Артикул: RX8394
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Radial Linear Bushings, R0678 KBR-..
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Надежность
Профессиональная поддержка
Description
- High-precision Linear Bushing for moving very heavy loads
- Radial ball redirection allows numerous rows of balls and extremely high load ratings
- Heavy-duty guide with degrees of freedom in circumferential direction
- For applications where other linear guides tend to warp due to imprecise substructures.
- Very high rigidity
Features
- Extra smooth running
- Fully sealed or without wiper seals
- Separate wiper seals optional
- Relubricatable
- Hardened and machined steel sleeve
- Ball retainer made of reinforced PA
- Balls made of rolling bearing steel
- Two retaining rings
Technical data
General technical data
| Ø d | mm | 30 | 40 | 50 | 60 | 80 | |||||
| amax | m/s² | 50 | |||||||||
| vmax | m/s | 2 | |||||||||
| m | kg | 0.7 | 1.4 | 2.5 | 4.9 | 10.4 | |||||
| FR | N | 8 1) | 12 | 11 1) | 16 | 14 1) | 20 | 16 1) | 24 | 20 1) | 30 |
| Breakaway force | N | 24 | 32 | 40 | 48 | 60 | |||||
| μ 2) | 0.001 ... 0.002 | ||||||||||
| Rows of balls | 12 | ||||||||||
| Shaft radial clearance h6/bore H6 | µm | + 21 - 10 | + 23 - 13 | + 25 - 12 | + 26 - 15 | + 29 - 15 | |||||
| Shaft radial clearance h6/bore JS6 3) | µm | + 12 - 20 | + 13 - 22 | + 14 - 23 | + 15 - 26 | + 16 - 27 | |||||
| Shaft radial clearance h6/bore K6 3) | µm | + 6 - 25 | + 8 - 28 | + 7 - 30 | + 8 - 33 | + 8 - 36 | |||||
| Operating conditions | |||||||||||
| Permissible ambient temperature (min ... max) | -20 °C ... +100 °C | ||||||||||
| 1) | Frictional drag for Linear Bushings with separate wiper seals |
| 2) | Friction coefficients of unsealed radial Linear Bushings when lubricated with oil. |
| 3) | Observe the reduction in service life owing to high preload |
Load capacities and load moments
| Ød | mm | 30 | 40 | 50 | 60 | 80 |
| C 1) | N | 8500 | 13900 | 20800 | 29500 | 54800 |
| C0 1) | N | 9520 | 16000 | 24400 | 34100 | 61500 |
| 1) | The load ratings specified apply for the main direction of loading ρ = 0°. |
| 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 |
Definition of dynamic load ratings
Rigidity
Combining a radial Linear Bushing with a continuously supported guide shaft ensures a precise, rigid design.
- The following figure shows load-dependent spring. The diagram applies for installation:
- Without preload
- With zero clearance (no preload)
- for load direction ρ = 0° – 90° and 270° – 360°
Radial Linear Bushing rigidity
Installing with preload reduces spring. Additional spring in all parts of a linear guide (housing, shaft, shaft support rail) depends on the load direction. Guideline values for total spring with R1076 and R1010 elements: load direction factor multiplied by spring ∂ (from right diagram).
| 1) | F = load N |
| 2) | ∂ = spring mm |
Overall deflection depending on the load direction
| Load direction ∂ | 0° | 90° | 180° | 270° |
| Overall deflection | 1 • ∂ | 1,8 • ∂ | 3,5 • ∂ | 1,8 • ∂ |
Sealing
Radial Linear Bushings come either
- fully sealed Linear Bushings with integrated wiper seals and longitudinal seal, or
- with separate wiper seals
Effect of load direction on load rating
The load ratings C and C0 specified for Radial Linear Bushings apply for load direction ρ = 0°. If the external load is at an angle ρ = 90° – 270°, a reduced load capacity must be factored in. The dynamic load rating is then determined by multiplying the specified dynamic load rating C or C0 by the load direction factors fρ or fρ0. This reduced load capacity can be avoided by careful installation of the radial Linear Bushings.
Diagrams/characteristic curves
Load direction factors
Dimensions
| a) | Fully sealed, lube port S1 center |
Dimensions
| Ød | mm | 30 | 40 | 50 | 60 | 80 | |
| D | mm | 60 | 75 | 90 | 110 | 145 | |
| C | h11 | mm | 75 | 100 | 125 | 150 | 200 |
| S1 | mm | 3 | 4 | ||||
| W 1) | mm | 14 | 19.5 | 24.5 | 29 | 39 | |
| 1) | Minimum size in relation to shaft diameter d. |
Legend
| Symbol | Description | Unit |
| Ød | Shaft diameters | mm |
| C/C0 | Main direction of loading |
Project planning information
Life expectancy calculation
Mounting
General mounting instructions
Installation, securing
Maintenance
Lubrication
Accessories
R1018, for radial linear bushings
R1018, for radial linear bushings
- Shaft support rail material: Steel
Wiper seals for open-type Radial Linear Bushings
Wiper seals for open-type Radial Linear Bushings
- Steel retaining ring
- Elastomer wiper seal
Certification
Directives and standards
Safety Instructions
Notes
Downloads
 | Radial compact sets Manual | R320103853 | 2005-04-01 | English, French, German, Italian | PDF | 478k Product Groups: Linear Bushings and Shafts |
| Kugelbüchsenführungen Catalog | R999000467 | 2015-02-01 | German | PDF | 14.9MB Product Groups: Linear Bushings and Shafts |
| Linear Bushings Catalog | R999000488 | 2015-02-01 | English | PDF | 14.9MB Product Groups: Linear Bushings and Shafts |
| Sistemas de guiado con rodamientos lineales Catalog | R999001254 | 2015-02-01 | Spanish | PDF | 15MB Product Groups: Linear Bushings and Shafts |
| Guide lineari con manicotti a sfere Catalog | R999001253 | 2015-02-01 | Italian | PDF | 15MB Product Groups: Linear Bushings and Shafts |
| Guidages à billes sur arbres Catalog | R999001252 | 2015-02-01 | French | PDF | 15MB Product Groups: Linear Bushings and Shafts |
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