How to Read Lippert Trailer Axle ID Numbers - Complete Guide

Understanding Lippert axle identification numbers is essential for ordering the correct replacement axle for your RV or trailer suspension system. This comprehensive guide explains how to locate your trailer axle label, decode Lippert Components spring axle numbers, and identify the right specifications for your needs.

Where to Find Your Lippert Axle Label Location

The Lippert axle label is located at the center of the axle tube, positioned underneath your trailer's frame between the tires, electric brakes, and leaf springs. This label contains the complete axle identification number needed for decoding specifications and ordering replacement parts.

Understanding Lippert Axle Identification Numbers

Lippert axle ID numbers consist of letters and numbers encoding specific details about your trailer axle - similar to how a VIN identifies vehicle specifications. Each segment represents critical information including weight capacity, hub face measurements, spring center dimensions, brake type, and mounting configuration.

Lippert Axle Number Components Explained

A complete Lippert axle description typically contains 10-12 segments. Note that ABS (Anti-lock Brake System) designation and custom axle tube part numbers may not appear on all models. Here's what each segment means:

• Model Designation: The first segment identifies the Lippert Components series (e.g., LCI52)
• Hub Face Measurement: Distance between wheel mounting surfaces in inches
• Spring Center Dimension: Distance between leaf spring centers
• Brake Configuration: SB (Spring Brake/Electric), NB (No Brakes), HB (Hydraulic)
• Spring Mounting Type: US (Under-slung) or OS (Over-slung)
• Weight Rating: Maximum load capacity in pounds
• Axle Angle: Degree of bend (e.g., 30PT for 30-degree down angle)

Component Specifications Decoded

Our advanced decoder tool automatically identifies the following component specifications based on your axle's weight rating:

• Hub Bolt Pattern: 5 on 4.5", 5 on 5", 6 on 5.5", or 8 on 6.5" depending on capacity
• Wheel Stud Size: 1/2"-20 or 9/16"-18 thread specifications
• Hub Pilot Diameter: Ranges from 2.125" to 3.125"
• Bearing Numbers: Inner and outer bearing part numbers (e.g., L44649, 25580)
• Seal Numbers: Oil seal specifications (e.g., 10-19, 10-36)
• Brake Dimensions: 10" x 2.25" up to 12.25" x 3.375"
• Spring Specifications: Number of leaves, width, and eye type
• Axle Tube Size: 2.375" to 4" round or 5"x3" rectangular

Compatible Brake Assembly Identification

Based on your axle's weight rating, our decoder automatically identifies compatible brake assemblies with direct part number references. The tool matches brake sizes and bolt patterns to ensure proper fitment:

• 2,200 lb Axles: 7" x 1-1/4" brakes with four-bolt pattern
• 3,500 lb Axles: 10" x 2-1/4" brakes with four-bolt pattern
• 4,400 lb Axles: 10" x 2-1/4" brakes with four-bolt pattern
• 4,000-8,000 lb Axles: 12" x 2" brakes with five-bolt pattern

Each brake assembly includes left and right side specific parts with manual adjustment. The decoder provides direct links to compatible replacement parts when available.

Lippert Axle Serial Number Location and Lookup

Find your Lippert axle serial number on the back of the axle beam at the center. This serial number, along with the manufacture date, is essential for warranty claims, troubleshooting axle issues, and verifying authentic Lippert Components parts. Always record this number for future reference.

Lippert Trailer Axle Product Range

Lippert Components manufactures a comprehensive line of trailer axles including:

• Spring Axles: 2,000-12,000 lb capacity for utility trailers, cargo trailers, and travel trailers
• Torsion Axles: 2,000-7,000 lb capacity ideal for boat trailers, horse trailers, and enclosed cargo trailers
• Electric Brake Options: Available on most models for enhanced stopping power
• Custom Configurations: Various hub face and spring center measurements to fit any trailer