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Description
- Heavy-duty roller runner block for heavy machine construction with extremely high load capacity
- Top rigidity in all load directions
- Improved rigidity under lift-off and side loading conditions due to three additional mounting screw holes at the center of the roller runner block
- High torque capacity
- Limitless interchangeability and any number of combination options thanks to uniform roller guide rails in different versions across all roller runner block variants
Features
- Attachments on the roller runner block can be mounted from above and below
- Lube ports on all sides for maximum ease of maintenance
- Minimum lubrication quantities thanks to innovative channel design
- Smooth running thanks to optimized roller recirculation and guidance
- Optimized entry-section geometry and high number of rollers per track minimizes variation in elastic deflection
- Aluminum end caps (size 125) and/or plastic (size 100)
- End seals integrated as standard for better sealing of all raceways and to protect plastic parts
- Corrosion-resistant heavy-duty roller runner blocks and roller guide rails in Resist CR, matt silver finish, hard chrome-plated, available in accuracy class H (preloads C2 and C3).
Product description
Heavy-duty roller runner blocks are particularly suitable for heavy machine construction with very high carrying capacity- and rigidity requirements.
Steel roller runner block with corrosion-resistant coating "Resist CR", matte silver finish, hard chrome plated
| 1) | Size 125 |
| 2) | Size 45 |
FNS R1861, size 100
Product description high-precision design
Selection of a linear guide acc. to DIN 637
Technical data
Load capacities and load moments
| Size | 100 | 125 | ||
| C | N |  | 461000 | 757200 |
| C0 | N | 811700 | 1324000 | |
| Mt | Nm |  | 26600 | 54520 |
| Mt0 | Nm | 47500 | 95330 | |
| ML | Nm |  | 13550 | 29660 |
| ML0 | Nm | 23850 | 51860 | |
| Determination of the dynamic load ratings and load moments is based on a 100,000 m stroke in accordance with DIN ISO 14728-1. Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt, and ML from the table by 1.23. | |
General technical data
| Size | 100 | 125 | |
| amax 1) | m/s² | 150 | |
| vmax | m/s | 2 | |
| m | kg | 32 | 62.1 |
| FR 2) | N | 400 | 600 |
| μ 3) | 004 ... 01 | ||
| Material | CR | ||
| Operating conditions | |||
| Size | 100 | 125 | |
| Permissible ambient temperature (min ... max) 4) | -10 °C ... +80 °C | ||
| 1) | Prerequisite: There must be preload, even during operation under load. |
| 2) | Guideline value for frictional drags of the complete, sealed and lubricated roller runner blocks. The friction is approx. 50% higher immediately after lubrication. |
| 3) | Without friction of seal |
| 4) | Brief peaks up to 100 °C are permitted. For even lower sub-zero temperatures, please consult us. |
Legend
| Symbol | Description | Unit |
| amax | Maximum acceleration travel | m/s2 |
| C | Dynamic load capacity | N |
| C0 | Static load capacity | N |
| Fpr | Preload force | N |
| FR | Friction force | N |
| m | Mass | kg |
| ML | Dynamic longitudinal moment load capacity | Nm |
| ML0 | Static longitudinal moment load capacity | Nm |
| Mt | Dynamic torsional moment load capacity | Nm |
| Mt0 | Static torsional moment laod capacity | Nm |
| vmax | Maximum permissible speed | m/s |
| μ | Friction coefficient |
General technical data and calculations
Accuracy classes
Definition of preload class
The preload class is the pre-tensioning force Fpr based on the dynamic load rating C of the particular roller runner block.
Selection of the preload class
| Code | Application area |
| C1 | Special version on request |
| C4 | |
| C5 | |
| C2 | For precise guide systems with both high external loading and high demands on overall rigidity;also recommended for single rail systems. |
| Above average moment loads can be absorbed without significant elastic deflection. | |
| Further improved overall rigidity with only medium moment loads. | |
| C3 | For highly rigid guide systems such as precision machine tools, etc. |
| Above average loads and moments can be absorbed with the least possible elastic deflection. | |
| Roller runner blocks with preload C3 available in accuracy classes P, SP (GP) and UP only. |
Recommended combination based on preload and accuracy class
Recommendation for preload C2: Accuracy classes H and P
Recommendation for preload C3: Accuracy classes P, SP, GP and UP
Combination of hard chrome plated Roller Runner Block with hard chrome plated Roller Guide Rails
Upon combination of hard chrome plated Roller Runner Blocks with preload C2 or C3 and hard chrome plated Roller Guide Rails, the preload increases by approx. half a preload class.
Preload force Fpr (N)
| Roller Runner Blocks | Size | 25 | 35 | 45 | 55 | 65 | 100 | 125 | 55/85 | 65/100 | ||
|
| Type | Design type | Preload class | Preload force Fpr (N) | ||||||||
| Roller runner block, steel1) Roller runner block, Resist CR2) | R1851 R1822 R1821 R1861 | FNS SNS SNH | C1 | 830 | 1680 | 2930 | 3860 | 6520 | ‒ | ‒ | ‒ | ‒ |
| C2 | 2240 | 4510 | 7890 | 10400 | 17600 | 36900 | 60600 | ‒ | ‒ | |||
| C3 | 3640 | 7320 | 12800 | 16800 | 28500 | 59900 | 98400 | ‒ | ‒ | |||
| C4 | 4770 | 9610 | 16800 | 22100 | 37400 | ‒ | ‒ | ‒ | ‒ | |||
| C5 | 5610 | 11300 | 19700 | 26000 | 43900 | ‒ | ‒ | ‒ | ‒ | |||
| R1853 R1823 R1824 R1863 | FLS SLS SLH | C1 | 1010 | 2060 | 3640 | 4790 | 8140 | ‒ | ‒ | ‒ | ‒ | |
| C2 | 2720 | 5540 | 9790 | 12900 | 21900 | 50600 | 81600 | ‒ | ‒ | |||
| C3 | 4420 | 8990 | 15900 | 20900 | 35500 | 82200 | 132600 | ‒ | ‒ | |||
| C4 | 5800 | 11800 | 20800 | 27400 | 46600 | ‒ | ‒ | ‒ | ‒ | |||
| C5 | 6810 | 13900 | 24500 | 32200 | 54700 | ‒ | ‒ | ‒ | ‒ | |||
| R1854 | FXS | C2 | ‒ | ‒ | ‒ | ‒ | 29300 | ‒ | ‒ | ‒ | ‒ | |
| C3 | ‒ | ‒ | ‒ | ‒ | 47700 | ‒ | ‒ | ‒ | ‒ | |||
| 1) | All steel parts made of carbon steel |
| 2) | Steel roller runner block body with corrosion-resistant coating, matt silver finish, hard chrome-plated |
Diagrams/characteristic curves
Rigidity of roller rail system for preload C3
Heavy-duty roller runner block FNS R1861
Roller runner block mounted with 9 screws:
Externally with 6 screws of strength class 12.9
In the middle with 3 screws of strength class 8.8
Preload class
C3 = Preload (in accordance with table for pre-tensioning force Fpr in section "Technical information")
Down load
| 1) | δel. = elastic deformation μm |
| 2) | F = load N |
lift-off load
| 1) | δel. = elastic deformation μm |
| 2) | F = load N |
side load
| 1) | δel. = elastic deformation μm |
| 2) | F = load N |
Dimensions
| a) | For O-ring Ø 15 • 2.5 (mm) |
| For lube port from above: | |
| - size 100: Open lube port (see section entitled "Lubrication"). | |
| - size 125: Remove screw plug. | |
| b) | Lube nipple, thread M8x1: |
| Connection possible on all sides. | |
| All lube ports of size 125 in metal. | |
| c) | Side lube ports on two sides, in end caps only with size 100. |
Note
For short stroke (< 2xB1), use additional lube ports (size 125: B4 and N7). All lube ports with thread M8x1 (size 125 in metal).
Dimensions
| Size | 100 | 125 | |
| A | mm | 250 | 320 |
| A1 | mm | 125 | 160 |
| A2 | mm | 100 | 125 |
| A3 | mm | 75 | 97.5 |
| B | mm | 296.5 | 371 |
| B1 | mm | 204 | 255 |
| B2 | mm | 301.5 | 377 |
| B3 | mm | 309.5 | 386.5 |
| B4 | mm | - | 130 |
| E1 | mm | 200 | 270 |
| E2 | mm | 150 | 205 |
| E8 | mm | 64 | 80 |
| E8.2 | mm | 130 | 205 |
| E8.3 | mm | 162.6 | 205 |
| E9 | mm | 9 | 12 |
| E9.2 | mm | 29.4 | 40 |
| E9.3 | mm | 70 | 92 |
| H | mm | 120 | 160 |
| H1 | mm | 105 | 135.5 |
| Dimension H2 with cover strip | mm | 87.3 | 115.3 |
| K1 | mm | 44 | 50 |
| K2 | mm | 49.9 | 50 |
| N1 | mm | 30 | 45 |
| N2 | mm | 22 | 29 |
| N5 | mm | 17.5 | 29 |
| N6 | 55 mm +0.5 | 74.5 mm +0.5 | |
| N7 | mm | - | 92 |
| ØS1 | mm | 17,5 | 25 |
| S2 | M20 | M27 | |
| ØS5 | mm | 25 | 33 |
| T 1) | mm | 105 | 120 |
| V1 | mm | 20 | 25 |
| 1) | Dimension T = Division of the Roller Guide Rail |
Project planning information
Effect of "Resist CR" coating on tolerances and preload
Differing tolerances for "Resist CR” coating
For Roller Runner Blocks and Roller Guide Rails in Resist CR, hard chrome-plated, be aware of differing tolerances with dimensions H and A3 (see "Accuracy classes and their tolerances")!
Higher preload upon combination of hard chrome-plated Roller Runner Blocks and hard chrome-plated Roller Guide Rails
When hard chrome-plated Roller Runner Blocks are combined with hard chrome-plated Roller Guide Rails, this increases the preload by approx. half a preload class.
Mounting
load errorMaintenance
load errorCertification
load errorSafety Instructions
load errorDownloads
 | Profiled rail systems Manual | R320103885_EN | 2016-09-01 | English | PDF | 11.5MB Product Groups: Linear guides |
| Catalog Roller Rail Systems Catalog | R999000354 | 2021-10-01 | English | PDF | 23.5MB Product Groups: Roller Rail Systems only available as PDF file |
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