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BOSCH REXROTH
R205A21420


$218.65 USD
  • BOSCH REXROTH
  • Material:R205A21420
  • Model:KWE-025-FNS-C1-N-1

Quantity in stock: 29

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 B.RUNNER BLOCK CS KWE-025-FNS-C1-N-1 (R205A21420) is a high-precision component designed for linear motion applications. This BSCL ball runner block is notable for its size 25 designation, which indicates its compatibility with similarly sized guide rails and systems. It features an FNS format, meaning it is flanged, of normal height, and standard in design. The runner block body is constructed from unalloyed steel CS, ensuring durability and robustness in operation. With a low preload class C and a standard accuracy class N, this runner block is engineered to provide reliable performance with minimal play. The absence of a ball chain simplifies the design while maintaining efficiency. It comes pre-lubricated and preserved to facilitate immediate use upon installation. The B.RUNNER BLOCK has an overall length that accommodates its specific application requirements, and it boasts high load capacity for demanding tasks. It is designed to be mounted from both above and below, offering flexibility in integration into various systems. Its height complements the size E specification of the profiled rail systems it's compatible with. This Bosch Rexroth runner block can be interchangeably combined with guide rails of every accuracy level, enhancing its versatility across different setups. The permissible ambient temperature range ensures that it can operate effectively within varied environmental conditions without compromising performance. Key specifications include a static load rating C0 that indicates its ability to withstand substantial forces without deformation or failure. Its dynamic load capacity C reflects the maximum load that can be carried while in motion without impacting lifespan or functionality. Overall, the B.RUNNER BLOCK CS KWE-025-FNS-C1-N-1 (R205A21420) is an integral component for linear motion systems requiring precision, flexibility in mounting options, high load capacities, and dependable operation across diverse operational environments.


BSCL ball runner block, FNS, size 25, steel CS, accuracy standard, low preload

The BSCL ball runner block is precise and characterized by the following product features:
Size 25
Format FNS - flanged, normal, standard height
Runner block body made of unalloyed steel CS
Preload class C1: Low preload
Accuracy class N: Standard
Without ball chain
With initial lubrication and preservation
Runner block body in standard version
Overall length of the runner block = 86.2 mm
Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.

Unpacked Weight: 0.600 kg
Area of application: For normal rigidity requirements
Load capacity: High
For mounting from above and below
Height of runner block30
Size E157
Footnote permissible ambient temperature (min ... max)100 °C admissible for short time.
Footnote friction coefficient μFriction coefficient µ without seal friction
Permissible ambient temperature-10 °C ... +80 °C
FormatFNS - flanged, normal, standard height
Ball chainWithout ball chain (standard)
Friction coefficient μ0,002 ... 0,003
Size B tolerance (profiled rail systems)+0.5
Size N19
Pitch T guide rail60
Height of runner block with guide rail36
Static load rating C030600
Preload classC1 - Low preload
Size B157.8
Size H (profiled rail system)36
Friction coefficient μ min.0.002
Accuracy classN - Normal
Size K4 (profiled rail systems)7
Size B with tolerance (profiled rail systems)86,2 mm +0,5
Size H2 (profiled rail systems)20
Height of guide rail H220
Size K3 (profiled rail systems)7
Size A223
Size S16.7
Static torsional moment load capacity Mt0380
Dynamic torsional moment load capacity Mt100270
Width of runner block70
Size A135
Size E8 (profiled rail systems)33
Length of runner block86.2
Dynamic load capacity C21800
Static longitudinal moment load capacity ML0310
Size E9 (profiled rail systems)13
Size N1 (profiled rail systems)9
Size T (profiled rail systems)60
Size N6 with tolerance (profiled rail systems)11,3 mm ±0,5
Dynamic load capacity C5027500
Dynamic longitudinal moment load capacity ML50280
Size S5 (profiled rail system)7
Max. acceleration amax250
Dynamic load capacity C10021800
Dynamic torsional moment load capacity Mt50340
Dynamic longitudinal moment load capacity ML100220
Size A (profiled rail systems)70
Size N6 tolerance (profiled rail systems)±0.5
Size A3 (profiled rail systems)23.5
Preload force350
Maximum permissible linear speed vmax3
LubricationWith initial lubrication and preservation
Size S1 (profiled rail systems)6.7
Size N6 (profiled rail systems)11.3
Friction coefficient μ max.0.003
Size B (profiled rail systems)86.2
SealSS – standard seal
Size K2 (profiled rail systems)12.5
Size V17.5
Productgroup ID17
Size K1 (profiled rail systems)12.5
Permissible ambient temperature (max)+80
Size S9 thread diameter x lead with tolerance (profiled rail systems)M3x6,5
Size E245
Size S2 (profiled rail systems)M8
Permissible ambient temperature (min)-10
Note: Max. acceleration amaxIf Fcomb◡> 2.8 • Fpr : amax = 50 m/s2
Size T1 min (profiled rail systems)13
Size S9 thread diameter x lead with (profiled rail systems)M3x6,5
Weight0.600
Size H130
Nominal size25
VersionBall rail system
Size H1 (profiled rail systems)30