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GFB 6X-A22

Original operating instructions

Information about the documentation

About this documentation

  • Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free handling and use of the product.
  • Observe the safety instructions and warnings in this documentation and on the product.
  • Always keep the operating instructions with the product and make sure that the operating instructions are with the product when it is given to other persons.

Explanation of symbols used


Warnings alert persons to hazards that occur when handling or using the product. The following signal words are used:
  • Draws attention to imminent danger that will lead to serious personal injury or fatality.
  • Draws attention to a potential threat of danger that can lead to serious injury or fatality.
  • Draws attention to a potentially dangerous situation that could lead to slight personal injury or damage to the equipment or other property.

Symbols in the documentation

The following symbols are used in this document:
Image alternative Read the operating instructions before use.
Image alternative Instructions for use and other useful information
Image alternative Dealing with recyclable materials
Image alternative Do not dispose of electric equipment and batteries as household waste

Symbols in the illustrations

The following symbols are used in illustrations:
Image alternative These numbers refer to the corresponding illustrations found at the beginning of these operating instructions
Image alternative The numbering reflects the sequence of operations shown in the illustrations and may deviate from the steps described in the text
Image alternative Item reference numbers are used in the overview illustrations and refer to the numbers used in the product overview section
Image alternative This symbol is intended to draw special attention to certain points when handling the product.

Product-dependent symbols

Symbols on the product

The following symbols can be used on the product:
Image alternative Wireless data transfer
Image alternative Hilti Li-ion battery type series used. Observe the information given in the section headed Intended use .
Image alternative Wear eye protection
Image alternative Rated speed
Image alternative Revolutions per minute
Image alternative Revolutions per minute
Image alternative Diameter

Product information

Image alternative products are designed for professional users and only trained, authorized personnel are permitted to operate, service and maintain the products. This personnel must be specifically informed about the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are printed on the rating plate.
  • Write down the serial number in the table below. You will be required to state the product details when contacting Hilti Service or your local Hilti organization to inquire about the product.
    Product information
    Cordless band file
    GFB 6X‑A22
    Serial no.

Declaration of conformity

We declare, on our sole responsibility, that the product described here complies with the applicable directives and standards. A copy of the declaration issued by the certification department can be found at the end of this documentation.
The technical documentation is filed here:
Hilti Entwicklungsgesellschaft mbH | Tool Certification | Hiltistrasse 6 | 86916 Kaufering, Germany


Safety instructions

General power tool safety warnings

Image alternative WARNING Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
Work area safety
  • Keep work area clean and well lit. Cluttered or dark areas invite accidents.
  • Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
  • Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
Electrical safety
  • Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
  • Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
  • Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
  • Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
  • When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
  • If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
Personal safety
  • Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
  • Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.
  • Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents.
  • Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
  • Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
  • Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
  • If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.
  • Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.
Power tool use and care
  • Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
  • Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
  • Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
  • Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
  • Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
  • Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
  • Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
  • Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.
Battery tool use and care
  • Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
  • Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
  • When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
  • Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
  • Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
  • Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130° C (265 °F) may cause explosion.
  • Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.
  • Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
  • Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

Additional safety instructions

Personal safety
  • Use the product only when it is in perfect working order.
  • Never tamper with or modify the tool in any way.
  • Avoid touching rotating parts – risk of injury!
  • Always hold the power tool with both hands on the handles provided. Keep the handles clean and dry.
  • Wait until the product stops completely before you lay it down.
  • Wear protective gloves also when changing the accessory tool. Touching the accessory tool presents a risk of injury (cuts or burns).
  • Make sure that the workplace is well ventilated and, where necessary, wear a respirator appropriate for the type of dust generated. Contact with or inhalation of the dust may cause allergic reactions and/or respiratory or other diseases among operators or bystanders.
  • Before beginning the work, check the hazard classification of the dust that will be produced. Dust from materials such as lead-based paint, certain types of wood and concrete/masonry/stone containing quartz, minerals or metal can be harmful to health. Certain kinds of dust such as oakwood and beechwood dust are classified as carcinogenic, especially in conjunction with additives for wood conditioning (chromate, wood preservative).
  • Take breaks between working and do physical exercises to improve the blood circulation in your fingers. Exposure to vibration during long periods of work can lead to disorders of the blood vessels and nervous system in the fingers, hands and wrists.
Power tool use and care
  • Do not set the product down with its weight resting on the battery.

Battery use and care

  • Observe the special regulations and instructions applicable to the transport, storage and use of Li-ion batteries.
  • Do not expose batteries to high temperatures, direct sunlight or fire.
  • Do not disassemble, crush or incinerate batteries and do not subject them to temperatures over 80 °C.
  • Do not use or charge batteries that have suffered mechanical impact, have been dropped from a height or show signs of damage. In this case, always contact your Hilti  Service .
  • If the battery is too hot to touch it may be defective. In this case, place the product in a non-flammable location, well away from flammable materials, where it can be kept under observation and allowed to cool down. In this case, always contact your Hilti  Service .


Overview of the product

Image alternative
  1. Eccentric screw
  2. Locking screw for swivel arm
  3. Lockable on/off switch
  4. Adjusting knob for speed
  5. Battery
  6. Battery release button
  7. Dust filter
  8. Grip
  9. Casing cover
  10. Drive roller
  11. Securing screws for file arm
  12. File arm
  13. Adjusting screw for file arm
  14. Abrasive belt
  15. Contact roller

Intended use

The product described is a hand-held, cordless band file. It is designed for grinding and polishing metallic surfaces in awkward places, without use of water.

  • Use only Hilti Li‑ion batteries of the B 22 series with this product.
  • Use only Hilti battery chargers of the C4/36 series for charging these batteries.

Possible misuse

Do not use the product for wet grinding.
Do not use the product to work on hazardous or flammable materials (e.g. asbestos, magnesium, wood).

Items supplied

Band file, side handle, 2 file arms, Torx wrench, operating instructions.
Other system products approved for use with this product can be found at your local Hilti Store or online at:

Temperature-dependent motor protection

The temperature-dependent motor protection system monitors current input and motor temperature and thus prevents the power tool overheating.
If the motor is overloaded through application of excessive working pressure, the power tool’s performance drops noticeably or it may stall completely.
If the power tool stalls or slows significantly due to overloading, release the pressure applied to the tool and then allow it to run under no load for approx. 30 seconds.

Li-ion battery charge status display

The charge status of the Li‑ion battery is displayed after one of the two battery release buttons is pressed.
4 LEDs light.
Charge status: 75 % to 100 %
3 LEDs light.
Charge status: 50 % to 75 %
2 LEDs light.
Charge status: 25 % to 50 %
1 LED lights up.
Charge status: 10 % to 25 %
1 LED flashes.
Charge status: < 10 %
Indication of the charge status is not possible while the power tool is in operation or immediately after operation. If the battery charge status LEDs flash, please refer to the information given in the Troubleshooting section.

Technical data

Weight including battery B22⁄8.0
3.4 kg
(7.5 lb)
Rated voltage
21.6 V
Belt speed
4.3 m/s … 9.5 m/s
(14.1 ft/s … 31.2 ft/s)
Belt dimensions
18 in x 1⁄4 ... 1 3⁄16 in
Ambient temperature for operation
−17 ℃ … 60 ℃
(1 ℉ … 140 ℉)
Storage temperature
−20 ℃ … 70 ℃
(−4 ℉ … 158 ℉)


Battery operating voltage
21.6 V
Ambient temperature for operation
−17 ℃ … 60 ℃
(1 ℉ … 140 ℉)
Storage temperature
−20 ℃ … 40 ℃
(−4 ℉ … 104 ℉)
Battery charging starting temperature
−10 ℃ … 45 ℃
(14 ℉ … 113 ℉)

Before use

Charging the battery

  1. Before charging the battery, read the operating instructions for the charger.
  2. Make sure that the contacts on the battery and the contacts on the charger are clean and dry.
  3. Use an approved charger to charge the battery.

Inserting the battery

Risk of injury by short circuit or falling battery!
  • Before inserting the battery, make sure that the contacts on the battery and the contacts on the product are free of foreign matter.
  • Make sure that the battery always engages correctly.
  1. Charge the battery fully before using it for the first time.
  2. Push the battery into the battery holder until it engages with an audible click.
  3. Check that the battery is seated securely.

Removing the battery

  1. Press the release buttons on the battery.
  2. Pull the battery out of its holder in the device.

Fitting the side handle

Image alternative
  • Screw the side handle into the threaded socket.

Fitting an abrasive belt

Risk of injury! The abrasive belt can easily tear if the direction of travel is incorrect.
  • Be sure to install the abrasive belt right way round for the direction of travel. The belt's direction of travel must match the direction-of-travel arrow on the gear head.
Image alternative
  1. Remove the side handle.
  2. Swing the housing cover aside.
  3. Turn the eccentric screw until it engages. This relieves the tension on the file arm.
  4. Center the abrasive belt on the file arm and the drive roller.
  5. Release the eccentric screw to tension the file arm.
  6. Swing the housing cover back into position in front of the housing.
  7. Fit the side handle.
    Not every abrasive belt matches every file arm. Select the correct combination from the table below and change the file arm if necessary.

Recommended combination for file arm / belt width

9 mm roller, peaked
4 mm … 9 mm
(0.2 in … 0.4 in)
9 mm roller, crowned
4 mm … 13 mm
(0.2 in … 0.5 in)
30 mm roller, small
13 mm … 30 mm
(0.5 in … 1.2 in)
30 mm roller, large
13 mm … 30 mm
(0.5 in … 1.2 in)

Adjusting the belt run

Image alternative
  1. Adjust the belt run by turning the adjusting screw on the file arm.
  2. Select the setting that keeps the belt running centered on the contact roller.
  3. Set the speed.
  4. Run the belt at the slowest speed and check your setting.

Removing the abrasive belt

Image alternative
  1. Remove the side handle.
  2. Swing the housing cover aside.
  3. Turn the eccentric screw until it engages. This relieves the tension on the file arm.
  4. Remove the abrasive belt.
  5. Slacken the eccentric screw to relieve the tension on the spring of the file arm.

Changing the file arm

Image alternative
  1. Remove the abrasive belt.
  2. Slacken the adjusting screw.
  3. Remove the securing screws and lift off the file arm.
  4. Hold the new file arm in position, install the securing screws and tighten them to the specified torque.
    Technical data
    Tightening torque, securing screws for file arm
    2.7 Nm
    (2.0 ftlbf)
  5. Fit the abrasive belt.
  6. Adjust the belt run.

Adjusting the swivel arm

Image alternative
  1. Slacken the locking screw of the swivel arm.
  2. Tilt the swivel to the desired position.
  3. Tighten the locking screw.


Switching on

  1. Press the rear section of the on/off switch.
  2. Slide the on/off switch forward.
    • The motor runs.
  3. Lock the on/off switch.

Setting the speed

  • Use the adjusting knob to set the speed.

Belt speed without load

Stage 1
4.3 m/s
(14.1 ft/s)
Stage 2
4.7 m/s
(15.4 ft/s)
Stage 3
5.5 m/s
(18.0 ft/s)
Stage 4
6.4 m/s
(21.0 ft/s)
Stage 5
7.8 m/s
(25.6 ft/s)
Stage 6
9.5 m/s
(31.2 ft/s)


Risk of injury! Touching a moving abrasive belt can lead to painful skin abrasion and cut injuries.
  • Do not touch the moving abrasive belt.
Do not exceed the speed rating printed on the abrasive belt.
Secure the workpiece you are going to file.
  1. Lift the band file clear of the work surface.
  2. Switch the tool on.
    • The power tool then runs in sustained operating mode.
  3. Set the speed.
  4. Bring the band file with the abrasive belt into contact with the work surface and keep it moving with a steady back-and-forth action.
  5. Work with the pulling run of the abrasive belt.
  6. Apply moderate pressure and do not press the abrasive belt into the material. Excessive contact pressure can cause the abrasive belt to slip off the contact roller.

Switching off

  • Press the rear section of the on/off switch.
    • The on/off switch jumps into the off position and the motor stops.

Care and maintenance

Risk of injury with battery inserted !
  • Always remove the battery before carrying out care and maintenance tasks!
Care and maintenance of the tool
  • Carefully remove any dirt that may be adhering to parts.
  • Remove the dust filter and clean it and the air vents carefully, using a dry brush.
  • Use only a slightly damp cloth to clean the casing. Do not use cleaning agents containing silicone as these can attack the plastic parts.
Care of the lithium‑ion batteries
  • Keep the battery free from oil and grease.
  • Use only a slightly damp cloth to clean the casing. Do not use cleaning agents containing silicone as these may attack the plastic parts.
  • Avoid ingress of moisture.
  • Check all visible parts and controls for signs of damage at regular intervals and make sure that they all function correctly.
  • Do not operate the product if signs of damage are found or if parts malfunction. Have it repaired immediately by Hilti Service.
  • After cleaning and maintenance, fit all guards or protective devices and check that they function correctly.
To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare parts, consumables and accessories approved by Hilti for use with the product can be found at your local Hilti Store or online at: .

Changing the drive roller

A worn drive roller can be replaced.
Image alternative
  1. Remove the abrasive belt.
  2. Remove the securing screws from the drive roller. If necessary, press and hold down the spindle lock button.
  3. Pull the drive roller off the spindle.
  4. Slip the new drive roller on to the spindle.
  5. Insert the securing screws and tighten them to the specified torque. If necessary, press and hold down the spindle lock button.
    Technical data
    Tightening torque, securing screws for drive roller
    2.4 Nm
    (1.8 ftlbf)

Transport and storage of cordless tools

    Accidental starting during transport !
  • Always transport your products with the batteries removed!
  • Remove the battery.
  • Never transport batteries in bulk form (loose, unprotected).
  • Check the tool and batteries for damage before use after long periods of transport.
    Accidental damage caused by defective or leaking batteries !
  • Always store your products with the batteries removed!
  • Store the tool and batteries in a place that is as cool and dry as possible.
  • Never store batteries in direct sunlight, on heating units or behind a window pane.
  • Store the tool and batteries in a place where they cannot be accessed by children or unauthorized persons.
  • Check the tool and batteries for damage before use after long periods of storage.


If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by yourself, please contact Hilti Service.


Trouble or fault
Possible cause
Action to be taken
The battery runs down more quickly than usual.
Very low ambient temperature.
  • Allow the battery to warm up slowly to room temperature.
The battery doesn’t engage with an audible click.
The retaining lugs on the battery are dirty.
  • Clean the retaining lugs and refit the battery.
1 LED flashes.
The device does not work.
Low battery.
  • Change the battery and charge the empty battery.
The battery is too hot or too cold.
  • Allow the battery to cool down or warm up slowly to room temperature.
All 4 LEDs flash.
The device does not work.
The tool has been overloaded.
  • Release the control switch and then press it again. Then allow the power tool to run under no load for approx. 30 seconds.
The power tool or battery gets very hot.
Electrical fault
  • Switch the power tool off immediately, remove the battery, keep it under observation, allow it to cool down and contact Hilti Service.
The tool does not achieve full power.
A battery with inadequate capacity was used.
  • Use a battery with adequate capacity.
The motor has no braking effect.
Low battery.
  • Change the battery and charge the empty battery.
The power tool was overloaded briefly.
  • Switch the power tool off and then on again.


Image alternative Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The materials must be correctly separated before they can be recycled. In many countries, your old tools, machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative for further information.
Battery disposalImproper disposal of batteries can result in health hazards from leaking gases or fluids.
  • DO NOT send batteries through the mail!
  • Cover the terminals with a non-conductive material (such as electrical tape) to prevent short circuiting.
  • Dispose of your battery out of the reach of children.
  • Dispose of the battery at your Hilti Store , or consult your local governmental garbage disposal or public health and safety resources for disposal instructions.
Image alternative
  • Do not dispose of power tools, electronic equipment or batteries as household waste!

Manufacturer’s warranty

  • Please contact your local Hilti representative if you have questions about the warranty conditions.
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