✦ Roller orientation – Cylindrical rollers are arranged with their axes crossing at 90° in a single raceway, enabling each roller to contact both axial and radial raceways.

✦ Ring surface condition – Both inner and outer rings are finished with smooth, uninterrupted cylindrical faces without gear teeth.

✦ Manufacturing route – Rings are produced via open-die forging followed by rough and finish turning, with no welded or bolted joints.

✦ Raceway geometry – Rolling paths are ground with a logarithmic profile to optimize contact stress distribution.

✦ Heat treatment – Surface hardening is achieved through induction hardening, producing a uniform hardened layer of 58–62 HRC.

✦ Seal groove configuration – Grooves are machined with a trapezoidal cross-section to accommodate standard NBR or FKM seals.

✦ Accommodates angular deflection – The logarithmic raceway profile allows limited angular misalignment without edge loading.

✦ Eliminates gear wear concerns – Smooth ring surfaces remove the risk of gear tooth pitting or breakage.

✦ Allows oil-based lubrication – The open ring geometry permits oil bath or circulating oil systems.

✦ Supports high-frequency oscillation – Low inertia of the compact roller arrangement supports rapid start-stop cycles.

✦ Reduces lubricant contamination – The plain ring design prevents debris entrapment, keeping lubricant cleaner for longer.

✦ Simplifies integration with existing drives – Toothless rings directly accept chain, belt, or friction wheel drives.