RIKON Power Tools 50-142 User Manual

1”x42” Belt / 8” Disc Sander

Model: 50-142

Part # 50-142M1

Owner’s Manual

Record the serial number and date of purchase

in your manual for future reference.

Serial number:

Date of purchase:

For more information:

www.rikontools.com or [e-mail]

For Parts or Questions:

[e-mail] or 877-884-5167

Safety Warning

IMPORTANT! Safety is the single most important consideration in the operation of this equipment. The following

instructions must be followed at all times.

There are certain applications for which this tool was designed. We strongly recommend that this tool not be modied and/
or used for any other application other than that for which it was designed. If you have any questions about its application,
do not use the tool until you have contacted us and we have advised you.

General Safety Warnings

KNOW YOUR POWER TOOL. Read the owner’s manual carefully. Learn the tool’s applications, work

capabilities, and its specic potential hazards.

ALWAYS GROUND ALL TOOLS.

If your tool is equipped with a three-pronged plug, you must plug it into a three-hole electric receptacle.
If you use an adapter to accommodate a two-pronged receptacle, you must attach the adapter plug to a
known ground. Never remove the third prong of the plug.

ALWAYS AVOID DANGEROUS ENVIRONMENTS.
Never use power tools in damp or wet locations. Keep your work area well lighted and clear of clutter.

ALWAYS REMOVE THE ADJUSTING KEYS AND WRENCHES FROM TOOLS AFTER USE.

Form the habit of checking to see that keys and adjusting wrenches are removed from the tool before
turning it on.

ALWAYS KEEP YOUR WORK AREA CLEAN. Cluttered areas and benches invite accidents.

ALWAYS KEEP VISITORS AWAY FROM RUNNING MACHINES.

All visitors should be kept a safe distance from the work area.

ALWAYS MAKE THE WORKSHOP CHILDPROOF.
Childproof with padlocks, master switches, or by removing starter keys.

NEVER OPERATE A TOOL WHILE UNDER THE INFLUENCE OF DRUGS,
MEDICATION, OR ALCOHOL.

ALWAYS WEAR PROPER APPAREL.

Never wear loose clothing or jewelry that might get caught in moving parts. Rubber-soled footwear is
recommended for the best footing.

ALWAYS USE SAFETY GLASSES AND WEAR HEARING PROTECTION.
Also use a face or dust mask if the cutting operation is dusty.

NEVER OVERREACH.
Keep your proper footing and balance at all times.

NEVER STAND ON TOOLS.
Serious injury could occur if the tool is tipped or if the cutting tool is accidentally

2

ALWAYS DISCONNECT TOOLS.
Disconnect tools before servicing and when changing accessories such as blades, bits, and cutters.

ALWAYS AVOID ACCIDENTAL STARTING.
Make sure switch is in “OFF” position before plugging in cord.

NEVER LEAVE TOOLS RUNNING UNATTENDED.

ALWAYS CHECK FOR DAMAGED PARTS.

Before initial or continual use of the tool, a guard or other part that is damaged should be checked to
assure that it will operate properly and perform its intended function. Check for alignment of moving
parts, binding of moving parts, breakage of parts, mounting, and any other conditions that may affect its
operation. A guard or other damaged parts should immediately be properly repaired or replaced.

Special Safety Rules For Sanders

1. Do not operate this machine until you have read all of the following instructions.

2. Do not attempt to operate this machine until it is completely assembled.

3. Do not turn ON this machine if any pieces are missing.

4. If you are not familiar with the operation of the machine, obtain assistance from a qualied
person.

5. It is highly recommended that this machine be placed on a level surface.

6. Always wear protective eyewear prior to operating this machine.

7. Do not operate this machine if you are under the inuence of drugs and/or alcohol.

8. Remove all jewelry prior to operating this machine.

9. Do not wear any gloves while operating this machine.

10. Always make sure the power switch is in the OFF position prior to plugging in the machine.

11. Always make sure the power switch is in the OFF position when doing any assembly or setup
operation.

12. Always wear a dust mask when cleaning or working near a sander.

13. The use of any accessories or attachments not recommended may cause injury to you and
damage your machine.

14. This machine must be properly grounded.

15.Always keep your face and hands clear of moving parts such as sanding belts and discs.

16.Keep these instructions for future reference.

California Proposition 65 Warning

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains

chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.Your risk from
exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in
a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to lter out
microscopic particles.

For more detailed information about California Propostion 65 log onto rikontools.com.

SAVE THESE INSTRUCTIONS.

Refer to them often.

3

Table of Contents

Safety Warnings......................................................................................................................................2-3

Safety Rules for Sanders............................................................................................................................... 3

Specications.........................................................................................................................................................4

Unpacking and Contents..................................................................................................................................... .5

Getting to Know Your Sander..........................................................................................................................6

Assembly................................................................................................................................................................ 6-10

Operations......................................................................................................................................11-13

Adjustments.........................................................................................................................................................14

Maintenance..........................................................................................................................................................15-16

Wiring Diagram......................................................................................................................................16

Electrical Requirements...................................................................................................................................17

Explosion Diagram..............................................................................................................................................18-19

Parts List...............................................................................................................................................................20-21

Warranty.................................................................................................................................................................22

Notes....................................................................................................................................23

Model Number
Belt Size
Belt Speed
Disc Size
Disc Speed
Hose Inlet
Motor HP
Motor Volts/Amps
Net Weight

Specications

50-142

1” x 42”

3,000 FPM

8”

1,725 RPM

2”

1/3HP

110V/4A

58.5lbs

4

Contents of Package

Unpacking and Checking Contents

Unpack your sander from its carton and check to see that you have all of the following items. Do not
turn your sander ON if any of these items are missing. You may cause injury to yourself or damage to
your machine.

A

C D

B

E F

A. Motor and Base
B. Belt Housing Assembly
C. Disc Table
D. Belt Table
E. Motor Belt Cover
F. Sanding Disc, 8”

G

J

I

G. V-Belt Rear Cover
H. Dust Port, 2”
I. Disc Dust Cover
J. Miter Gauge
K. Table Lock Handles
L. Hex Wrench 2.5MM
M. Hex Wrench 8MM

L

M

H

K

5

Getting to Know Your Sander

B

A

C

P

O

Item Description

A. Sanding Belt 1” x 42”
B. Sanding Belt Tracking Knob
C. Sanding Disc 8”
D. Miter Gauge
E. Disc Table
F. V-Belt Safety Cover
G. Sanding Belt Safety Cover
H. Sanding Belt Dust Port

M

N

D

F

E

L

K

Item Description

I. Motor
J. Disc Table Angle Scale

K. Disc Table Lock Handle
L. Disc Dust Port
M. ON/OFF Switch with Disabling Key
N. Rubber Machine Feet
O. Sanding Belt Table Lock Handle
P. Sanding Belt Table

J

I

G

H

Assembly

The sander must not be plugged in and the power switch must be in the OFF position
until assembly is complete.

Unpacking and Clean-up

1. Carefully nish removing all contents from shipping carton. Compare contents of the
shipping carton with the list of contents above. Place parts on a protected surface.

2. Report any shipping damage to your local distributor.

3. Clean all rust protected surfaces. Do not use; gasoline, paint thinner, mineral spirits,
etc. These may damage painted surfaces.

4. Set packing material and shipping carton to the side. Do not discard until machine
has been set up and is running properly.

6

Assembly

To assemble your 50-142 sander:

1. Using 13mm wrenches, loosen the four motor
mount hex bolts (Figure 6) so you can adjust the
motor position in the next steps.

2. With assistance, position the belt housing as­sembly on the left side of the base, taking care
not to pinch the power cords between the assem­bly and the base.

3. Place the V-belt around both pulleys, and
secure the belt housing assembly with the two
M10-1.5 x 20 cap screws, lock washers, and at
washers (see Figures 7 & 8)—do not fully tighten
the fasteners for now.

4. Center the motor arbor in the cutout of the cast
iron disc guard (see Figure 9), then re-tighten the
motor mount hex bolts.

5. Position the belt housing assembly so there
is about 1⁄4" V-belt deection when moderate
pressure is applied to the V-belt between the pul­leys (see Figure 10)—then fully tighten the cap
screws to secure the belt housing assembly in
place.

6. Insert one M4-.7 x 10 Phillips head screw and
at washer into the left inside mounting bracket
of the V-belt safety cover (see Figure 11). Then
hold it in place with a screwdriver as you slide
the cover over the V-belt and tighten the fastener
into the cast iron disc guard.

7. Secure the right side of the V-belt cover with
one M4-.7 x 10 Phillips head screw and at
washer.

8. Position the V-belt rear cover, as shown in
Figure 12, and secure it in place with the
M4-.7 x 40 Phillips head screw and wingnut.

Motor Mounting
Hex Bolts 2 of 4

Fig. 06

Fig.07

Base

Fig.08

Set Screw

Access Hole

Fig. 09

Deection

Belt Housing

Assembly

Pulley

9. Slide the aluminum disc onto the motor arbor,
making sure to align the arbor key with the disc
keyway.

Pulley

Fig. 10

7

Assembly

10. Rotate the disc until you can see the set
screw through the hole on the back of the V-belt
safety cover (see Figure 13)

11. Using the 2.5mm hex wrench, tighten the set
screw to secure the disc to the motor arbor.

12. Install the disc dust cover, as shown in
Figure 14, with three M4-.7 x 10 Phillips head
screws and at washers.

13. Lay the sander down on a at surface, as
shown in Figure 15, and place a thin piece of
cardboard approximately 1⁄16” thick over the
sanding disc. This piece of carboard will act as a
spacer when you install the disc table.

14. Keeping the cardboard in place, align the
half-arc key of the disc table with the indented
keyway on the disc guard (see the inset of Fig­ure 16). Then secure the table with a table lock
handle, and remove the cardboard.

Fig.11

Wing Nut

V-Belt

Fig.12

Set Screw

Access Hole

Fig.13

15. Secure the dust port, as shown in Figure
17, with the M6-1 x 15 Phillips head screw and
atwasher.

16. Square the disc table to the sanding disc
(refer to Squaring Disc Table on Page 14).

17. Using the M4-.7 x 10 Phillips head screw,
align the red scale pointer with the “0” mark on
the table angle scale (see Figure 18).

18. Install the belt table with a 1⁄16” clearance
from the sanding belt, and secure it in place with
the table lock handle (see Figure 19).

19. Loosen the cap screw shown in Figure 20,
adjust the belt support approximately 1⁄16” away
from the sanding belt, then re-tighten the cap
screw.

Mounting Screws

Fig.14

Cardboard

Fig.15

Keyway

Key

Table Lock

Fig.16

8