Agricultural machinery works hard every day, often in dusty fields, muddy tracks, and under variable load conditions. Among the many components that keep farm equipment operational, the slewing ring bearing – commonly known as a turntable bearing or rotary bearing – is one of the most essential yet often overlooked parts, especially in tow-behind farm trailers, manure spreaders, gravity wagons, and forage boxes.

These bearings enable the trailer's drawbar or steering mechanism to rotate smoothly while carrying heavy loads of grain, silage, or fertilizer. A worn or failed bearing leads to poor steering control, uneven tire wear, and dangerous swaying during transport. That’s why choosing the right bearing – from trusted series like KLK, Z, and U – is critical for safety, reliability, and farm productivity.

We manufacture a full range of turntable slewing bearings specifically engineered for agricultural tow-behind applications. Our bearings offer direct OEM replacement as well as custom designs tailored to trailer manufacturers and repair shops.

Available series include:

KLK Series

• Medium-to-heavy duty, 4-point contact ball design

• Ideal for standard farm trailers, manure spreaders, and gravity boxes

• Balanced load capacity for mixed axial/radial/tilting moment conditions

• Available with internal or external gear options for powered rotation

Z Series

• Compact profile, lightweight yet durable

• Designed for small to medium agricultural trailers and implements

• Excellent for applications where space is limited

• Sealed against dust and moisture (standard)

U Series

• Heavy-duty unground or precision-ground raceway options

• Best for large-capacity grain trailers, silage carts, and B-train dollies

• High static load rating – resists brinelling during parked heavy loading

• Corrosion-resistant coating available as an option

We also offer custom series based on customer specifications – including custom bolt patterns, gear teeth, sealing arrangements, and materials.