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BOSCH REXROTH
R072521000


$172.44 USD
  • BOSCH REXROTH
  • Material:R072521000
  • Model:TORQUE RESIST.BUSH KBDR4-F-10DD

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-10DD (R072521000) is a high-performance torqueresistant linear bushing designed for self-supporting, torsionally stiff guides with only one shaft. This flanged version comes equipped with two integrated wiper seals to maintain cleanliness within the system and ensure long-lasting operation. The KBDR4-F-10DD features four ball guide grooves which are critical for transferring torque, making it suitable for applications requiring precise motion control and resistance to torsional forces. The bushing's outer sleeve is hardened and ground to provide a durable and robust interface, while the POM ball retainer and balls made of rolling bearing steel ensure smooth, reliable motion. The product is also relubricatable, which contributes to reduced maintenance requirements and extended service life. It has been designed to work with shaft profiles that have machined ball guide grooves, tailored to customer specifications. Moreover, the KBDR4-F-10DD boasts impressive load capacities, both in terms of dynamic load with minimal values as specified by Bosch Rexroth due to variable loading directions, and static torsional moment load capacity. It operates efficiently within a wide range of ambient temperatures from minimum to maximum degrees Celsius as indicated in its specifications. This linear bushing's size V series torque product group ID indicates its place within Bosch Rexroth's lineup of precision components. Its dynamic torsional moment load capacity further exemplifies its capability in demanding applications. With its weight listed at . kg, this component strikes an optimal balance between strength and mass. In summary, the Bosch Rexroth TORQUE RESIST.BUSH KBDR4-F-10DD is an adaptable and robust solution for linear motion systems that require high torque resistance while maintaining precise linear movement.


Torque-resistant LB, 4-F-10, with two seals

Torque-resistant linear bushing (flanged version)
Ball guide grooves = 4
Shaft diameter d = 10
With two seals
Without shaft

Unpacked Weight: 0.103 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 tolerance33 mm -0,2
SeriesTorque
Productgroup ID17
Size D h621
Footnote dynamic load capacity CThe load capacities indicated are minimal values as the direction of loading cannot always be clearly defined.
Shaft diameter, detailed10
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 Mt08.2
Size S4.5
Size D142
Footnote static load capacity C0The load capacities indicated are minimal values as the direction of loading cannot always be clearly defined.
Size L16
Static load rating C05070
Shaft diameter d10
Dynamic torsional moment load capacity Mt3.5
Linear guide typeLinear bushing and shaft
Filter for linear bushings and shaftsLinear bushings
Format of linear bushingsF – Flange
Dynamic load capacity C2170
Size L33
Footnote diameter dActual shaft diameter varies
Size D232
Size L210.5
Weight0.103
Size D1 with tolerance42 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-R072521000-Torque-resistant LB, 4-F-10, with two seals
1) fs = factor
2) s = movement path

Service life, shaft straightness, stabilized installation

Definition of dynamic load ratings

technical illustration-R072521000-Torque-resistant LB, 4-F-10, 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-R072521000-Torque-resistant LB, 4-F-10, with two seals

Lubrication

Directives and standards

Notes