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BOSCH REXROTH
R044429401


$139.55 USD
  • BOSCH REXROTH
  • Material:R044429401
  • Model:MWA-012-SLS-C0-N-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 (R044429401) is a state-of-the-art miniature ball runner block designed for high-precision linear motion applications. This model, part of the Miniature Ball Rail System, is notable for its slimline width, long length, and standard height, providing a compact footprint without sacrificing performance. The runner block body is constructed from corrosion-resistant steel, ensuring longevity and reliability in diverse operating conditions. This MINI R.BLOCK NRII features a preload class C, meaning it operates preload-free for smooth movement with minimal friction. It comes with an accuracy class N for standard precision requirements and does not include a ball chain to allow for easy replacement and maintenance. Initial lubrication is applied to the unit; however, it does not come preserved for long-term storage. The product's dimensions include an overall runner block length of . mm and a height that complements the system's profiled rail sizes A, B, E, H, S, T, V, and N. The dynamic load capacity C and static load capacity C0 are calculated according to DIN standards part 5. The MINI R.BLOCK NRII can withstand ambient temperatures ranging from - to + degrees Celsius over short periods. Additional features include relubrication openings for maintenance ease and an absence of attachment elements on both left and right front reference edges. The unit can achieve maximum permissible linear speeds up to m/s under pretensioned systems but should be noted that service life may be limited by wear on plastic parts at such speeds. Designed without self-alignment features, this miniature ball runner block compensates for misalignments within the system itself. It has impressive static and dynamic torsional moment load capacities (Mt), ensuring stability under various loading conditions. In summary, the Bosch Rexroth MINI R.BLOCK NRII (R044429401) offers precise linear motion capabilities in a compact form factor suitable for various applications requiring high-quality miniature guidance systems.


Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free

The miniature version of the ball runner block is characterized by the following product features:
Size 12
Format SLS: Width = slimline, length = long, height = standard
Runner block body made of corrosion-inert steel
Preload class C0: Preload-free
Accuracy class N: Standard
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 = 47.5 mm
Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.

Unpacked Weight: 0.0634 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 block10
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)20
Max. acceleration amax250
Permissible ambient temperature-10 °C ... +80 °C
Size A (profiled rail systems)27
Size A3 (profiled rail systems)7.5
Preload force0
FormatSLS - slimline, long, standard height
Size A2 (profiled rail systems)12
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)3.5
Footnote static load capacity C0Calculated values acc. to DIN 636, part 2
Pitch T guide rail25
Height of runner block with guide rail13
Static load rating C05630
Dynamic torsional moment load capacity Mt19.3
Size B (profiled rail systems)47.5
Note: Maximum permissible speed vmaxSpeeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts.
Preload classC0 – Without preload (clearance)
Static longitudinal moment load capacity ML0 footnoteCalculated values (derived from C, C0)
SealLow-friction seal (mini)
Size B1 (profiled rail systems)34.5
Size H (profiled rail system)13
Size V13.3
Productgroup ID17
Accuracy classN - normal
Size B with tolerance (profiled rail systems)47,5 mm
Dynamic longitudinal moment load capacity ML footnoteCalculated values (derived from C, C0)
Permissible ambient temperature (max)+80
Dynamic longitudinal moment load capacity ML16.8
Size S2 (profiled rail systems)M3
Permissible ambient temperature (min)-10
Static torsional moment load capacity Mt033.5
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 block27
Size T1 min (profiled rail systems)6
Dynamic torsional moment load capacity Mt footnoteCalculated values (derived from C, C0)
Length of runner block47.5
Linear guide typeMiniature ball rail system
Dynamic load capacity C3240
Static longitudinal moment load capacity ML029.2
Size E1 (profiled rail systems)20
Internal product informationFor low-friction seal (Mini) without longitudinal seal
Size H1 with longitudinal seal (profiled rail systems)10.65
Weight0.0634
Nominal size12
Size H1 (profiled rail systems)10

Load capacities and load moments

Size

7 9/M3 12 15

C 1)

N

technical illustration-R044429401-Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free 1220 1570 3240 5940

C0 1)

N

2340 3150 5630 10170

Mt 2)

Nm

technical illustration-R044429401-Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free 4.5 7.2 19.3 44

Mt0 2)

Nm

8.5 14.5 33.5 75.3

ML 2)

Nm

technical illustration-R044429401-Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free 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-R044429401-Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free
1) δel. = elastic deflection μm
2) F = load N

lift-off load

technical illustration-R044429401-Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free

Down load

technical illustration-R044429401-Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free
technical illustration-R044429401-Miniature ball runner block, SLS, size 12, Resist NRII, speed standard, preload-free
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.