A: Mount a dial indicator between the frames, lift the boom, and measure vertical play exceeding factory wear limits.
A: Use a high-pressure lithium complex grease with molybdenum disulfide, pumping it into the seals every 250 hours.
A: It features standard through-holes on the outer ring and tapped threads on the inner ring to match factory bolts.
A: The deep hardened surface resists deformation while the inner core remains tough to absorb sudden energy spikes.
Q: What quality options are available?
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies






















