CAT 330-9779 98.45mm Inner Diameter Transfer Gear Case Retainer

CAT 330-9779 is a Caterpillar original equipment bucket tooth holder retainer (GET system), adapted for quick locking and anti-loosening of excavator bucket teeth (tooth tip and tooth holder). The following is pure original data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 330-9779, Type: Elastic Locking Pin Type Fixture, Material: 65Mn Spring Steel (Surface Oxidation Blackening + Galvanized Double Corrosion Protection), Single Weight: 0.85 kg, Applicable Working Conditions: Heavy-duty impact operations in mining/infrastructure, etc., Working Temperature: -40℃ to +120℃, Protection Rating: IP65, Compatible with Cat J450/J500 Series Tooth Seats, Rated Locking Force ≥8 kN, Impact Resistance ≥5000 cycles (10 kN impact)

Key Dimensions (Metric/Imperial)
Overall Length: 185 mm (Tolerance ±1 mm) / 7.28 in, Locking Pin Diameter: 22 mm (Tolerance 0/-0.015 mm) / 0.866 in, Locking Tongue Width: 38 mm (Tolerance ±0.5 mm) / 1.496 in, Mounting Slot Width: 25 mm (Tolerance + 0.2/-0 mm)/0.984 in, Locking stroke 12 mm (tolerance ±0.3 mm)/0.472 in, Head diameter 42 mm (tolerance ±0.5 mm)/1.654 in, Elastic opening angle 15° (tolerance ±1°)

Performance parameters: Elastic recovery rate ≥95% (after 1000 cycles), Tensile strength ≥1200 MPa, Yield strength ≥950 MPa, Hardness HRC 42-48, Locking pin insertion/extraction force ≤60 N, Applicable tooth seat pin hole diameter φ22.05-22.10 mm, Applicable tooth tip thickness 30-35 mm

Structural and performance advantages: Elastic locking structure: One-piece molding of 65Mn spring steel, elastic opening design of the locking tongue, automatic springback locking after installation, preventing the tooth tip from falling off under heavy load impact, suitable for frequent loading and unloading conditions.

Dual anti-corrosion process: Oxidation blackening + galvanizing treatment, salt spray resistance ≥96 hours, suitable for harsh working environments such as humid/dusty/acidic/alkali environments, extending service life.

Heavy-duty compatibility: Rated locking force ≥8 kN, can withstand lateral impact and vibration during bucket digging, precisely matches Cat original tooth seats/teeth tips, no risk of gaps or loosening.

Quick installation and removal: No special tools required, can be completed by hand, improving tooth replacement efficiency and reducing downtime.

Installation and maintenance points (raw data)

Installation: Clean the tooth seat pin hole and tooth tip groove (free from oil/rust/burrs), compress the retainer locking tongue and insert it into the pin hole, confirm that the locking tongue is fully extended and locked into the tooth tip groove, after installation, pull the tooth tip without loosening (gap ≤0.2 mm), the coaxiality of the locking pin and pin hole ≤0.1 mm.

Maintenance: Check the bolt elasticity and anti-corrosion coating every 200 hours. If the elasticity fails (insufficient rebound) or the coating peels off, replace immediately. Avoid striking the bolt head with hard objects to prevent deformation and jamming. For long-term storage, apply anti-rust oil and seal to prevent moisture.

Troubleshooting: Common faults include locking failure and jamming during insertion and removal, mostly caused by bolt deformation, coating wear, or pin hole wear. Replace the retainer and check the wear of the pin hole (repair if it exceeds 0.15 mm).