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BOSCH REXROTH
R100000800

Pre-Shaft- 8-solid shaft -C53

BOSCH REXROTH

MATERIAL:  R100000800

SUMMARY:  Pre-Shaft- 8-solid shaft -C53

Due to extremely high demand, please call 888-651-5712 for availability

As part of a linear guide, the role of the shaft places strict requirements on the materials used.

Rexroth offers the ideal shaft material for any diameter range. Extremely consistent surface hardness and hardness depth combine with outstanding purity, consistent structure and balanced grading for extraordinarily long service life under rolling loads.

Solid shafts with shaft diameters 20 mm to 8 m in length available upon request.

Sections are combined for longer overall lengths. Linear bushings can simply be rolled over joints.

Dimensional accuracy and tolerance zones

The diameters of the precision steel shafts come in h6 and h7 tolerance zones. The adjacent table shows information on dimensional accuracy. The diameter tolerance of annealed shaft cross-sections vary slightly from the specified tolerance zone.

technical illustration-R100000800-Pre-Shaft-  8-solid shaft      -C53

Ød

mm

3 5 6 8 10 12 14 15 16 18 20 22 24 25 30 32 35 38 40 45 50 55 60 70 80 100 110

Tolerance grade 1)

h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7 h6 h7

Diameter tolerance

µm

0
- 6
0
- 8
0
- 12
0
- 8
0
- 12
0
- 9
0
- 15
0
- 9
0
- 15
0
- 11
0
- 18
0
- 11
0
- 18
0
- 11
0
- 18
0
- 11
0
- 18
0
- 11
0
- 18
0
- 13
0
- 21
0
- 13
0
- 21
0
- 13
0
- 21
0
- 13
0
- 21
0
- 13
0
- 21
0
- 16
0
- 25
0
- 16
0
- 25
0
- 16
0
- 25
0
- 16
0
- 25
0
- 16
0
- 25
0
- 16
0
- 25
0
- 19
0
- 30
0
- 19
0
- 30
0
- 19
0
- 30
0
- 19
0
- 30
0
- 22
0
- 35
0
- 22
0
- 35

t1

µm

3 4 5 4 5 4 6 4 6 5 8 5 8 5 8 5 8 5 8 6 9 6 9 6 9 6 9 6 9 7 11 7 11 7 11 7 11 7 11 7 11 8 13 8 13 8 13 8 13 10 15 10 15

t2 2)

µm

4 5 8 5 8 6 9 6 9 8 11 8 11 8 11 8 11 8 11 9 13 9 13 9 13 9 13 9 13 11 16 11 16 11 16 11 16 11 16 11 16 13 19 13 19 13 19 13 19 15 22 15 22

t3 3)

µm/m

150 120 100

Ra

µm

0.32
1) Other tolerances upon request
2) Measurements if differences in diameter
3) The smallest possible value is 40 µm for lengths under 1 m. Straightness is measured based on ISO 13012.

Measurement of straightness based on ISO 13012

The measuring points are evenly distributed between the support points and the shaft sections protruding past them. More supports are used accordingly for long, thin shafts. Straightness is half of the gauge measurement when turning the shaft 360°.

technical illustration-R100000800-Pre-Shaft-  8-solid shaft      -C53

 

Measurement of roundness

The drawing shows the roundness of a raw shaft compared to a precision steel shaft.

technical illustration-R100000800-Pre-Shaft-  8-solid shaft      -C53

a) Raw shaft

b) Precision shaft

Shaft hardness

The outer zone of the shaft is induction-hardened. Depending on the shaft diameter, the depth of hardness ranges from 0.4 to 2.4 mm. Linear and transverse surface hardness and depth of hardness are highly consistent. This ensures high dimensional consistency and long service life. The adjacent figure shows the cross-section and longitudinal section of a hardened and polished precision steel shaft. The hardened surface zone is made visible by caustic etching.

technical illustration-R100000800-Pre-Shaft-  8-solid shaft      -C53

Technische Daten

Ød

mm

3 5 6 8 10 12 14 15 16 18 20 22 24 25 30 32 35 38 40 45 50 55 60 70 80 100 110

L

mm

- 75 1)

Mill-cut length

mm

400 5800 6100

Lmax 2)

mm

400 5800 6100

Hardness

min. 60 HRC

Material no.

1.1213

Depth of hardness (min.)

mm

0.4 0.6 0.9 1.5 2.2 2.4

m

kg/m

0.06 0.15 0.22 0.39 0.61 0.88 1.2 1.38 1.57 1.98 2.45 2.97 3.53 3.83 5.51 6.27 7.5 8.85 9.8 12.41 15.32 18.53 22.05 30.02 39.21 61.26 74.13
1) Regarding geometry and hardness
2) Solid shafts with shaft diameters 20 mm to 8 m in length available upon request. Sections are combined for longer overall lengths. Linear bushings can simply be rolled over joints.

Legend

Symbol

Description

Unit

Ød

Shaft diameters

mm

L

Length

mm

Lmax

Maximum length

mm

m

Mass

kg/m

t1

Roundness tolerance

μm

t2

Cylindricity

μm

t3

Straightness

μm/m

Ra

Surface roughness

μm

Technical data

Shaft machining

Chamfering

When used as round guides for Linear Bushings, the ends of steel shafts must be chamfered so the ball retainers/wiper seals are not damaged when the Linear Bushings are pressed onto the shafts. The figure and table show the chamfering dimensions. Linear bushings with wiper seals cannot be pressed over sharp edges on the shaft (e.g., retaining ring grooves) since the sealing lips will be damaged.

technical illustration-R100000800-Pre-Shaft-  8-solid shaft      -C53

Shaft diameters

mm

3

4

5

8

10

12

14

16

20

25

25

30

40

50

60

80

Length of chamfers L1

mm

1

1,5

1,5

1,5

1,5

2

2

2

2

2

2

2

3

3

3

3

Processing

Hardened and polished steel shafts are available in mill-cut lengths. These can be cut to size and machined to include:

Spigots Female and male threads Counterbores Radial and axial holes Grooves Other machining

 

Unmachined, cut-to-size shafts come chamfered for accident prevention unless ordered otherwise.

 

Annealing machined sections

Annealing may be necessary when machining shafts due to the hardened outer zone (minor change in size possible).

Length tolerance for cut-to-size shafts

Shaft length

Tolerance (mm)

< 400

±0,5

≤ 400 ‒ 1000

±0,8

≤ 1000 ‒ 2000

±1,2

≤ 2000 ‒ 4000

±2,0

≤ 4000 ‒ 6000

±3,0

≤ 6000 ‒ 8000

±3,5

Steel shafts with smaller length tolerances are also available at additional cost.

Concentric and axial spigot runout

A review in accordance with a specified principle will be performed upon request. Values xxx < 0.02 on request.

technical illustration-R100000800-Pre-Shaft-  8-solid shaft      -C53

a) about 50 mm

Life expectancy calculation

Interconnected shafts – plug-and-socket connection

technical illustration-R100000800-Pre-Shaft-  8-solid shaft      -C53

We also provide interconnectable steel shafts when more than the mill-cut length is needed. One shaft then comes with a spigot-and-recess arrangement, the next with a matching recess (see figure). The interconnected shaft must be supported throughout or at intervals, though generally at the joins (see Section "Shaft support rails"). The shafts must be under axial tension when fastening the shaft support rails so no gaps form at the joins. Linear bushings can simply be rolled over joints.

Directives and standards

Notes