BOSCH REXROTH
R074152500
$332.43 USD
- BOSCH REXROTH
- Material:R074152500
- Model:FLANGE LIN.BUSHING KBMFT-25-DD
Quantity in stock: 0
The Bosch Rexroth FLANGE LIN.BUSHING KBMFT-25-DD (R074152500) is a high-quality flange linear bushing designed for demanding applications where durability and reliability are paramount. This standard metal, tandem flange linear bushing features a rugged all-metal design that can withstand harsh environments and heavy contamination, making it an ideal choice for use in industries such as woodworking, foundries, and cement plants. The shaft diameter is precision-engineered to ensure a snug fit, while the integrated wiper seals prevent contaminants from entering and causing jamming. The KBMFT-25-DD is equipped with many pockets that act as lubricant reservoirs. These pockets not only extend the intervals between necessary lubrication but also have the potential to enable lubrication for life under certain conditions. The outer sleeve of the bushing is hardened and ground for additional strength, while the POM ball retainer ensures smooth movement of the rolling bearing steel balls within. This model boasts an impressive maximum dynamic load capacity, with specific values based on total travel distances of either 100,000 m or 50,000 m. For applications requiring higher temperatures, unsealed linear bushings with steel ball retainers should be considered to maintain load capacity. The KBMFT-25-DD can handle maximum accelerations and operates within a specified permissible ambient temperature range. The product's design includes two seals for added protection against contaminants and features an outer diameter that allows for easy integration into various systems. Additionally, it has been designed with attention to frictional forces which are affected by speed and lubrication conditions when not under radial load. Overall, the Bosch Rexroth FLANGE LIN.BUSHING KBMFT-25-DD offers robust performance for linear motion applications requiring precise guidance under challenging conditions. Its construction speaks to a commitment to quality and efficiency in facilitating smooth linear motion across a broad spectrum of industrial uses.
Flange LB, flange, tandem, 25, with two seals
Flange linear bushing
Standard (metal)
Flanged, tandem
Shaft diameter d = 25
With two seals
Version: Standard
Unpacked Weight: 0.528 kg
| Rugged all-metal design 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 |
| Data Sheet | Download Data Sheet |
| 3D CAD | Download 3D CAD |
| 3D CAD | Download 3D CAD |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Size V | 5.1 |
| Size L with tolerance | 112 mm ±0,3 |
| Rows of balls | 6 |
| Footnote shaft radial clearance h6 | Determined from working bore diameter and shaft tolerance statistics. Recommended housing bore tolerance: H6 or H7 |
| Series | Standard (metal) |
| Footnote friction force FR | 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. |
| Maximum dynamic load capacity Cmax | 1350 |
| Footnote permissible ambient temperature (min ... max) | Only unsealed linear bushings with steel ball retainers may be used at higher temperatures. Make allowance for reductions in load capacity. |
| Max. acceleration amax | 100 |
| Permissible ambient temperature | -10 °C ... +80 °C |
| Outer diameter D | 40 |
| Breakaway force | 14 |
| Maximum permissible linear speed vmax | 2.5 |
| Size D | 40 |
| Size D1 | 62 |
| Friction force | 5 |
| Footnote minimum dynamic load capacity Cmin | The 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 Cmax | The 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 ID | 17 |
| Permissible ambient temperature (max) | |
| Permissible ambient temperature (min) | |
| Size S | 5.5 |
| Minimum static load capacity C0min | 3240 |
| Size L1 | 8 |
| Maximum static load capacity C0max | 4200 |
| Minimum dynamic load capacity Cmin | 1250 |
| Shaft diameter d | 25 |
| Linear guide type | Linear bushing and shaft |
| Filter for linear bushings and shafts | Linear bushings |
| Format of linear bushings | FT – Flanged, tandem |
| Footnote minimum static load capacity C0min | |
| Static longitudinal moment load capacity ML0 | 61 |
| Size L | 112 |
| Size D2 | 51 |
| Footnote maximum static load capacity C0max | |
| Size B | 50 |
| Weight | 0.528 |
| Size D1 with tolerance | 62 mm |
General technical data
|
Ø d |
mm |
8 | 12 | 16 | 20 | 25 | 30 | 40 |
|
amax |
m/s² |
100 | ||||||
|
vmax |
m/s |
2.5 | ||||||
|
m |
kg |
0.05 | 0.09 | 0.14 | 0.23 | 0.5 | 0.72 | 1.6 |
|
FR 1) |
N |
0.5 | 2 | 3 | 4 | 5 | 6 | 8 |
|
Breakaway force |
N |
1 | 6 | 9 | 12 | 14 | 18 | 24 |
|
Rows of balls |
4 | 5 | 6 | |||||
|
Working bore diameter tolerance |
µm |
+ 9 - 1 |
+ 11 - 1 |
+ 13 - 2 |
+ 16 - 4 |
|||
|
Shaft radial clearance h6 2) |
µm |
+ 15 + 2 |
+ 17 + 2 |
+ 19 + 2 |
+ 20 + 3 |
+ 22 + 2 |
+ 27 + 1 |
|
|
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 |
8 | 12 | 16 | 20 | 25 | 30 | 40 |
|
Cmin |
N |
340 | 650 | 750 | 1100 | 1250 | 2000 | 2800 |
|
Cmax |
N |
390 | 750 | 860 | 1300 | 1350 | 2150 | 3000 |
|
C0min |
N |
470 | 840 | 880 | 1720 | 3240 | 4000 | 6600 |
|
C0max |
N |
660 | 1200 | 1260 | 2500 | 4200 | 5000 | 8400 |
|
ML0 |
Nm |
4.5 | 11 | 13 | 26 | 61 | 82 | 165 |
| 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 |
|
ML0 |
Static longitudinal moment load capacity |
Nm |
|
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.
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).
Dimensions
|
Ød |
mm |
8 | 12 | 16 | 20 | 25 | 30 | 40 |
|
B |
mm |
25 | 32 | 35 | 42 | 50 | 60 | 75 |
|
D |
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 |
32 | 42 | 46 | 54 | 62 | 76 | 98 |
|
D2 |
mm |
24 | 32 | 36 | 43 | 51 | 62 | 80 |
|
L |
46 mm ±0.3 | 61 mm ±0.3 | 68 mm ±0.3 | 80 mm ±0.3 | 112 mm ±0.3 | 123 mm ±0.3 | 151 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 | ||
Legend
|
Symbol |
Description |
Unit |
|
Ød |
Shaft diameters |
mm |
|
ML0 |
Static torsional moment laod capacity |
Nm |
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.
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