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BOSCH REXROTH
R044121201


$228.08 USD
  • BOSCH REXROTH
  • Material:R044121201
  • Model:MWA-012-BLS-C1-P-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 (R044121201) is a miniature ball runner block designed for precision linear movement applications. This model features a BLS format, indicating a width of 12mm, with a length and height that adhere to standard dimensions for compactness and compatibility. The runner block body is crafted from corrosion-resistant steel, ensuring durability and resistance to environmental factors. With a low preload class C and an accuracy class P, this ball runner block offers precision movement with minimal play, making it suitable for applications requiring high accuracy. It is equipped with relubrication openings for maintenance ease and prolonging service life but comes without an attachment element on either the left or right front reference edge. The MINI R.BLOCK NRII does not include a ball chain, instead featuring ball retention capabilities which facilitate easy replacement when necessary. It is pre-lubricated with Roller bearing grease Dynalub 510 for immediate operation upon installation but does not have any preservation treatment applied. This model's overall length is measured at 39.5 mm, and it can be interchangeably combined with guide rails of every accuracy class (P, H, and N), enhancing its versatility in various configurations. The block's smooth running is attributed to its optimally designed ball return and guideway system. Designed to withstand dynamic load capacities as per DIN standards, the MINI R.BLOCK NRII can also handle static load capacities efficiently. Its permissible ambient temperature range extends from -10°C to +100°C, allowing it to operate in diverse environments while maintaining performance integrity. In summary, the Bosch Rexroth MINI R.BLOCK NRII (R044121201) provides precise linear guidance with low preload in compact form factor settings where corrosion resistance and maintenance accessibility are essential requirements.


Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload

The miniature version of the ball runner block is characterized by the following product features:
Size 12
Format BLS: Width = wide, length = long, 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)
With relubrication openings
Runner block body in standard version
Overall length of the runner block = 59.5 mm
Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.

Unpacked Weight: 0.113 kg

technical illustration-R044121201-Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload
1) Sizes 9/M3, 12
2) Size 15
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)28
Max. acceleration amax250
Permissible ambient temperature-10 °C ... +80 °C
Size A (profiled rail systems)40
Size A3 (profiled rail systems)8
Preload force87
FormatBLS - wide, long, standard height
Size A2 (profiled rail systems)24
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 rail25
Height of runner block with guide rail14
Static load rating C08250
Dynamic torsional moment load capacity Mt51.4
Size B (profiled rail systems)59.5
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)45
Size H (profiled rail system)14
Size V13.3
Productgroup ID17
Accuracy classP - Precise
Size B with tolerance (profiled rail systems)59,5 mm
Dynamic longitudinal moment load capacity ML footnoteCalculated values (derived from C, C0)
Permissible ambient temperature (max)+80
Dynamic longitudinal moment load capacity ML28.7
Size S2 (profiled rail systems)M3
Permissible ambient temperature (min)-10
Static torsional moment load capacity Mt097.7
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 block40
Size T1 min (profiled rail systems)6
Dynamic torsional moment load capacity Mt footnoteCalculated values (derived from C, C0)
Length of runner block59.5
Linear guide typeMiniature ball rail system
Dynamic load capacity C4340
Static longitudinal moment load capacity ML054.6
Size E1 (profiled rail systems)28
Internal product informationFor low-friction seal (Mini) without longitudinal seal
Size H1 with longitudinal seal (profiled rail systems)10.65
Weight0.113
Nominal size12
Size H1 (profiled rail systems)10

Load capacities and load moments

Size

9/M3 12 15

C 1)

N

technical illustration-R044121201-Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload 2825 4340 7460

C0 1)

N

5590 8250 14085

Mt 2)

Nm

technical illustration-R044121201-Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload 23.5 51.4 151

Mt0 2)

Nm

46.4 97.7 285.2

ML 2)

Nm

technical illustration-R044121201-Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload 15.8 28.7 66.1

ML0 2)

Nm

31.2 54.6 125
1) Calculated values as per DIN 636, Part 2
2) Calculated values (derived from C, C0)

General technical data

Size

9/M3 12 15

amax 1)

m/s²

250

vmax 2)

m/s

3

m

g

41 76 170

Operating conditions

Size

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

lift-off load

technical illustration-R044121201-Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload

Down load

technical illustration-R044121201-Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload
technical illustration-R044121201-Miniature ball runner block, BLS, size 12, Resist NRII, accuracy precision, low preload
1) Funnel-type lube nipple
2) 4 lubrication holes
3) Size 15
4) Sizes 9/M3, 12

Dimensions

Size

9/M3 12 15

A

mm

30 40 60

A2

mm

18 24 42

A3

mm

6 8 9

B

mm

51 59.5 74.5

B1

mm

38 45 57.6

B2

mm

- 77.5

E1

mm

23 28 45

E2

mm

24 28 35

H

mm

12 14 16

H1 Without longitudinal seal

mm

9 10 12

H1 With longitudinal seal

mm

9.65 10.65 12.65

K

mm

- 4

N3

mm

3.2 4 4.5

N5

mm

- 2.1

S2

mm

M3 M4

V1

mm

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.