7Y3551 Straight Sleeve Bearing for Caterpillar Equipment

The 7Y3551 is a straight sleeve bearing used in Caterpillar equipment, including Caterpillar engines and excavators. The bearing is used in machine link assemblies to provide a rotating interface between connected components. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar-format number 7Y-3551 and the unhyphenated SKU 7Y3551. The supplied product data classifies it as a dimpled and milling bearing and specifies a steel construction with an inner groove.

Fitment

The bearing is listed for the following Caterpillar equipment and models:

• Caterpillar engine and machine applications
• Caterpillar excavator applications
• Caterpillar 3116
• Caterpillar 3126
• Caterpillar 3126B
• Caterpillar 3306
• Caterpillar 3456
• Caterpillar 3456B
• Caterpillar 3456E
• Caterpillar C-9
• Caterpillar 322B L
• Caterpillar 322B LN

Fitment should be checked against the equipment model and the dimensions of the installed bearing before replacement. The model designations listed above include engine series and excavator model information from the available application data.

Cross-reference numbers

• 7Y-3551 — part number format with separator
• 7Y3551 — SKU and unhyphenated part number format

Specifications

The bearing specification includes one internal groove, no external groove and no cross holes. The stated dimensional data is an inner diameter of 2.76 inches, an outer diameter of 3.35 inches and an overall length of 3.15 inches. The recorded metric package dimensions are 9 cm in length, 9 cm in width and 9 cm in depth; these values are listed separately from the bearing dimensions.