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BOSCH REXROTH
R074054000


$289.43 USD
  • BOSCH REXROTH
  • Material:R074054000
  • Model:FLANGE LIN.BUSHING KBMF-40-DD

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 FLANGE LIN.BUSHING KBMF-40-DD (R074054000) is a high-quality flange linear bushing designed for robust and precise linear motion applications. This standard metal flange bushing features a hardened and ground outer sleeve, which ensures durability and consistent performance even in harsh environments such as woodworking, foundries, and cement plants. It is equipped with steel ball retainers that can withstand heavy contamination and provide extended lubrication intervals or even lubrication for life. The KBMF-40-DD bushing has a shaft diameter of 40mm and incorporates two integrated wiper seals to prevent the ingress of dirt, protecting the internal components from jamming. Additionally, multiple lubricant reservoirs are strategically placed to collect any contaminants that may enter the system. The POM ball retainer within the bushing ensures smooth movement of the rolling bearing steel balls, delivering precise linear guidance. This bushing is capable of handling maximum dynamic load capacities (Cmax) with specific values determined based on total travel distance, ensuring reliable operation over extensive periods. It also has defined minimum static (Cmin) and maximum static load capacities (Cmax), which are essential for various static and dynamic applications. The KBMF-40-DD operates efficiently within a permissible ambient temperature range from -20°C to +80°C, although higher temperatures are possible with certain restrictions. Moreover, it can sustain maximum accelerations (amax) without compromising its structural integrity or performance. With a size designation of V1 for its rows of balls and an outer diameter D1, this flange linear bushing offers a breakaway force parameter that ensures reliability upon initial movement. Its friction force is also noted under no radial load conditions, indicating the smoothness of operation at different speeds and lubrication statuses. Overall, the Bosch Rexroth FLANGE LIN.BUSHING KBMF-40-DD provides an effective solution for linear motion requirements in demanding industrial settings with its rugged construction, integrated sealing technology, and maintenance-friendly design.


Flange LB, flange, 40, with two seals

Flange linear bushing
Standard (metal)
Flange
Shaft diameter d = 40
With two seals
Version: Standard

Unpacked Weight: 0.97 kg
Rugged all-metal design with steel ball retainer for harsh environments and heavy contamination
Many pockets acting as lubricant reservoirs for extended lubrication intervals or lubrication for life
For use in woodworking, foundries, cement plants
Pockets collect any dirt that may have worked its way in to prevent the linear bushing from jamming.
Integrated wiper seals
Hardened and ground outer sleeve
POM ball retainer
Balls made of rolling bearing steel
Size V8.1
Size L with tolerance80 mm ±0,3
Rows of balls6
Footnote shaft radial clearance h6Determined from working bore diameter and shaft tolerance statistics. Recommended housing bore tolerance: H6 or H7.
SeriesStandard (metal)
Footnote friction force FRFrictional drags generated by linear bushings with integrated wiper seals on two sides when not under radial load. The frictional drags depend on speed and lubrication.
Maximum dynamic load capacity Cmax1820
Footnote permissible ambient temperature (min ... max)Higher temperatures are only admissible at linear bushings without wiper seals with ball retainers made of steel. Make allowance for reductions in load capacity.
Max. acceleration amax100
Permissible ambient temperature-10 °C ... +80 °C
Outer diameter D62
Breakaway force24
Maximum permissible linear speed vmax2.5
Size D62
Size D198
Friction force8
Footnote minimum dynamic load capacity CminThe dynamic load capacities are based on a total travel of 100,000 m. When based on 50,000 m, the C values in the table are to be multiplied by 1.26.
Footnote maximum dynamic load capacity CmaxThe dynamic load capacities are based on a total travel of 100,000 m. When based on 50,000 m, the C values in the table are to be multiplied by 1.26.
Productgroup ID17
Permissible ambient temperature (max)+80
Permissible ambient temperature (min)-10
Size S9
Minimum static load capacity C0min3300
Size L113
Maximum static load capacity C0max4200
Minimum dynamic load capacity Cmin1720
Shaft diameter d40
Linear guide typeLinear bushing and shaft
Filter for linear bushings and shaftsLinear bushings
Format of linear bushingsF – Flange
Footnote minimum static load capacity C0min
Size L80
Size D280
Footnote maximum static load capacity C0max
Size B75
Weight0.97
Size D1 with tolerance98 mm

General technical data

Ø d

mm

5 8 12 16 20 25 30 40

amax

m/s²

100

vmax

m/s

2.5

m

kg

0.02 0.033 0.064 0.09 0.15 0.3 0.47 0.98

FR 1)

N

0.4 0.5 2 3 4 5 6 8

Breakaway force

N

0.8 1 6 9 12 14 18 24

Rows of balls

4 5 6

Working bore diameter tolerance

µm

+ 8
0
+ 9
- 1
+ 11
- 1
+ 13
- 2

Shaft radial clearance h6 2)

µm

+ 14
+ 2
+ 15
+ 2
+ 16
+ 3
+ 17
+ 2
+ 19
+ 2
+ 20
+ 3
+ 24
+ 3

Operating conditions

Permissible ambient temperature (min ... max) 3)

-10 °C ... +80 °C
1) Frictional drags generated by Linear Bushings with integrated wiper seals on two sides when not under radial load. The frictional drags depend on speed and lubrication.
2) Determined from working bore diameter and shaft tolerance statistics. Recommended housing bore tolerance: H6 or H7.
3) Only unsealed Linear Bushings with steel ball retainers may be used at higher temperatures. Make allowance for reductions in load capacity.

Load capacities and load moments

Ød

mm

5 8 12 16 20 25 30 40

Cmin

N

160 210 400 460 680 780 1250 1720

Cmax

N

185 240 460 530 800 830 1320 1820

C0min

N

180 235 420 440 860 1620 2000 3300

C0max

N

250 330 600 630 1250 2100 2500 4200
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

Cmax

Maximum dynamic load rating

N

Cmin

Minimum dynamic load rating

N

C0max

Maximum static load rating

N

C0min

Minimum static load rating

N

FR

Friction force

N

m

Mass

kg

vmax

Maximum permissible speed

m/s

Impact of load direction on load rating of closed Linear Bushings

The listed load ratings should be chosen depending on installation in minimum or maximum position and should be based on the calculations. If the load direction is clearly defined and the Linear Bushings can be installed in maximum position, the load ratings Cmax. (dynamic load rating) and C0 max (static load rating) can be used. If aligned installation is not possible or the load direction is not defined, the minimum load ratings must be used.

 

technical illustration-R074054000-Flange LB, flange, 40, with two seals

Definition of dynamic load ratings

Installation dimensions/interchangeability

Standard Linear Bushings have the same installation dimensions as super Linear Bushings. They are interchangeable, differ however in terms of securing, radial clearance, load ratings and lubrication.

Sealing

Standard Linear Bushings come with a wiper seal with shaft diameters of 5 and higher. Open standard Linear Bushings with shaft diameters 20 to 80 can also come fully sealed (with longitudinal seal; increased friction).

technical illustration-R074054000-Flange LB, flange, 40, with two seals

Dimensions

Ød

mm

5 8 12 16 20 25 30 40

B

mm

22 25 32 35 42 50 60 75

D

12 mm -0.013 16 mm -0.013 22 mm -0.016 26 mm -0.016 32 mm -0.019 40 mm -0.019 47 mm -0.019 62 mm -0.022

D1

mm

28 32 42 46 54 62 76 98

D2

mm

20 24 32 36 43 51 62 80

L

22 mm ±0.3 25 mm ±0.3 32 mm ±0.3 36 mm ±0.3 45 mm ±0.3 58 mm ±0.3 68 mm ±0.3 80 mm ±0.3

L1

mm

5 6 8 10 13

L1

5 mm 6 mm 8 mm 10 mm 13 mm

S

mm

3.5 4.5 5.5 6.6 9

V

mm

3.1 4.1 5.1 6.1 8.1

Life expectancy calculation

General mounting instructions

Customer-built housings

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-R074054000-Flange LB, flange, 40, with two seals

Lubrication

Directives and standards

Notes