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BOSCH REXROTH
R044471301


$132.37 USD
  • BOSCH REXROTH
  • Material:R044471301
  • Model:MWA-007-SLS-C1-H-3

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth MINI R.BLOCK NRII (R044471301) is a high-precision miniature ball runner block designed for linear motion applications that require smooth, quiet operation and high accuracy. This model boasts an SLS format, which stands for slimline width, long length, and standard height, ensuring a compact footprint while providing robust performance. The runner block body is crafted from corrosion-resistant steel to ensure durability and longevity in various environments. Featuring a low preload class C and a high accuracy class H, the MINI R.BLOCK NRII is engineered to deliver precise movement with minimal play. It does not include a ball chain but comes with initial lubrication for immediate use without preservation. The roller bearing grease Dynalub 510 is used for optimal lubrication. The product has relubrication openings for easy maintenance and ensuring long-term reliability. Designed with interchangeability in mind, this runner block can be combined with guide rails of every accuracy class—P, H, and N—providing flexibility in assembly and replacement. It's self-aligning to compensate for any misalignments during installation or operation. With its dynamic load capacity calculated according to DIN 636, part 1 standards, the MINI R.BLOCK NRII can handle significant loads while maintaining its performance integrity. The runner block operates within an ambient temperature range of -10°C to +100°C and can withstand short periods outside this range as indicated in the footnote provided. The product's dynamic torsional moment load capacity Mt ensures it can cope with forces applied during rapid changes in motion or direction. Overall dimensions of the runner block are tailored to meet size E profiled rail systems requirements while also being compatible with sizes A, B, H, S, T min profiled rail systems. Its low-friction seal minimizes resistance during movement making it suitable for mini size B profiled rail systems as well as other specified sizes. The MINI R.BLOCK NRII does not come with attachment elements on the left or right front reference edge but offers easy ball retention features facilitating simple replacements when needed.


Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload

The miniature version of the ball runner block is characterized by the following product features:
Size 7
Format SLS: Width = slimline, length = long, height = standard
Runner block body made of corrosion-inert steel
Preload class C1: Low preload
Accuracy class H: High
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)
With relubrication openings
Runner block body in standard version
Overall length of the runner block = 33 mm
Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.

Unpacked Weight: 0.025544 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
Material (profiled rail systems)Corrosion resistant steel
Height of runner block6.5
Footnote permissible ambient temperature (min ... max)100 °C admissible for short time.
Footnote dynamic load capacity CCalculated values acc. to DIN 636, part 2
Size E2 (profiled rail systems)13
Max. acceleration amax250
Permissible ambient temperature-10 °C ... +80 °C
Size A (profiled rail systems)17
Size A3 (profiled rail systems)5
Preload force24
FormatSLS - slimline, long, standard height
Size A2 (profiled rail systems)7
Self-aligning for compensation of misalignmentsWithout self-alignment
Static torsional moment load capacity Mt0 footnoteCalculated values (derived from C, C0)
Maximum permissible linear speed vmax3
LubricationWith initial lubrication and without preservation
Ball chainWithout ball chain (standard)
Size N3 (profiled rail systems)2.5
Footnote static load capacity C0Calculated values acc. to DIN 636, part 2
Pitch T guide rail15
Height of runner block with guide rail8
Static load rating C02340
Dynamic torsional moment load capacity Mt4.5
Size B (profiled rail systems)33
Note: Maximum permissible speed vmaxSpeeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts.
Preload classC1 - Low preload
Static longitudinal moment load capacity ML0 footnoteCalculated values (derived from C, C0)
SealLow-friction seal (mini)
Size B1 (profiled rail systems)24.1
Size H (profiled rail system)8
Size V12
Productgroup ID17
Accuracy classH - Highly accurate
Size B with tolerance (profiled rail systems)33 mm
Dynamic longitudinal moment load capacity ML footnoteCalculated values (derived from C, C0)
Permissible ambient temperature (max)+80
Dynamic longitudinal moment load capacity ML4.3
Size S2 (profiled rail systems)M2
Permissible ambient temperature (min)-10
Static torsional moment load capacity Mt08.5
Note: Max. acceleration amaxOnly with pre-tensioned systems. For non-preloaded systems: amax = 50 m/s2
Runner block or guide railRunner block
Width of runner block17
Size T1 min (profiled rail systems)5
Dynamic torsional moment load capacity Mt footnoteCalculated values (derived from C, C0)
Length of runner block33
Linear guide typeMiniature ball rail system
Dynamic load capacity C1220
Static longitudinal moment load capacity ML08.3
Size E1 (profiled rail systems)12
Internal product informationFor low-friction seal (Mini) without longitudinal seal
Weight0.025544
Nominal size7
Size H1 (profiled rail systems)6.5

Load capacities and load moments

Size

7 9/M3 12 15

C 1)

N

technical illustration-R044471301-Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload 1220 1570 3240 5940

C0 1)

N

2340 3150 5630 10170

Mt 2)

Nm

technical illustration-R044471301-Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload 4.5 7.2 19.3 44

Mt0 2)

Nm

8.5 14.5 33.5 75.3

ML 2)

Nm

technical illustration-R044471301-Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload 4.3 7 16.8 39.2

ML0 2)

Nm

8.3 14 29.2 67.1
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

amax 1)

m/s²

250

vmax 2)

m/s

3

m

g

14 26 51 94

Operating conditions

Size

7 9/M3 12 15

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

technical illustration-R044471301-Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload
1) δel. = elastic deflection μm
2) F = load N

lift-off load

technical illustration-R044471301-Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload

Down load

technical illustration-R044471301-Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload
technical illustration-R044471301-Miniature ball runner block, SLS, size 7, Resist NRII, accuracy high, low preload
1) 4 lubrication holes
2) Sizes 7, 9/M3, 12
3) Funnel-type lube nipple
4) Size 15

Dimensions

Size

7 9/M3 12 15

A

mm

17 20 27 32

A2

mm

7 9 12 15

A3

mm

5 5.5 7.5 8.5

B

mm

33 41.4 47.5 60.8

B1

mm

24.1 31.3 34.5 45

B2

mm

- 63.8

E1

mm

12 15 20 25

E2

mm

13 16 20 25

H

mm

8 10 13 16

H1 Without longitudinal seal

mm

6.5 8 10 12

H1 With longitudinal seal

mm

- 8.65 10.65 12.65

K

mm

- 4

N3

mm

2.5 3 3.5 4

N5

mm

- 2.1

S2

mm

M2 M3

V1

mm

2 2.8 3.3 4.7

General technical data and calculation

General mounting instructions

Start-up and maintenance

The runner blocks are delivered on a mounting aid.