Linear motion guide assembly consists of rail、block、balls、retainer、recirculator、sealing gasket and side panel (see below) When the block moves in a linear direction relative to the rail, balls run along four raceway grooves which have been quenched and precisely finished. In the top of the block, balls again pass through the recirculator into reciprocating hole then into raceway repeatedly. The recirculator has rubber-sealing gasket on both sides to eliminate dust and keep foreign material away.

·  By placing appropriate recirculating balls between rail and block, friction between the block and the rail changes from slide friction to rolling friction, the latter is less than the former greatly . Then :
a.The difference between dynamic and static friction is small. It benefits to raise responsible speed and sensibility of CNC system.
b.Required driving power could be slowed down greatly,compared to the traditional form, which is only 1/10.
c.Compare to V type X-Y cross guide, resistance of friction is only 1/40 of the traditional form.
d.Suitable for high-speed linear motion and instantaneous speed is 10 times of that of sliding guide.
e.High positioning accuracy and high repetitive positioning accuracy.

Roller cross guide consists of two rails with V type groove, retainer and cylinder roller. The cylinder rollers, which range crosswise each other, shuttle along V type ground groove. It can take the load from all directions. The smooth linear motion of high accuracy is realized.

Feature:

1)small rolling friction, good stability;
2)small start friction, good following function;
3)large contact area, small elastic deformation, many efficient motion units, easy motion with high rigidity and load;
4)Flexible structure design, easy installation and use.

A

H

W

M

D

h

G

F

 T 

L

GZV1

8.5

4

3.8

M2

1.8

10

2

80

GZV2

12

6

5.5

M3

2.5

15

2

180

GZV3

18

8

8.4

M4

6

3.1

3.5

25

2

300

GZV4

22

11

10

M5

7.5

4.1

4.5

40

3

500

GZV6

31

15

14.2

M6

9.5

5.2

6

50

4

500

GZV9

44

22

20.2

M8

10.5

6.2

9

50

4

800

GZV12

58

28

27

M10

13.5

8.2

12

100

5

1000

GZV15

71

36

33

M12

16.5

10.2

14

100

6

1000

Notes:
Two rails consist of a set of roller cross guide. The quantity of rails on the same surface means there are some sets of roller cross guide to be used on the same surface. As shown in above formula II means that there are two sets of roller cross guide on the same surface, namely, four rails to be used at the same time.

Dw(mm)

a (mm)

f (mm)

B (mm)

C1(KN)

C01(KN)

GZV1

1.5

1.5

2.5

3.8

0.107

0.118

GZV2

2

2

4

5.6

0.263

0.274

GZV3

3

2.5

5

7.6

0.545

0.597

GZV4

4

5

7

10

1.05

1.16

GZV6

6

6

9

14

2.06

2.41

GZV9

9

9.5

14

21

5.904

6.74

GZV12

12

10

20

25

12.15

13.77

GZV15

15

14

22

34

19.62

22.32

• The roller guide block is a precision linear motion guide. It has strong loading capacity and higher rigidity. In the condition of high frequency back and forth such as repetitive motion, starting and stopping, it can reduce weight of complete machine, transmission gearing and power.
• The roller guide block can reach higher sensitivity and high functional plane linear motion. In the condition of heavy load and varied load it has small elastic transmutation and get stable linear motion and no crawl.
• The roller guide block can center automatically because its rolling body – roller has good guide by its rolling. Therefore the positioning accuracy can be improved.
• The rollers in the roller guide block move circularly. Therefore there is no length limit of machine tools by taking the roller guide block. The quantity of guide block depends on loading capacity and specification.
• The roller guide block has wide application. The small type of guide block is used for linear motion parts of mould and instrument. The big type of guide block is used for plane linear motion of heavy machine tools and precision instrument, especial for NC, CNC machine tools.

Basic structure:
The roller guide block is consisted of self-body, gasket, retailer and roller. Thereinto rolling body is rollers. The cylinders run in the guide continuously and take stated load. The cylinders have center guide and centering automatically by moving to avoid side moving. It is in favor of motion flexibly under load and has long life.

Accuracy grade

2

3

4

Grade code

Height difference

Grade code

Height difference

Grade code

Height
difference

accuracy

B2

0～0.002

C3

0～-0.003

D5

0～-0.005

B4

-0.002～-0.004

C6

-0.003～-0.006

D10

-0.005～-0.01

B6

-0.004～-0.006

C9

-0.006～-0.009

B8

-0.006～-0.008

B10

-0.008～-0.01

Rated load:
The rated load of roller guide block is down load. In short, the detail definition and calculation see life calculation of linear motion guide .
basic rated dynamic load C

The basic rated dynamic load is , i.e. a group of same roller guide block runs separately and 90% of its runs 100x 10 in the condition of no damage of material due to contact fatigue, a constant in the direction and quantity.
basic rated static load Co

Model

length

width

height

Dia. for mounting bore

Center distance of mounting bore

Basic rated load

A

B

C(KN)

C0(KN)

*GZD15×53

52.8

26.5

15

φ3.4

19

19.3

15.7

22.3

 GZD20×68

68

36

20

φ4

20

28

27.5

39.6

*GZD30×92

92

41.5

30

φ4.5

38.1

32.7

58.5

78.1

 *GZD40×132

132

51.4

40

φ5.5

50.8

41.5

121

162

Notice:
Marks * indicates that these specifications being developed
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