BOSCH REXROTH
LINEAR BUSH
R067003000
$128.59 USD
- BOSCH REXROTH
- Material:R067003000
- Model:KBA-30
Quantity in stock: 0
The Bosch Rexroth SUPER LINEAR BUSH (R067003000) is a state-of-the-art linear motion component designed for precision and durability. This advanced linear bushing, part of the Super LB A series, is closed and comes without a seal, offering a low-cost solution for high requirements in linear motion applications. The SUPER LINEAR BUSH features steel bearing plates with meticulously machined ball guide grooves and optimized ball lead-in chamfers, ensuring exceptionally smooth travel and an extended service life. The product is capable of compensating for shaft deflection and misalignment, maintaining high travel speeds up to several meters per second without requiring initial lubrication. The design includes ball retainers and an outer sleeve crafted from high-quality PA or POM materials, while the balls themselves are made from durable rolling bearing steel. It can handle dynamic load capacities effectively due to its robust construction. This linear bushing is engineered to operate within an ambient temperature range of -30°C to +80°C. The outer diameter measures D, ensuring compatibility with various setups. Its design allows for maximum permissible linear speeds, with the caveat that service life may be limited by increased wear on plastic parts at higher velocities. The SUPER LINEAR BUSH supports a range of static and dynamic load capacities based on total travel distance, with specific multipliers provided for calculations based on different travel lengths. It has been tested for total travels ranging from 10^4 m to 10^5 m without failure. With its low friction coefficient and ability to withstand significant loads while providing smooth motion, this linear bushing is ideal for a variety of applications where precise linear movement is required. The product's weight stands at 0.2 kg and it offers radial clearance options to ensure optimal fitment and performance in your specific application.
Super LB A, closed, 30, without seal
Super linear bushing
Super A (with self-alignment feature)
Closed
Shaft diameter d = 30
Without seal
Unpacked Weight: 0.196 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 |
| Compensates for shaft deflection and misalignment up to 30' |
| High travel speed (5 m/s) |
| No initial lubrication |
| 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 |
| 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 | 6 |
| Series | Super A (with self-alignment feature) |
| Footnote friction force FR | One wiper seal: Multiply value with factor 0.5 |
| Size C1 H13 | 51.7 |
| Maximum dynamic load capacity Cmax | 5860 |
| 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 |
| Outer diameter D | 47 |
| Breakaway force | 6 |
| Maximum permissible linear speed vmax | 3 |
| Size D | 47 |
| Size D1 | 44.5 |
| Friction coefficient μ | 0,001 ... 0,0025 |
| Size C h13 | 68 |
| 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 | 2.5 |
| 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. |
| Friction coefficient μ min. | 0.001 |
| 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) | |
| 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 |
| Minimum static load capacity C0min | 2790 |
| Maximum static load capacity C0max | 3570 |
| Minimum dynamic load capacity Cmin | 4800 |
| Shaft diameter d | 30 |
| Linear guide type | Linear bushing and shaft |
| Filter for linear bushings and shafts | Linear bushings |
| Format of linear bushings | – Closed |
| Footnote minimum static load capacity C0min | |
| Footnote maximum static load capacity C0max | |
| Weight | 0.196 |
| Size D1 with tolerance | 44.5 mm |
| Radial clearance shaft h6/bore K7 | |
| Radial clearance shaft/bore h6/H7 | |
| Radial clearance shaft h6/bore M7 |
General technical data
|
Ø d |
mm |
10 | 12 | 16 | 20 | 25 | 30 | 40 | 50 |
|
amax |
m/s² |
150 | |||||||
|
vmax 1) |
m/s |
3 | |||||||
|
m |
kg |
0.017 | 0.023 | 0.028 | 0.061 | 0.122 | 0.185 | 0.36 | 0.58 |
|
FR 2) 3) |
N |
0.5 | 0.8 | 1 | 1.5 | 2 | 2.5 | 3 | 4 |
|
Breakaway force 2) |
N |
1 | 1.5 | 2 | 3 | 4.5 | 6 | 8 | 10 |
|
μ 4) |
0.001 ... 0.0025 | ||||||||
|
Rows of balls |
5 | 6 | |||||||
|
Shaft radial clearance h6/bore H7 |
µm |
+ 9 + 36 |
+ 38 + 10 |
+ 43 + 11 |
+ 50 + 12 |
||||
|
Shaft radial clearance h6/bore K7 |
µm |
+ 21 - 6 |
+ 23 - 5 |
+ 25 - 7 |
+ 29 - 9 |
||||
|
Shaft radial clearance h6/bore M7 |
µm |
+ 15 - 12 |
+ 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) | One wiper seal: Multiply by a factor of 0.5. |
| 3) | 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. |
| 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 |
10 | 12 | 16 | 20 | 25 | 30 | 40 | 50 |
|
Cmin |
N |
600 | 830 | 1020 | 2020 | 3950 | 4800 | 8240 | 12060 |
|
Cmax |
N |
820 | 1140 | 1400 | 2470 | 4820 | 5860 | 10070 | 14730 |
|
C0min |
N |
330 | 420 | 530 | 1050 | 2180 | 2790 | 4350 | 6470 |
|
C0max |
N |
480 | 620 | 780 | 1340 | 2790 | 3570 | 5570 | 8280 |
| 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 |
|
μ |
Friction coefficient |
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.
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 |
Reduced load capacity with high load
If the load F on a Super Linear Bushing A is more than F > 0.5 x C, the dynamic load rating C decreases.
Definition of dynamic load ratings
Self-alignment feature
The self-alignment feature in the steel bearing plates and machined ball guide grooves ensure quieter travel. The flow chart shows a comparison with a conventional Linear Bushing. The example is based on a load of 800 N and misalignment of about 8 ft (caused by shaft deflection).
Due to the self-alignment feature, two super Linear Bushings must be used on at least one of the shafts in the guide.
| FR = Frictional drag | |
| s = travel distance | |
| v = travel speed | |
| a) | Super Linear Bushing, A Ød 20 |
| b) | Conventional Linear Bushing, Ød 20 |
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 |
10 | 12 | 16 | 20 | 25 | 30 | 40 | 50 | |
|
D |
mm |
19 | 22 | 26 | 32 | 40 | 47 | 62 | 75 | |
|
C |
h13 |
mm |
29 | 32 | 36 | 45 | 58 | 68 | 80 | 100 |
|
C1 |
H13 |
mm |
21.6 | 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 | ||||
|
D1 |
mm |
18 | 21 | 24.9 | 30.5 | 38.5 | 44.5 | 58.5 | 71.5 | |
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.
Metal cases for Super Linear Bushings and standard Linear Bushings
Metal cases for Super Linear Bushings and standard Linear Bushings
Galvanized steelCatalog
Instructions
Service
CAD data
Retaining rings, DIN 471, for Super Linear Bushings A and B
Retaining rings, DIN 471, for Super Linear Bushings A and B
Catalog
Instructions
Service
Retaining rings, DIN 472, for Super Linear Bushings A and B
Retaining rings, DIN 472, for Super Linear Bushings A and B
Catalog
Instructions
Service
Wiper seals for closed-type Super Linear Bushings and Standard Linear Bushings
Wiper seals for closed-type Super Linear Bushings and Standard Linear Bushings
Galvanized metal case Elastomer wiper sealCatalog
Instructions
Service
CAD data