BOSCH REXROTH
R072421300
$164.24 USD
- BOSCH REXROTH
- Material:R072421300
- Model:TORQUE RESIST.BUSH KBDR4-H-13DD
Quantity in stock: 0
The Bosch Rexroth TORQUE RESIST.BUSH KBDR4-H-13DD (R072421300) is a high-precision torqueresistant linear bushing designed for self-supporting, torsionally stiff guides with a single shaft. This cylindrical, sleeve-design bushing features four ball guide grooves that are essential for transferring torque efficiently. The matching shaft profiles come with machined ball guide grooves tailored to customer specifications. Equipped with integrated wiper seals, the KBDR4-H-13DD ensures cleanliness and longevity of the system by preventing contamination. The outer sleeve is hardened and ground for durability, while the POM ball retainer and balls made of rolling bearing steel contribute to smooth motion and reliable performance. This model also includes a fitting key for secure torque transmission. Designed to be relubricatable, the KBDR4-H-13DD allows for easy maintenance, extending the life of the bushing. It offers dynamic load capacities that serve as minimal values due to varying loading directions. The static torsional moment load capacity and dynamic torsional moment load capacity are indicative of its robustness in handling loads. The linear bushing operates within a permissible ambient temperature range and can withstand maximum acceleration and linear speed limits specified by Bosch Rexroth. Its size L denotes its length dimension, which correlates with its static and dynamic load ratings. Overall, this Bosch Rexroth linear bushing is an integral component for applications requiring precise motion control with an emphasis on torque resistance. Its design ensures reliability in challenging environments while providing ease of maintenance through its relubrication feature.
Torque-resistant LB, 4-H-13, with two seals
Torque-resistant linear bushing (cylindrical, sleeve design)
Ball guide grooves = 4
Shaft diameter d = 13
With two seals
Without shaft
Unpacked Weight: 0.0665 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 | 36 mm -0,2 |
| Size t | 1.5 |
| Series | Torque |
| Productgroup ID | 17 |
| Size b | 3 |
| Size D h6 | 24 |
| 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 | 13 |
| 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 | 39.2 |
| Footnote static load capacity C0 | The load capacities indicated are minimal values as the direction of loading cannot always be clearly defined. |
| Size L1 | 15 |
| Static load rating C0 | 4890 |
| Shaft diameter d | 13 |
| Dynamic torsional moment load capacity Mt | 16.7 |
| 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 | 2120 |
| Size L | 36 |
| Footnote diameter d | Actual shaft diameter varies |
| Size t1 | 3 |
| Weight | 0.0665 |
| 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.
