BOSCH REXROTH
R044201200
$243.15 USD
- BOSCH REXROTH
- Material:R044201200
- Model:MWA-020-SNS-C1-P-3
Quantity in stock: 0
The Bosch Rexroth MINI R.BLOCK NRII MWA-020-SNS-C1-P-3 (R044201200) is a high-precision miniature ball runner block designed for smooth, quiet running and easy ball replacement. This model features a slimline width, standard height, and normal length format (SNS), with a runner block body made of corrosion-resistant steel. It boasts a low preload class C and precision accuracy class P, ensuring reliable performance in demanding applications. The MINI R.BLOCK NRII does not include a ball chain, but it comes with initial lubrication and is free from preservation treatments. It utilizes roller bearing grease Dynalub for sustained operation. The runner block does not have attachment elements on either the left or right front reference edges but includes an integrated lube nipple. With an overall length specified for this model, the runner block has been designed to be interchangeable with guide rails across every accuracy class—P, H, and N—offering flexibility in assembly and maintenance. It features a relubrication hole for ease of maintenance and is capable of operating within an ambient temperature range of -10°C to 100°C while maintaining its dynamic load capacity as per DIN standards. This product is self-aligning to compensate for any misalignments without the need for additional self-alignment mechanisms. Its static torsional moment load capacity Mt is calculated based on the dynamic load capacity C values. The MINI R.BLOCK NRII can achieve maximum permissible linear speeds up to 5 m/s; however, service life may be limited at these speeds due to increased wear on plastic components. Specifically designed for size A through E profiled rail systems, this miniature ball rail system ensures high reliability in linear motion tasks with its robust construction and precise engineering. The product's nominal size aligns with the size H profiled rail systems specifications, making it suitable for various industrial applications where space constraints and precision are critical factors.
Miniature ball runner block, SNS, size 20, Resist NRII, accuracy precision, low preload
The miniature version of the ball runner block is characterized by the following product features:
Size 20
Format SNS: Width = slimline, length = normal, height = standard
Runner block body made of corrosion-inert steel
Preload class C1: Low preload
Accuracy class P: Precision
Without ball chain
With initial lubrication and without preservation
Roller bearing grease Dynalub 520
Without attachment element, left (front reference edge)
Without attachment element, right (front reference edge)
Lube nipple integrated
Runner block body in standard version
Overall length of the runner block = 69 mm
Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.
Unpacked Weight: 0.261 kg
| Accuracy classes P, H and N |
| Relubrication hole available |
| Smooth, quiet running thanks to optimally designed ball return and guideway |
| Ball retention for easy replacement |
| Data Sheet | Download Data Sheet |
| 2D CAD | Download 2D CAD |
| 2D CAD | Download 2D CAD |
| 3D CAD | Download 3D CAD |
| 3D CAD | Download 3D CAD |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Manual | Download Manual |
| Material (profiled rail systems) | Corrosion resistant steel |
| Height of runner block | 17.5 |
| Footnote permissible ambient temperature (min ... max) | 100 °C admissible for short time. |
| Footnote dynamic load capacity C | Calculated values acc. to DIN 636, part 2 |
| Size E2 (profiled rail systems) | 38 |
| Max. acceleration amax | 250 |
| Permissible ambient temperature | -10 °C ... +80 °C |
| Size N5 (profiled rail systems) | 3.1 |
| Size A (profiled rail systems) | 46 |
| Size A3 (profiled rail systems) | 13 |
| Preload force | 158 |
| Format | SNS - slimline, normal, standard height |
| Size A2 (profiled rail systems) | 20 |
| Self-aligning for compensation of misalignments | Without self-alignment |
| Static torsional moment load capacity Mt0 footnote | Calculated values (derived from C, C0) |
| Maximum permissible linear speed vmax | 3 |
| Lubrication | With initial lubrication and without preservation |
| Ball chain | Without ball chain (standard) |
| Size N3 (profiled rail systems) | 6 |
| Footnote static load capacity C0 | Calculated values acc. to DIN 636, part 2 |
| Pitch T guide rail | 60 |
| Size K (profiled rail systems) | 4 |
| Height of runner block with guide rail | 25 |
| Static load rating C0 | 12230 |
| Dynamic torsional moment load capacity Mt | 81.4 |
| Size B2 (profiled rail systems) | 69 |
| Size B (profiled rail systems) | 66 |
| Note: Maximum permissible speed vmax | Speeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts. |
| Preload class | C1 - Low preload |
| Static longitudinal moment load capacity ML0 footnote | Calculated values (derived from C, C0) |
| Seal | N and longitudinal seal |
| Size B1 (profiled rail systems) | 45.1 |
| Size H (profiled rail system) | 25 |
| Size V1 | 7 |
| Productgroup ID | 17 |
| Accuracy class | P - Precise |
| Size B with tolerance (profiled rail systems) | 66 mm |
| Dynamic longitudinal moment load capacity ML footnote | Calculated values (derived from C, C0) |
| Permissible ambient temperature (max) | |
| Dynamic longitudinal moment load capacity ML | 51.7 |
| Size S2 (profiled rail systems) | M4 |
| Permissible ambient temperature (min) | |
| Static torsional moment load capacity Mt0 | 126 |
| Note: Max. acceleration amax | Only with preloaded systems. For non-preloaded systems: amax = 50 m/s2 |
| Runner block or guide rail | Runner block |
| Width of runner block | 46 |
| Size T1 min (profiled rail systems) | 6.5 |
| Dynamic torsional moment load capacity Mt footnote | Calculated values (derived from C, C0) |
| Length of runner block | 66 |
| Linear guide type | Miniature ball rail system |
| Dynamic load capacity C | 7900 |
| Static longitudinal moment load capacity ML0 | 80 |
| Size E1 (profiled rail systems) | 38 |
| Internal product information | For low-friction seal (Mini) without longitudinal seal |
| Size H1 with longitudinal seal (profiled rail systems) | 18.15 |
| Weight | 0.261 |
| Nominal size | 20 |
| Size H1 (profiled rail systems) | 17.5 |
Load capacities and load moments
|
Size |
7 | 9/M3 | 12 | 15 | 20 | ||
|
C 1) |
N |
|
860 | 1180 | 2310 | 4200 | 7900 |
|
C0 1) |
N |
1400 | 2100 | 3470 | 6260 | 12230 | |
|
Mt 2) |
Nm |
|
3.1 | 5.4 | 13.7 | 31.2 | 81.4 |
|
Mt0 2) |
Nm |
5.1 | 9.6 | 20.6 | 46.3 | 126 | |
|
ML 2) |
Nm |
|
1.9 | 3.6 | 7.9 | 18.3 | 51.7 |
|
ML0 2) |
Nm |
3.2 | 6.4 | 11.8 | 27 | 80 | |
| 1) | Calculated values as per DIN 636, Part 2 |
| 2) | Calculated values (derived from C, C0) |
General technical data
|
Size |
7 | 9/M3 | 12 | 15 | 20 | |
|
amax 1) |
m/s² |
250 | ||||
|
vmax 2) |
m/s |
3 | ||||
|
m |
g |
9 | 16 | 33 | 47 | 177 |
|
Operating conditions |
||||||
|
Size |
7 | 9/M3 | 12 | 15 | 20 | |
|
Permissible ambient temperature (min ... max) 3) |
-10 °C ... +80 °C | |||||
| 1) | Only with pre-tensioned systems. For non-pre-tensioned systems: amax = 50 m/s2 |
| 2) | Speeds of up to 5 m/s are possible. Service life is limited by increased wear to plastic parts. |
| 3) | Brief peaks up to 100°C are permissible. |
Note on dynamic load capacities and moments (see the table)
Determination of the dynamic load ratings and moments is based on a total travel of 100,000 m.
Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.26.
Observe friction of the different seals. See document “Technical data”.
Technical data
Accuracy classes
Legend
|
Symbol |
Description |
Unit |
|
amax |
Maximum acceleration travel |
m/s2 |
|
C |
Dynamic load capacity |
N |
|
C0 |
Static load capacity |
N |
|
m |
Mass |
g |
|
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 |
Rigidity of the miniature ball rail systems at pretension
Mounted runner block with 4 screws, strength class 12.9
lift-off load
Down load
| 1) | 4 lubrication holes |
| 2) | Sizes 7 to 12 |
| 3) | Funnel-type lube nipple |
| 4) | Sizes 15 - 20 |
Dimensions
|
Size |
7 | 9/M3 | 12 | 15 | 20 | |
|
A |
mm |
17 | 20 | 27 | 32 | 46 |
|
A2 |
mm |
7 | 9 | 12 | 15 | 20 |
|
A3 |
mm |
5 | 5.5 | 7.5 | 8.5 | 13 |
|
B |
mm |
24 | 31 | 34.8 | 43 | 66 |
|
B1 |
mm |
14.9 | 20.7 | 21.6 | 27.2 | 45.1 |
|
B2 |
mm |
- | 46 | 69 | ||
|
E1 |
mm |
12 | 15 | 20 | 25 | 38 |
|
E2 |
mm |
8 | 10 | 15 | 20 | 38 |
|
H |
mm |
8 | 10 | 13 | 16 | 25 |
|
H1 Without longitudinal seal |
mm |
6.5 | 8 | 10 | 12 | 17.5 |
|
H1 With longitudinal seal |
mm |
- | 12.65 | 18.15 | ||
|
K |
mm |
- | 4 | |||
|
N3 |
mm |
2.5 | 3 | 3.5 | 4 | 6 |
|
N5 |
mm |
- | 2.1 | 3.1 | ||
|
S2 |
mm |
M2 | M3 | M4 | ||
|
V1 |
mm |
2 | 2.8 | 3.3 | 4.7 | 7 |
The runner blocks are delivered on a mounting aid.