SCHUNK ROTA THW plus Series Gebrauchsanweisung

Translation of original operating manual

Power chuck

ROTA THWplus

Assembly and operating manual

Superior Clamping and Gripping

Imprint

2 01.00|ROTA THWplus |en

Imprint

This manual remains the copyrighted property ofSCHUNK GmbH & Co. KG. It issolely

supplied toour customers andoperators of our products andforms part ofthe product.

This documentation may not beduplicated ormade accessible to third parties, in particu-

lar competitive companies,

without our prior permission.

Technical changes:

We reserve the right tomake alterations for the purpose of technical improvement.

Document number: 0889020

Edition: 02.00 |24/04/2017|en

Dear customer,

congratulations on choosing a SCHUNK product. By choosing SCHUNK, you have opted for

the highest precision, top quality and best service.

You are going to increase the process reliability of your production and achieve best

machining results – to the customer's complete satisfaction.

SCHUNK products are inspiring.

Our detailed assembly and operation manual will support you.

Do you have further questions? You may contact us at any time – even after purchase.

Kindest Regards

Your H.-D. SCHUNK GmbH & Co.

Spanntechnik KG

Lothringer Str. 23

D-88512 Mengen

Tel. +49–7572-7614-0

Fax +49-7572-7614-1099

[email protected]

www.schunk.com

Table of contents

01.00|ROTA THWplus |en

Table of contents

General .................................................................................................................... 5

1.1

Warnings................................................................................................................... 5

1.2

Applicable documents .............................................................................................. 6

Basic safety instructions ........................................................................................... 7

2.1

Intended use............................................................................................................. 7

2.2

Not intended use ...................................................................................................... 7

2.3

Notes on particular risks........................................................................................... 8

2.4

Notes on safe operation......................................................................................... 11

2.4.1

Substantial modifications............................................................................ 14

2.5

Personnel qualification........................................................................................... 14

2.6

Organizational measures........................................................................................ 14

2.7

Using personal protective equipment.................................................................... 15

Warranty................................................................................................................. 16

Torques per screw ................................................................................................... 17

Scope of delivery ..................................................................................................... 18

Technical data ......................................................................................................... 19

6.1

Chuck data .............................................................................................................. 19

6.2

Clamping force / speed diagrams........................................................................... 19

6.3

Calculations for clamping force and speed ............................................................ 22

6.3.1

Calculation of the required clamping force in case of a given rpm............ 22

6.3.2

Calculation example: Required initial clamping force Fsp0 for a given rpm n

..................................................................................................................... 24

6.3.3

Calculation of the permissible rpm nzul in case of a given initial clamping

force Fsp0.................................................................................................... 26

6.4

Grades of Accuracy................................................................................................. 26

6.5

Permissible imbalance............................................................................................ 27

Attachment and disassembly of the chuck............................................................... 28

7.1

Pre-assembly measures.......................................................................................... 28

7.2

Mounting of the Chuck to the Machine Spindle .................................................... 28

7.3

Disassembling and assembling the chuck .............................................................. 31

Function and handling ............................................................................................. 33

8.1

Function of the chuck ............................................................................................. 33

8.2

Handling the chuck and the base jaws................................................................... 33

8.3

Base jaw position.................................................................................................... 34

8.4

Change or supplement of jaws............................................................................... 34

Table of contents

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Maintenance ........................................................................................................... 36

9.1

Lubrication.............................................................................................................. 36

9.2

Maintenance intervals............................................................................................ 37

9.3

Technical condition ................................................................................................ 37

Disposal .................................................................................................................. 38

Chuck mounts and Spare parts ................................................................................ 39

11.1

Chuck mounts......................................................................................................... 39

11.2

Spare parts.............................................................................................................. 39

Drawings ................................................................................................................. 41

Translation of the original declaration of incorporation........................................... 43

Appendix on Declaration of Incorporation, as per 2006/42/EC, annex II, No. 1 B ..... 44

General

01.00|ROTA THWplus |en

General

This operating manual is an integral component of the product and

contains important information on safe and proper assembly,

commissioning, operation, care, maintenance and disposal. This

manual must be stored in the immediate vicinity of the product

where it is accessible to all users at all times.

Before using the product, read and comply with this manual, espe-

cially the chapter “Basic safety notes”.(2, Page 7)

If the product is passed on to a third party, these instructions must

also be passed on.

Illustrations in this manual are provided for basic understanding of

the product and may differ from the actual product design.

We accept no liability for damage resulting from the failure to

observe and comply with this operating manual.

Warnings

To make risks clear, the following signal words and symbols are

used for safety notes.

DANGER

Danger for persons!

Non-observance will inevitably cause irreversible injury or death.

WARNING

Dangers for persons!

Non-observance can lead to irreversible injury and even death.

CAUTION

Dangers for persons!

Non-observance can cause minor injuries.

NOTICE

Material damage!

Information about avoiding material damage.

1.1

General

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WARNING

Warning about hand injuries

WARNING

Warning about hot surfaces

Applicable documents

• General terms of business *

• Catalog data sheet of the purchased product *

• Calculation of the jaw centrifugal forces, "Technology" chapter

in the lathe chuck catalog *

The documents marked with an asterisk (*) can be downloaded on

our homepage www.schunk.com.

1.2

Basic safety instructions

01.00|ROTA THWplus |en

Basic safety instructions

Improper handling, assembly and maintenance of this product may

result in risk to persons and equipment if this operating manual is

not observed.

Report any failures and damage immediately and repair without

delay to keep the extent of the damage to a minimum and prevent

compromising the safety of the product.

Only original SCHUNK spare parts may be used.

Intended use

The chuck is used to clamp workpieces on machine tools and other

suitable technical facilities, paying particular attention to the tech-

nical data specified by the manufacturer. The technical data speci-

fied by the manufacturer must never be exceeded.

The product is intended for industrial use.

Intended use also means that the user has read and understood

this operating manual in its entirety, especially the chapter “Basic

safety notes”.

The maximum RPM of the chuck and the required clamping force

must be determined by the user for the respective clamping task

based on the applicable standards and technical specifications of

the manufacturer.

(See also “Calculations for clamping force and RPM” in the chapter

“Technical data”). (6, Page 19)

Not intended use

A not intended use of the product is for example:

• It is used as a press, a punch, a toolholder, a load-handling de-

vice or as lifting equipment.

• the product is used for unintended machines or workpieces.

• the technical data is exceeded when using the product. (6,

Page 19)

• if workpieces are not clamped properly, paying particular at-

tention to the clamping forces specified by the manufacturer.

• if it is used in working environments that are not permissible.

• if the product is operated without a protective cover.

2.1

2.2

Basic safety instructions

8 01.00|ROTA THWplus |en

Notes on particular risks

This product may pose a danger to persons and property if, for ex-

ample:

• It is not used as intended;

• It is not installed or maintained properly;

• The safety and installation instructions, local applicable safety

and accident prevention regulations or the EC Machinery Di-

rective are not observed.

DANGER

Risk of fatal injury to operating personnel due to the workpiece

falling down or being flung out in the event of a power failure

In the event of a power failure, the lathe chuck's clamping force

may fail immediately and the workpiece may be released in an

uncontrolled manner. This poses a risk of death or injury to the

operating personnel and can result in serious damage to the au-

tomated system.

• The machine manufacturer and the operator of the machine

must carry out and document a hazard assessment and risk

analysis to ensure that suitable measures are taken to main-

tain the lathe chuck's clamping force until the machine comes

to a standstill and the workpiece can be secured (e.g. using a

crane or suitable lifting equipment).

• The machines and equipment must fulfill the minimum re-

quirements of the EC Machinery Directive; specifically, they

must have effective technical measures to protect against po-

tential mechanical hazards.

DANGER

Possible risk of fatal injury to operating personnel if a jaw

breaks or if the lathe chuck fails because the technical data have

been exceeded and a workpiece is released or parts fly off

• The technical data specified by the manufacturer for using the

lathe chuck must never be exceeded.

• The lathe chuck may only be used on machines and facilities

that fulfill the minimum requirements of the EC Machinery Di-

rective; specifically, they must have effective technical

measures to protect against possible mechanical hazards.

2.3

Basic safety instructions

01.00|ROTA THWplus |en

DANGER

Possible risk of fatal injury to operating personnel from clothing

or hair being caught on the lathe chuck and being dragged into

the machine

Loose clothing or long hair may become caught on projecting

parts of the lathe chuck and be drawn into the machine.

• The machines and equipment must fulfill the minimum re-

quirements of the EC Machinery Directive; specifically, they

must have effective technical measures to protect against po-

tential mechanical hazards.

• Always wear tight-fitting clothing and a hairnet when working

on the machine and the lathe chuck.

WARNING

Risk of injury due to dropping the chuck during transport, instal-

lation or removal.

• Take special care in the danger zone when transporting, in-

stalling or removing the chuck.

• Note the relevant load securing regulations for working safely

with cranes, ground conveyors, lifting gear and load-handling

equipment.

CAUTION

Danger of slipping and falling in case of dirty environment

where the chuck is used (e.g. by cooling lubricants or oil).

• Ensure that the working environment is clean before starting

assembly and installation work.

• Wear suitable safety shoes.

• Follow the safety and accident-prevention regulations when

operating the chuck, especially when working with machine

tools and other technical equipment.

Basic safety instructions

10 01.00|ROTA THWplus |en

CAUTION

Danger of limbs being crushed by opening and closing of the

chuck jaws during manual loading and unloading or when re-

placing moving parts.

• Do not reach between the jaws.

• Wear safety gloves.

• Observe the safety and accident prevention regulations during

operation of the chuck, especially in connection with machin-

ing centers and other technical equipment.

CAUTION

Risk of burns due to workpieces with high temperatures.

• Wear protective gloves when removing the workpieces.

• Automatic loading is preferred.

CAUTION

Danger of damage due to incorrectly selected clamping position

of the clamping jaws to the workpiece.

An incorrectly selected clamping position of the clamping jaws to

the workpiece can result in damage to the base and top jaws.

• Make sure that the workpiece clamping is concentric.

• In the case of a chuck with a quick-change jaw system the top

jaws must not protrude radially beyond the base jaws used.

Exception: The supporting jaw variant 3 protrudes beyond the

chuck base jaw due to the construction of the jaw. In this case,

the T-nuts must always be inserted completely into the groove

of the chuck base jaw.

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

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