Wittenstein Components & Systems. Catalog 2012/2013 - page 39

 

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Wittenstein Components & Systems. Catalog 2012/2013 - page 39

 

 

Precision System

µ

m

Machine precision *

µ

m

20 

µ

m

50 

µ

m

100 

µ

m

200 

µ

m

>300 

µ

m

Master/Slave: TP System output

with Premium Class

+

 pinion and Premium Class rack

TP System output

with Premium Class

+

 pinion and Premium Class rack

TP output

with Premium Class RTP pinion and Premium/Smart Class rack

SP System output

with Premium Class

+

 pinion and Premium/Smart Class rack

SP involute output

with Standard Class RSP pinion and Value/Smart Class rack

Key output

with Value Class pinion and Value/Smart Class rack

Competent consultation

Staff at our 

Technical Office

 will be glad to answer any questions you may have about 

alpha Rack & Pinion Systems and your specific configurations. Give us a call! 

* depending on other components.

The right gearhead, rack and pinion 

for every application

 – from low-cost 

to high-end solutions. The positioning 
accuracy required in the application, 
the existing measuring system and the 
machine design essentially determine 
the configuration of linear systems and 
system combinations.

The 

systems 

and

 applications

A real powerhouse with 

a compact 

design

. Constant 

rigidity

 and 

outstanding 

dynamics

. Easy to operate, 

quickly becomes indispensable. 

Customized

 to suit your specific 

application areas. 

HSC (High Speed Cutting) 
portal milling machines
Source:  
F. Zimmermann GmbH

Profile machining centers
Source: Handtmann A-Punkt Automation GmbH

Laser machines
Source: TRUMPF Werkzeug-
maschinen GmbH + Co. KG

Eroding machines   ·   Grinding machines   ·   HSC portal milling machines   ·   Turning machines   ·   Machining centers   ·   Boring machines   ·   Laser machines   ·   Punching machines

P

E

S

Mechanical

 

systems

 

Rack & Pinion

  

system

Eroding machines   ·   Grinding machines   ·   HSC portal milling machines   ·   Turning machines   ·   Machining centers   ·   Boring machines   ·   Laser machines   ·   Punching machines

Smart System

Economy System

Measuring System

DIRECT

INDIRECT

Economy

+

 System/ 

Economy System 

for standard linear 
applications in mid-range/
low-cost applications.

Precision

+

 System/

Precision System 

for demanding requirements 
with regard to dynamics 
and accuracy in high-end 
applications.

Smart System

for positioning options with 

more design freedom 

in 

flexible applications.

Wood, plastic/composite 
machining centers
Source: MAKA – Max Mayer
Maschinenbau GmbH © MAKA

Gas cutting machines
Source: LIND GmbH 
Industrial Equipment

Robot arms in auto-
mation engineering
Source: MOTOMAN 
Robotics Europe AB

Water jet cutting machines  ·  CNC wood/plastic processing machines  ·  Gas cutting machines  ·  Pipe bending machines  ·  Foam cutting machines  ·  Automation engineering

Dynamic

•  Maximum movement speed and acceleration with low moments of 

inertia.

•  Extremely good control characteristics due to constant linear rigidity 

along the entire movement path.

Precise

• New drive solutions with unique true running accuracy.
•  Maximum positioning accuracy due to precision alignment of 

components.

Efficient

• Effortless operation. 
• Minimal mounting space and high power density. 
• Enormous savings potential due to high level of energy efficiency.

alpha Rack & Pinion System – 

the benefits for you

Master/Slave: TP System output with Premium Class

+

 

pinion and Premium Class rack

alpha Rack & Pinion System                              

 A direct comparison

Mechanical

 

systems

 

Rack & Pinion

  

system

alpha Rack & Pinion System                              

 A direct comparison

The right gearhead, rack and  
pinion for every application.

Movement speed

Moving force

Acceleration

Surface finish

Noise level

Energy requirement

Safety in the event of a power failure

Service life

Sensitivity in the event of a crash

Difficulty to maintain

Investment costs

Repair costs

Operating efficiency (under extreme load)

Operating efficiency (under low load)

Better

Worse

Ball scr

ew

Linear motor

alpha Rack & Pinion System

The comparison is based on typical processes involved in machining large workpieces and machines with long movement paths.

alpha Rack & Pinion Systems 
will optimize your applications. 
Find out for yourself.
Help your company 

take giant 

strides towards achieving 
its goals.

In detail

Feel the dynamics.
Experience the precision.
Maximize efficiency.

Solution-oriented concepts, 
sophisticated development 
phases and perfect results. 
Helping you become a top 
performer.

Precision 

System

Economy 

System

Smart 

System

Value Class

Solution for 

mid-range and economy

 

applications.

Smart Class

The flexible rack for applications 

with 

no available mounting edge in the 
economy to mid-range

 sector.

Premium Class

Solution for 

extremely dynamic, 

precision high-end

 applications.

For greater precision

: linear and 

gantry sorting possible. 
Contact us!

Three classes of rack – 

unlimited possibilities

Standard installation concept:

 

permanent connection to mounting 
edge

New feature: free connection option

The flexible modular assembly concept 
makes the Smart Class rack a versatile 
all-rounder.

The correct rack is an essential component in realizing your machine concepts. 
WITTENSTEIN alpha offers three classes of rack Premium Class, Value Class and  
Smart Class to find the right solution for your application requirements.

Have the freedom to implement your ideas! 

New: free connection

  

without mounting edge

Mechanical

 

systems

 

Rack & Pinion

  

system

Extremely flexible concept

Free connection concept:

The absence of the mounting edge allows simple and uncomplicated mounting of the 
rack parallel to the machine guide.

Modular machine concept:

The 60 mm hole pattern and length of 480 mm 

are compatible with the hole 

patterns on linear guides

 produced by well-known manufacturers and enable the 

implementation of modular machine concepts.

Clearing the way for 

unlimited movement paths.

p

t

L

z

a)

a

1

B

d

d

1

b)

D

f

+0.5

h

h

B

h

D

H

I

I

1

L

1

2

6.67

1000

150

31.7

936.6

24

7

5.7

11

2

22

8

7

24

62.5

125

8.5

3

10

1000

100

35

930

29

10

7.7

15

2

26

9

9

29

62.5

125

10.3

4

13.33

1000

75

33.3

933.4

39

10

7.7

15

3

35

12

9

39

62.5

125

13.8

5

16.67

1000

60

37.5

925

49

14

11.7

20

3

34

12

13

39

62.5

125

17.4

6

20

1000

50

37.5

925

59

18

15.7

26

3

43

16

17

49

62.5

125

20.9

p

t

L

z

a)

a

1

B

d

d

1

b)

D

f

+0.5

h

h

B

h

D

H

I

I

1

L

1

2

6.67

480

72

12

453

24

9

7.7

15

2

2

15.5

8.5

24.2

30

60

8.5

3

10

480

48

10.2

453

29

11

7.7

17

2

3

19.5

10.5

29.2

28.2

60

10.3

4

13.33

480

36

7

452

39

14

9.7

20

3

4

28

13

39.2

23

60

13.8

p

t

L

z

a)

a

1

B

d

d

1

b)

D

f

+0.5

h

h

B

h

D

I

I

1

L

1

2

6.67

500

75

31.7

436.6

24

7

5.7

11

2

22

8

7

24

62.5

125.0

8.5

2

6.67

333

50

31.7

269.9

24

7

5.7

11

2

22

8

7

24

62.5

104.2

8.5

2

6.67

167

25

31.7

103.3

24

7

5.7

11

2

22

8

7

24

62.5

41.7

8.5

3

10

500

50

35.0

430

29

10

7.7

15

2

26

9

9

29

62.5

125.0

10.3

3

10

250

25

35.0

180

29

10

7.7

15

2

26

9

9

29

62.5

125.0

10.3

4

13.33

507

38

18.3

460

39

12

9.7

18

3

35

12

11

39

62.5

125.0 

c)

13.8

5

16.67

500

30

37.5

425

49

14

11.7

20

3

34

12

13

39

62.5

125.0

17.4

6

20

500

25

37.5

425

59

18

15.7

26

3

43

16

17

49

62.5

125.0

20.9

Module 

All dimensions in [mm]
Cumulative pitch error Fp: 35 µm/1000 mm
Single pitch error fp:  8 µm; 10 µm at m5 and m6 

b)

 Recommended tolerance dimension: 6

H7

/8

H7

/10

H7

/12

H7

/16

H7

Value Class rack

Module 

All dimensions in [mm]
Cumulative pitch error Fp: 30 µm/500 mm
Single pitch error fp: 6 µm

b)

 Recommended tolerance dimension: 8

H7

, 10

H7

 

Smart Class rack

Module 

All dimensions in [mm]
Cumulative pitch error Fp: 12 µm for m2 (500 mm) and m3 (250 mm in length); Fp: 15 µm for m > 2
Single pitch error fp: 3 µm

b)

 Recommended tolerance dimension: 6

H7

/8

H7

/10

H7

/12

H7

/16

H7

 

c)

 Hole spacing between two racks on module 4 is 131.67 mm.

Premium Class rack

New feature: free connection option

p

t

 = Reference circle pitch

z  = Number of teeth
m = Module

p

t

 = Reference circle pitch

z  = Number of teeth
m = Module

p

t

 = Reference pitch circle

z  = Number of teeth
m = Module

Dimensions

Racks

Please refer to the operating instructions available at 

www.wittenstein-alpha.com

 for instructions on assembly and design of the  

machine bed

330

alpha

Pr

ecision System

Economy System

Smart System

Mechanical

 

systems

 

Rack & Pinion

  

system

a)

  Installing several racks leads to small gaps 

between the individual parts. 

  Gearing hardened and ground
  Profile ground on all sides
  Pressure angle 

a

= 20°, right-handed

a)

  Installing several racks leads to small gaps 

between the individual parts. 

  Gearing hardened and ground
  Profile ground on all sides
  Pressure angle 

a

= 20°, right-handed

a)

a)

a)

a)

  Installing several racks leads to small gaps 

between the individual parts.

  Gearing hardened and ground
   Profile ground on all sides
  Pressure angle 

a

= 20°, right-handed

331

 

 

 

 

 

 

 

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