# Rack rail kit HP Enterprise Hewlett Packard Enterprise Ball bearing rail kit - 2U

**URL:** https://aio.lv/en/product--hp-enterprise-720864-b21-rfb--205694
**Data updated:** 2026-01-12 19:28 (EET)
**Category:** Server Parts & Components
**Manufacturer:** HP Enterprise
**Manufacturer code:** 720864-B21-RFB
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

2U ball bearing rack rail kit from HP Enterprise (Hewlett Packard Enterprise) designed to mount and slide compatible 2U server equipment in standard server racks. The kit provides ball-bearing sliding mechanism for easier access to server internals, enabling safe installation, maintenance and removal. Suitable for data centers and server rooms where reliable, space-saving rack mounting is required.

## Long description

HP Enterprise 2U ball bearing rack rail kit (MPN 720864-B21-RFB) is a mounting solution designed to install compatible 2U server equipment into standard 19" server racks. The kit incorporates a ball-bearing sliding mechanism to enable smooth front-to-back movement of the mounted server, facilitating access to internal components for installation, maintenance and removal while maintaining secure attachment to rack rails.
Advantages
The ball-bearing slides reduce friction and provide controlled, repeatable movement when pulling the server out for service. Manufactured for compatibility with HP Enterprise server chassis, the rail kit supports secure mounting and alignment in standard rack depths. The components are corrosion-resistant and engineered to withstand frequent slide cycles common in data center and server room maintenance routines.
Suitable for
Mounting 2U HP Enterprise compatible servers in 19" rack enclosures
Data center and colocation rack installations requiring serviceable sliding rails
Server rooms where regular access to internal hardware is necessary for upgrades or repairs
Environments that require reliable, space-efficient rack mounting
Key specifications
Brand: HP Enterprise (Hewlett Packard Enterprise)
Manufacturer part number (MPN): 720864-B21-RFB
Form factor supported: 2U server chassis
Mount type: Rack rail kit with ball-bearing sliding mechanism
Compatibility: Designed for HP Enterprise 2U-compatible server models and standard 19" racks
How to use
Install the fixed rail sections into the rack rear and front posts according to the rack's mounting points, then attach the server-side sliding rails to the server chassis following the manufacturer's alignment marks. Slide the server into the installed rails until the chassis latches or screws align with the front rack posts. Verify smooth operation by extending and retracting the server on the ball-bearing slides; secure with screws or fasteners as required for permanent installation.
Usage recommendations
Ensure rack depth and server model compatibility prior to installation. Use recommended mounting hardware and torque settings from HP Enterprise to avoid alignment issues. Periodically inspect the slides for debris and lubricate only with manufacturer-approved products if sliding performance degrades. During maintenance, fully support the server before removing locking screws to prevent sudden movement.

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### What is the warranty period?

All HP Enterprise products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HP Enterprise service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

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