BOSCH REXROTH
R074151200
$165.71 USD
- BOSCH REXROTH
- Material:R074151200
- Model:FLANGE LIN.BUSHING KBMFT-12-DD
Quantity in stock: 0
The Bosch Rexroth FLANGE LIN.BUSHING KBMFT-12-DD (R074151200) is a high-quality linear motion component designed for robust applications. This flanged, tandem linear bushing showcases a rugged all-metal construction, making it suitable for harsh environments and heavy contamination areas such as woodworking shops, foundries, and cement plants. It features a hardened and ground outer sleeve with an integrated POM ball retainer, ensuring smooth motion and enhanced durability. The KBMFT-12-DD is equipped with two seals that provide excellent protection against dirt ingress, which helps to prevent jamming. The seals also act as wipers to maintain cleanliness within the system. Additionally, the bushing's design incorporates multiple lubricant reservoirs which contribute to extended lubrication intervals or even allow for lubrication-free operation under certain conditions. This model has been engineered to handle dynamic loads effectively with its maximum dynamic load capacity Cmax and minimum dynamic load capacity Cmin based on a total travel of 100,000 m. For applications requiring higher loads or longer travel distances, adjustments can be made according to the provided multiplication factors. With its standard size V and rows of balls configuration, the KBMFT-12-DD ensures reliable guidance with minimal friction force FR under no radial load conditions. The permissible ambient temperature range ensures operational reliability across various environments. Furthermore, the product's static load capacities (both minimum Cmin and maximum Cmax) along with its static longitudinal moment load capacity ML indicate its suitability for a wide range of stationary applications. The Bosch Rexroth FLANGE LIN.BUSHING KBMFT-12-DD is part of the Linear bushing and shaft product group ID and comes in a flanged tandem format (FT). Its weight of 0.1 kg reflects its solid build without compromising efficiency in linear motion tasks. Overall, this linear bushing offers both performance and reliability for industrial linear motion systems.
Flange LB, flange, tandem, 12, with two seals
Flange linear bushing
Standard (metal)
Flanged, tandem
Shaft diameter d = 12
With two seals
Version: Standard
Unpacked Weight: 0.114 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 | 4.1 |
Size L with tolerance | 61 mm ±0,3 |
Rows of balls | 4 |
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 | 750 |
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 | 22 |
Breakaway force | 6 |
Maximum permissible linear speed vmax | 2.5 |
Size D | 22 |
Size D1 | 42 |
Friction force | 2 |
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 | 4.5 |
Minimum static load capacity C0min | 840 |
Size L1 | 6 |
Maximum static load capacity C0max | 1200 |
Minimum dynamic load capacity Cmin | 650 |
Shaft diameter d | 12 |
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 | 11 |
Size L | 61 |
Size D2 | 32 |
Footnote maximum static load capacity C0max | |
Size B | 32 |
Weight | 0.114 |
Size D1 with tolerance | 42 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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