CAT 095-2986 SEAT SPRING

CAT 095-2986 (0952986) is the spring base for the Caterpillar track undercarriage tensioning system. It supports the track tension spring, positions the tension cylinder, and guide wheels, and is the core load-bearing component of the track tensioning mechanism. It is compatible with the 400GT track undercarriage of medium and large excavators such as the 349/352/374 and heavy-duty loaders such as the 982/988, ensuring stable track tension and smooth running (Cat® Parts).

Core Parameter Table

Item Details
Part Model CAT 095-2986 (0952986) Spring Base

Type: Track tensioning system load-bearing base with spring positioning groove, tensioning cylinder connection interface, and guide wheel mounting positioning surface; used for spring support and force transmission in the track tensioning mechanism.

Material: High-strength low-alloy structural steel (e.g., Q460/500 grade), integral forging + heat treatment, hardness HB220-260; surface shot blasting + Caterpillar yellow primer, impact resistant, fatigue resistant, and corrosion resistant.

Dimensions and Weight: Compatible with 400GT track tensioning springs; outer diameter (commonly 200-250mm), length approximately 350-400mm, width approximately 200-250mm, thickness approximately 50-60mm; single weight approximately 30-40kg; bolt hole spacing/diameter conforms to Caterpillar tensioning system standards.

Compatible Models 349, 352, 374 medium and large excavators, 982, 988 heavy-duty loaders; compatible with 400mm track tensioning mechanisms, matching 095-2943 track shoes, 095-2963 track plates, and other undercarriage components.

Functional Positioning: Supports the tension spring, transmits tension force to the guide wheel; positions the tension cylinder and guide wheel, absorbs travel impact, maintains constant track tension, and protects track links, track rollers, and guide wheels.

Application Scenarios and Supporting Components:
Working Conditions: Suitable for heavy-duty working conditions such as mining and infrastructure construction, bearing the preload of the track tension spring (commonly 10-15 tons) and travel impact loads. The 400GT series tensioning system balances tension force and cushioning.

Supporting Components: Compatible with track tension springs, tension cylinders, guide wheels, and 095-2963 track tensioning components. The fixing plate and track links are matched; installed in the tensioning chamber at the front of the track frame, connecting the tensioning cylinder and the guide wheel, and supporting the tension spring;

Function: Fixes the tension spring, transmits the thrust/tension of the tensioning cylinder, absorbs ground impact, and prevents track link wear, track slippage, or deviation caused by excessively loose/tight tracks.

Installation and Maintenance Points

Installation: Clean the connection surfaces of the base, tension cylinder, and guide wheel, ensuring they are free of oil and impurities; tighten bolts to the original torque (300-350 N·m, refer to the model manual); after installation, check the preload of the tension spring and the positioning of the guide wheel, and adjust the track tension to the standard range (track sag 100-150 mm);

Maintenance Cycle: Check for base deformation, cracks, and bolt torque every 250 hours; shorten this to 100 hours in harsh working conditions such as mining;

Replacement Standard: Replace the base if it shows cracks, deformation, worn/deformed bolt holes, or if the spring positioning groove is worn, causing spring misalignment; prioritize original parts to avoid tension failure or track detachment caused by dimensional deviations/insufficient material strength.