RIKON 50-120 - Sander

50-120 - Sander RIKON - Free user manual and instructions

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Brand RIKON
Model 50-120
Product Type Random Orbital Sander
Pad Size 6 inches (150 mm)
Orbit Diameter 3/16 inch (4.8 mm)
Speed Range 10,000 - 14,000 OPM
Variable Speed Yes, with dial control
Power Source Corded electric
Voltage 120V AC, 60 Hz
Amperage 5 Amps
Power Cord Length 8 feet (2.4 m)
Dust Collection Built-in dust bag with 1-inch vacuum adapter
Weight 3.5 lbs (1.6 kg)
Dimensions (L x W x H) 10 x 6 x 7 inches (25.4 x 15.2 x 17.8 cm)
Body Material Aluminum and polymer
Soft Grip Handle Yes, overmolded rubber
Safety Lock Yes, paddle switch with lock-on
Hook-and-Loop Pad Yes, for quick paper changes
Accessories Included Dust bag, 5 each of 80, 120, 220 grit sanding discs
Warranty 5 years limited
Certifications ETL listed

Frequently Asked Questions - 50-120 RIKON

What is the proper way to attach sandpaper to the sander?
Align the holes in the sandpaper with the dust collection holes on the pad, then press firmly. The hook-and-loop pad ensures a secure fit.
How do I change the speed on the RIKON 50-120?
Turn the variable speed dial located on the rear of the sander barrel. Rotate clockwise to increase speed, counterclockwise to decrease. The speed range is 10,000 - 14,000 OPM.
Can I use this sander for wet sanding?
No, the RIKON 50-120 is designed for dry sanding only. Using it with water or other liquids can cause electric shock and damage the tool.
How do I clean the dust bag?
Empty the dust bag regularly by unzipping it and shaking out the contents. For deeper cleaning, wash the bag with mild soap and water, then let it air dry completely before reuse.
What type of sandpaper does this sander use?
It uses 6-inch (150 mm) hook-and-loop sanding discs with pre-punched dust holes. Available in various grits from coarse (60) to fine (400+).
How do I replace the sanding pad?
Unplug the sander. Remove the sanding disc. Use a hex key (provided) to remove the screw in the center of the pad. Pull off the old pad and attach the new one, then re-tighten the screw. Ensure the pad is centered.
Why does my sander vibrate excessively?
Excessive vibration may indicate a worn or unbalanced pad, loose sandpaper, or debris inside the tool. Check the pad for wear, ensure sandpaper is securely attached, and clean the dust collection ports. If problem persists, contact RIKON support.
Can I use a vacuum with this sander?
Yes, the dust bag can be removed and a standard 1-inch vacuum hose can be attached directly to the sander's dust port for more efficient dust collection.
How do I lock the sander on for continuous use?
Press and hold the paddle switch, then push in the lock-on button on the side of the switch housing. Release the paddle switch; the sander will run until you squeeze the paddle again to release.
What is the warranty coverage for this sander?
RIKON offers a 5-year limited warranty covering defects in material and workmanship. The warranty does not cover normal wear items like sanding pads, dust bags, or sandpaper.

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USER MANUAL 50-120 RIKON

6" X 48"Belt & 10"Disc Sander

RIKON 50-120 - 6" X 48"Belt & 10"Disc Sander - 1

natural_image Rikon industrial machine with circular blade and metal frame (no visible text or symbols)

RIKON 50-120 - 6" X 48"Belt & 10"Disc Sander - 2

Intertek 4001824

Operator's Manual

Record the serial number and date of purchase in your manual for future reference.

Serial Number: Date of purchase:

For technical support or parts questions, email techsupport@rikontools.com or call toll free at (877)884-5167

Operator Safety: Required Reading

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 modified 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 specific potential hazards.

▲DANGERRIKON 50-120 - General Safety Warnings - 1ALWAYS 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.
▲DANGERRIKON 50-120 - General Safety Warnings - 2ALWAYS 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.
▲DANGERRIKON 50-120 - General Safety Warnings - 3ALWAYS 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.
▲DANGERRIKON 50-120 - General Safety Warnings - 4NEVER OPERATE A TOOL WHILE UNDER THE INFLUENCE OF DRUGS,MEDICATION, OR ALCOHOL.
▲DANGERRIKON 50-120 - General Safety Warnings - 5ALWAYS 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.
▲DANGERRIKON 50-120 - General Safety Warnings - 6ALWAYS USE SAFETY GLASSES AND WEAR HEARING PROTECTION.Also use a face or dust mask if the cutting operation is dusty.
▲DANGERRIKON 50-120 - General Safety Warnings - 7NEVER OVERREACH.Keep your proper footing and balance at all times.
▲DANGERRIKON 50-120 - General Safety Warnings - 8NEVER STAND ON TOOLS.Serious injury could occur if the tool is tipped or if the cutting tool is accidentally contacted.

DANGER

ALWAYS DISCONNECT TOOLS.

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

RIKON 50-120 - ALWAYS DISCONNECT TOOLS. - 1

ALWAYS AVOID ACCIDENTAL STARTING.

Make sure switch is in "OFF" position before plugging in cord.

NEVER LEAVE TOOLS RUNNING UNATTENDED.

DANGER

ALWAYS CHECK FOR DAMAGED PARTS.

RIKON 50-120 - ALWAYS CHECK FOR DAMAGED PARTS. - 1

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 Belt & Disc 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 qualified person.
  5. It is highly recommended that this machine be firmly mounted to a flat and secure work surface or stand.
  6. Always wear protective eye wear prior to operating this machine.
  7. Do not operate this machine if you are under the influence 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 and use adequate dust collection and proper ventilation. Use of sanders can produce harmful particles while sanding certain types of woods.
  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. Abrasive discs and belts should be the recommended width and length of the manufacturer.
  16. Always keep your face and hands clear of moving parts such as belts and pulleys.
  17. Keep power supply cords free of moving parts of the sander. Damaged cords can result in electric shock.
  18. Maintain a 1/16" clearance between the sanding disc, sanding belt and tables.
  19. Always support the workpiece with the table or backstop.
  20. Remove material or debris from the work area. Keep work area neat and clean.

SAVE THESE INSTRUCTIONS.

Refer to them often.

This owner's manual is not a teaching aid. Use of this owner's manual is intended to show assembly, adjustments, and general use.

Table of Contents

Safety Warnings....2-3

Sander Safety Rules ....3

Specifications 4

Contents of Package ....5

Assembly 6-8

Electrical Requirements....9

Operation....10-11

Maintenance 12

Changing the Motor Belt....12

Trouble Shooting....13

Wiring Diagram....13

Parts Diagram 14

Parts List....15

Notes 16-18

Warranty 19

Specifications

Motor 3/4 HP

Amps 10 A

Volts, Hertz 110 V, 60 Hz

Belt Size 6" x 48"

Belt Speed (no load) 2,030 SFPM

Belt Table Tilt 0° - 90°

Belt Fence (LxH) 7-7/8" x 4-3/4"

Disc Size (PSA) Diameter 10"

Disc Speed (no load) 1,720 RPM

Disc Table Size (LxW) 4" x 8"

Disc Table Tilt 0° - 45°

Miter Gauge 'T' Slot 3/8" x 3/4"

Dust Port (1) 2-1/2" OD, 2-5/16" ID

Overall Size (LxWxH) 28-1/4" x 17-1/4" x 16"

Base Size (LxW) 22" x 10-1/4"

Net Weight 92 lbs.

NOTE: The specifications, photographs, drawings and information in this manual represent the current model when the manual was prepared. Changes and improvements may be made at any time, with no obligation on the part of Rikon Power Tools, Inc. to modify previously delivered units. Reasonable care has been taken to ensure that the information in this manual is correct, to provide you with the guidelines for the proper safety, assembly and operation of this machine.

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 filter out microscopic particles.

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

Contents of Package

When unpacking, check to make sure the following parts are included. If any parts are missing or broken, please call RIKON Power Tools at the number on the cover of this manual as soon as possible.

Carton Contents

Item Description

A Belt & disc sander assembly 1

B Sanding disc

C Table support w/scale 1

D Table support 1

E Work table for belt 1

F Miter Gauge

G Work table for disc 1

H Locking knob for table support 2

I Mount, support table 1

J Mount, support table w/indicator 1

K Bag of loose parts 1

L Owner's manual 1

A
RIKON 50-120 - Item Description - 1

natural_image Exterior view of a vintage portable electronic device with a circular lens and control panel (no visible text or symbols)

Qty

G
RIKON 50-120 - Item Description - 2

B
RIKON 50-120 - Item Description - 3

C
RIKON 50-120 - Item Description - 4

D
RIKON 50-120 - Item Description - 5

E
RIKON 50-120 - Item Description - 6

H
RIKON 50-120 - Item Description - 7

|
RIKON 50-120 - Item Description - 8

J
RIKON 50-120 - Item Description - 9

K
RIKON 50-120 - Item Description - 10

F
MITRE FENCE

L

RIKON 50-120 - Item Description - 12

List of loose parts in bag

Description

RIKON 50-120 - Description - 1

Sunk head screw M6x16 2

RIKON 50-120 - Description - 2

Washer 6mm 2

RIKON 50-120 - Description - 3

Knurled nut M6 2

RIKON 50-120 - Description - 4

Hex. bolt 4

RIKON 50-120 - Description - 5

Lock washer 4

Qty

Description

Qty

RIKON 50-120 - Qty - 1

Pan head screw M6x16 4

RIKON 50-120 - Qty - 2

Lock washer 6mm 4

RIKON 50-120 - Qty - 3

Washer 6mm 2

RIKON 50-120 - Qty - 4

Hex "L" wrench 3mm 1

RIKON 50-120 - Qty - 5

Hex "L" wrench 6mm 1

Assembly

Securing Sander Base Assembly to Workbench

The sander base must be secured before using. Attach a large C-Clamp to each side of the sander and the workbench. Or, permanently mount following the instructions below:

  1. Place the sander on the workbench in its final operating location.
  2. Place a pencil through the mounting holes of the sander base (42) and mark the hole locations on workbench.
  3. Remove the sander and drill four 3/8 inch holes through the workbench.

  4. Align the sander base over the holes and secure using four 5/16 inch screws (or larger) and hex nuts. (See Fig. 01)

Mounting Sanding Disc and Guard

  1. Locate the sanding disc (22) and peel the backing off of the disc.
  2. Align the perimeter of the sanding disc over plate. When aligned, press the disc firmly onto the disc.
  3. Position the disc guard (27) onto the lower portion of the sanding disc so that the mounting holes align.
  4. Using a Phillips screwdriver, fasten two pan head screws (found in parts bag) through the disc guard. (See Fig. 02)

Changing the Sanding Disc

The sandpaper disc can be removed with the table installed, or with the table removed to give more working access to the disc, if needed.

  1. Peel off the used abrasive disc from the metal sanding disc. A putty knife may help in this process.
  2. Make sure that the disc plate is clean of any residue. Mineral spirits will soften the PSA adhesives. Rotate the disc by hand may be necessary to get access to all of the disc surface.

  3. Peel the backing off the new PSA 10" sanding disc, then center and press the sanding disc onto the metal disc plate.

  4. Replace the sanding table if it was removed.

WARNING THE MACHINE MUST NOT BE PLUGGED IN AND THE POWER SWITCH MUST BE IN THE 'OFF' POSITION UNTIL ASSEMBLY IS COMPLETE.

RIKON 50-120 - Changing the Sanding Disc - 1

natural_image Hand operating a black RIKOMA machine with a handle, no visible text or symbols on the device itself.

Fig. 01

Sanding disc

Fig. 02

RIKON 50-120 - Changing the Sanding Disc - 3

natural_image Close-up of hands operating a mechanical device with a white panel and black base (no visible text or symbols)

Fig. 03

Installing the Belt Table

  1. Place the work table for belt on the work support.
  2. Insert two countersink head screws through the work table and the work support slot.
  3. Put a 6mm washer and a wing nut on the screw and tighten. (See Fig. 03)

Assembly

Installing the Disc Table Assembly

Warning: To avoid jamming the workpiece or fingers between the table and sanding surface, the table edge should be a maximum of 1/16 inch from the sanding surface.

  1. Use two M6x16 pan head screws to fasten the table support mount to the front of the sander.
  2. Place the support table with scale onto the table support mount.
  3. Put a 6mm flat washer on the table lock knob, and place the knob into the tilt scale plate and mount. Hand tighten it only at this time. (See Fig. 04)
  4. Place the table onto table support; align the four screws which are pre-assembled under the table with the holes of table support. (See Fig. 05)
  5. Put the external lock washer and hex nut onto the screws, and tighten.
  6. Adjust the table and re-tighten the table lock knobs.
  7. Loosen the four M6 hex nuts under the table.
  8. Use a 1/16 inch drill bit as a spacer. Place the drill bit between the disc and the front edge of the table. Hold the table against the 1/16 inch drill bit and tighten the four M6 hex nuts. (See Fig. 06)
    Warning: To avoid injury from accidental start, make sure the machine is unplugged before making any adjustments.
  9. Using a combination square, check the angle of the work table with the disc. (See Fig. 07)
  10. If the table is not 90 degrees with the disc, loosen the table lock knob screw and tilt the table.
  11. Adjust the worktable square to the disc and re-tighten the table lock knob.
  12. Adjust the pointer to the zero mark on the scale plate.

Leveling Table Assembly

RIKON 50-120 - Leveling Table Assembly - 1

natural_image Close-up of a mechanical linkage component with no visible text or symbols

Fig. 04

RIKON 50-120 - Leveling Table Assembly - 2

natural_image Black-and-white photo of a mechanical device with a flat top and side panels, no visible text or symbols.

Fig. 05

RIKON 50-120 - Leveling Table Assembly - 3

natural_image Close-up of a mechanical device with a circular component and control panel (no visible text or symbols)

Fig. 06

RIKON 50-120 - Leveling Table Assembly - 4

natural_image Close-up of a mechanical device with a metallic bracket and mounting base (no visible text or symbols)

Fig. 07

Assembly

Installing the Sanding Belt

Warning: To avoid injury from accidental start, make sure the machine is unplugged before making any adjustments.

On the under side of the sanding belt, you will find a "direction arrow". The sanding belt must run in the direction of this arrow, so that the splice does not come apart.

  1. Slide the tension lever to the right to release the belt tension. (See Fig. 08)
  2. Place the sanding belt over the drums with the direction arrow pointing in the proper direction. (See Fig. 09) Make sure the belt is centered on both drums.
  3. Slide tension lever to the left to apply belt tension.
  4. Tighten the hex socket screw (59) when the bed is in the desired position for sanding. See page 10.

Tensioning and Tracking

  1. Plug in the power cord. Turn the switch "ON" and immediately "OFF", noting if the belt tends to slide off the idler drum or drive drum.
  2. If the sanding belt moves toward the disc, turn the tracking knob clockwise 1/4 turn. (See Fig. 10)
  3. If the sanding belt moves away from the disc, turn the tracking knob counterclockwise 1/4 turn.
  4. Turn the switch "ON" and immediately "OFF" again, noting the belt movement. Readjust the tracking knob if necessary.

On/Off Switch

The On/Off Locking Switch needs to have the switch key inserted before the switch can be used (key located in parts bag). This feature prevents unauthorized use of the sander. (See Fig. 11)

CAUTION: Never walk away from sander when machine is running. Always lock the switch in the Off position and unplug from the power supply when not in use.

RIKON 50-120 - On/Off Switch - 1

natural_image Close-up of a hand holding a white tool on a device labeled 'RIMON' (no additional text or symbols visible)

Fig. 08

A 60 A 60 SA

Fig. 09

Tracking knob

Fig. 10

WARNING! Read the manual before using the machine. Always wear safety progress to not wear gloves, needles or shoes something. Tie back keep hold. Add "kickback" (workpiece thrown at 1 save only the left half of the class train 1. Slow maximum clearance won the table and sanding ball is. disconnected from power

Fig. 11

Electrical Requirements

In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.

Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified electrician.

Improper connection of the equipment-grounding conductor can result in a risk of electric shock. The conductor, with insulation having an outer surface that is green with or without yellow stripes, is the equipment-grounding conductor. If repair or replacement of the electric cord or plug is necessary, do not connect the equipment-grounding conductor to a live terminal.

Check with a qualified electrician or service personnel if the grounding instructions are not completely understood, or if in doubt as to whether the tool is properly grounded.

Use only three wire extension cords that have three-prong grounding plugs and three-pole receptacles that accept the tool's plug.*

Repair or replace a damaged or worn cord immediately.

This tool is intended for use on a circuit that has an outlet that looks the one illustrated in Figure A below. The tool has a grounding plug that looks like the grounding plug as illustrated in Figure A below. A temporary adapter, which locks like the adapter as illustrated in Figure B below, may be used to connect this plug to a two-pole receptacle, as shown in Figure B if a properly grounded outlet is not available.** The temporary adapter should only be used until a properly grounded outlet can be installed by a qualified electrician. The green colored rigid ear or tab, extending from the adapter, must be connected to a permanent ground such as a properly grounded outlet box.

* Canadian electrical codes require extension cords to be certified SJT type or better.
** Use of an adapter in Canada is not acceptable.

3-prong electrical receptacle grounding conductor 3-wire electrical cord

Fig. A Fig. B

grounding conductor grounding adapter lug 3-wire electrical cord 2-prong electrical receptacle

NOTE: See page 13 for the 50-120 Wiring Diagram.

Operation

Bevel Sanding

The work table can be tilted from 0 to 45 degrees for bevel sanding. Loosen the table lock knob and tilt the work table to desired angle as shown. (See Fig. 12) Re-tighten the table lock knob.

Warning: To avoid jamming the workpiece or fingers between the table and sanding surface, the table should repositioned on the table support to retain a maximum of 1/16" distance between the sanding surface and the table.

Positioning the Belt Bed

A bed locking hex socket head screw locks the belt bed in a vertical or horizontal position.

To adjust vertical position:

  1. Remove the work support.

  2. Loosen the hex socket head locking screw (59) using a 1/4 inch hex wrench. (See Fig. 13)

  3. Position the belt bed vertically as shown and tighten the hex socket head locking screw.

Surface Sanding on the Sanding Belt

Warning: To avoid injury from slips, jams or thrown pieces, adjust the backstop to clear the sanding surface by no more than 1/16th of and inch. When checking clearance between the belt and work support, use a 1/16" drill bit as a spacer gauge. (See Fig. 14)

  1. Hold the workpiece firmly with both hands, keeping fingers away from the sanding belt.

  2. Keep the end butted against the backstop and move the work evenly across the sanding belt. Use extra caution when sanding very thin pieces. (See Fig. 15)

  3. For sanding long pieces, remove the work support.

  4. Apply only enough pressure to allow the sanding belt to remove material.

RIKON 50-120 - Surface Sanding on the Sanding Belt - 1

natural_image Close-up of a mechanical device with a curved panel and metal cladding (no visible text or symbols)

Fig. 12

Hex socket head locking screw

Fig. 13

RIKON 50-120 - Surface Sanding on the Sanding Belt - 3

natural_image Close-up of a mechanical device with a white panel and black base, showing a textured surface (no visible text or symbols)

Fig. 14

RIKON 50-120 - Surface Sanding on the Sanding Belt - 4

natural_image Close-up of a hand pressing down on a silicon wafer with a label 'RIMON' (no readable text or symbols beyond label)

Fig. 15

Operation

End Sanding on the Sanding Belt

To sand the end of a long workpiece, it is recommended to sand with the belt in the vertical position.

  1. To raise the belt to the vertical position, follow the instructions in "Positioning Belt Bed" on the previous page.
  2. Install the work table assembly.
  3. Move the work evenly across the sanding belt. (See Fig. 16)

Sanding Curved Edges

Always sand inside curves on the idler drum as shown.(See Fig. 17)

Warning: Never attempt to sand the ends of a workpiece on the idler drum. Applying the end of the workpiece to the idler drum could cause the workpiece to fly up and result in an injury.

Always sand outside curves on the left side of center on the sanding disc as shown. The downward rotating sanding disc will safely force the work down onto the work table where it can be safely controlled.(Fig. 18)

Warning: Applying the workpiece to the right side of the disc could cause a workpiece to fly up (kickback) and result in an injury.

Sanding Small End Surfaces on the Sanding Disc

Note: Use of a miter gauge is recommended for this operation.

Always move the work across left side of center on the sanding disc face as shown. (See Fig. 19)

Warning: Applying the workpiece to the right side of the disc could cause workpiece to fly up( kickback) and result in an injury.

Workpiece Belt bed Work table

Fig. 16

RIKON 50-120 - Sanding Small End Surfaces on the Sanding Disc - 2

natural_image Close-up of hands holding a sheet of paper over a mechanical device (no visible text or symbols)

Fig. 17

Center Workpiece

Fig. 18

Center Mitre gauge Workpiece

Fig. 19

Maintenance

Warning: For your safety, remove the plug from power source outlet before adjusting, maintaining, of lubricating your belt and disc sander.

  1. Apply a light coat of paste wax to the work table to make feeding stock easier, and reduce rust.
  2. Use compressed air to frequently blow out dust and debris from the sander and motor. (See Fig. 20)

Warning: To avoid electrocution or fire, any repairs to electrical systems should be done only by qualified service technicians. Unit must be reassembled exactly to factory specifications.

  1. If the power cord is worn, cut, or damaged in any way, have it repaired immediately.

Changing the Motor Belt

  1. Using a Phillips screwdriver, remove the three pan head screws located in the cover. (See Fig. 21)
  2. Remove the cover.
  3. Loosen four M8 hex head screws to allow the pulleys to shift enough to place belt around them. Place the belt around the motor pulley and drive pulley as shown. (See Fig. 22)
  4. Adjust tension of the belt by putting a wrench in the adjusting gap. Push up on the wrench to tighten the tension between the two pulleys.
  5. Tighten the four M8 hex head screws carefully.
  6. Test belt tension by placing fingers on either side of the belt and squeeze. There should be about a 1/4 inch 'give', or deflection, to the belt. (See Fig. 23)

Note: Too much tension on the pulley belt may cause increased noise and over load the motor. Not enough tension on the pulley belt may cause the belt to fail prematurely.

  1. Locate the pulley cover and position it inside the edges of pulley housing.
  2. Using a Phillips screwdriver, reinstall and tighten the three pan head screws.

RIKON 50-120 - Changing the Motor Belt - 1

natural_image Interior view of a mechanical device with internal components and wiring (no visible text or symbols)

Fig. 20

Pulley cover Phillips screwdriver

Fig. 21

Belt

Fig. 22

RIKON 50-120 - Changing the Motor Belt - 4

natural_image Close-up of a hand using a mechanical belt drive a chain on a device (no visible text or symbols)

Fig. 23

Troubleshooting

SYMPTOM PROBABLE CAUSE REMEDY
Sander does not operate1. Not plugged into wall outlet.2. Locking key is not inserted.3. Power switch defective.4. Motor or wiring problem. 4. Take to a1. Plug into wall outlet.2. Insert locking key.3. Replace power switch.qualified technician.
Motor slows when sanding 1.Timing belt is too tight.2. Applying too much pressure 2. Apply on work piece. piece when sanding.1. Decrease tension.less pressure to work
Sanding Belt runs off drums 1.Not tracking proplerly.1. Adjust tracking.
Wood burns while sanding1. Sanding Disc or Belt is loaded with debris.1.Clean or replace disc or belt.
Sander makes excessive noise1. Timing belt too tight, bearings need oil.1. Decrease tension, oil bearings.

Wiring Diagram

Motor Motor cable Switch Power cable

Parts Diagram

Exploded view diagram of a device with numbered parts for identification

KEY

NO.DESCRIPTIONPART NO.
1Sanding belt 6" x 48"1-JL61020032
2Bed1-JL61021000-050W
3Knob1-JL20061101/2-001S
4Washer1-WSH8GB96B
5Wing screw1-JL61040006
6Sunk head screw M6x161-M6X16GB818B
7Work table for belt1-JL61040008-050W
8Work support, for sander belt1-JL61040003A-117U
8AWork support plastic belt shroud1-JL61040007-0015
9Lock pin, work support1-JL61040004
10Wing nut M61-JL20061003-001S
11Lock washer-helical 5mm1-WSH5GB862D2Z
12Pan head screw M5x81-M5X14GB818B
13Pan head screw M5x161-ST4D2X25GB845B
14Switch housing1-JL60062001-049S
15No-volt switch1-J-9301B
17Bearing spacer1-JL61020008
18Bearing cap1-JL61020007
19Socket head screw M8x101-M8X10GB80B
20Drive drum1-JL61020006
21Cover, switch housing1-JL60062002-049S
22Pad - 10" dia. sandpaper1-JL61020033
23Screw-pan cross M6x121-M6X10GB70Z
24Disc1-JL61030001
25Support, sanding disc1-JL61030002A
26Tapping screw M4x121-M5X40GB70Z
27Disc guard1-JL61010005-050W
28Disc shroud1-JL61010006-001S
29Hex nut M61-M6GB6170Z
30Pan head screw M6x161-M6X16GB5781Z
1aMount, table support, left1-JL61030005-001Y
1bMount, table support, right2-JL61034000-001Y
2aTable support, left2-JL61032000-001Y
2bTable support,right2-JL61033000-001Y
33Table1-JL61030010-001G
34Dust collector1-JL61010003-001S
35Pan head screw M5x161-M5X16GB818B
36Clamp handle1-JL61010014-001Y
37Handle1-JL61010013-050W
38Pan head screw M5x161-M6X16GB818B

KEY

NO.DESCRIPTIONPART NO.
39Cast base1-JL61010001-001G
40Motor cover1-JL61010002-001S
41Safety guard, sanding belt lower1-JL61010012-001S
42Pan head screw M5x81-M5X10GB818Z
43Thread M6x1451-M6X145GB818Z
44Rubber sleeve1-JL61010011-001S
45Support stem1-JL61010010
46Lock base sander belt1-JL61020026-001G
47Motor1-G3512674
48Hex head screw1-M8X16GB5781Z
49Lock washer1-WSH8GB93Z
50Drive pulley1-JL61020027
51Countersink washer1-WSH6GB5287Z
52Drive pulley1-JL61020001
53Pulley cover1-JL61010004-001S
54Timing belt1-JL61020034
55Drive pulley1-JL61020002
56Flat head screw M5x251-M6X20GB70Z
57Bearing support1-JL61020004
58Lock plate sander plate1-JL61020005-050A
59Hex socket cap screw M8x251-M8X25GB5783B
60Retaining ring 15mm1-CLP15GB894D1B
61Ball bearing1-BRG80202GB278
62Drive shaft1-JL61020025
63Pan head screw M5x161-M5X16GB818B
64Rubber washer1-JL61020021-001S
65Tension lever1-JL61020023-050W
66Lever spacer1-JL61020013
67Rubber washer1-JL60020018
68Index spring1-JL61020020
69Rubber bushing1-JL61020022
70Retaining ring 12mm1-CLP12GB894D1B
71Ball bearing1-BRG80101GB278
72Idler drum1-JL61020017
73Idler shaft1-JL61020016
74Drum guide1-JL61022000
75Index spring1-JL61020015
76Power cord w/plug1-JL20072101
77“D” shape rubber bushing1-JL61010009-001S

NOTE: Please reference the Manufacturer's Part Number when calling for Replacement Parts. For Parts under Warranty, the serial number of your machine is required.

Notes

Use this section to record maintenance, service and any calls to Technical Support:

Notes

Use this section to record maintenance, service and any calls to Technical Support:

Notes

Use this section to record maintenance, service and any calls to Technical Support:

RIKON

POWER TOOLS

5-Year Limited Warranty

RIKON Power Tools Inc. ("Seller") warrants to only the original retail consumer/purchaser of our products that each product be free from defects in materials and workmanship for a period of five (5) years from the date the product was purchased at retail. This warranty may not be transferred.

This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs, alterations, lack of maintenance or normal wear and tear. Under no circumstances will Seller be liable for incidental or consequential damages resulting from defective products. All other warranties, expressed or implied, whether of merchantability, fitness for purpose, or otherwise are expressly disclaimed by Seller. This warranty does not cover products used for commercial, industrial or educational purposes.

This limited warranty does not apply to accessory items such as blades, drill bits, sanding discs, grinding wheels or belts and other related items.

Seller shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special, or consequential damages arising from the use of our products.

To take advantage of this warranty proof of purchase documentation, which includes date of purchase and an explanation of the complaint, must be provided.

The Seller reserves the right to effect at any time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever.

To take advantage of this warranty, please fill out the enclosed warranty card and send it to:

RIKON Warranty

16 Progress Rd.

Billerica, MA 01821

The card must be entirely completed in order for it to be valid. If you have any questions please contact us at 877-884-5167 or warranty@rikontools.com.

5 YEAR WARRANTY

For more information:

16 Progress Road

Billerica, MA 01821

877-884-5167 / 978-528-5380

techsupport@rikontools.com

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Product information

Brand : RIKON

Model : 50-120

Category : Sander