I. Bearing Assembly
The Teres bearing was designed to have a
lot of viscous damping. This damping
helps swamp the effects of stylus drag,
resulting in better speed stability. For this
reason relatively heavy oil (10 weight) is
provided. With this oil the bearing will
turn smoothly but there will be a lot of
resistance. This is by design.
Please read this information carefully
before assembling your bearing. The
Teres bearing has been machined with
very close tolerances. The radial
clearance in the bearing is only 4 to 5 ten-
thousandths. This tight tolerance results
in superb stability reducing rocking to
microscopic levels. However, with these
tolerances it is imperative that the
bearing is clean and that proper
procedure is used for assembly. The
objective is to have the bearing
completely full of clean oil, including the
recess in the top of the bearing housing.
If air becomes trapped in the bearing it
will not seat properly. The bearing must
be assembled dry to avoid trapping air.
The procedure:
1.
Clean the bearing housing and spindle
thoroughly. Wiping down the bearing
surfaces with rubbing alcohol on paper
towel works well.
2.
Fill the recess in the bottom of the
spindle with oil and press in the ball
bearing. This displaces air in the recess
and will hold the ball bearing in place.
Be sure to completely wipe away any
excess oil.
3.
Place 3 to 4 drops of oil into the
bottom of the bearing housing.
4. If not already installed place the brass
thrust plate in the bottom of the
bearing housing with the white Delrin
button facing upward. The thrust plate
needs to be held flat as it is lowered
into the bearing. A simple method is to
attach a small loop of tape to the end of
a pencil. Then stick the thrust plate to
the pencil and lower it in place. Be
sure that the Delrin button is facing up!
5.
Carefully dispense 5.0ml of oil into the
bearing housing without getting any oil
on the sides of the bearing.
6.
Insert the spindle into the bearing. The
spindle will stop about 1/2" before it is
fully seated.
7.
Install the platter on the spindle. The
platter is very heavy and will require
two people to install. Inflate the
provided air jacks so that they are
about 1” thick. Place the air jacks on
both sides of the base under where the
platter will go. Orient so that the tubing
will not be under the plater. With two
people carefully lower the platter so
that it rests on the air jacks. Slowly let
