Артикул: RX8807
General technical notes and information Roller Rail Systems
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Description
- Uniform roller guide rails with and without cover strips allow limitless interchangeability across all roller runner block variants.
- Lube ports on all sides for maximum ease of maintenance
- Minimum lubrication quantities thanks to innovative channel design
- Quiet running thanks to optimally designed roller return and guidance
- Maximum rigidity under load from all directions through two additional mounting screw holes at the center of the roller runner block
Product description
Components and their materials
| Position | Component | Roller Runner Blocks | Roller Guide Rails | ||
|
|
| Steel | Resist CR | Steel | Resist CR |
| 1 | Roller runner block body | Heat-treated steel | Heat-treated steel, chrome-plated | ||
| 2 | Return channel | Plastic | Plastic | ||
| 3 | Cylindrical rollers | Antifriction bearing steel | Antifriction bearing steel | ||
| 4 | Recirculation plate | Plastic | Plastic | ||
| 5 | Recirculating piece | Plastic | Plastic | ||
| 6 | Roller guidance | Plastic | Plastic | ||
| 7 | Screw plug | Carbon steel | Carbon steel | ||
| 8 | Set screw | Corrosion-resistant steel | Corrosion-resistant steel | ||
| 9 | Sealing plate | Plastic | Plastic | ||
| 10 | Threaded plate | Corrosion-resistant steel | Corrosion-resistant steel | ||
| 11 | XXXXX | Corrosion-resistant steel | Corrosion-resistant steel | ||
| 12 | Hex screws | Carbon steel | Carbon steel | ||
| 13 | Lupe nipple | Carbon steel | Carbon steel | ||
| 14 | Roller guide rail | Heat-treated steel | Heat-treated steel, chrome-plated | ||
| 15 | Protective end cap | Plastic | Plastic | ||
| 16 | Screw/washer | Corrosion-resistant steel | Corrosion-resistant steel | ||
Roller Runner Block formats
| Criterion | Description | Codes (example) | ||
|
|
| F | N | S |
| Width | Flange | F | ||
| Narrow | S | |||
| Length | Normal | N | ||
| Long | L | |||
| ExExtralong | X | |||
| Height | Standard height | S | ||
| High | H | |||
| 1) | Format with flange: Design for mounting from above and below |
| 2) | Narrow and wide format: Design for mounting from above |
Roller runner block formats
| FNS - flanged, normal, standard height | FLS - flanged, long, standard height | SNS - slimline, normal, standard height | SLS - slimline, long, standard height |
 |  |  |  |
| SNH - slimline, normal, high | SLH - slimline, long, high | FXS - flanged, extralong, standard height | |
 |  |  |
Optimum design of roller guide – heavy-duty roller runner block
Quiet running thanks to optimally designed roller return and guidance
Roller Guide Rail formats
| Criterion | Description | Codes (example) | ||
|
|
| S | N | S |
| Width | Narrow | S | ||
| Length | Normal | N | ||
| Height | Standard height | S | ||
| Without groove | O | |||
Application example
Corrosion protection is optional
Corrosion-resistant Roller Runner Blocks and Roller Guide Rails in Resist CR, hard chrome plated, available in accuracy class H and in accuracy classes P and SP on request.
Gaskets
The sealing plate on the front side (1) protects the interior of the Ball Runner Block against dirt, chips and fluids. Additionally, it prevents the discharge of lubricant. Due to the optimized form of the sealing lips, the occurring friction is reduced to a minimum. Sealing plates are optionally available with black standard sealings (SS) or green double-lip gaskets (DS).
| 1) | Sealing plate |
Double-lip gasket DS (gasket with very good sealing effect)
For applications in which the rail system is heavily charged with chips, wood dust, cooling lubricants etc., Rexroth recommends the double-lip gasket. It comprises an excellent wiping action but a greater friction force and lower relubrication interval.
In preparation:
Standard seal SS (universal sealing with good sealing effect)
For most application cases, the standard seal is suitable. It comprises of a good wiping action but also enables long relubrication intervals.
| 1) | less preload |
| 2) | more preload |
Sealing effect and displacement resistance
The displacement resistance can be impacted by the geometry and the material. The diagram shows the effects of different sealing versions on the sealing effect and the displacement resistance.
Longitudinal seal
- Area of use: Installation positions, horizontal over-head and wall installation
- Advantage: Early failure of the Runner Block is avoided
- Sealing lip above the complete Runner Block length (including fins for the front-side sealing)
- Sealing lip with sharp edges for optimizing the friction
- Upright, pre-tensioned sealing lip for a targeted deflection of dirt away from the sealing edge.
- Fixing via retaining plate (secured with screws)
- Optimum fastener at the Runner Block with 4 screws each
- High level of rigidity and clamping with edged retaining plate
Product description high-precision design
Selection of a linear guide acc. to DIN 637
Technical data
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 |
Mounting
General mounting instructions
Maintenance
Notes on lubrication
Certification
Directives and standards
Safety Instructions
Notes
Downloads
 | 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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