Middle Atlantic CBS FOR 28DP ERK - CBS-ERK-28

Middle Atlantic CBS-ERK-28 Caster Base for 28-Inch ERK Racks

Overview

The Middle Atlantic CBS-ERK-28 is a roll-out caster base designed specifically for the ERK open-frame rack series at 28-inch cabinet depth. If your installation requires moving fully loaded rack systems during commissioning, maintenance, or space reconfiguration, this base handles the job — rated to 400 lbs UL load capacity and a 1,300 lb static weight capacity, with a low-profile 4-inch height addition that keeps the overall rack footprint compact. The CBS-ERK-28 (often searched as CBS ERK 28) mounts directly to the ERK base series, so you're not improvising with generic casters or shimming mismatched hardware.

Key Features

• 400 lb UL Load Capacity: UL-listed at 400 lbs dynamic rolling load — enough headroom for a fully populated 28U ERK loaded with switches, patch panels, and power distribution. The UL listing means the rating is independently verified, not a manufacturer estimate.
• 1,300 lb Static Weight Capacity: Once the rack is positioned and the casters are locked, the base supports up to 1,300 lbs of static load. That's relevant in dense AV or security headend builds where cumulative equipment weight climbs fast.
• 4-Inch Profile: At only 4 inches tall (10.2 cm), the CBS-ERK-28 adds minimal height to the finished rack assembly — important when ceiling clearance is limited or when the rack must fit under a raised-floor opening.
• 28-Inch Depth Match: Built to pair with 28-inch ERK racks, so the footprint alignment is exact. Mismatched depth bases create overhang or stability issues under load — this base eliminates that variable.
• Black Wrinkle Powder Coat Finish: The wrinkle powder coat is durable against rack-room handling, resists scuffs during moves, and matches the standard Middle Atlantic ERK finish for a consistent equipment room appearance.
• 17.7 lb Base Weight: At 17.7 lbs (8 kg), the CBS-ERK-28 adds minimal weight to the overall rack assembly while delivering substantial structural support — a favorable strength-to-weight ratio for a mobile base at this load rating.

Integration & Compatibility

The CBS-ERK-28 is designed for the Middle Atlantic ERK open-frame rack series at 28-inch depth. Verify your rack's depth before ordering — Middle Atlantic produces caster bases for multiple depth configurations, and using the wrong depth base compromises both fit and load stability. This base is a direct bolt-on for compatible Middle Atlantic ERK racks and fits naturally into rack infrastructure deployments where occasional repositioning is required, such as security operations centers, equipment rooms, or network rack enclosures in commercial facilities. For integrators planning a full headend build, pair this base with appropriate rack power distribution and consider rack accessories from the same ERK family for consistent fitment. If you're specifying multiple racks in a larger AV rack system, confirm caster base depth selections per rack independently.

Frequently Asked Questions

Q: What is the UL load capacity of the CBS-ERK-28?

A: The CBS-ERK-28 has a UL-listed dynamic load capacity of 400 lbs (181.4 kg). The static weight capacity is 1,300 lbs (589.7 kg).

Q: How much height does the CBS-ERK-28 add to a rack assembly?

A: The base is 4 inches (10.2 cm) tall, so it adds exactly 4 inches to the overall height of your ERK rack build.

Q: Which rack series is the CBS-ERK-28 compatible with?

A: The CBS-ERK-28 is built for the Middle Atlantic ERK open-frame rack series at 28-inch depth. Confirm your rack's depth matches before ordering.

Q: What is the finish on the CBS-ERK-28?

A: Black wrinkle powder coat — durable against handling and consistent with standard ERK rack finishes.

Q: What does the CBS-ERK-28 weigh?

A: Product weight is 17.7 lbs (8 kg). Shipping weight is 19.7 lbs (8.9 kg).

Ted Perry

The CBS-ERK-28 is a purpose-built caster base I'd specify any time a fully populated ERK rack needs to roll during commissioning or regular maintenance — the 400 lb UL dynamic load rating gives you real headroom for dense builds, and the 4-inch height addition keeps ceiling clearance concerns manageable in most equipment rooms.

Technical Highlights:

• UL Load Capacity (400 lbs): Independently tested and listed — not a self-reported figure. Relevant when you're rolling a rack loaded with NVRs, switches, and UPS hardware across a data center floor.
• Static Weight Capacity (1,300 lbs): Once locked in position, the base handles 1,300 lbs of static load — well above what most populated ERK builds will actually reach, so you have a genuine safety margin.
• Low 4-Inch Profile: Adding only 4 inches of height keeps finished rack height within bounds for standard equipment room door clearances and raised-floor environments.

Deployment Considerations:

• Depth match is non-negotiable — the CBS-ERK-28 is spec'd for 28-inch ERK racks specifically. Ordering the wrong depth base creates misalignment that stresses mounting points under dynamic load.
• At 17.7 lbs, this base won't significantly change your rack's center of gravity, but always engage caster locks before loading or unloading equipment from a mounted rack.

Best fit: security operations centers and enterprise equipment rooms where ERK racks are configured off-site, rolled into position during installation, then locked in place for long-term operation.