SPEX SamplePrep 8000M MIXER/MILL User manual

203 Norcross Ave., Metuchen, NJ 08840
1-800-LAB-SPEX (1-800-522-7739) ext 465
8000M MIXER/MILL®
OPERATING
MANUAL
(Serial Number 03009 and Higher)

8000M Mixer/Mill
TABLE OF CONTENTS
SECTION DESCRIPTION PAGE
1. Introduction..................................................................................................................................3
2. Specifications...............................................................................................................................4
3. Unpacking....................................................................................................................................5
4. Setting Up ....................................................................................................................................6
5. Operation......................................................................................................................................8
6. Maintenance...............................................................................................................................10
7. Accessories ................................................................................................................................11
8. Parts List & Item Locator..........................................................................................................15
9. Assembly Diagrams & Parts.....................................................................................................17
10. Trouble Shooting.......................................................................................................................21
11. Warranty.....................................................................................................................................22
Page 2 of 2 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
1.0 INTRODUCTION
The SPEX CertiPrep 8000-series Mixer/Mills are efficient, compact laboratory mills capable of
pulverizing samples in the 10-gram range. Functionally described as shaker mills or high-energy
ball mills, these Mixer/Mills shake containers back and forth approximately 1080 cycles per
minute. These multi-purpose mills are capable of reducing hard, brittle samples to analytical
fineness, blending powders, making emulsions, and performing mechanical alloying.
The vial, which contains a sample and one or more balls, is shaken in a complex motion that
combines back-and-forth swings with short lateral movements, each end of the vial describing a
figure-8. The length of that swing is the same as the internal length of a standard 8000 series vial,
about two inches. With each swing the balls impact against one end of the vial, simultaneously
milling the sample to a powder and blending it. Because of the amplitude and velocity of the
clamp’s swing, each ball develops fairly high G-forces, enough to pulverize the toughest rocks,
slags and ceramics.
The single-clamp 8000M Mixer/Mill, known simply as “the Spex Mill” to thousands of users,
has served spectroscopists and analytical chemists for over forty years. The clamp mechanism
has changed little since the earliest versions, simply because it has proven extremely durable.
Many of the earliest 8000 Mixer/Mills are still in service. An electronic 100-minute timer has
replaced the original wind-up timer and the mill’s safety features have been improved: the lid is
now locked down until the clamp stops moving.
8000-series Mixer/Mills have been used for pulverizing rocks, minerals, sand, cement, slag,
ceramics, catalyst supports, and hundreds of other brittle, often hard samples. Early in its market
introduction, the 8000 was used to grind samples, then blend them with graphite for arc/spark
spectroscopy; now similar samples are ground, then blended with binder before being pressed
into sample discs for XRF. The vigorous motion of the clamp is also excellent for making
emulsions, such as paints, inks and pharmaceuticals. 8000M Mixer/Mills have also achieved
notoriety for their ability to mechanically alloy small quantities of materials in fields such as
superconductor research.
8000M
Page 3 of 3 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
2.0 SPECIFICATIONS
Type of mill: high energy ball mill, a.k.a. shaker mill
Grinding Containers: canister type vial with one or more balls
Weight (empty, without vial): 76 lbs. (35 Kg)
Dimensions: 19 in (48 cm) x 14 in (36 cm) x 18 in (46 cm)
Grinding Vials Available: Plastic Vials Available:
8001 Hardened Steel Vial Set. 3111 Polystyrene Vial with Cap
8003 Alumina Ceramic Vial Set 3116 Polystyrene Vial with Cap
8004 Tungsten Carbide Vial Set 6133 Polystyrene Vial with Cap
8005
Zirconia Ceramic Vial Set 6133PC Polycarbonate Vial with Cap
8006 Methacrylate Vial Set 6134 Polystyrene Vial with Cap
8007 Stainless Steel Vial Set 6135 Polystyrene Vial with Cap
8008 Silicon Nitride Vial Set 8002 Polystyrene Vial with Cap
8009 Round-Ended Hardened Steel Vial Set 8006 Methacrylate Vial Set
8014 Agate Vial Set
3114 Stainless Steel Vial Set
3117 Hardened Tool Steel Vial Set
3127 Hardened Tool Steel Vial Set
3118 Agate Vial Set
5004 Tungsten Carbide Lined Vial Set
Note: in practice, the sample capacity of any particular vial depends on the properties of the
sample, particle-size requirements, and other considerations.
Electrical specifications: available in 115 60Hz or 230V 50Hz.
Meets European CE Directives
Cord: 115V 60HZ version, 3-prong grounded cord supplied.
230V 50HZ version, with CEE 7/7 two-prong plug supplied.
NOTE: Operator is responsible for supplying alternate line cord/plug if required.
Fuses:115V 60HZ version, 8-amp slow-blow fuse in the power input module
230V 50HZ version, 5-amp slow-blow fuse in the power input module
Motor: 1/3 Hp, 1725 RPM (115V), 1425 RPM (230V)
Timer Range: Factory setting 0-100 minutes; can be extended by user to 1000 minutes
Safety Features:
Lid Interlock prevents mill from running if lid is not closed,
locks down lid until clamp stops moving
Page 4 of 4 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
3.0 UNPACKING
Any visible damage to the shipping container should immediately be reported to the carrier. If
there is no visible damage, remove all packing documents from the exterior of the box, and after
completion of your inspection, file in your records.
Open the top of the shipping box. Remove the foam packing material. Carefully grasp the lifting
straps and remove the unit from the carton (the unit weighs 76 lbs, so use proper lifting
techniques). Place the mill on the bench top where it will likely stay, remove the straps and open
the lid. Look for any hidden damage that may have occurred during shipping. Save the box for
possible future use.
Follow a logical sequence of steps as you inspect the unit (see Figure 2). For example:
1. Inspect the outside of the cabinet for any visible damage.
2. Are any of the switches damaged?
3. Is the latch mechanism damaged?
4. Inspect the interior of the mill.
5. Is the motor damaged?
6. Do all the springs and mounting points seem okay?
7. Inspect the accessory pack.
8. Compare contents of the shipping box with the packing list.
If everything seems to be okay, proceed to the next section, “SETTING UP.”
Lid Assembl
y
Control Panel
Electrical Input
Module at bac
k
(
Fi
g
ure 1
)
8000M Mixer/Mill
Shipping bolts
underneath the
unit must be
removed (see
Setting Up
Section for
details).
Page 5 of 5 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
4.0 SETTING UP
Open the cabinet and remove the plastic bag(s) with the operating manual, spare fuses, rubber-
lined coil springs, and spacer (aluminum tube).
Tilt the cabinet, and remove the two bolts on the bottom. They hold the floating base plate to the
cabinet for shipping. Save the bolts and washers in case you have to ship or transport the mill.
Place the spacer over the right rear tapered post. (You may want to remove the plastic ties on the
posts.) Then push the springs down on the posts – the long springs in front, and the two shorter
springs in the back. Lift the floating base plate and place it on top of the springs; each bracket
has a pin that fits into the spring/hose.
Cut the tie that holds down the clamp, and make sure the control cable is plugged into its
receptacle on the right inner side of the cabinet.
4.1 Electrical Hookup
The power input module, a fuse tray, and the On/Off switch (controlling power to the motor and
timer), are located at the back of the unit. The On/Off switch is a rocker switch marked with a
zero (0) and a one (1). To turn on the power, press the one (1) side of the switch. Before
plugging in the mill, set the power to Off by pressing down the zero (0) side of the On/Off
switch, then plug the power cord into the mill’s power inlet. Plug the mill into a standard 3-prong
grounded electrical outlet; we recommend that it be a fused 20-amp circuit for the 115V/60 HZ
version. The mill uses 8-amp “slow-blow” fuses. The 230 V 50 HZ model uses 5-amp “slow-
blue” fuses and comes with a European-style polarized plug; outside of Europe the cord should
be adapted to local requirements.
The fuse tray is next to the power input module and includes two fuses. It can be opened with a
knife-blade or small screwdriver.
4.2 Standard Safety Features
4.2.1 Manual Lid Latch - The lid has a manual latch, just below the lid handle, which should be
closed whenever the mill is run. To close the latch, pull the tab up and out, engage it with the lid,
and push the tab down. To open the latch, pull the tab up and out.
4.2.2 Gas Cylinder - When you raise the lid all the way, the gas cylinder braces the lid open,
and keeps it from being closed accidentally or abruptly. However, when you raise or lower the
lid you should always keep your hand on the handle.
4.2.3 Clamp Locking Tab - The clamp is opened and closed by a knob on the end of its
threaded shaft. The locking tab is on the shaft between the knob and the clamp. Whenever the
clamp is closed on a vial, lock the clamp by tightening the locking tab clockwise against the
clamp crossbar. When opening the clamp, first loosen the locking tab.
Page 6 of 6 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
4.3 CE Safety Features
CE directives require that electricity to the motor and timer be interrupted whenever the lid is
open, and that the clamp arm must have stopped completely before the lid can open.
4.3.1 Safety Interlock - The Safety Interlock cuts off power when the lid is opened; the switch is
under the lid on the upper right-hand side. Do not disconnect or damage this switch!
4.3.2 Time-Delay Latch - The Time-Delay Latch keeps the lid latched while the mill is
running, and for 10 seconds after the timer reaches zero. The Time-Delay Latch consists of two
pins, one on either side of the manual lid latch, powered by a solenoid to engage two holes in the
lid. When the mill is started the Time-Delay Latch locks the lid immediately, and there is a delay
before the motor starts. When the timer cycles to zero, the motor stops and the latch stays locked
for 10 seconds. The latch locks and unlocks with an audible click. After a run always wait for
the click before undoing the manual lid latch and opening the lid.
NOTE: Never try to force open the lid before the Time-Delay Latch unlocks.
Pause/Stop
Start
Minutes
Seconds
4.4 Control Panel
The four-digit timer is used to set the exact running time of the mill. The 8000M timer’s factory-
set range is 00:01 (one second) to 99.59 (99 minutes and 59 seconds). The default setting, which
always appears when the power is first switched on, is 01:00, or one minute and no seconds.
Page 7 of 7 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
4.4.1 Electronic Timer - the two buttons underneath the display change the timer setting. The
left-hand button advances the minutes and the right-hand button advances the seconds. To
advance a setting one digit at a time, push a button and release it. If you hold a button down the
setting will advance slowly for a few seconds, then rapidly. The minute setting will advance
from 00 to 99 to 00 again, and the seconds setting from 00 to 59 to 00 again. A setting is
retained only until the power is switched off.
4.4.2 Start Button - Once the timer is set (and the vial is clamped and locked in place, and the
lid is shut and latched) the mill can be started by pushing the Start button. The timer counts
down as the mill begins its run, so that the timer displays the time left to run in a grinding cycle.
When the timer reaches zero (00:00) the motor stops. After a 10 second delay, the Time-Delay
Latch opens, and releases the lid.
4.4.3 Stop/Pause Button - To interrupt (not cancel) a cycle, push the Stop/Pause button once.
The motor will stop, and the display will flash the time left in the cycle; this is the Pause
Condition. During a Pause Condition the lid cannot be opened. This Pause condition is
indefinite, but the run cycle can once again be resumed at the point where it was stopped, by
once again pressing the Start button. To CANCEL a cycle in progress, press the Stop/Pause
button TWICE. This will stop the motor and re-set the timer, and after 10 seconds the Time-
Delay latch will disengage, allowing the lid to be opened.
5.0 OPERATION
Plug the power cord into the mill’s electrical input module, and then into an approved grounded
outlet. Ensure that the On/Off switch (next to the power inlet) is in the off position, before
plugging the unit in. After the unit is plugged in, switch the power on by means of the rocker
switch.
Put your sample in the vial, and place the vial in the clamp. Tighten the clamp with the knob, and
lock the clamp with the locking tab. Close the lid and fasten down the lid with the manual latch.
Adjust the timer setting as described in section 4.4.1 Electronic Timer and start the mill by
pushing the Start button.
NOTE: When the 8000M timer cycle has ended and the motor stops, wait until the lid latch
releases before opening the lid.
Loosen the locking tab, then open the clamp and remove the vial.
To stop the mill during a run (e.g., an emergency stop), push the Stop/Pause button twice, or cut
off power by pressing the power switch on the back of the mill to 0. If you want to interrupt a
run but keep the current position in the timer sequence, push the Stop/Pause button once only,
and the run will pause for an indefinite period of time. After a pause in the run, the milling cycle
can be resumed once again by pushing the Start button. It is important to note that the lid latch
will not release when the mill is in the Pause Condition.
Page 8 of 8 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
5.0 OPERATION
(Cont’d) 5.1 MIXING AND GRINDING
Mixing is usually done in a plastic vial with plastic balls. Depending on the nature and amount of
material to be mixed, one or several balls may be used. With a small amount of material and
more than one or two balls, the impact may break the bottom of the plastic vial, so keep the
number of balls to a minimum. Plastic vials and balls can also be used to grind soft metals (e.g.
antimony), carbon, and other easily friable materials. If the Mixer/Mill clamp swings wide and
hits the motor when a plastic (lightweight) vial is used, it may be necessary to use the 8012
Adapter, which adds weight to the clamp and prevents extra-wide oscillation.
Grinding is done in the metallic and ceramic containers: steel, tungsten carbide, alumina,
zirconia, agate, and silicon nitride. Dry grinding is the simplest approach. For samples that cake
during mixing or grinding, a grinding aid may be necessary. Water, alcohol, or other liquids may
be used. We recommend Vertrel XF (cat. no. 3650), a fluorocarbon fluid that does not
chemically affect the sample and quickly evaporates after use. Water may be dried out
afterwards by heating plastic vials in a low-temperature oven.
The criteria for container selection are usually those of grinding efficiency vs. contamination;
steel and tungsten carbide grind more rapidly than ceramics or agate, but contaminate more.
Most 8000-series vials accept 3 to 10 ml of sample for grinding, while a typical mixing load is
up to 25 ml, or about 40% of the vial’s volume. If a sample is not being ground fine enough, one
can a) decrease the amount of sample, b) increase grinding time, c) add a grinding aid or a liquid.
Wet grinding keeps the sample from caking and will give a smaller final particle size, but there
are handicaps: 1) an extra drying step is required; 2) the fluid used for wet grinding must be
chosen carefully not to alter the sample or attack the container; 3) not all the vials are leak-proof.
The steel, tungsten carbide, and plastic vials have screw tops, and are more or less watertight.
The alumina vial (8003) has optional clamps (8014) for slurry grinding.
Avoid grinding small loads in brittle containers such as alumina and agate. If there is not enough
material to cushion the impact of the balls, they will generate excess contamination and can in
extreme cases chip the container. Always use grinding balls that match the material of the
container, e.g. steel balls for a steel container, agate balls for an agate container, etc. This will
limit contamination. An inappropriate choice of balls, such as tungsten carbide balls in an
alumina container, can damage the container.
Two balls are standard for most grinding containers, though some users feel that only one ball
should be used in the most brittle containers (alumina and agate). Three balls can hasten grinding
in the strongest containers, the steel ones.
When using grinding containers with threaded caps, be careful to keep the threads clean. Over
time, if care is not exercised to maintain the threads clean, as sample accumulates in the threads
it can jam the caps. Also be careful not to drop these caps on edge, as if they are knocked out of
round they can be very difficult to use.
Page 9 of 9 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
6.0 MAINTENANCE
The 8000M MIXER/MILL has been designed to provide trouble-free operation over a long period
of time. To assure proper performance, perhaps the most important factor is overall cleanliness.
Any spilled powders or liquids should be wiped up immediately with a damp cotton cloth. This
should also be done occasionally after extended periods of use. This should minimize the buildup of
any powders, mold/mildew, or unsightly gunk over the life of the unit.
To maintain the exterior of the unit, first disconnect the 8000M MIXER/MILL, then an occasional
spraying and wiping down with a mild window cleaner or similar product will be sufficient.
NOTE: the mill should be disconnected from power source FIRST, before any cleanup or
maintenance work is to be performed on the mill.
The threads of the clamp screw should be kept clean to avoid jamming. The foam pads in the
clamp should be replaced when damaged, worn, or missing.
The flywheel and motor pulleys should be checked from time to time to make sure that they are
tight on their shafts; if either pulley loosens it must be realigned with the other, and the set
screws tightened.
The sealed ball bearings in the clamp and pillow block assemblies are lubricated for life and
require no maintenance. The shaft bearings of the motor are lubricated for ten years of
intermittent use or one year of heavy use.
The clamp retaining spring assembly includes two open ball-and-socket joints that are lubricated
with heavy-duty automotive-type lithium grease. If these bearings dry out they should be taken
apart and re-greased.
The 8000M Mixer/Mill is intended for intermittent use with running times that are typically 5 to
20 minutes long. Under those conditions it should run for many years without maintenance other
than that described above. Prolonged periods of continuous running (over 100 minutes as in
mechanical alloying), might require re-setting the timer and may void the warranty.
SPEX CertiPrep warrants the 8000M Mixer/Mill against defects of materials and workmanship
for a period of one year from date of shipment. There is no warranty against breakage for
tungsten carbide, ceramic, and agate vials.
If you have any questions about the operation and maintenance of your 8000M Mixer/Mill,
please contact our specialists by phone at 1-800 LAB-SPEX (522-7739) or 732-549-7144, or by
e-mail at [email protected]
Page 10 of 10 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
7.0 Accessories: Grinding/Mixing Vials
(If not included in your Order, they are Available for Purchase at Additional Cost)
8001 Hardened Steel Vial Set
Vial size 2 1/4 in. dia. x 3 in. Vial body and cap liner of
hardened tool steel. Set includes screw-on cap with O-
ring to allow wet or dry grinding/ mixing, two 1/2 in. and
four 1/4 in. steel balls. Grinding load 3–10 ml; mixing
load approx. 25 ml.
8003 Alumina Ceramic Vial Set
For dry grinding/mixing. Vial size 2 1/4 in. diameter x 2
3/4 in. High purity 99.5% alumina ceramic vial body and
two slip-on caps with one 1/2 in. ball; set includes eight
corprene gaskets. Grinding load 2–8 ml; mixing load
approximately 20 ml.
Note: Although the various accessory packages are shown for your information, your unit will
arrive only with the accessory package that you have ordered.
8015 Clamp for 8003
Clamps permit slurry grinding in 8003 vials; sold in
pairs. One pair required for each 8003.
8004 Tungsten Carbide Vial Set
For wet or dry grinding/mixing. Vial size 2 1/4 in.
diameter x 2 1/2 in. Tungsten carbide-lined body, two
screw-on tungsten carbide-lined caps, two 7/16 in.
tungsten carbide balls, eight corprene gaskets. Grinding
load 3-10ml, mixing load approximately 25ml.
Page 11 of 11 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
7.0 Accessories: Grinding/Mixing Vials
(If not included in your Order, they are Available for Purchase at Additional Cost)
8005 Zirconia Ceramic Vial Set
Vial size 2 1/2 in. diameter x 2 11/16 in. Solid zirconia
ceramic vial, cap, and two 1/2 in. balls; seven corprene
gaskets. Grinding load approximately 2-8ml; mixing load
approximately 20ml.
8007 Stainless Steel Vial Set
Vial size 2 1/4 in. diameter x 3 in. Vial body and cap
liner made of hardened 440C stainless steel. Two 1/2 in.
and four 1/4 in. stainless steel balls are included. Set
includes screw-on cap with O-ring to permit wet or dry
grinding/mixing. Grinding load 3–10 ml; mixing load
approx. 25 ml.
8008 Silicon Nitride Vial Set
Vial size 2 1/2 in. diameter x 2 11/16 in. solid silicon
nitride vial, cap, and two 1/2 in. balls; seven corprene
gaskets. Grinding load approximately 2-8ml; mixing load
approximately 20ml.
8009 Round-Ended Hardened Steel Vial Set
Vial size 2 3/8 in. diameter x 3 in. Hardened steel vial
body has grinding chamber with rounded ends for more
efficient grinding/mixing. Includes screw-on cap and O-
ring for wet or dry use, two 1/2 in. and four 1/4 in. steel
balls. Grinding load 3-10ml; mixing load approximately
25ml.
To Order any of these accessories, call Customer
Service at 800-522-7739 or 732-549-7144
Page 12 of 12 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
7.0 Accessories: Grinding/Mixing Vials
(If not included in your Order, they are Available for Purchase at Additional Cost)
8014 Agate Vial Set
For dry grinding and mixing. Vial size 2 1/4 in. diameter
x 2 3/4 in. All-agate vial body, two slip-on caps, two 1/2
in. agate balls, and eight corprene gaskets. Grinding load
3-8ml; mixing load approximately 20ml.
8006 Methacrylate Vial Set
2 1/4 in. diameter x 2 5/8 in. Vial body of heavy-gauge
methacrylate with methacrylate-lined aluminum screw-
on cap. Set includes corprene gasket, two 8006A (1/2 in.)
and four 3112 (3/8) in. plastic balls. Allows grinding of
soft materials without metallic contamination.
3114 Stainless Steel Vial Set
1/2 in. diameter x 1 in. long. Made of 303 stainless steel;
includes slip-on cap and 1/4 in. steel ball; grinding load
0.2-0.6 ml, mixing load 1ml.
3117 Hardened Tool Steel Vial Set
1/2 in. diameter x 1 in. long. Made of Worpliss tool steel.
Includes slip-on cap and 1/4 in. steel ball. Grinding load
0.2-0.6ml, mixing load 1ml.
Page 13 of 13 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
7.0 Accessories: Grinding/Mixing Vials
(If not included in your Order, they are Available for Purchase at Additional Cost)
3127 Hardened Tool Steel Vial Set
3/4 in. diameter x 1 7/8 in. long. Made of Worpliss tool
steel; includes center cylinder with two slip-on caps and
1/4 in. steel ball. Grinding load 0.5-1.0ml, mixing load
2ml.
3118 Agate Vial Set
Handmade from flawless Brazilian agate; must be run
inside cushioned SPEX CertiPrep 6133 vial (included);
includes stopper and 1/4 in. agate ball. Grinding load 0.2-
0.6ml, mixing load 1 ml.
5004 Tungsten Carbide-Lined Steel Vial Set
3/4 in. diameter x 2 1/8 in. long. Includes two slip-on
Delrin caps with tungsten carbide inserts, six disposable
methacrylate center cylinders, and two 5/16 in. tungsten
carbide balls. Grinding load 0.5-1.5ml; mixing load 3ml.
6134 Plastic
6135 Plast
ic
8002 Plastic Vial
To Order any additional accessories, call Custome
r
Service at 800-522-7739 Ext. 465
Page 14 of 14 SPEX Certiprep 4.4.03
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8000M Mixer/Mill
8.0 PARTS LIST & ITEM LOCATOR
(See Diagram A, B, & C)
Item Part No. Description Location
1 33297 Clamp retaining spring assembly, including spherical bearings A, 17
2 22631 Aluminum Clad Plywood Base A, 17
3 53066 Foam Pad for #22631 A, 17
4 8000-13 Rubber-lined Coil Springs, set of 3 A, 17
5 8000-11 Z Bracket, set of 4 A, 17
6 8000M-15
Motor Replacement Kit (Motor, Wiring Harness & V-Belt -
Specify 115 or 230 volts) A, 17
7 51920 Motor Pulley A, 17
8 50123 V-Belt A, 17
9 22636 Flywheel Pulley A, 17
10 22600 Clamp, Pillow Block & Shaft Assembly A, 17
11 22966 Floating Base Plate, Aluminum A, 17
12 37483P Power Board B, 18
13 92941 Relay 115V B, 18
13 92942 Relay 230V B, 18
14 96004 AC Input B, 18
15 96005 Fuse Holder B, 18
16 93850 Fuse 8 Amp (115V) B, 18
16 93840 Fuse 5 Amp (230V) B, 18
17 92703 Power Switch B, 18
18 92910 Hinge Switch B, 18
19 38567 Gas Spring B, 18
20 51208 Handle B, 18
21 92701 Lever Switch B, 18
22 93965 Solenoid (115V) B, 18
22 92968 Solenoid (230V) B, 18
23 37483-D Display Board B, 18
24 22640 Ball Seat C, 19
25 60156 Retaining Ring for Ball Seat C, 19
26 21519 Spring for 33297 C, 19
27 33297R Pivot Assemblies (1 pair) C, 19
28 22601 Shaft D, 20
29 22602 Pillow Block without Bearings D, 20
Page 15 of 15 SPEX Certiprep 4.4.03
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8000M Mixer/Mill
8.0 PARTS LIST & ITEM LOCATOR
(Continued)
Item Part No. Description Location
30 92823
Crank for Clamp Screw (5/16" or 3/8") D, 20
31 37721
Screw for Clamp Assembly, 3/8" D, 20
32 37360
Tie Bar for Clamp, 3/8" hole D, 20
33 60427
Taper Pin for Tie Bar D, 20
34 37362
Lock Nut for Clamp Assembly, 3/8" D, 20
35 60152
C-Clip for Clamp Screws D, 20
36 53069
Foam Pad 1/8" x 2" dia. for Clamp D, 20
37 8000-14
Clamp Assembly, with bearings and eccentric, but without
#92823 Crank D, 20
38 37361
Rod for Clamp Assembly D, 20
39 37344
Eccentric for Clamp D, 20
40 50014
Ball Bearing for Pillow Block (2 required) D, 20
Page 16 of 16 SPEX Certiprep 4.4.03
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8000M Mixer/Mill
9.0 DIAGRAM A
(Base plate, motor, and clamp assembly)
Item Part No. Description
1 33297 Clamp retaining spring assembly, including spherical bearings
2 22631 Aluminum Clad Plywood Base
3 53066 Foam Pad for #22631
4 8000-13 Rubber-lined Coil Springs, set of 3
5 8000-11 Z Bracket, set of 4
6 8000M-15
Motor Replacement Kit (Motor, Wiring Harness & V-Belt –
Specify 115 or 230 volts)
7 51920 Motor Pulley
8 50123 V-Belt (3L210) for Mills after 78104
9 22636 Flywheel Pulley
10 22600 Clamp, Pillow Block & Shaft Assembly
11 22966 Floating Base Plate, Aluminum
Page 17 of 17 SPEX Certiprep 4.4.03
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8000M Mixer/Mill
9.1 DIAGRAM B
(View of cabinet from bottom)
Item Part No. Description
12 37483P Power Board
13 92941 Relay 115V
13 92942 Relay 230V
14 96004 AC Input
15 96005 Fuse Holder
16 93850 Fuse 8 Amp (115V)
16 93840 Fuse 5 Amp (230V)
17 92703 Power Switch
18 92910 Hinge Switch
19 38567 Gas Spring
20 51208 Handle
21 92701 Lever Switch
22 93965 Solenoid (115V)
22 92968 Solenoid (230V)
23 37483-D Display Board
Page 18 of 18 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
9.2 DIAGRAM C
(Clamp retaining spring assembly)
Item Part No. Description
24 22640 Ball Seat
25 60156 Retaining Ring for Ball Seat
26 21519 Spring for 33297
27 33297R Pivot Assemblies (1 pair)
Page 19 of 19 SPEX Certiprep 4.4.03
SN 03000 and Higher

8000M Mixer/Mill
9.3 DIAGRAM D
(Pillow block and shaft assembly)
Item Part No. Description
28 22601 Shaft
29 22602 Pillow Block without Bearings
30 92823 Crank for Clamp Screw (5/16" or 3/8")
31 37721 Screw for Clamp Assembly, 3/8"
32 37360 Tie Bar for Clamp, 3/8" hole
33 60427 Taper Pin for Tie Bar
34 37362 Lock Nut for Clamp Assembly, 3/8"
35 60152 C-Clip for Clamp Screws
36 53069 Foam Pad 1/8" x 2" dia. for Clamp
37 8000-14
Clamp Assembly, with bearings and eccentric, but
without #92823 Crank
38 37361 Rod for Clamp Assembly
39 37344 Eccentric for Clamp
40 50014 Ball Bearing for Pillow Block (2 required)
Page 20 of 20 SPEX Certiprep 4.4.03
SN 03000 and Higher