9920J - Sander MAKITA - Free user manual and instructions

Brand	Makita
Model	9920J
Product type	Sander
Sanding type	Pad sander
Abrasive paper format	1/4 sheet (115 x 140 mm)
Power consumption	200 W
No-load speed	12,000 rpm
Oscillation amplitude	2 mm
Power supply	230 V ~ 50 Hz
Cord length	2.5 m
Net weight	1.6 kg
Dimensions (L x W x H)	250 x 120 x 150 mm
Sound pressure level	78 dB(A)
Sound power level	89 dB(A)
Vibration level	7.5 m/s²
Paper fastening system	Clamps
Dust collector	Integrated dust bag
Main functions	Dry sanding of flat surfaces: wood, metal, plastic
Maintenance and cleaning	Regularly clean the dust bag and ventilation openings
Safety	Wear safety goggles, dust mask, unplug before maintenance
Spare parts and repairability	Available through Makita after-sales service, repairable by a professional
Warranty	1 year (according to local legislation)

Frequently Asked Questions - 9920J MAKITA

How to change the abrasive paper on the Makita 9920J?

Unplug the sander. Open the holding clamps on the sides of the pad. Insert the abrasive sheet making sure to align it properly, then close the clamps. Gently pull the paper to check it is taut.

What type of abrasive paper to use?

Use 1/4 sheets (115 x 140 mm) with clamp fixation. Choose grit according to the job: coarse (40-80), medium sanding (100-150), or finishing (180-240).

The sander vibrates abnormally, what to do?

Check that the abrasive paper is properly installed and not worn. Make sure the surface to be sanded is flat. Clean the pad and ventilation openings. If the problem persists, contact after-sales service.

How to clean the dust bag?

Unplug the sander. Remove the dust bag from the unit. Empty it and clean it with warm soapy water if necessary. Let it dry completely before putting it back.

Can I use the sander on metal?

Yes, the Makita 9920J is suitable for sanding metal. Use an abrasive suitable for metals (fine to medium grit) and wear a dust mask. Be careful not to overheat the surface.

What is the power of the Makita 9920J?

Power consumption is 200 W, with a no-load speed of 12,000 rpm. This allows efficient sanding for finishing work.

How to adjust the speed?

The Makita 9920J is not equipped with a speed variator. The speed is fixed and optimized for standard sanding.

The sander heats up, is that normal?

Some heating is normal during prolonged use. If it becomes excessive, stop the tool and let it cool down. Check that the ventilation openings are not blocked.

Where to find spare parts?

Spare parts (pad, clamps, dust bag, brushes) are available from authorized Makita dealers or on the official website. Always use original parts.

What is the warranty of the Makita 9920J?

The legal warranty is at least 1 year. Some dealers offer an extension. Keep the purchase receipt and follow the conditions of use to benefit from the warranty.

USER MANUAL 9920J MAKITA

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Explanation of general view

1 Lock button	7 More than 6 mm	12 Hose of vacuum cleaner
2 Switch trigger	8 Dust bag	13 Vacuum cleaner
3 Speed adjusting dial	9 Dust spout	14 Sanding shoe
4 L e v e r	10 Fastener	15 Limit mark
5 Steel plate	11 Optional hose 28 mm in inner diameter	16 Brush holder cap
6 Adjusting knob		17 Screwdriver

SPECIFICATIONS

Model 9902 9903 9920 9404

Belt size ....76 mm x 533 mm 76 mm x 533 mm 76 mm x 610 mm 100 mm x 610 mm

Belt speed 440 m/min. 210 – 440 m/min. 210 – 440 m/min. 210 – 440 m/min.

Overall length ......296 mm 296 mm 334 mm 334 mm

Net weight 4.3 kg 4.3 kg 4.5 kg 4.8 kg

Safety class ....☐/II ☐/II ☐/II ☐/II

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
  • Weight according to EPTA-Procedure 01/2003

ENE052-1

Intended use

The tool is intended for the sanding of large surface of wood, plastics and metal materials as well as painted surfaces.

ENF002-2

Power supply

The tool should be connected only to a power supply of the same voltage as indicated on the nameplate, and can only be operated on single-phase AC supply. They are double-insulated and can, therefore, also be used from sockets without earth wire.

GEA010-1

General Power Tool Safety Warnings

⚠ WARNING Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

GEB015-3

BELT SANDER SAFETY WARNINGS

1. Hold power tool by insulated gripping surfaces, because the belt may contact its own cord. Cutting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.
2. Ventilate your work area adequately when you perform sanding operations.
3. Some material contains chemicals which may be toxic. Take caution to prevent dust inhalation and skin contact. Follow material supplier safety data.
4. Always use the correct dust mask/respirator for the material and application you are working with.
5. Always use safety glasses or goggles. Ordinary eye or sun glasses are NOT safety glasses.

6. Hold the tool firmly with both hands.

7. Make sure the belt is not contacting the workpiece before the switch is turned on.

8. Keep hands away from rotating parts.
9. Do not leave the tool running. Operate the tool only when hand-held.
10. This tool has not been waterproofed, so do not use water on the workpiece surface.

SAVE THESE INSTRUCTIONS.

WARNING:

DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to safety rules for the subject product. MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

FUNCTIONAL DESCRIPTION

CAUTION:

- Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool.

Switch action (Fig.1)

CAUTION:

- Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released.

To start the tool, simply pull the switch trigger. Release the switch trigger to stop.

For continuous operation, pull the switch trigger and then push in the lock button.

To stop the tool from the locked position, pull the switch trigger fully, then release it.

Speed adjusting dial (Fig. 2)

For 9903, 9920 and 9404

The belt speed can be infinitely adjusted between 210 m and 440 m per minute by turning the speed adjusting dial to a given number setting from 1 to 5. Higher speed is obtained when the dial is turned in the direction of number 5; lower speed is obtained when it is turned in the direction of number 1.

Select the proper speed for the workpiece to be sanded.

CAUTION:

• If the tool is operated continuously at low speeds for a long time, the motor will get overloaded, resulting in tool malfunction.
• The speed adjusting dial can be turned only as far as 5 and back to 1. Do not force it past 5 or 1, or the speed adjusting function may no longer work.

ASSEMBLY

CAUTION:

- Always be sure that the tool is switched off and unplugged before carrying out any work on the tool.

Installing or removing abrasive belt (Fig. 3)

Pull the lever all the way out and install the belt over the rollers, then return the lever to the original position.

CAUTION:

- When installing the belt, make sure that the direction of the arrow on the back of the belt corresponds to the one on the tool itself. (Fig. 4)

Adjusting belt tracking (Fig. 5)

Switch on the tool and make sure that the belt is aligned properly. If the edge of the belt extends beyond the edge of the base or the edge of the belt retracts more than 6 mm away from the edge of the base, use the adjusting knob to adjust the belt tracking.

Dust bag (Fig. 6 & 7)

Attach the dust bag onto the dust spout. The dust spout is tapered. When attaching the dust bag, push it onto the dust spout firmly as far as it will go to prevent it from coming off during operation.

When the dust bag is about half full, remove the dust bag from the tool and pull the fastener out. Empty the dust bag of its contents, tapping it lightly so as to remove particles adhering to the insides which might hamper further collection.

NOTE:

- If you connect a Makita vacuum cleaner to this tool, more efficient and cleaner operations can be performed.

Connecting to Makita vacuum cleaner (Fig. 8)

Cleaner sanding operations can be performed by connecting the belt sander to Makita vacuum cleaner.

When connecting to Makita vacuum cleaner, an optional hose 28 mm in inner diameter is necessary.

OPERATION

Sanding operation (Fig. 9)

CAUTION:

- The tool should not be in contact with the workpiece surface when you turn the tool on or off. Otherwise a poor sanding finish or damage of the belt may result.

Hold the tool firmly with both hands. Turn the tool on and wait until it attains full speed. Then gently place the tool on the workpiece surface. Keep the belt flush with the workpiece at all times and move the tool back and forth. Never force the tool. The weight of the tool applies adequate pressure. Excessive pressure may cause stalling, overheating of the motor, burning of the workpiece and possible kickback.

Sanding shoe (optional accessory) (Fig. 10)

The sanding shoe readily allows you to sand workpieces more evenly.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result.

Replacing carbon brushes

Remove and check the carbon brushes regularly. Replace when they are worn down to the limit mark. Keep the carbon brushes clean and free to slip in the holders. Both carbon brushes should be replaced at the same time. Use only identical carbon brushes. (Fig. 11)

Use a screwdriver to remove the brush holder caps. Take out the worn carbon brushes, insert the new ones and secure the brush holder caps. (Fig. 12)

To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized Service Centres, always using Makita replacement parts.

OPTIONAL ACCESSORIES

CAUTION:

- These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.

If you need any assistance for more details regarding these accessories, ask your local Makita service center.

• Abrasive belts
• Sanding shoe
• Dust bag
• Hose 28 mm in inner diameter
• Belt sander stand

NOTE:

- Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.

Noise

The typical A-weighted noise level determined according to EN60745:

Sound pressure level ( L_pA ): 85 dB (A)

Sound power level ( L_WA ): 96 dB (A)

Uncertainty (K): 3 dB (A)

Wear ear protection

ENG900-1

Vibration

The vibration total value (tri-axial vector sum) determined according to EN60745:

Work mode: sanding metal plate

Vibration emission (ah): 2.5 m/s ² or less

Uncertainty (K): 1.5 m/s ²

ENG901-1

• The declared vibration emission value has been measured in accordance with the standard test method and may be used for comparing one tool with another.
• The declared vibration emission value may also be used in a preliminary assessment of exposure.

WARNING:

• The vibration emission during actual use of the power tool can differ from the declared emission value depending on the ways in which the tool is used.
• Be sure to identify safety measures to protect the operator that are based on an estimation of exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the times when the tool is switched off and when it is running idle in addition to the trigger time).

ENH101-18

For European countries only

EC Declaration of Conformity

Makita declares that the following Machine(s):

Designation of Machine:

Belt Sander

Model No./ Type: 9902, 9903, 9920, 9404

Conforms to the following European Directives:

2006/42/EC

They are manufactured in accordance with the following

Standard or standardized documents:

EN60745

The technical file in accordance with 2006/42/EC is available from:

Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium

2.3.2015

Yasushi Fukaya

Director

Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium

Descriptif

OPTIONELE ACCESSOIRES

LET OP: