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Description
- Designed especially for general requirements
- Separate wiper seals optional
- Hardened segmental load bearing plates
- Balls made of rolling bearing steel
- Ball retainer and retaining rings made of PA 11
Technical data
General technical data
| Ø d | mm | 12 | 16 | 20 | 25 | 30 | 40 |
| amax | m/s² | 150 | |||||
| vmax | m/s | 3 | |||||
| m | kg | 0.013 | 0.02 | 0.031 | 0.057 | 0.096 | 0.17 |
| FR 1) | N | 1.5 | 2 | 2.5 | 3 | 4 | 5 |
| Breakaway force | N | 3 | 4.5 | 5 | 7 | 9 | 12 |
| μ 2) | 01 ... 04 | ||||||
| Rows of balls | 5 | 6 | |||||
| Shaft radial clearance h6/bore H7 | µm | + 32 0 | + 33 - 1 | + 36 0 | + 42 - 1 | ||
| Shaft radial clearance h6/bore K7 | µm | + 17 - 15 | + 18 - 16 | + 18 - 18 | + 21 - 22 | ||
| Operating conditions | |||||||
| Permissible ambient temperature (min ... max) | -10 °C ... +80 °C | ||||||
| 1) | Frictional drags generated by Linear Bushings with seals on both ends when not under radial load. This depends on speed and lubrication. |
| 2) | 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 |
| Cmin | N | 480 | 720 | 1020 | 1630 | 2390 | 3870 |
| Cmax | N | 570 | 860 | 1080 | 1730 | 2530 | 4100 |
| C0min | N | 420 | 620 | 870 | 1360 | 1960 | 3270 |
| C0max | N | 620 | 910 | 1120 | 1750 | 2510 | 4180 |
| 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 |
Effect of load direction on load rating
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 a short stroke, the service life of the shaft is less than that of the segmental Linear Bushing. The load ratings C specified in the tables must therefore be multiplied by the factor f.s .
Definition of dynamic load ratings
Dimensions
Dimensions
| Ød | mm | 12 | 16 | 20 | 25 | 30 | 40 | |
| D | mm | 20 | 25 | 30 | 37 | 44 | 56 | |
| C | js14 | mm | 24 | 28 | 30 | 37 | 44 | 56 |
Project planning information
Selection guide for operation under difficult conditions
For constantly humid or damp conditions caused, for instance, by water-based coolants/lubricants, we recommend the stainless steel Linear Bushing with parts made of steel in accordance with ISO 683-17 / EN 10088.
Life expectancy calculation
Mounting
Installation
Install the segmental Linear Bushings using an arbor press (see General Installation Instructions). In order to prevent contamination in the segmental Linear Bushing, we recommend making sure that a segmental load bearing plate is covered by the slot when installing in slotted receivers.
Fixation
a) Secured with wiper seal
b) Secured with metal case
General mounting instructions
Commissioning
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.
Maintenance
Lubrication
Accessories
Wiper seals for Segmental Linear Bushings
Wiper seals for Segmental Linear Bushings
- Metal case
- Elastomer wiper seal
- For axial securement.
Metal cases for Segmental Linear Bushings
Metal cases for Segmental Linear Bushings
- Normal (galvanized)
- For axial securement.
Certification
load errorSafety Instructions
Notes
Downloads
 | Linear Bushings and Shafts Manual | R320103669 | 2005-07-01 | English, French, German, Italian | PDF | 3.6MB Product Groups: Linear Bushings and Shafts |
| Linear Bushings Catalog | R999000488 | 2015-02-01 | English | PDF | 14.9MB Product Groups: Linear Bushings and Shafts |
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