800-999-7378
Bosch Rexorth Linear R205A21420 Size 25 Ball Runner Block
Item Discontinued
Size 25 Ball Runner Block, FNS Normal Design, Steel, Standard Width, 2% Preload (C1), N Accuracy
Item ID | BRL-LT R205A21420 |
Manufacturer Part # | R205A21420 |
AHC Part # | 2300705 Discontinued |
Unit Size | 1 |
Brand | Bosch Rexroth |
Features
- Integrated all-round sealing by means of end seals and four longitudinal seals
- Ball runner blocks are pre-lubricated at the factory.
- Improved travel accuracy
- High degree of system rigidity and accuracy, optionally available with zero-clearance pre-tensioning
- High torque capacity and torsional moment compared to an X-array
- The same high load ratings in all four main directions of loading
- 4-rows of profiled guide rails in O-arrangement Low amount of friction due to 2-point rolling contact
- A market-oriented product portfolio and the interchangeability of ball guide rails and ball runner blocks allow deliveries to be made on time from stock.
- Ball guide rails can be ordered in factory lengths and shortened to the desired length without costly end machining, also at the customer's location.
Tech Specifications
| Height of runner block | 30 mm |
| Size B1 (linear bushing) | 57.8 mm |
| Size E1 | 57 mm |
| Footnote permissible ambient temperature (min ... max) | 100 °C admissible for short time. |
| Size E2 (profiled rail systems) | 45 mm |
| Size H | 36 mm |
| Footnote friction coefficient µ | Friction coefficient µ without seal friction |
| Footnote friction coefficient µ | Friction coefficient µ without seal friction |
| Footnote friction coefficient µ | Friction coefficient µ without seal friction |
| Footnote friction coefficient µ | Friction coefficient µ without seal friction |
| Permissible ambient temperature | -10 °C ... +80 °C |
| Format | FNS - flanged, normal, standard height |
| Friction coefficient µ | 0,002 ... 0,003 |
| Friction coefficient µ | 0,002 ... 0,003 |
| Friction coefficient µ | 0,002 ... 0,003 |
| Friction coefficient µ | 0,002 ... 0,003 |
| Size N1 | 9 mm |
| Pitch T guide rail | 60 mm |
| Height of runner block with guide rail | 36 mm |
| Static load rating C0 | 30600 N |
| Preload class | C1 - Low preload |
| Size B1 (profiled rail systems) | 57.8 mm |
| Size H (profiled rail system) | 36 mm |
| Friction coefficient µ min. | 0.002 |
| Friction coefficient µ min. | 0.002 |
| Friction coefficient µ min. | 0.002 |
| Friction coefficient µ min. | 0.002 |
| Accuracy class | N - Normal |
| Size K4 (profiled rail systems) | 7 mm |
| Size B with tolerance (profiled rail systems) | 86,2 mm +0,5 |
| Size H2 (profiled rail systems) | 20 mm |
| Height of guide rail H2 | 20 mm |
| Size K3 (profiled rail systems) | 7 mm |
| Size A1 (profiled rail systems) | 35 mm |
| Static torsional moment load capacity Mt0 | 380 Nm |
| Dynamic torsional moment load capacity Mt100 | 270 Nm |
| Width of runner block | 70 mm |
| Size E8 (profiled rail systems) | 33 mm |
| Length of runner block | 86.2 mm |
| Static longitudinal moment load capacity ML0 | 310 Nm |
| Size E9 (profiled rail systems) | 13 mm |
| Size N1 (profiled rail systems) | 9 mm |
| Size E1 (profiled rail systems) | 57 mm |
| Size T (profiled rail systems) | 60 mm |
| Size N6 with tolerance (profiled rail systems) | 11,3 mm ±0,5 |
| Dynamic load capacity C50 | 27500 N |
| Dynamic longitudinal moment load capacity ML50 | 280 Nm |
| Size S5 (profiled rail system) | 7 mm |
| Max. acceleration amax | 250 m/s² |
| Dynamic load capacity C100 | 21800 N |
| Dynamic torsional moment load capacity Mt50 | 340 Nm |
| Dynamic longitudinal moment load capacity ML100 | 220 Nm |
| Size A (profiled rail systems) | 70 mm |
| Size A3 (profiled rail systems) | 23.5 mm |
| Size A2 (profiled rail systems) | 23 mm |
| Maximum permissible linear speed vmax | 3 m/s |
| Lubrication | With initial lubrication and preservation |
| Size S1 (profiled rail systems) | 6.7 mm |
| Size N6 (profiled rail systems) | 11.3 mm |
| Friction coefficient µ max. | 0.003 |
| Friction coefficient µ max. | 0.003 |
| Friction coefficient µ max. | 0.003 |
| Friction coefficient µ max. | 0.003 |
| Size B (profiled rail systems) | 86.2 mm |
| Seal | SS – Standard seal |
| Size K2 (profiled rail systems) | 12.5 mm |
| Size V1 | 7.5 mm |
| Size K1 (profiled rail systems) | 12.5 mm |
| Permissible ambient temperature (max) | 80 °C |
| Size S9 thread diameter x lead with tolerance (profiled rail systems) | M3x6,5 |
| Size E2 | 45 mm |
| Size S2 (profiled rail systems) | M8 |
| Permissible ambient temperature (min) | -10 °C |
| Footnote amax | If Fcomb?>2.8 • Fpr : amax = 50 m/s2 |
| Size T1 min (profiled rail systems) | 13 mm |
| Size S9 thread diameter x lead with (profiled rail systems) | M3x6,5 |
| Nominal size | 25 |
| Size H1 (profiled rail systems) | 30 |
