing and cutting of
your gravers.
SG.DP.YW: Yellow /Fine
SG.DP.BE: Blue /Medium
SG.DP.BK: Black /Rough
SG.DP.CW: Cutting Wheel