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BOSCH REXROTH
R072522000


$287.40 USD
  • BOSCH REXROTH
  • Material:R072522000
  • Model:TORQUE RESIST.BUSH KBDR4-F-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-F-20DD (R072522000) is a high-performance component designed for self-supporting, torsionally stiff guides with a single shaft. This torqueresistant linear bushing comes in a flanged version with four ball guide grooves that are essential for transferring torque efficiently. The product is particularly suitable for applications requiring precise linear motion with the ability to resist torsional forces. The KBDR4-F-20DD features an outer sleeve that has been hardened and ground for durability, along with an innovative POM ball retainer and balls made from rolling bearing steel which ensure smooth and reliable movement. It also includes integrated wiper seals to protect the internal components from contaminants, thus extending the life of the bushing. This model is relubricatable, allowing for maintenance and longevity of the component. It has been designed to accommodate shaft diameters detailed by customer specifications, ensuring a perfect fit for various applications. The dynamic load capacity C and static load rating C are minimal values provided due to varying loading directions in different applications. Furthermore, this bushing can operate within a wide temperature range from -20°C to +80°C, making it versatile for use in diverse environments. The maximum permissible linear speed (vmax) and acceleration (amax) parameters define its operational limits in dynamic situations, while static and dynamic torsional moment load capacities (Mt) indicate its strength against twisting forces. With its robust construction and precise engineering, the Bosch Rexroth TORQUE RESIST.BUSH KBDR4-F-20DD offers reliable performance in demanding linear motion tasks where resistance to torque is crucial. Its size V series torque product group ID ensures compatibility within a range of industrial setups requiring flange format linear bushings.


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

Torque-resistant linear bushing (flanged version)
Ball guide grooves = 4
Shaft diameter d = 20
With two seals
Without shaft

Unpacked Weight: 0.244 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
Relubricatable
Size V4.4
Size L with tolerance60 mm -0,2
SeriesTorque
Productgroup ID17
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
Size S4.5
Size D151
Footnote static load capacity C0The load capacities indicated are minimal values as the direction of loading cannot always be clearly defined.
Size L17
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 bushingsF – Flange
Dynamic load capacity C6200
Size L60
Footnote diameter dActual shaft diameter varies
Size D240
Size L223
Weight0.244
Size D1 with tolerance51 mm

General technical data

Ø d 1)

mm

6 8 10 13 16 20 25 30 40 50

amax

m/s²

150

vmax

m/s

3

m

kg

0.037 0.042 0.094 0.1 0.2 0.22 0.32 0.51 1.15 2.1

Operating conditions

Permissible ambient temperature (min ... max)

-10 °C ... +80 °C
1) Actual shaft diameter varies

Load capacities and load moments

Ød 1)

mm

6 8 10 13 16 20 25 30 40 50

C 2)

N

970 1150 2170 2120 4860 6200 9800 14800 24400 36600

C0 2)

N

2280 2870 5070 4890 11200 11300 16100 23200 37500 74200

Mt

Nm

1.2 1.7 3.5 16.7 48 66 129 229 500 1100

Mt0

Nm

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-R072522000-Torque-resistant LB, 4-F-20, with two seals
1) fs = factor
2) s = movement path

Service life, shaft straightness, stabilized installation

Definition of dynamic load ratings

technical illustration-R072522000-Torque-resistant LB, 4-F-20, with two seals
a) Concentricity tolerance

Dimensions

Ød 1)

mm

6 8 10 13 16 20 25 30 40 50

Ød ‒ actual 2)

mm

6 8 10 13 16 18.2 23 28 37.4 47

D

h6

mm

14 16 21 24 31 32 37 45 60 75

D1

mm

30 32 42 43 50 51 60 70 90 113

D2

mm

22 24 32 33 40 47 54 72 91

L

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

5 6 7 9 10 14 16

L1

5 mm 6 mm 7 mm 9 mm 10 mm 14 mm 16 mm

L2

mm

7.5 10.5 11 18 23 26 30 36 40

O

mm

1 1.5 2 3 4

S 3)

mm

3.4 4.5 5.5 6.6 9 11

V

mm

3.3 4.4 5.4 6.5 8.6 11
1) Actual shaft diameter varies
2) h7 tolerance
3) Fixing screws ISO 4762-8.8

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-R072522000-Torque-resistant LB, 4-F-20, with two seals

Lubrication

Directives and standards

Notes