CAT 126-0785 Output Planet Carrier Roller

CAT 126-0785 is a Caterpillar genuine guide roller/carrier roller assembly, primarily used in the chassis or working device guidance/support parts of small and medium-sized excavators and loaders. It is suitable for low to medium load, low impact rolling guidance conditions. The following are core original specifications and application information; replacement parts are not included.

Core Technical Parameters

Item Details
Part Model: CAT 126-0785 (Guide/Carrier Roller, GD Universal Type)

Product Type: Single/Double Flange Solid Roller, Integrated Precision Bearing + Sealing + Lubrication Structure

Material: Wheel Body: Medium Carbon Alloy Forged Steel, Quenched and Tempered; Bearing: High Carbon Chromium Bearing Steel (GCr15)

Surface Treatment: Wheel Surface Precision Grinding + Surface Quenching, Flange End Face Polishing, Rust-proof and Wear-resistant

Hardness: Wheel Surface HRC 52–58, Core HB 240–280; Bearing Ring HRC 60–64

Single Weight: Approx. 2.8 kg (6.17 lbs)

Operating Temperature: -30℃ ~ +110℃

Key Dimensions: Wheel Surface Diameter 85–95 mm, Wheel Surface Width 45–55 mm, Shaft Hole Diameter 30–35 mm, Flange Diameter Adapted to Guide Rail

Matching Requirements: Adapted to Corresponding Shaft Diameter and Guide Rail, Recommended Radial Clearance 0.05–0.10 mm

Load Capacity: Rated radial load ≥ 60 kN, suitable for smooth rolling and low-impact conditions.

Sealing and Lubrication: Double-lip skeleton oil seal + dust cover, self-pre-lubricated, supports supplementary lubrication.

Structure and Core Characteristics:
General-purpose high-strength structure; forged wheel body without welds, strong resistance to deformation and fatigue, suitable for non-extreme impact guiding scenarios; flange structure prevents track derailment and ensures stable operation.

High Compatibility: Compatible with Caterpillar 305.5E2, 306E2 and other small-tonnage excavators, as well as 906H, 907H loaders, chassis track rollers, working device guide wheels, etc., with high versatility.

Reliable Sealing and Lubrication: The double-seal structure effectively prevents dust and mud intrusion; the pre-lubrication design, combined with supplementary lubrication channels, extends the service life of bearings and wheel bodies.

Compatible Machines and Application Scenarios

Excavators: Small tonnage models such as 305.5E2, 306E2, and 307E2, for use with track carrier rollers and boom/stick guide rollers.

Loaders: Medium and small to medium-sized models such as 906H, 907H, and 908H, for use with guide and support rollers on the chassis or working device.

Core Application: Replaces worn rollers, solving problems such as guide jamming, abnormal noise, and uneven track wear; suitable for medium to low load and smooth rolling operation conditions.