BOSCH REXROTH
R065052000
$188.71 USD
- BOSCH REXROTH
- Material:R065052000
- Model:KBMT-20-DD
Quantity in stock: 0
The Bosch Rexroth STD.LINEAR BUSHING KBMT-20-DD (R065052000) is a high-grade standard linear bushing designed for robust applications where reliability and durability are paramount. This tandem linear bushing features a hardened and ground outer sleeve, which ensures its suitability for harsh environments such as woodworking, foundries, and cement plants. Its rugged all-metal design, complemented by steel ball retainers, allows it to withstand heavy contamination and maintain performance under challenging conditions. The KBMT-20-DD model is equipped with two integral wiper seals that prevent the ingress of dirt and debris, thereby safeguarding the internal components from jamming. The presence of multiple lubricant reservoirs within the bushing facilitates extended lubrication intervals or even lifetime lubrication in certain applications. Moreover, the POM ball retainer within this linear bushing optimizes smooth ball movement while enhancing load-bearing capabilities. This particular model has been engineered to handle dynamic loads efficiently, with a maximum dynamic load capacity (Cmax) that ensures dependable operation over a total travel distance of 100 km. For applications requiring less travel distance, the load capacities can be adjusted accordingly by applying the provided multiplication factors. The STD.LINEAR BUSHING KBMT-20-DD operates effectively within a permissible ambient temperature range, maintaining its integrity even in fluctuating environmental conditions. It also boasts an impressive breakaway force and maximum permissible linear speed (vmax), which attest to its ability to perform rapid movements without sacrificing stability or precision. With dimensions that include a specific outer diameter (D) and length of the linear bushing, this product is designed for ease of integration into various machine designs. Its weight has been optimized to balance durability with functionality, making it an ideal choice for designers seeking reliable linear motion solutions without excessive bulk.
Standard LB, tandem, 20, with two seals
standard linear bushing
Standard (metal)
Tandem
Shaft diameter d = 20
With two seals
Version: Standard
Unpacked Weight: 0.18 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 |
| 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 |
| Rows of balls | 5 |
| 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 | 1300 |
| 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 |
| Size C1 | 61 |
| Outer diameter D | 32 |
| Breakaway force | 12 |
| Maximum permissible linear speed vmax | 2.5 |
| Size D | 32 |
| Length of linear bushing | 80 |
| Size D1 | 30.5 |
| Size C2 | 1.6 |
| Friction force | 4 |
| 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) | |
| Minimum static load capacity C0min | 1720 |
| Maximum static load capacity C0max | 2500 |
| Minimum dynamic load capacity Cmin | 1100 |
| Shaft diameter d | 20 |
| Linear guide type | Linear bushing and shaft |
| Filter for linear bushings and shafts | Linear bushings |
| Format of linear bushings | T – Tandem |
| Footnote minimum static load capacity C0min | |
| Static longitudinal moment load capacity ML0 | 26 |
| Footnote maximum static load capacity C0max | |
| Weight | 0.18 |
| Size D1 with tolerance | 30.5 mm |
| Size C | 80 |
General technical data
|
Ø d |
mm |
8 | 12 | 16 | 20 | 25 | 30 | 40 |
|
amax |
m/s² |
100 | ||||||
|
vmax |
m/s |
2.5 | ||||||
|
m |
kg |
0.04 | 0.08 | 0.12 | 0.18 | 0.43 | 0.62 | 1.4 |
|
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 |
|
D |
mm |
16 | 22 | 26 | 32 | 40 | 47 | 62 |
|
C |
46 mm -0.3 | 61 mm -0.3 | 68 mm -0.3 | 80 mm -0.3 | 112 mm -0.4 | 123 mm -0.4 | 151 mm -0.4 | |
|
C1 |
33 mm -0.3 | 45.8 mm -0.3 | 49.8 mm -0.3 | 61 mm -0.3 | 82 mm -0.4 | 104.2 mm -0.4 | 121.2 mm -0.4 | |
|
C2 |
mm |
1.1 | 1.3 | 1.6 | 1.85 | 2.15 | ||
|
D1 |
mm |
15.2 | 21 | 24.9 | 30.5 | 38 | 44.5 | 59 |
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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