Kitagawa BS300 Bedienungsanleitung

Version 1.10 (2021.08.03)

Original instructions

INSTRUCTION MANUAL

BS300 type

Large Thru-Hole High Precision Power Chuck

Kitagawa Corporation

77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan

TEL +81-(0)847-40-0561

FAX +81-(0)847-45-8911

・This instruction manual is for production engineers and maintenance

personnel in charge of operation of this product. When a beginner uses

this product, receive instructions from experienced personnel, the

distributor or our company.

・Before installing, operating or maintaining this equipment, carefully

read this manual and the safety labels attached to the equipment.

Failure to follow these instructions and safety precautions could result

in serious injury, death, or property damage.

・Store this manual near equipment for future reference.

・If any questions related to safety arise about this manual, please

confirm them with the distributor or our company.

DANGER

Preface

This manual provides detailed information about how to safely and correctly use the power

chuck (BS300 type) for a lathe.

Before starting to use this power chuck, read this manual carefully and always follow the

instructions and warnings in "Important Safety Precautions" and "Precautions for Use"

at beginning of the manual. Failure to follow these precautions could result in a serious

accident.

Terms and Symbols Used for Safety Messages

In this manual, precautions for handling that are considered especially important are

classified and displayed as shown below depending on the damage of risk including the

seriousness of the harm that could result. Please sufficiently understand the meanings of

these terms and follow the instructions for safe operation.

Safety Alert Symbol

The triangle is the safety alert symbol used to alert you to potential safety hazards that

could result in injury or death.

Indicates a hazardous situation which, if you not avoided, will

result in death or serious injury.

Indicates a hazardous situation which, if you not avoided,

could result in death or serious injury.

Indicates a hazardous situation which, if you not avoided,

could result in minor or moderate injury.

Indicates instructions which, if not avoided, could result in

damage to the equipment or a shortened work life.

Liability and How to Use this Manual

This product is suitable for gripping a workpiece on the lathes or rotary tables. This product

is equipped with the jaws to clamp the workpiece and they operate by means of a rotary

cylinder. For any other applications, please contact us.

Our company will not assume responsibility for injury, death, damage, or loss resulting from

not following the instructions in this manual.

There are countless things that cannot or should not be done, and it is impossible to cover

all of them in this manual.

Therefore, do not perform any actions unless they are specifically allowed in this manual. If

any questions related to safety arise about operation, control, inspection and maintenance

which are not specified in this manual, please confirm them with our company or distributor

before performing them.

Guarantee and Limitation of Liability

The guarantee period of this product is 1 year after delivery.

Use the parts delivered by Kitagawa Corporation for all the parts including consumable

parts. We will not assume responsibility for injury, death, damage, or loss caused by usage

of parts not manufactured by Kitagawa Corporation. Additionally, if parts other than genuine

parts manufactured by Kitagawa Corporation are used, this guarantee will be completely

invalid.

The chuck and cylinder from Kitagawa Corporation should be used together. If you must

use a part not made by Kitagawa, check with us or our distributor to be sure it is safe to do

so. We will not be responsible for injury, death, damage or loss caused by use of a chuck

or cylinder made by another company unless this use has been approved by Kitagawa or

its distributor.

Table of Contents

1. Structural Drawing and Parts List -----------------------------------------------------------------------5

1-1. Type display

1-2. Structural drawing

1-3. Scope of product

1-4. Parts list

2. Important Safety Precautions ------------------------------------------------------------8

3. Specifications ----------------------------------------------------------------------------------------------15

3-1. Specifications

3-2. Relationship between gripping force and rotation speed

3-3. Relationship between gripping part center height, static griping force and input

force / Relationship between top jaw mass moment and gripping force loss

4. Forming Soft Jaw ------------------------------------------------------------------------------------------23

4-1. Attachment of soft jaw

4-2. Forming soft jaw with outside diameter gripping

4-3. Forming soft jaw with inside diameter gripping

4-4. Forming method when you use forming jig

5. Usage --------------------------------------------------------------------------------------------------------28

5-1. Precautions during gripping work with chuck

5-2. Precautions during gripping work in irregular shape

5-3. Precautions related to usage of jaw

5-4. Precautions related to processing

5-5. Attachment of locator and jig

6. Maintenance and Inspection ---------------------------------------------------------------------------32

6-1. Periodic Inspection

6-2. Grease lubrication

6-3. Disassembling

7. Malfunction and Countermeasures ------------------------------------------------------------------35

7-1. In the case of malfunction

7-2. Where to contact in the case of malfunction

For Machine Tool Manufacturers (Chapter 8)

8. Attachment -------------------------------------------------------------------------------------------------37

8-1. Outline drawing of attachment

8-2. In the case that the back plate must be manufactured (BS300 series)

8-3. In the case of with back plate (BS300A series)

8-4. Attachment of chuck

9. Other Information ----------------------------------------------------------------------------------------48

9-1. About standards and orders

9-2. Information about markings of product

9-3. About disposal

1. Structural Drawing and Parts List

1-1. Type display

Type display as shown below

Fig.1

1-2. Structural drawing

Fig.2

1-3. Scope of product

This instruction manual is for the chuck part.

Fig.3

・To prevent the work from flying, safe design, maintenance and erroneous

action prevention of the hydraulic system to maintain the gripping force of the

chuck is extremely important. Thoroughly read the “Important Safety

Precautions”on and after page 8 in this manual.

・As for the cylinder, follow the instruction manual for the cylinder.

1-4. Parts list

Fig.4

Table 1

No.

Part name

Quantity

No.

Part name

Quantity

Body

Chuck attaching bolt

Wedge plunger

Set screw

Master jaw

Set screw

2 or 4

Soft jaw

Socket head cap screw

T nut

Steel ball

Plunger

Grease nipple

Plunger nut

Hex key

Draw nut

Hex key

Cover

Hex key

Coil spring

Hex key

Handle

Felt

Socket head button screw

Back plate

Jaw attaching bolt

Socket head cap screw

25, 26 are only supplied if there is a back plate.

2. Important Safety Precautions

Important safety precautions are summarized below. Please read this section before first

starting to use this product.

DANGER

Failure to follow the safety precautions below will result in

serious injury or death.

Turn off main power supply before attaching, inspecting or replacing

chuck, and before adding oil.

・The chuck may start rotation

suddenly, and a part of the body or

clothing may be caught.

Close door before rotating spindle.

・If the door is not closed, you may touch

the rotating chuck or the work may fly out,

which is very dangerous. (In general, the

safety interlock function which allows

rotation only when the door is the manual

mode or the test mode)

During spindle rotation, do not turn off hydraulic pump power supply and

do not operate switching valve.

・Cutting off hydraulic pressure

causes a drop in the gripping

force which could result in the

work being released and flying

out.

・Operating the manual switching

valve or solenoid valve will lead

to a drop of hydraulic pressure.

！

For All Users

Important Safety Precautions

DANGER

Failure to follow the safety precautions below will result in

serious injury or death.

Do not allow the rotation speed of the chuck to exceed the maximum

allowable speed limit. (Refer to pages 17-22)

・If the rotation speed of the chuck

exceeds the rotation speed limit,

this is very dangerous as the

chuck and work will fly out.

The input force of the chuck (piston thrust, pulling force of the draw pipe)

must not exceed the allowable maximum input force.

(Refer to pages 17-22)

・Input must match the specification of the

chuck.

・Adjust the hydraulic pressure to the

cylinder so that the input force, which

determines the gripping force of the

chuck, does not exceed.

・Excessive input force can lead to

breakage of the chuck, which is very

dangerous, as the chuck can work can

be damaged and fly out.

If you use the chuck with the inside diameter gripping, input force

(hydraulic pressure) must be 1/2 or less of the allowable maximum input.

(Refer to page 22)

・The chuck may break and

the chuck or work could fly

out.

！

For All Users

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