CAT 077-9371 DRUM SCRAPE

CAT 077-9371 is a genuine Caterpillar steel wheel for scrapers (purely original and accurate information, no additional description). It is used in the drive systems of small scrapers/skid steer loaders, providing travel support and power transmission. It is compatible with 226B/242B/246B skid steer loaders, 906H/907H small wheel loaders, etc., and can be used with the 077-8807 drive plate and 077-9259 tie rod. Cat®…

Core Parameters and Information

Project Details
Part Model: CAT 077-9371 (0779371) Wheel – Type Spur Gear

Structure Type: Integral cast steel wheel with central shaft hole, circumferentially distributed mounting holes, and external gear teeth, adaptable to drive shaft end connection

Material: ZG35CrMo alloy steel, surface hardened + tempered, conforming to CAT MES J4204 steel wheel specification

Key Dimensions: Outer diameter 180 mm, inner diameter 40 mm, thickness 45 mm, number of teeth 18, tooth pitch 10 mm, tooth height 8 mm, positioning hole diameter 40 mm, number of mounting holes 6, mounting hole diameter 10 mm, hole spacing circle diameter 120 mm

Performance Parameters: Rated load capacity 20 kN, operating temperature -40℃ to +120℃, tooth surface hardness HRC45-50, wheel body hardness HRC30-35, runout ≤0.15 mm, flatness ≤0.08 mm
Compatibility Standard: Compatible with SAE J608 wheel drive standard; positioning holes compatible with CAT 077-8727 bearing shaft ends.
Matching Relationship: Compatible with CAT 226B/242B/246B skid steer loaders, 906H/907H mini wheel loaders, 3044/3054 engine drive systems.
Compatible Models and Application Scenarios:
Compatible Equipment: CAT 226B/236B/242B/246B skid steer loaders, 906H/907H mini wheel loaders, 3044/3054 engine drive axles, small scraper travel mechanisms, etc. (Cat®…).

Application Scenarios: Scraper travel drive, loader work support, small construction machinery power transmission; withstands radial loads and drive torque, ensuring stable equipment operation.

Matching Installation: Secure to the drive shaft end with M10 bolts. Compatible with the 077-8807 drive plate, 077-9259 retainer, and 077-8727 bearing. Axial clearance after installation should be ≤0.1 mm.

Installation and Maintenance Points: Clean the steel wheel, drive shaft end, and mounting bolts. Check for deformation, cracks, and tooth surface damage. Ensure the shaft end dimensions match the center hole and the mounting hole is intact.

Align the steel wheel’s center hole with the drive shaft end, fitting it against the drive plate end face. Tighten the M10 bolts crosswise to a torque of 45-50 N·m.

Post-Installation Inspection: Ensure no looseness or wobble, smooth rotation without interference, normal gear meshing, and no axial movement.

Maintenance: Check bolt torque, gear tooth wear, and steel wheel deformation every 1500 hours. Replace immediately if tooth surface wear exceeds 0.5 mm or the wheel body is deformed.