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Description
- All metal parts are made from corrosion-resistant steel
- All plastic parts are made from certified materials
- Excellent dynamic characteristics
- The same high load ratings in all four main directions of loading
- Can be used on all SNS Ball Guide Rails
Features
- Long-term lubrication is possible over several years
- Lube fittings with metal threads on all sides
- Limitless interchangeability as all Ball Rail Systems can be combined at will with all Ball Runner Block versions within each accuracy class.
- Maximum system rigidity due to pre-tensioned O-arrangement
- End-face fastening thread for all attachments
- High rigidity in all load directions – permits applications with just one runner block per rail
- Integrated all-around sealing
- Optimized entry-zone geometry and high number of balls minimize variation in elastic deflection
- Smooth, quiet running thanks to optimally designed ball return and guidance
- Attachments on the Ball Runner Block can be mounted from above
Product description
Material specifications
Technical data
Load capacities and load moments
| Size | 15 | 20 | 25 | 30 | 35 | ||
| C | N |  | 8500 | 16000 | 20000 | 26300 | 36500 |
| C0 | N | 14000 | 24400 | 31600 | 40100 | 56200 | |
| Mt | Nm |  | 82 | 265 | 365 | 590 | 1025 |
| Mt0 | Nm | 132 | 310 | 450 | 695 | 1210 | |
| ML | Nm |  | 64 | 190 | 290 | 420 | 710 |
| ML0 | Nm | 104 | 230 | 350 | 495 | 840 | |
| The calculation of the dynamic load ratings and load moments is based on a stroke length of 100,000 m as per DIN ISO 14728-1. However, often only 50,000 m is actually stipulated. For comparison: Multiply the values C,Mt and ML from the table by 1.26. |
General technical data
| Size | 15 | 20 | 25 | 30 | 35 | |
| amax 1) | m/s² | 500 | ||||
| vmax | m/s | 5 | ||||
| m | kg | 0.2 | 0.45 | 0.65 | 1.1 | 1.7 |
| Material | NRFG | |||||
| 1) | If Fcomb > 2.8 • Fpr : amax = 50 m/s2 |
Legend
| Symbol | Description | Unit |
| amax | Maximum acceleration travel | m/s2 |
| C | Dynamic load capacity | N |
| C0 | Static load capacity | 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 |
Dimensions
| a) | For O-ring |
| Size 15: Ø 4 · 1.0 (mm) | |
| Sizes 20 - 35: Ø 5 · 1.0 (mm) | |
| Open the lube port if required | |
| b) | Lube nipple, sizes 15 – 20: |
| Funnel-type lube nipple DIN 3405-A M3x5, B2 = 1.6 mm | |
| If you use different lube nipples, observe the screw-in depth of 5 mm! | |
| Lube nipple, sizes 25 - 35: | |
| Hydraulic-type lube nipple DIN 71412-A M6x8, B2 = 9.5 mm | |
| If you use different lube nipples, observe the screw-in depth of 8 mm! | |
| The lube nipple is included in the scope of delivery (not installed). | |
| Connection possible on all sides. |
Dimensions
| Size | 15 | 20 | 25 | 30 | 35 | |
| A | mm | 34 | 44 | 48 | 60 | 70 |
| A1 | mm | 17 | 22 | 24 | 30 | 35 |
| A2 | mm | 15 | 20 | 23 | 28 | 34 |
| A3 | mm | 9.5 | 12 | 12.5 | 16 | 18 |
| B | 72.6 mm | 91 mm | 107.9 mm | 119.7 mm | 139 mm | |
| B1 | mm | 53.6 | 65.6 | 79.5 | 89.4 | 105.5 |
| E1 | mm | 26 | 32 | 35 | 40 | 50 |
| E2 | mm | 26 | 50 | 60 | 72 | |
| E8 | mm | 24.55 | 32.5 | 38.3 | 48.4 | 58 |
| E9 | mm | 6.7 | 7.3 | 11.5 | 14.6 | 17.35 |
| H | mm | 24 | 30 | 36 | 42 | 48 |
| H1 | mm | 19.9 | 25.35 | 29.9 | 35.35 | 40.4 |
| Dimension H2 with cover strip | mm | 16.3 | 20.75 | 24.45 | 28.55 | 32.15 |
| Dimension H2 without cover strip | mm | 16.2 | 20.55 | 24.25 | 28.35 | 31.85 |
| K1 | mm | 17.2 | 14.8 | 20.8 | 21 | 23.75 |
| K2 | mm | 18.8 | 14.8 | 21.95 | 22.7 | 25.25 |
| K3 | mm | 3.2 | 3.35 | 5.5 | 6.05 | 6.9 |
| K4 | mm | 3.2 | 3.35 | 5.5 | 6.05 | 6.9 |
| N3 | mm | 6 | 7.5 | 9 | 12 | 13 |
| N6 | 10.3 mm ±0.5 | 13.2 mm ±0.5 | 15.2 mm ±0.5 | 17 mm ±0.5 | 20.5 mm ±0.5 | |
| S2 | M4 | M5 | M6 | M8 | ||
| ØS5 | mm | 4.5 | 6 | 7 | 9 | |
| S9 | M2.5x3.5 | M3x5 | ||||
| T | mm | 60 | 80 | |||
| V1 | mm | 5 | 6 | 7.5 | 7 | 8 |
Project planning information
Combinations of different accuracy classes
Combining Ball Guide Rails and Ball Runner Blocks of different accuracy classes results in different tolerances for the dimensions H and A3. See "Accuracy classes and their tolerances” in the Ball Rail Systems
Hygienic design
Product requirements for specific areas
Notes on using the Ball Rail Systems NRFG
Maintenance
Lubrication
Cleaning
Information
load errorCertification
load errorSafety Instructions
load errorDownloads
 | Ball Rail Systems NRFG Catalog | R310EN2226 | 2011-04-01 | English | PDF | 1.9MB Product Groups: Ball Rail Systems |
| Profiled rail systems Manual | R320103885_EN | 2016-09-01 | English | PDF | 11.5MB Product Groups: Linear guides |
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