A: Persistent oil weeping from the housing body, unusual clicking during swing acceleration, and a rapid buildup of heat around the motor base indicate stress fractures. Undetected micro-cracks will expand under pressure, causing sudden casing rupture and catastrophic internal gear binding.
A: Technicians must clean all mating surfaces to a bare metal finish, apply an even bead of high-grade anaerobic gasket sealant, and tighten the grade 10.9 mounting bolts to the specified torque rating using a cross-star pattern to prevent housing misalignment or distortion.
A: Cross-reference your physical unit with the M2X170 motor pump plate dimensions, the outer bolt hole spacing, and internal bearing seat diameters. This casing fits multiple heavy series excavators including E325B up to 375, but confirming the spline count and mount face depth prior to shipping prevents dispatch errors.
A: RITO utilizes an advanced stress-relieving heat treatment process during manufacturing to lower internal material stress. This ensures the casing remains structurally stable during quick temperature changes from freezing idles up to intense operation, preserving oil seal positioning.
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 Companie





















