CAT 473-8301 ROLLER-GUIDE

CAT 473-8301 is a Caterpillar genuine Roller Guide Rod Assembly, primarily used in the working devices or chassis of equipment such as loaders and excavators. Its core function is to provide precise guidance and support for the rollers, adapting to heavy-duty, high-frequency reciprocating, or oscillating conditions, ensuring smooth operation of the components. The following are the key details.

Core Technical Parameters

Item Details
Part Model: CAT 473-8301 (Roller Guide Rod Assembly, including guide rod, roller, bearing, and positioning components)

Material: Guide rod is made of 4140 alloy steel, tempered (HRC 28-32), with a chrome plating thickness of 0.05-0.10mm, wear-resistant and corrosion-resistant; roller outer ring is made of wear-resistant rubber, inner ring is made of 52100 bearing steel, hardened (HRC 60-64)

Key Dimensions: Guide rod diameter approx. 35mm, total length approx. 280mm; roller outer diameter approx. 85mm, width approx. 40mm; mounting hole spacing approx. 220mm, suitable for standard mounting positions, clearance 0.03-0.06mm

Single Weight: Approx. 3.2kg (7.05 lbs)

Load and Speed: Rated radial load ≥80kN, maximum roller speed ≤1500rpm, suitable operating temperature -40℃ to + 120℃

Key Features: The guide rod’s chrome plating has a hardness of HV 800-900, ensuring wear resistance; the rollers feature built-in double-row needle roller bearings for high load-bearing capacity; components are pre-lubricated with an IP65 sealing protection rating, providing dust and mud protection.

Structure and Core Functions:

Integrated Guide Support: The guide rod provides rigid support, while the rollers achieve flexible rolling through built-in bearings, providing precise guidance for the movement of components such as the boom, stick, and bucket, reducing frictional resistance and energy consumption.

Reinforced Wear-Resistant Design: The combination of the guide rod’s chrome plating and the rollers’ wear-resistant rubber/bearing steel withstands heavy loads and frequent friction, extending the service life of components and related parts and reducing maintenance frequency.

Sealing and Lubrication Guarantee: The rollers integrate contact seals to prevent dust and mud from entering the bearings; pre-filled with extreme pressure lithium-based grease, suitable for long-term stable operation under complex working conditions.

Positioning and Buffering Function: Components are fixed by positioning pins/bolts, limiting component displacement; the rollers absorb impacts and vibrations during movement, improving equipment operational stability and reducing noise.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 966K/XE and 972K/XE loaders, 330D2 and 345D2 excavators, some skid steer loaders, and the working devices or chassis travel mechanisms of small construction machinery.

Installation Locations: Boom and stick connecting pins, bucket linkages, chassis track tensioning mechanisms, working device limit guides, etc.

Core Purpose: Provides guidance and rolling support for the swinging/sliding components of heavy equipment working devices, reducing friction and impact, ensuring precise movements and smooth operation, suitable for heavy loads and complex working conditions.