CAT 606-2449 Sleeve Bearing

Cat 606-2449 is a straight sleeve bearing designed by Caterpillar specifically for articulated joints in small construction machinery. It is used for sliding support and friction reduction, and is suitable for pivot joints such as booms, sticks, and lift cylinders. The following is the structured core information for Cat® Parts:

Core Parameters
Item Details
Basic Information Model 606-2449, straight sleeve bearing without grooves, suitable for heavy-duty, low-speed oscillating conditions, bearing only radial loads, no internal/external grooves or cross bores, installation method is press-fit/transition fit

Compatible Models Cat 906/907/908 small loaders, 305/306/307 excavators

Material and Manufacturing Process Steel backing + bronze alloy (CuSn8P) bimetallic, steel backing thickness 1.8mm, bronze layer thickness 2.2mm, tin-plated surface for anti-seize, hardness HRC 18-22, surface roughness Ra 1.6μm

Key Dimensions Inner Diameter 65mm (2.559in), outer diameter 75mm (2.953in), length 80mm (3.150in), wall thickness 5mm, chamfer 1×45°, weight approx. 1.2kg

Functional parameters: Radial load capacity ≤120MPa, coefficient of friction ≤0.12 (oil lubrication), operating temperature -40℃ to +150℃, press-fit interference 0.02-0.04mm, limiting speed ≤500rpm

Matching parts: Fits 65mm diameter pin, 75H7 inner diameter bearing housing, 8T-4120 bolts

Installation and maintenance points:

Installation: Clean the bearing bore and bushing surfaces. Press vertically using a special press, avoiding skewing. After pressing, check the inner diameter roundness ≤0.02mm and the clearance with the pin 0.04-0.08mm. Apply lithium-based grease after installation.

Maintenance: Check lubrication and wear every 500 hours, measure the inner diameter every 2000 hours, and replace if wear exceeds 0.15mm; avoid dry friction and replenish grease regularly to prevent seizing.