66NB-31310RC Rock Chisel Bucket Tooth for Hyundai 66NB System

Full Description

The 66NB-31310RC is a replaceable excavator bucket tooth with a rock-chisel working profile. It is supplied as an aftermarket replacement for selected Hyundai-style bucket systems based on the 66NB-31310 tooth family. The base number 66NB-31310 is identified in Hyundai parts references as a TOOTH POINT. The RC suffix is primarily used by aftermarket Ground Engaging Tools suppliers to distinguish a rock-chisel or rock-tooth profile and should not be presented as a confirmed Hyundai official suffix.

The photographed product has an elongated body, a narrow pointed working end, raised longitudinal reinforcement and an enlarged rear socket. A side opening is visible near the mounting end for the tooth-retention arrangement. Raised characters corresponding to 66NB-31310 and RC are visible on the upper surface. The sample has a yellow-painted finish. No Hyundai trademark is visible on the tooth.

The tooth is installed over a compatible adapter on the excavator bucket cutting edge. Industry and bucket-system references commonly associate the 66NB family with adapter 62NB-31320, tooth pin 66NB-31340 and lock washer 66NB-31350. These related components must be verified against the actual bucket and are not assumed to be included.

Aftermarket sources commonly associate 66NB-31310RC with selected Hyundai R450LC-7, R450LC-7A, R480LC-9, R500LC-7, R500LC-7A and R520LC-9S applications. However, these model references do not establish universal compatibility. The same excavator may use several bucket capacities, adapter arrangements or tooth profiles. Parts references for the R480LC-9 and R520LC-9S also show alternative tooth numbers in different bucket configurations.

Related numbers such as 66NB-31310GG, 66NB-31310BG, 66NB-31310TL, 61NB-31310RC and 61QB-31310RC must not be treated as direct equivalents without dimensional and system verification. Similar appearance alone is not sufficient to confirm interchangeability.

The rock-chisel profile is intended for excavator digging and loading where this tooth shape and mounting system are specified. Actual suitability depends on the material being handled, bucket design, adapter condition and operating practice. Weight, dimensions, material grade, hardness, heat treatment and manufacturing process should be confirmed from the production specification for the supplied product.

This replacement tooth is suitable for distributors, importers, mining maintenance teams, repair companies and engineering contractors sourcing Ground Engaging Tools. For compatibility checking, provide the complete machine model, serial number, bucket information, existing tooth number, adapter casting number and clear photographs or dimensions of the mounting system.

Key Features

• Rock-chisel working profile

• Based on the Hyundai-style 66NB-31310 tooth family

• Raised 66NB-31310RC identification

• Narrow pointed working end with longitudinal reinforcement

• Rear socket and side-pin mounting structure

• Yellow-painted surface on the photographed product

• Intended for selected large-excavator bucket systems

• Suitable for replacement-parts and bulk B2B procurement

Compatible Machine Models

Common aftermarket reference applications:

• Hyundai R450LC-7

• Hyundai R450LC-7A

• Hyundai R480LC-9

• Hyundai R500LC-7

• Hyundai R500LC-7A

• Hyundai R520LC-9S

These models may use different bucket and tooth configurations. Confirm the machine serial number, bucket assembly, adapter and retention system before ordering.

Reference Part Numbers

• 66NB-31310 — OEM base reference

• 66NB31310RC — non-hyphenated product-number format

• 62NB-31320 — related adapter reference

• 66NB-31340 — related tooth-pin reference

• 66NB-31350 — related lock-washer reference

The following related variants are not confirmed as direct equivalents:

• 66NB-31310GG

• 66NB-31310BG

• 66NB-31310TL

• 61NB-31310RC

• 61QB-31310RC

Applications

• Excavator bucket digging

• Rock and compacted-material excavation

• Quarry and mining maintenance

• Earthmoving and loading

• Construction and infrastructure work

• Replacement of worn bucket tooth points