A: Deep vertical scoring marks along one side of the chrome rod surface mean the internal guide bushings are worn, leading to uneven metal-on-metal rubbing.
A: Mechanics should apply a generous coating of heavy-duty molybdenum disulfide grease to the pin and internal bushing face to prevent initial galling during startup.
A: Yes, part 187-8961 and its interchange 204-3616 perfectly preserve original pin centers, cylinder stroke lengths, and port placements for Caterpillar setups.
A: The hard chrome plating undergoes multi-layer micro-layer deposition, providing exceptional resistance against moisture corrosion and atmospheric rusting.
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






















