BOSCH REXROTH
R072421000
$143.84 USD
- BOSCH REXROTH
- Material:R072421000
- Model:TORQUE RESIST.BUSH KBDR4-H-10DD
Quantity in stock: 0
The Bosch Rexroth TORQUE RESIST.BUSH KBDR4-H-10DD (R072421000) is a high-precision, torqueresistant linear bushing designed to provide reliable guidance and support in applications requiring torsionally stiff guides with only one shaft. This cylindrical sleeve design is equipped with four ball guide grooves, which are essential for transferring torque efficiently. The model is particularly suitable for self-supporting structures and can be used in conjunction with matching shaft profiles that have machined ball guide grooves tailored to customer specifications. The KBDR4-H-10DD features an integrated wiper seal system that ensures long-term protection against contamination, thereby extending the product's service life. The outer sleeve of the bushing is hardened and ground for enhanced durability, while the POM ball retainer and balls made of rolling bearing steel ensure smooth motion and high load capacities. For secure installation, a fitting key is provided for effective torque transmission. Maintenance is simplified thanks to the relubricatable design of this model, allowing for easy servicing and extended operational life. The dynamic load capacity C and static load rating C are indicative of minimal values due to varying loading directions that cannot always be clearly defined in applications. Additionally, the dynamic torsional moment load capacity Mt and static torsional moment load capacity Mt offer robust performance under various operating conditions. This linear bushing can operate within a wide range of ambient temperatures and is capable of handling maximum accelerations as well as high linear speeds without compromising its structural integrity or performance. Its precise engineering makes it an ideal choice for sophisticated linear motion tasks where torque resistance is critical. The weight and size L specifications reflect Bosch Rexroth's commitment to producing compact yet powerful components suitable for a variety of industrial applications.
Torque-resistant LB, 4-H-10, with two seals
Torque-resistant linear bushing (cylindrical, sleeve design)
Ball guide grooves = 4
Shaft diameter d = 10
With two seals
Without shaft
Unpacked Weight: 0.05447 kg
| For self-supporting, torsionally stiff guides with only one shaft |
| With four ball guide grooves for transferring torque |
| Matching shaft profiles with machined ball guide grooves |
| Shafts machined to customer specification |
| Integrated wiper seals |
| Hardened and ground outer sleeve |
| POM ball retainer |
| Balls made of rolling bearing steel |
| Fitting key for torque transmission |
| Relubricatable |
| Data Sheet | Download Data Sheet |
| 2D CAD | Download 2D CAD |
| 2D CAD | Download 2D CAD |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Size L with tolerance | 33 mm -0,2 |
| Size t | 1.5 |
| Series | Torque |
| Productgroup ID | 17 |
| Size b | 3 |
| Size D h6 | 21 |
| Footnote dynamic load capacity C | The load capacities indicated are minimal values as the direction of loading cannot always be clearly defined. |
| Shaft diameter, detailed | 10 |
| Permissible ambient temperature (max) | |
| Max. acceleration amax | 150 |
| Permissible ambient temperature | -10 °C ... +80 °C |
| Permissible ambient temperature (min) | |
| Maximum permissible linear speed vmax | 3 |
| Static torsional moment load capacity Mt0 | 8.2 |
| Footnote static load capacity C0 | The load capacities indicated are minimal values as the direction of loading cannot always be clearly defined. |
| Size L1 | 13 |
| Static load rating C0 | 5070 |
| Shaft diameter d | 10 |
| Dynamic torsional moment load capacity Mt | 3.5 |
| Linear guide type | Linear bushing and shaft |
| Filter for linear bushings and shafts | Linear bushings |
| Format of linear bushings | H – Sleeve design |
| Dynamic load capacity C | 2170 |
| Size L | 33 |
| Footnote diameter d | Actual shaft diameter varies |
| Size t1 | 3 |
| Weight | 0.05447 |
| Size D1 with tolerance |
General technical data
|
Ø d 1) |
mm |
4 | 6 | 8 | 10 | 13 | 16 | 20 | 25 | 30 | 40 | 50 |
|
amax |
m/s² |
150 | ||||||||||
|
vmax |
m/s |
3 | ||||||||||
|
m |
kg |
0.0065 | 0.019 | 0.023 | 0.054 | 0.07 | 0.15 | 0.2 | 0.22 | 0.35 | 0.81 | 1.5 |
|
Operating conditions |
||||||||||||
|
Permissible ambient temperature (min ... max) |
-10 °C ... +80 °C | |||||||||||
| 1) | Actual shaft diameter varies |
Load capacities and load moments
|
Ød 1) |
mm |
4 | 6 | 8 | 10 | 13 | 16 | 20 | 25 | 30 | 40 | 50 |
|
C 2) |
N |
680 | 970 | 1150 | 2170 | 2120 | 4860 | 6200 | 9800 | 14800 | 24400 | 36600 |
|
C0 2) |
N |
1220 | 2280 | 2870 | 5070 | 4890 | 11200 | 11300 | 16100 | 23200 | 37500 | 74200 |
|
Mt |
Nm |
0.59 | 1.2 | 1.7 | 3.5 | 16.7 | 48 | 66 | 129 | 229 | 500 | 1100 |
|
Mt0 |
Nm |
1.05 | 2.4 | 3.7 | 8.2 | 39.2 | 110 | 133 | 239 | 412 | 882 | 3180 |
| 1) | Actual shaft diameter varies |
| 2) | The load ratings indicated are minimal values as the load direction cannot always be clearly defined. |
| The load ratings are based on a total travel of 100, 00 m. When based on 50 000 m, the values in the table need to be multiplied by 1.26. |
Legend
|
Symbol |
Description |
Unit |
|
Ød |
Shaft diameters |
mm |
|
amax |
Maximum acceleration travel |
m/s2 |
|
C |
Dynamic load capacity |
N |
|
C0 |
Static load capacity |
N |
|
m |
Mass |
kg |
|
Mt |
Dynamic torsional moment load capacity |
Nm |
|
Mt0 |
Static torsional moment laod capacity |
Nm |
|
vmax |
Maximum permissible speed |
m/s |
Reduced load capacity with short stroke
In case of short stroke, the service life of the shaft is less than that of the torque-resistant Linear Bushing. The dynamic load ratings C in the tables must therefore be multiplied by the factor fs .
| 1) | fs = factor |
| 2) | s = movement path |
Service life, shaft straightness, stabilized installation
Definition of dynamic load ratings
| a) | Sizes 4, 6, 8, 10 |
| b) | Groove depth t |
| Fitting key height t1 | |
| c) | Concentricity tolerance |
Dimensions
|
Ød 1) |
mm |
4 | 6 | 8 | 10 | 13 | 16 | 20 | 25 | 30 | 40 | 50 | |
|
Ød ‒ actual 2) |
mm |
4 | 6 | 8 | 10 | 13 | 16 | 18.2 | 23 | 28 | 37.4 | 47 | |
|
b |
mm |
2 | 2.5 | 3 | 3.5 | 4 | 5 | 7 | 10 | 15 | |||
|
D |
h6 |
mm |
10 | 14 | 16 | 21 | 24 | 31 | 32 | 37 | 45 | 60 | 75 |
|
L |
16 mm -0.2 | 25 mm -0.2 | 33 mm -0.2 | 36 mm -0.2 | 50 mm -0.2 | 60 mm -0.2 | 70 mm -0.3 | 80 mm -0.3 | 100 mm -0.3 | 112 mm -0.3 | |||
|
L1 |
mm |
6 | 10.5 | 13 | 15 | 17.5 | 26 | 33 | 41 | 55 | 60 | ||
|
L1 |
6 mm | 10.5 mm | 13 mm | 15 mm | 17.5 mm | 26 mm | 33 mm | 41 mm | 55 mm | 60 mm | |||
|
O |
mm |
- | 1 | 1.5 | 2 | 3 | 4 | ||||||
|
t |
mm |
1.2 | 1.5 | 2 | 2.5 | 3 | 4 | 4.5 | 5 | ||||
|
t1 |
mm |
2 | 2.5 | 3 | 3.5 | 4 | 5 | 7 | 8 | 10 | |||
| 1) | Actual shaft diameter varies |
| 2) | h7 tolerance |
Recommended housing tolerance: H6 or H7
Installation
Radial clearance: approx. ± 5 μm
Linear bushing and shaft for torque-resistant Linear Bushings with four ball guide grooves come separately. Align the tracks and wiper seals when inserting the shaft and make sure they are not skewed!
General mounting instructions
Initial lubrication
Linear bushings do not come with initial lubrication. Grease the Linear Bushings before use. Service life data is based on initial lubrication and relubricated Linear Bushings.
