R165389420 KWD-020-FLS-C0-N-1 Bosch Rexroth Ball Runner Block Carriage

The Bosch Rexroth KWD-020-FLS-C0-N-1 is a robust, high-performance flange-mount ball runner block designed for demanding linear motion applications requiring rigidity, stability and smooth operation. The FLS configuration (flange width, long block length, standard block height) provides exceptional mounting stability and increased load distribution thanks to the extended block length. Built from durable carbon steel and supplied pre-lubricated, this block is ideal for industrial automation, CNC machinery, robotics and precision positioning systems.

Key Features

• FLS design (Flange / Long length / Standard height) — wide flange base gives excellent mounting stability; long block length improves stiffness and reduces deflection.

• Size 20 — engineered for higher load demands compared to smaller rail sizes.

• Carbon steel construction — maximises strength, reliability and service life under continuous load.

• C0 preload (preload-free) — delivers smooth, low-resistance motion ideal for applications where minimal rolling friction is preferred.

• Accuracy class N — offers dependable, general-purpose precision for a wide range of industrial machinery.

• Standard sealing (SS) — provides reliable protection from dust and typical contaminants.

• Pre-lubricated & sealed — ready to install upon arrival, requiring no initial maintenance.

• High load and torque capacities — suitable for applications with varying force directions and single-block-per-rail usage.

• Compatible with Bosch Rexroth size-20 FLS, FNS and SNS rails.

Technical Specifications

• Nominal size: 20 mm

• Block format: FLS — Flange width, Long block length, Standard height

• Material: Carbon steel

• Preload class: C0 (Preload-free)

• Accuracy class: N (Standard precision)

• Seal type: Standard seal (SS), without ball chain

• Flange width: 63 mm

• Block length: approx. 95 mm

• Block height with rail: 30 mm

• Block weight: approx. 0.50 kg

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

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

• Dynamic torsional moment capacity (Mt): ≈ 300 Nm

• Dynamic longitudinal moment capacity (ML): ≈ 200 Nm

• Static moment capacities (Mt₀ / ML₀): ≈ 300 Nm / 260 Nm

• Maximum permissible speed: 5 m/s

• Maximum permissible acceleration: 500 m/s²

• Lubrication: Factory-filled grease, relubrication possible via lubrication ports

• Operating temperature range: –10°C to +80°C

• Mounting type: Flange-mounted runner block with tapped mounting holes for secure installation

Typical Applications

The KWD-020-FLS-C0-N-1 is ideal for:

• CNC milling, routing and machining equipment requiring strong flange-mounted support

• Industrial automation and assembly machinery with high or multidirectional loads

• Robotics, pick-and-place systems and heavy-duty linear actuators

• Material handling, packaging and high-precision positioning systems

• Replacement or retrofit of existing Bosch Rexroth size-20 flanged runner blocks

Why Buy from Bearing King Ltd

Choosing Bearing King Ltd ensures:

• Guaranteed genuine Bosch Rexroth OEM components

• Competitive UK pricing and fast dispatch

• Engineering support for rail and block selection, preload guidance and technical queries

• Pre-lubricated, ready-to-install blocks that minimise downtime and maximise service life