Linear ball bearings / central square flange / steel / untreated, anti-rust treatment / double bush / LFDK

[Features]
· LFDK-OH: Standard type, double type linear bearing with lubrication hole
· MLFDK-OH: Rust-resistant type, with high-level rust-proofing and reduced cost achieved through use of stainless steel.
· ULFDK-OH: Ultra-long lifetime (U ultra) type with high tolerance of moment loads and ultra-long lifetime that is 18.5 times the lifetime of the standard type.
· UMLFDK-OH: Ultra-long lifetime, (U ultra) rust-proof type.