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BOSCH REXROTH
R044259400


$147.95 USD
  • BOSCH REXROTH
  • Material:R044259400
  • Model:MWA-015-SNS-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 (R044259400) is a high-precision miniature ball runner block designed for seamless motion and high load-bearing applications. This model, part of the Miniature Ball Rail System, boasts a slimline width, normal length, and standard height (SNS format), making it an ideal choice for compact installations where space conservation is crucial. The runner block body is constructed from corrosion-inert steel, ensuring durability and resistance to harsh environments. This MINI R.BLOCK NRII model comes with preload class C, indicating it is preload-free for smooth operation without the need for initial tensioning. It features an accuracy class N, signifying standard precision in alignment and movement. Notably absent are ball chains; however, the unit includes initial lubrication though without preservation. The roller bearing grease Dynalub enhances the longevity and performance of the runner block. The overall length of this runner block measures in at a compact size that complements its miniature stature perfectly. One of its standout features is interchangeability; it can be combined with guide rails of every accuracy class (P, H, and N), providing flexibility in system design and application. Furthermore, the design ensures smooth and quiet running due to an optimally designed ball return and guideway. With integrated lube nipples and a body in standard version configuration, maintenance is straightforward. The dynamic load capacity C and static load rating C are calculated according to DIN standards, ensuring reliable performance under various loads. The permissible ambient temperature range allows operation within -20°C to 80°C limits. Lastly, this model's self-aligning capability allows compensation for misalignment during installation or operation without requiring additional components for alignment correction. With these features combined into a single product offering by Bosch Rexroth's engineering excellence, the MINI R.BLOCK NRII (R044259400) facilitates precise linear motion in various demanding applications while maintaining compactness and reliability.


Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free

The miniature version of the ball runner block is characterized by the following product features:
Size 15
Format SNS: Width = slimline, length = normal, 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)
Lube nipple integrated
Runner block body in standard version
Overall length of the runner block = 46 mm
Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.

Unpacked Weight: 0.072 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 block12
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 N5 (profiled rail systems)2.1
Size A (profiled rail systems)32
Size A3 (profiled rail systems)8.5
Preload force0
FormatSNS - slimline, normal, standard height
Size A2 (profiled rail systems)15
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)4
Footnote static load capacity C0Calculated values acc. to DIN 636, part 2
Pitch T guide rail40
Size K (profiled rail systems)4
Height of runner block with guide rail16
Static load rating C06260
Dynamic torsional moment load capacity Mt31.2
Size B2 (profiled rail systems)46
Size B (profiled rail systems)43
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)
SealN and longitudinal seal
Size B127.2
Size H (profiled rail system)16
Size V14.7
Productgroup ID17
Accuracy classN - Normal
Size B with tolerance (profiled rail systems)43 mm
Dynamic longitudinal moment load capacity ML footnoteCalculated values (derived from C, C0)
Permissible ambient temperature (max)+80
Dynamic longitudinal moment load capacity ML18.3
Size S2 (profiled rail systems)M3
Permissible ambient temperature (min)-10
Static torsional moment load capacity Mt046.3
Note: Max. acceleration amaxOnly with preloaded systems. For non-preloaded systems: amax = 50 m/s2
Runner block or guide railRunner block
Width of runner block32
Size T1 min (profiled rail systems)6
Dynamic torsional moment load capacity Mt footnoteCalculated values (derived from C, C0)
Length of runner block43
Linear guide typeMiniature ball rail system
Dynamic load capacity C4200
Static longitudinal moment load capacity ML027
Size E1 (profiled rail systems)25
Internal product informationFor low-friction seal (Mini) without longitudinal seal
Size H1 with longitudinal seal (profiled rail systems)12.65
Weight0.072
Nominal size15
VersionBall rail system
Size H1 (profiled rail systems)12

Load capacities and load moments

Size

7 9/M3 12 15 20

C 1)

N

technical illustration-R044259400-Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free 860 1180 2310 4200 7900

C0 1)

N

1400 2100 3470 6260 12230

Mt 2)

Nm

technical illustration-R044259400-Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free 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

technical illustration-R044259400-Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free 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

technical illustration-R044259400-Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free

lift-off load

technical illustration-R044259400-Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free

Down load

technical illustration-R044259400-Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free
technical illustration-R044259400-Miniature ball runner block, SNS, size 15, Resist NRII, accuracy standard, preload-free
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

General technical data and calculation

General mounting instructions

Start-up and maintenance

The runner blocks are delivered on a mounting aid.