Hunter BL Series Bedienungsanleitung

BL Series Drum / Disc Lathe

7674-T, 09-22

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1.1. Owner Information

BL Series Drum / Disc Lathe

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1.2. Getting Started

1.2.1. Introduction

This manual provides operaon instrucons and informaon required to operate the BL Series Drum/Disc

Lathe. This manual assumes that you are familiar with the basics of brake lathes. Secon 1 provides me-

chanical and electrical safety informaon as well as basic informaon about the BL Series Drum / Disc

Lathe. Following secons contain more detailed informaon about equipment, procedures, and maintenance.

Italicized references (for example, Refer to “Equipment Components” page 5.) are used to refer to specic

parts of this manual that provide addional informaon or explanaon. These references should be read for

addional informaon to the instrucons presented.

The owner of the BL Series brake lathe is solely responsible for arranging technical training. The lathe is to

be operated only by a qualied Hunter trained technician. Maintaining records of personnel trained is solely

the responsibility of the owner or management.

For further operaon instrucons for BL6x and BL7x lathes with ACT / Digi-Cal, refer to “Chapter 3. ACT /

Digi-Cal” of these instrucons.

1.2.2. For Your Safety

Hazard Definitions

Watch for these symbols:

CAUTION

Cauon: Hazards or unsafe pracces, which could result in minor personal injury or product

or property damage.

WARNING

Warning: Hazards or unsafe pracces, which could result in severe personal injury or death.

DANGER

Danger: Immediate hazards, which will result in severe personal injury or death.

These symbols idenfy situaons that could be detrimental to your safety and or cause equipment damage.

Important Safety Instructions

Read all instrucons.

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

BL Series Drum / Disc Lathe

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To reduce the risk of re, do not operate the equipment in the vicinity of open containers of ammable

liquids (gasoline).

Do not let cord hang over edge of table, bench or counter, or come in contact with hot manifolds or moving

parts.

Do not operate the equipment with a damaged cord or if the equipment has been dropped or damaged -

unl it has been examined by a qualied service technician.

If an extension cord is necessary, a cord with a current rang equal to or more than that of the equipment

should be used. Cords rated for less current than the equipment may overheat. Care should be taken to

arrange the cord so that it will not be tripped over or pulled .

Always unplug equipment from electrical outlet when not in use. Never use the cord to pull the plug from

the outlet. Grasp plug and pull to disconnect.

Remove adjusng keys and wrenches. Form a habit of checking to see that keys and adjusng wrenches are

removed from tool before turning it on.

Keep the work area clean. Cluered oors, benches and areas around the lathe invite accidents

Do not use in a dangerous environment. Do not use in damp or wet locaons, or expose them to rain. Keep

the work area well lighted.

Wear proper apparel. Wear no loose clothing, gloves, neckes, rings, bracelets, or other jewelry which may

get caught in moving parts. Non-slip footwear is recommended. Wear protecve hair covering to contain

long hair.

Do not overreach. Keep proper foong and balance at all mes.

Always WEAR OSHA approved safety glasses. Everyday eyeglasses only have impact resistant lenses; they

are NOT safety glasses.

Also use face or dust mask if cung operaon is dusty.

Never stand on the tool. Serious injury could occur if the tool is pped or if the cung tool is unintenonally

contacted.

Keep guards in place and in working order.

Unplug tools before servicing, when changing accessories such as blades, bits,cuers, and the like.

Secure work. Use clamps or a vise to hold work when praccal. It is safer than using your hand and it frees

both hands to operate tool.

Do not force a tool. It will do the job beer and safer at the rate for which it was designed.

Use the right tool. Do not force a tool or aachment to do a job for which it was not designed.

Maintain tools with care. Keep tools sharp and clean for best and safest performance. Follow instrucons for

lubricang and changing accessories.

Use only Hunter recommended accessories. Consult the Brake Lathe Packages and Accessories Brochure

Form 3947-T for recommended accessories. The use of non-recommended accessories may cause risk of

injury to persons.

BL Series Drum / Disc Lathe

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Check for damaged parts. Before further use of the tool, a guard or other part that is damaged should be

carefully checked to determine that it will operate properly and perform its intended funcon - check for

alignment of moving parts, binding of moving parts, breakage of parts, mounng, and any other condions

that may aect its operaon. A guard or other part that is damaged should be properly repaired or replaced.

Never leave the tool running unaended. Turn the power “OFF.” Do not leave the tool unl it comes to a

complete stop.

Reduce the risk of unintenonal starng. Make sure switch is in “OFF” posion before plugging in.

SAVE THESE INSTRUCTIONS

1.2.3. Specific Safety Precautions / Power Source

Specications for Extension Cords

When using an extension cord, be sure to use one designed to carry the current your product will draw.

Make sure your extension cord is in good condion. An undersized cord will cause a drop in line voltage

resulng in loss of power and overheang. Table 1 shows the correct size to use depending on cord length

and name plate ampere rang. If in doubt, use the next heavier gauge. The smaller the gauge number, the

heavier the cord.

Power Source Grounding Instructions

In the event of a malfuncon 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-ground-

ing 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 t the outlet, have the proper outlet installed by a qualied

electrician.

Improper connecon of the equipment-grounding conductor can result in a risk of electric shock. The

conductor with insulaon 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 qualied electrician or service personnel if the grounding instrucons are not completely

understood, or if in doubt as to whether the tool is properly grounded.

BL Series Drum / Disc Lathe

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Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the

tool’s plug.

Repair or replace damaged or worn cords immediately.

The Lathe is intended for use on all grounded supply circuits having a nominal rang less than 110VAC or

220VAC. An example of an 110VAC outlet on this type circuit is illustrated below.

The lathe has a grounding plug that looks like the plug illustrated above. Do NOT use adaptors that allow you

to bypass required equipment electrical grounding.

1.3. Operation Information

1.3.1. Equipment Components

Major Operang Controls

BL Series Drum / Disc Lathe

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Disc Tool Bit Micrometer Controls

Disc tool bit micrometer controls are used to make accurate cung insert depth adjustments. Rotang

the controls clockwise feeds the cung inserts into the disc fricon surface, rotang the controls counter

clockwise moves them away from the disc surface

Drum Crossfeed Control

Rotate the drum crossfeed control handle clockwise, and the boring bar extends to move the cung insert

toward the inner edge of the drum diameter. Rotate the handle counter clockwise, and the insert moves

toward the outer edge of the drum diameter.

Feed Selector Handle

Select “DRUM” or “DISC” automac feed control with the feed selector handle

Control Panel

BL Series Drum / Disc Lathe

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“FEED RATE” dial is used to change feed rate from slow to fast. Slow is labeled as FINE. Fast is labeled as

COURSE. The recommended range of feed rates for One Cut Pass is also specied. One Cut operaon is

the method of cung a drum or disc in which, a single cut is used to remove fricon surface material and

provide the desired nish. This is a deep cut made at a slow feed rate.

“RETRACT DRUM BAR” indicator is a red LED that glows when the drum bar is NOT fully retracted in its

home posion.

“LIGHTS” buon turns the two LED work light ON and OFF.

“POWER” toggle switch turns the spindle motor and controls ON and OFF.

For the addional buons on the act / Digi-Cal control panel, refer to“Chapter 3. ACT / Digi-Cal” of these

instrucons

1.3.2. Drum and Disc Mounting

Typical Drum/Disc Mounting Congurations

These gures illustrate how typical hubbed and hubless drums and discs are mounted on the arbor. Adaptors

and / or collets t into the bearing seats or center holes as outlined below. Adaptors may be used as spacers

as needed. It is important that all surfaces contacted by adaptors are as clean as possible.

BL Series Drum / Disc Lathe

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Hubless Discs and Drums

Care should be taken to ensure the following:

All contact surfaces on the arbor, the centering cone, and the adaptors are clean.

Verify that the centering cone and the adaptors are free of nicks and burrs. If the contact surfaces are not

smooth, at, and making full contact, sand with ne emery cloth or replace.

BL Series Drum / Disc Lathe

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Verify that the arbor runout is no more than .0015 inch (.381 mm). The arbor should be cleaned prior to

installing. If the arbor is bent, replace with a new one.

Verify that the mounng surfaces on the disc are clean and free of any high spots. These high spots may be

eliminated by ling.

Proper mounng is important to ensure a correct nish.

Hubbed Discs and Drums

Care should be taken to ensure the following:

All contact surfaces on the arbor and split collets must be clean.

All grease, dirt and chips must be removed from grooves in split collets.

Verify that the arbor runout is no more than .0015 inch (.381 mm). The arbor should be cleaned prior to

installing. If the arbor is bent, replace with a new one.

All grease and dirt should be cleaned from the disc or drum hub prior to mounng.

Proper mounng is important to ensure a correct nish.

1.3.3. Spindle Speed Adjustment

Variable Speed Motor (Models BL6x or BL7x with ACT / Digi-Cal)

Pressing “SPEED” buon located in center of control panel toggles between high,medium and low speed,

indicated by the green LED switching to HIGH, MED or LOW.

Pressing “ACT” buon located in center of control panel will automacally vary speed, indicated by the green

LED. The ACT feature oscillates machining speed top prevent buildup of vibraon (chaer), requiring no

bands or other devices.

Belt / Pulley System (Models BL0x or BL1x)

1. Disconnect the power to the lathe.

2. Li the motor access cover to expose the motor and two pulleys

3. Release the belt tension by liing the handle on the motor base.

4. Move the ribbed belt to the desired set of pulleys, then release the handle on the motor base.

The recommended spindle speed is determined by measuring the diameter of the workpiece. The chart

below indicates the posion of the belt on the pulleys.

BL Series Drum / Disc Lathe

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