4339478 Friction Disc for Caterpillar Equipment

The 4339478 Friction Disc is a brake friction component for Caterpillar equipment. It is listed under the Brake Lining & Pads category and is identified by the Caterpillar equipment part number 4339478, also written as 433-9478.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The supplied product data identifies the compatible equipment brand as Caterpillar; specific machine models or series are not provided.

The part is a friction disc intended for use within the brake assembly of compatible Caterpillar machinery. Its identification is based on the supplied part number and the dimensional data listed below. The available information does not specify the exact machine position, brake assembly configuration, number of discs required per assembly, or any additional components included with the part.

Cross-reference numbers

• 4339478
• 433-9478

The two numbers above represent the same identified part number in different formatting. No additional equipment manufacturer or supplier reference numbers are provided in the available product data.

Specifications

The inner diameter, outside diameter, and thickness are stated in inches as supplied for this part. The weight is stated in pounds. Length, width, and depth are listed separately in centimetres according to the available product data. These values should be checked against the dimensions of the removed disc and the service documentation for the particular Caterpillar machine before installation.

The available data does not state the friction material composition, spline or tooth profile, mounting configuration, operating temperature range, or service limits. No hardware, seals, retaining elements, or other brake components are specified as included.