R165189420 KWD-020-FNS-C0-N-1 Bosch Rexroth Ball Runner Block Carriage

The Bosch Rexroth KWD-020-FNS-C0-N-1 is a robust flange-base ball runner block designed for demanding linear motion systems that require strong load capacity, stable mounting, and smooth, reliable operation. Its FNS format (flange width, normal block length, standard height) gives a wider mounting footprint and excellent structural rigidity — ideal for heavier-load or precision industrial applications. This block is size 20, constructed from carbon steel, and supplied pre-lubricated and sealed for long-term performance and minimal maintenance.

Key Features

• FNS format (Flange / Normal length / Standard height) — provides a stable base and strong load distribution for heavier and multi-direction loads. 

• Size 20 — larger than the size-15 variants, offering significantly increased load and rigidity capacity. 

• Carbon steel construction (CS) — ensures high structural strength, durability, and resistance to deformation under heavy loads. 

• Preload class C0 (Preload-free / clearance-type) — provides low-friction, smooth motion when preload is not required. 

• Accuracy class N (Standard precision) — suitable for general automation, CNC, and industrial linear motion systems where consistent repeatability is needed. 

• Standard seal (SS), without ball chain — simplifies installation and maintenance while remaining suitable for many industrial environments. 

• Pre-lubricated and sealed at factory — ready for installation, designed for long-term operation with minimal maintenance intervals. 

• High rigidity and torque/moment load capacity in all directions — suitable for applications where single-block-per-rail setups carry substantial dynamic or static loads. 

Technical Specifications

• Nominal size: 20. 

• Block format: FNS — Flange width, Normal length, Standard height.

• Material: Carbon steel (CS).

• Preload class: C0 (Preload-free / clearance type). 

• Accuracy class: N (Standard precision). 

• Seal type: SS – Standard seal, without ball chain. 

• Approximate block mass: 0.45 kg. 

• Static load capacity (C₀): ≈ 29,800 N. 

• Dynamic load capacity (C): ≈ 23,400 N.

• Maximum permissible linear speed (vₘₐₓ): 5 m/s. 1

• Maximum permissible acceleration (aₘₐₓ): 500 m/s² (under suitable load conditions). 

• Temperature range (ambient): –10 °C to +80 °C (short-term peaks may be permissible depending on lubrication conditions). 

• Mounting configuration: flange-type mounting with four tapped holes for attachments; end-face threading allows mounting attachments above or below the block. 

Typical Applications

The KWD-020-FNS-C0-N-1 is particularly suited for:

• CNC machining centres, milling machines, routing or engraving machines that require heavy-duty, stable linear guidance

• Industrial automation and assembly machinery under significant loads or multi-direction forces

• Robotics, pick-and-place, material-handling, and heavy-load conveyor systems where robust guidance and load capacity are required

• Retrofit or maintenance of existing linear guide installations using size-20 FNS/SNS rails

• General industrial linear motion setups where flange mounting, high rigidity, and dependable long-term operation matter more than preload-induced stiffness

Why Buy from Bearing King Ltd

By purchasing this block through Bearing King Ltd you get:

• 100% genuine Bosch Rexroth components — ensuring compliance with OEM specifications, reliability, and long service life

• Competitive UK-based pricing and prompt delivery aimed at industrial and professional customers

• Expert technical support to assist with matching rails, selecting preload classes, planning mounting and lubrication

• Pre-lubricated, ready-to-install blocks that reduce downtime and minimize maintenance requirements — ideal for both new builds and retrofit projects