BOSCH REXROTH
R067302500
$116.45 USD
- BOSCH REXROTH
- Material:R067302500
- Model:KBB-O-25
Quantity in stock: 0
The Bosch Rexroth SUPER LINEAR BUSH (R067302500) is a high-quality linear bushing designed for precise linear motion applications. This model, part of the Super LB B series, is characterized by its open design without a seal, which makes it suitable for fully supported shafts where other linear guides may fail due to warping from imprecise substructures. The SUPER LINEAR BUSH is crafted with steel bearing plates that feature machined ball guide grooves and optimized ball lead-in chamfers, ensuring smooth travel and a long service life. The bushing has no self-alignment feature, which means it can transfer lower tipping forces along the axial direction. It boasts a high travel speed capability and can handle maximum accelerations effectively. The product is engineered with ball retainers and an outer sleeve made of either PA or POM materials, while the balls themselves are constructed from rolling bearing steel. This model does not require initial lubrication, which simplifies installation and maintenance. Capable of operating within an ambient temperature range of -30°C to +80°C, the SUPER LINEAR BUSH maintains its performance in various environments. With a dynamic load capacity C and static load rating C0 that apply to the main direction of loading, this bushing ensures reliable operation under various load conditions. It has been tested for total travel from 100 km to 50 km without failure, highlighting its durability. The SUPER LINEAR BUSH features a low friction coefficient that varies depending on load conditions but remains efficient under both heavy and light loads when lubricated with oil. The product's weight is minimal at 0.2 kg, contributing to its ease of integration into various systems without adding significant mass. Overall, the Bosch Rexroth SUPER LINEAR BUSH (R067302500) provides robust performance for applications requiring precise linear motion control with high requirements for smoothness and longevity in operation.
Super LB B, open, 25, without seal
Super linear bushing
Super B (no self-alignment feature)
Open
Shaft diameter d = 25
Without seal
Unpacked Weight: 0.119 kg
| Low-cost linear bushing for high requirements |
| Steel bearing plates with machined ball guide grooves and optimized ball lead-in chamfers for outstandingly smooth travel and a long service life |
| Without self-alignment feature for transferring lower tipping force along the axial direction |
| Open linear bushing on fully supported shafts for applications where other linear guides tend to warp due to imprecise substructures. |
| High travel speed (5 m/s) |
| With longitudinal seal |
| Integrated wiper seals, external seals or no wiper seals |
| Ball retainer and outer sleeve made of PA or POM |
| Balls made of rolling bearing steel |
| No initial lubrication |
| Data Sheet | Download Data Sheet |
| 2D CAD | Download 2D CAD |
| 2D CAD | Download 2D CAD |
| 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 |
| Series | Super B (no self-alignment feature) |
| Footnote friction force FR | 1. One wiper seal: Multiply value with factor 0.5 2. 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. |
| Size C1 H13 | 43.7 |
| Footnote dynamic load capacity C | The load capacities apply for the main direction of loading. |
| Max. acceleration amax | 150 |
| Footnote friction coefficient μ | Friction coefficients of unsealed linear bushings when lubricated with oil. The friction coefficient is lowest under heavy load, but can still be above the specified value even under a low load. |
| Permissible ambient temperature | -10 °C ... +80 °C |
| Size E | 11.5 |
| Outer diameter D | 40 |
| Breakaway force | 4.5 |
| Maximum permissible linear speed vmax | 3 |
| Size D | 40 |
| Friction coefficient μ | 0,001 ... 0,0025 |
| Footnote static load capacity C0 | The load capacities apply for the main direction of loading. |
| Static load rating C0 | 2250 |
| Size C h13 | 58 |
| Size C2 | 1.85 |
| Friction coefficient μ max. | 0.0025 |
| Note: Maximum permissible speed vmax | Speeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts. Tests have shown total travel from 50 • 105 m to 100 • 105 m without failure. |
| Friction force | 2 |
| Friction coefficient μ min. | 0.001 |
| Productgroup ID | 17 |
| Permissible ambient temperature (max) | |
| Angle α | 57 |
| Permissible ambient temperature (min) | |
| Friction force FR footnote 2 | 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. |
| Footnote breakaway force | One wiper seal: Multiply value with factor 0.5 |
| Shaft diameter d | 25 |
| Linear guide type | Linear bushing and shaft |
| Filter for linear bushings and shafts | Linear bushings |
| Format of linear bushings | O – Open |
| Dynamic load capacity C | 4130 |
| Weight | 0.119 |
| Size D1 with tolerance | |
| Radial clearance shaft h6/bore K7 | |
| Radial clearance shaft/bore h6/H7 | |
| Radial clearance shaft h6/bore M7 |
General technical data
|
Ø d |
mm |
12 | 16 | 20 | 25 | 30 | 40 | 50 | |||||||
|
amax |
m/s² |
150 | |||||||||||||
|
vmax 1) |
m/s |
3 | |||||||||||||
|
m |
kg |
0.018 | 0.022 | 0.051 | 0.102 | 0.155 | 0.3 | 0.48 | |||||||
|
FR 2) |
N |
0.8 | 3 | 1 | 4 | 1.5 | 5 | 2 | 6 | 2.5 | 8 | 3 | 10 | 4 | 12 |
|
Breakaway force 3) |
N |
1.5 | 6 | 2 | 9 | 3 | 10 | 4.5 | 14 | 6 | 18 | 8 | 24 | 10 | 30 |
|
μ 4) |
0.001 ... 0.0025 | ||||||||||||||
|
Rows of balls |
4 | 5 | |||||||||||||
|
Shaft radial clearance h6/bore H7 |
µm |
+ 38 + 10 |
+ 43 + 11 |
+ 50 + 12 |
|||||||||||
|
Shaft radial clearance h6/bore K7 |
µm |
+ 23 - 5 |
+ 25 - 7 |
+ 29 - 9 |
|||||||||||
|
Shaft radial clearance h6/bore M7 |
µm |
+ 17 - 11 |
+ 18 - 14 |
+ 20 - 18 |
|||||||||||
|
Operating conditions |
|||||||||||||||
|
Permissible ambient temperature (min ... max) |
-10 °C ... +80 °C | ||||||||||||||
| 1) | Speeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts. Tests have shown total travel from 50 • 105 m to 100 • 105 m without failure. |
| 2) | 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. |
| 3) | One wiper seal: Multiply by a factor of 0.5. |
| 4) | Friction coefficients of unsealed Linear Bushings when lubricated with oil. The friction coefficient is lowest under heavy load, but can still be above the specified value even under a low load. |
Load capacities and load moments
|
Ød |
mm |
12 | 16 | 20 | 25 | 30 | 40 | 50 |
|
C 1) |
N |
1060 | 1500 | 2570 | 5040 | 5020 | 8620 | 12500 |
|
C0 1) |
N |
510 | 830 | 1180 | 2770 | 2880 | 4480 | 6620 |
| 1) | The load ratings apply for the main direction of loading. |
| 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 |
|
FR |
Friction force |
N |
|
m |
Mass |
kg |
|
vmax |
Maximum permissible speed |
m/s |
|
μ |
Friction coefficient |
For load in the direction of opening, please refer to the loading diagrams (see "Diagrams" section).
Impact of load direction on load rating of open Linear Bushings
The load ratings C and C0 apply for the main direction of loading ρ = 0°. For all other load directions, the load ratings must be multiplied by the factors fρ (dynamic load rating C) or fρ0 (static load rating C0).
Installing specific Linear Bushings can prevent reductions in load capacity (see Linear Set with side opening).
Reduced load capacity with short stroke
In case of short stroke, the service life of the shaft is less than that of the super Linear Bushing. The load ratings C specified in the tables must therefore be multiplied by the factor f.s .
| 1) | fs = factor |
| 2) | s = movement path |
Definition of dynamic load ratings
Sealing
Super linear bushings come both with integrated and separate wiper seals. The separate wiper seals are specially designed for applications in high contamination environments. An additional seal (for example, bellows, extendable cover) is necessary for extremely high contamination environments. The open super linear bushings can also come fully sealed (with longitudinal seal), however this increases friction.
Dimensions
|
Ød |
mm |
12 | 16 | 20 | 25 | 30 | 40 | 50 | |
|
D |
mm |
22 | 26 | 32 | 40 | 47 | 62 | 75 | |
|
α |
° |
66 | 68 | 55 | 57 | 56 | 54 | ||
|
C |
h13 |
mm |
32 | 36 | 45 | 58 | 68 | 80 | 100 |
|
C1 |
H13 |
mm |
22.6 | 24.6 | 31.2 | 43.7 | 51.7 | 60.3 | 77.3 |
|
C2 |
mm |
1.3 | 1.6 | 1.85 | 2.15 | 2.65 | |||
|
E 1) |
mm |
6.5 | 9 | 11.5 | 14 | 19.5 | 22.5 | ||
| 1) | Minimum size in relation to Ø d. |
Radial clearance
The radial clearance values shown in the table have been determined from statistics and correspond to values expected in practice.
Adjusting radial clearance
The radial clearance of all Linear Bushings can be adjusted. If, for instance, a zero-clearance guideway is needed, the radial clearance of the Linear Bushing must be reduced using the adjusting screw on the housing (see also Linear Sets) until slight resistance occurs when rotating the shaft. Secure the adjusting screw for applications where vibrations are present.
Adjusting preload
For preloading, the aforementioned adjustment is made using an adjustment shaft that is weaker by the degree of preload.
Customer-built housings
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.
Wiper seals for open-type Super Linear Bushings and Standard Linear Bushings
Wiper seals for open-type Super Linear Bushings and Standard Linear Bushings
Galvanized metal case Elastomer wiper sealCatalog
Instructions
Service
CAD data
Grooved taper pin
Grooved taper pin
Catalog
Instructions
Service
Locating screws for super linear bushings A and B
Locating screws for super linear bushings A and B
Locating screws are self-locking.Catalog
Instructions
Service