AirTAC LSH20BK-F1N-N-D-M6 | 20mm Flange Linear Guideway Carriage | Standard N Class

Model: LSH20BK-F1N-N-D-M6

1. Executive Summary

The AirTAC LSH20BK-F1N-N-D-M6 is a 20mm flange-type block from the LSH heavy-duty linear guideway series.

As an extremely common "golden size" in the automation industry, the 20mm specification strikes a perfect balance between load capacity and compact volume. Combined with the F1N (Wide Flange) design, this block provides a broader mounting base for medium-load platforms, significantly enhancing resistance to lateral moment loads. It is an ideal maintenance spare part to replace similar competing products such as the HIWIN HGW20CC.

2. Model Code Decoding

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Please note the following:

• LSH: Series Name — High Assembly Standard Type Linear Guideway.

• 20: Size Specification — Nominal guideway width of 20mm.

  • Characteristic: This is one size smaller than the 25mm specification, suitable for small to medium-sized automation equipment, offering moderate load capacity and a smaller footprint.

• BK: Block Component — Indicates this is a standalone block unit.

• F1: Block Type — Flange Type, Top Mounting.

  • Core Feature: The block has extended flanges (wings) on both sides.

  • Mounting Method: Mounting holes are through-holes, where screws pass from the top of the block and tighten into the worktable above.

• N: Accuracy Grade — N (Normal Grade/Standard Grade), meets general transmission requirements.

• N: Preload Grade — N (Standard Preload/No Preload), ensuring smooth running and extremely low resistance.

• D: Matching/Interchangeability Code — Group D Matching.

  • Designed for interchangeability, ensuring a good fit clearance with your existing (Group D) rail when purchased as a separate accessory.

• M6: Grease Nipple Specification — Standard M6 threaded grease port interface.

3. Core Features

A. 20mm "Golden Specification" (Compact Heavy Duty)

The LSH20 series is one of the most popular specifications in light industrial automation. Compared to the 25mm series, it has a lower profile and lighter weight, yet its load capacity is more than sufficient for most electronic assembly, 3D printing, and small robotic applications.

B. High-Stability Flange Structure (Wide Flange Stability)

The F1 flange design extends the block's effective support width to 63 mm (standard value). Compared to a square block of the same specification (44mm), this significantly improves the lateral stability of the worktable (resistance to rolling moment). This makes it highly suitable for single-axis, single-block, or dual-block application layouts.

C. Four-Direction Equal Load and Self-Alignment

The design uses 4 rows of circular arc grooves (45-degree contact angle), ensuring the block has the same rated load capacity in all four directions: up, down, left, and right. Furthermore, the DF combination structure provides excellent self-aligning capability, effectively absorbing minor machining or assembly errors of the base and preventing motion binding.

D. Group D Interchangeability Assurance

As the preferred choice for the "aftermarket" maintenance, the "D" code guarantees that the block's groove size tolerances are strictly controlled within a specific range, eliminating the risk of the block being "too tight to push" or "too loose with clearance" when replaced.

4. Technical Specifications

Please be sure to check the dimensions, especially to differentiate them from the 25mm size:

5. Target Applications

The LSH20BK-F1N-N-D-M6 is widely used in small and medium-sized precision equipment:

• Electronic & Semiconductor Equipment: X/Y axis motion for pick-and-place machines, and dispensing machines.

• 3D Printers: Printhead movement axis for industrial-grade FDM printers.

• Small CNC Machine Tools: Feeding mechanism for engraving machines and laser cutting machines.

• Medical Devices: Pipetting arms for automated biochemical analyzers.

• Replacement Maintenance: Perfect substitute for flange-type blocks such as HIWIN HGW20CC and THK HSR20R.