Heavy-duty mobile sound setups demand reliable mobility without sacrificing stability. This red non-locking 4" swivel caster delivers 500-pound load capacity per wheel, making it the go-to choice for touring musicians, mobile DJs, and venues that frequently reconfigure their audio equipment.

Each caster features a robust steel frame construction with non-skid rubber wheels that protect floors while providing smooth rolling action. The 4" wheel diameter offers the right balance between maneuverability and stability, while the 5" total height from mounting plate to floor keeps your gear at an optimal working level.

The 500-pound per-caster weight rating means a set of four can safely support 2,000 pounds total – enough for the heaviest PA speakers, subwoofers, or fully-loaded rack cases. The swivel design allows 360-degree rotation for tight corner navigation, essential when moving gear through backstage areas or cramped venues.

Mobile sound companies rely on these casters for quick venue setup and teardown, while churches and schools use them to transform multi-purpose spaces. The non-locking design prioritizes smooth rolling over parking stability, making these ideal for equipment that moves frequently but doesn't require stationary lock-down.

Installation requires standard caster mounting hardware (not included) that matches your cabinet's existing mounting holes or threaded inserts. Each caster comes ready to mount with standard bolt patterns.

Seismic Audio backs these professional-grade casters with reliable construction and fast shipping, giving mobile performers the durability they need to keep their shows rolling.

Technical Specifications

Frequently Asked Questions

What's the difference between locking and non-locking casters for PA equipment?

Non-locking casters prioritize smooth rolling and frequent repositioning, making them ideal for equipment you move regularly between venues or within a space. Locking casters include a brake mechanism to prevent rolling once positioned, better for permanent installations or equipment that stays put during performances. Mobile DJs and touring acts typically prefer non-locking for quick setup changes.

How many casters do I need for a typical PA speaker or subwoofer?

Most PA speakers and subwoofers use four casters for optimal weight distribution and stability. With 500-pound capacity per caster, a four-caster setup supports up to 2,000 pounds total. This handles even the heaviest dual 18" subwoofers or fully-loaded line array cabinets. Always distribute weight evenly across all four mounting points.

Will these casters fit my existing speaker cabinet or rack case?

These casters mount using standard threaded inserts or bolt patterns found on most professional audio equipment. You'll need mounting bolts that match your cabinet's existing holes – typically M8 or M10 bolts for speaker cabinets, or 10-32 screws for rack cases. Check your equipment's mounting specifications before ordering, as hardware is sold separately.

Can I use these casters on outdoor surfaces like gravel or grass?

The 4" rubber wheels work best on smooth, hard surfaces like concrete, asphalt, or indoor flooring. While they'll roll over small obstacles, rough outdoor terrain like gravel or soft grass will significantly reduce mobility and may damage the wheels over time. For frequent outdoor use on uneven surfaces, consider larger diameter wheels or pneumatic casters designed for rough terrain.

How do these compare to heavy-duty furniture casters from hardware stores?

Professional audio casters use reinforced steel frames and industrial-grade wheel compounds designed for the vibration and weight loads of sound equipment. Standard furniture casters typically max out at 200-300 pounds and aren't built to handle the dynamic forces of bass-heavy audio gear during transport. The 500-pound rating and non-skid rubber compound justify the investment for professional applications.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov