Deploying Standalone Devices in Rackmount Infrastructure

Not everything worth putting in a rack comes in a rackmount package. But as computing, networking, and other electronics increasingly move into rack infrastructure, market opportunities are emerging for products that were never designed for rack installation.

Rack shelves provide a standardized platform for equipment that lacks rack-mounting features or would be impractical to attach directly to rails. Instead of redesigning every component as a dedicated rackmount unit, teams can deploy standalone equipment faster and adapt rack-based systems more easily to changing customer requirements.

Rack shelves provide another way to support customers who need to update rack-based systems for applications such as:

• Employing desktop computers in industrial systems
• Integrating laboratory instruments into a test rack
• Taking advantage of more types of power supplies and electronic controllers
• Ease of replacing or updating communications devices

Shelf selection should start with the equipment it supports: its height in rack units, enclosure depth, static and dynamic load, heat output, and the frequency with which users will need access during operation or maintenance.

Serviceability of shelf-mounted products is another design consideration. Will users need front-panel visibility, rear-panel access, clearance for removable media, room for lid removal, or space to disconnect cables without pulling other equipment from the rack? If regular access is expected, an adjustable or sliding shelf may be more suitable than one that is fixed.

Universal fixed and adjustable rack shelves

Hammond Manufacturing addresses these needs with universal fixed and adjustable rack shelves for non-rackmount equipment. Shelf choice affects both product positioning and field integration. A product that can be documented for fixed-shelf installation may appeal to customers with stable rack configurations, while a product that benefits from adjustable or sliding support may need more detailed guidance on access, clearance, and changeover requirements.

The company's RAS Series of fixed shelves offers a variety of depths and heights to support non-rackmount equipment in four-post 19 in. and 23 in. rack configurations. Available in solid or vented configurations like the RASV190107UBK1 (Figure 1), the RAS Series features a fixed-depth platform in various sizes, catering to equipment with predictable dimensions and installation requirements. Depending on the model, maximum suggested loads range from 42 lb. for a 1 U version to 200 lb. for a 3 U version.

Figure 1: The RASV190107UBK1 vented fixed shelf is designed to let heat dissipate and allow cool air to circulate underneath equipment. (Image source: Hammond Manufacturing)

Adaptable platform with adjustable shelves

When designers need more flexibility than a fixed shelf provides, Hammond’s ADS Series adjustable rack shelves offer an adaptable platform for deeper, heavier, or changing equipment configurations. The ADS Series uses a telescoping shelf that adjusts to the available rack depth, helping accommodate product variations, mixed equipment depths, and future system changes.

Adjustable shelves are well suited for environments where equipment must be accessed regularly, such as instruments that require frequent inspection. They can also function as a pull-out workspace or keyboard shelf.

Also available in solid or vented versions, ADS shelves occupy 1 U of rack space and support equipment loads of up to 330 lb. With the optional ADSB support bar (Figure 2), they can support as much as 550 lb. This gives designers and integrators a practical option for accommodating heavy equipment within existing rack infrastructure.

Figure 2: Hammond's ADSB support bar increases ADS Series shelf weight support to as much as 550 lb. (Image source: Hammond Manufacturing)

For product designers, rack-shelf suitability depends on more than whether the product physically fits a 19 in. or 23 in. rack. Early design reviews should account for the product footprint, total installed weight, center of gravity, required shelf depth, airflow, cable entry and exit points, front- or rear-panel access, service clearance, and any need for restraints or mounting hardware.

Conclusion

For product designers, Hammond Manufacturing’s fixed and adjustable rack shelf options create a practical path to rack-based deployment without requiring every product to be a rackmount unit. With multiple depths, solid and vented designs, four-post rack compatibility, and load capacities for both lighter devices and heavier equipment, these shelves help preserve the flexibility of standalone product development while enabling deployment in a wider range of rack-based applications.