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BOSCH REXROTH
R072422000


$239.81 USD
  • BOSCH REXROTH
  • Material:R072422000
  • Model:TORQUE RESIST.BUSH KBDR4-H-20DD

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth TORQUE RESIST.BUSH KBDR4-H-20DD (R072422000) is a high-performance torqueresistant linear bushing designed for self-supporting, torsionally stiff guides with a single shaft. This cylindrical sleeve design integrates four ball guide grooves that are essential for transferring torque effectively. The KBDR4-H-20DD is engineered to work with matching shaft profiles that have machined ball guide grooves, and these shafts are tailored according to customer specifications. The linear bushing features an outer sleeve that is both hardened and ground for durability, while the POM ball retainer and balls made of rolling bearing steel ensure smooth motion and high load capacity. It also includes integrated wiper seals to maintain cleanliness within the system and comes equipped with a fitting key for reliable torque transmission. This model is relubricatable, which allows for easy maintenance and extended service life. With its dynamic load capacity C and static load rating C, the KBDR4-H-20DD can handle minimal values as specified since the direction of loading might not always be clearly defined. The permissible ambient temperature range in which this bushing operates effectively is from -20°C to +80°C, ensuring reliable performance in various working conditions. The maximum permissible linear speed (vmax) and static torsional moment load capacity (Mt) further define its capabilities in demanding applications. The size L specification denotes the bushing's physical dimensions, while the weight indicates its heft which contributes to overall system stability. This linear bushing is part of Bosch Rexroth's Torque Productgroup ID series, highlighting its specialized function in torque-sensitive applications. In summary, the Bosch Rexroth TORQUE RESIST.BUSH KBDR4-H-20DD offers precise guidance with high torque transmission capabilities suitable for various industrial applications requiring robust linear movement solutions. Its design emphasizes performance, longevity, and ease of maintenance making it a valuable component in sophisticated mechanical systems.


Torque-resistant LB, 4-H-20, with two seals

Torque-resistant linear bushing (cylindrical, sleeve design)
Ball guide grooves = 4
Shaft diameter d = 20
With two seals
Without shaft

Unpacked Weight: 0.181 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
Size L with tolerance60 mm -0,2
Size t2.5
SeriesTorque
Productgroup ID17
Size b4
Size D h632
Footnote dynamic load capacity CThe load capacities indicated are minimal values as the direction of loading cannot always be clearly defined.
Shaft diameter, detailed18.2
Permissible ambient temperature (max)+80
Max. acceleration amax150
Permissible ambient temperature-10 °C ... +80 °C
Permissible ambient temperature (min)-10
Maximum permissible linear speed vmax3
Static torsional moment load capacity Mt0133
Footnote static load capacity C0The load capacities indicated are minimal values as the direction of loading cannot always be clearly defined.
Size L126
Static load rating C011300
Shaft diameter d20
Dynamic torsional moment load capacity Mt66
Linear guide typeLinear bushing and shaft
Filter for linear bushings and shaftsLinear bushings
Format of linear bushingsH – Sleeve design
Dynamic load capacity C6200
Size L60
Footnote diameter dActual shaft diameter varies
Size t14
Weight0.181
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 .

technical illustration-R072422000-Torque-resistant LB, 4-H-20, with two seals
1) fs = factor
2) s = movement path

Service life, shaft straightness, stabilized installation

Definition of dynamic load ratings

technical illustration-R072422000-Torque-resistant LB, 4-H-20, with two seals
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

Life expectancy calculation

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.

technical illustration-R072422000-Torque-resistant LB, 4-H-20, with two seals

Lubrication

Directives and standards

Notes