116-8038: Push Arm Bearing Cap

Cat 116-8038 is a Caterpillar pusher arm bearing cap, primarily used for positioning, sealing, and protecting the pusher arm bearing of tracked bulldozer stabilizers. It is compatible with heavy-duty bulldozers such as the D8/D9 series. Below are the structured core parameters and application points:

Core Parameters (Precise and Authoritative Version)

Item Details
Basic Attributes
Model 116-8038, Pusher Arm Bearing Cap, used for axial positioning, dustproof sealing, and load protection of the stabilizer pusher arm bearing. Suitable for the connection between the pusher arm and bearing housing of tracked bulldozer stabilizers.

Compatible Models
Cat D8N/D8R/D8T, D9N/D9R/D9T bulldozers, mainly used in stabilizer pusher arm bearing housings, lift cylinder hinge bearing end caps, etc.

Material and Process
45# carbon steel, heat treated (HB 220-250), blackened surface/galvanized passivation for corrosion resistance, flatness ≤0.02mm, bolt hole position accuracy ≤0.1mm, sealing groove roughness Ra 3.2μm

Key Dimensions: Inner diameter 180.34mm (7.10in), outer diameter 240mm (9.449in), thickness 25mm (0.984in), number of bolt holes 8, hole diameter 16mm (0.63in), hole spacing circumference diameter 210mm, weight approx. 22kg, sealing groove width 10mm, depth 5mm

Functional Parameters: Compatible bearing outer diameter 180mm, sealing pressure ≤0.3MPa, operating temperature -40℃ to +120℃, compatible with nitrile rubber (NBR) seals, bolt preload torque 280-320N・m

Matching Components: Compatible seals 160-6310, bolts 8J-2880, washers 4J-0121, compatible bearing models 296-6247, etc. 0.5-1mm fittings are required during installation. Thick Sealing Gasket
Function, Installation, and Maintenance Points
Core Functions: Secures the axial position of the stabilizer push arm bearing, preventing bearing movement; seals the internal grease of the bearing housing, preventing dust, mud, and other impurities from entering; withstands lateral loads generated by the push arm’s swing, protecting the bearing from impact damage.

Installation Points: Clean the mating surfaces of the bearing cap and bearing housing, removing burrs and oil; install the sealing gasket and sealing ring, ensuring the sealing groove is clean; tighten the bolts evenly, in 2-3 stages diagonally to the specified torque; after installation, check that the bearing rotates freely without jamming or abnormal noise, and that there is no leakage at the seal.

Maintenance Points: Check bolt tightness every 500 hours and the seal condition every 2000 hours. If grease leakage or abnormal bearing wear is found, replace the bearing cap and sealing ring promptly; avoid heavy load impacts to prevent bearing cap deformation from affecting the sealing effect.