At a Glance
- SKU: 3500-86-3-D-KIT
PRODUCT INFORMATION
Product Details
Trailer Axle Beam Kit
Lippert 3500 lb Trailer Axle Beam – 86" Hub Face – 3" HD Tube – 4" Drop W Loose Perches
A 3,500 lb drop trailer axle beam configured with an 86" hub face, heavy-duty 3" tube, EZ Lube spindles, and brake flanges for utility and cargo trailer axle replacement.
Part Number: 3500-86-3-D-KIT 3,500 lb Capacity 86" Hub Face / 3.5" Drop
Overview
This Lippert 3,500 lb trailer axle beam is built for replacement applications where the trailer requires an 86" hub face, 4" drop configuration, heavy-duty 3" axle tube, EZ Lube spindle setup, and brake flange compatibility. It is intended for utility and cargo trailer applications where the listed measurements match the original axle configuration.
R&P Service Insight
Axle replacement should always begin with measurement verification. Hub face, drop style, brake flange spacing, spindle configuration, and spring center all affect whether the axle will fit correctly under the trailer.
- Hub Face First: Match the 86" hub face measurement to the trailer’s original axle before ordering.
- Drop Configuration: A 4" drop axle lowers trailer deck height compared to a straight axle configuration.
- Brake Compatibility: Confirm brake flange style, brake size, hub/drum setup, and spindle compatibility before installation.
R&P Knowledge Hub
Compatibility: Designed for trailer axle replacement applications where a 3,500 lb axle beam, 86" hub face, 4" drop, and 3" tube configuration are required.
Trailer / System Fit: Commonly used in utility and cargo trailer axle replacement work where the existing axle dimensions and mounting setup match.
Installation Notes: Verify hub face, spindle style, brake flange spacing, spring center, drop orientation, and matching brake/hub components before installation.
Performance Insight: Drop axles lower trailer deck height while the heavy-duty 3" tube increases beam rigidity compared to smaller-diameter axle tubing.
Brand & Fitment Note
Selling Brand: Lippert / R&P Carriages supplied axle beam kit.
Application Reference: This listing is based on verified axle measurements and configuration details. Match the axle to your trailer by dimensions, capacity, spindle setup, drop style, and brake/hub compatibility.
What This Means: This listing is for a Lippert 3,500 lb trailer axle beam kit in the listed configuration. Do not rely on trailer brand alone for fitment.
Before Ordering: Verify all measurements, brake/hub specifications, spring center, spindle type, and included components before installation.
R&P Repair Insight
Many axle fitment issues come from matching only the weight rating and missing the dimensional details. A 3,500 lb axle still has to match the trailer’s hub face, spring center, brake setup, spindle configuration, and drop or straight style.
- Confirm Hub Face: Measure from hub face to hub face, not overall axle length.
- Confirm Drop Style: Replace a drop axle with the correct drop configuration unless the trailer setup is being intentionally changed.
- Confirm Spring Center: Spring center must match the trailer suspension layout or be provided before any perch welding request is confirmed.
Features
3,500 lb Trailer Axle Beam
Configured for 3,500 lb trailer axle replacement applications where the listed measurements and components match the existing trailer setup.
86" Hub Face Measurement
Built around an 86" hub face width, a key measurement when matching a replacement axle beam to the trailer.
Heavy-Duty 3" Tube
Uses a 3" axle tube for increased rigidity compared to smaller standard 3,500 lb axle tube profiles.
4" Drop EZ Lube Setup
Drop axle configuration helps reduce deck height, while EZ Lube spindles support easier spindle grease service.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 3500-86-3-D-KIT |
| Brand | Lippert |
| Product Type | Trailer axle beam kit |
| Axle Capacity | 3,500 lb |
| Hub Face | 86 inches |
| Tube Size | 3" heavy-duty tube |
| Axle Style | 4" drop axle |
| Spindle Style | EZ Lube |
| Brake Flange to Flange | 79.66 inches |
| Spindle End to End | 90.38 inches |
Fitment / Application
| Category | Details |
|---|---|
| Trailer Type | Utility and cargo trailer axle replacement applications |
| Primary Fit | Trailers requiring a 3,500 lb axle beam with 86" hub face and 4" drop configuration |
| Required Match Points | Hub face, spring center, drop style, spindle setup, brake flange spacing, and compatible hub/brake components |
| Notes | Do not order by trailer model alone. Confirm physical measurements and axle configuration before installation. |
Included Components
| Quantity | Item |
|---|---|
| 1 | Lippert 3,500 lb trailer axle beam |
| 1 | 86" hub face / 4" drop axle configuration |
| 1 | Heavy-duty 3" tube axle beam |
| 1 set | EZ Lube spindle configuration |
| Included | Brake flanges as part of the axle beam configuration |
| Included with -KIT | Loose spring perches / spring seats unless welded service is requested, measured, and confirmed before shipment |
Important -KIT Axle Notice
What Comes in the -KIT: Spring Perches Are Included Loose
This -KIT includes the axle beam and loose spring perches / spring seats. The spring perches are included as separate pieces. Included does not mean welded.
Spring perches ship loose by default. They are not welded to the axle tube before shipment unless the customer specifically requests perch welding in the order notes, provides the correct Spring Center measurement, and R&P confirms the weld-on request before the axle ships.
Repetition matters: If the listing says “spring perches included,” that means loose spring perches are included with the kit. It does not mean the spring perches are already installed, welded, or ready for towing.
Do not install or tow with loose spring perches. The perches must be measured, positioned, squared, and welded to the axle tube before the axle is placed into service.
When Will R&P Weld the Spring Perches?
R&P may weld the spring perches before shipment only when the order clearly gives us the information needed to do it correctly.
- The customer must request welded spring perches in the order notes.
- The customer must provide the Spring Center measurement.
- R&P must confirm the weld-on request before shipment.
Default rule: If the order does not clearly request welded perches and does not provide a Spring Center measurement, the spring perches ship loose.
How to Find Your Spring Center Measurement
Spring Center is the distance from the center of one leaf spring to the center of the opposite leaf spring. This is the measurement used to locate where the spring perches need to be welded on the axle tube.
- Best method with old axle: Measure from the center of one existing spring perch / spring seat to the center of the opposite spring perch / spring seat.
- Best method from the trailer: Measure from the centerline of the left leaf spring pack to the centerline of the right leaf spring pack where the axle sits.
- Leaf spring center bolt method: Measure from the center of the center bolt / locating pin on one spring pack to the center of the center bolt / locating pin on the other spring pack.
- Do not measure outside-to-outside. Spring Center is a center-to-center measurement.
- Do not guess from deck width. Deck width can be helpful context, but it is not a substitute for the actual Spring Center measurement.
Axle Measurement Diagram
Use the axle measurement diagram below as a visual reference while confirming axle dimensions and installation details. Spring Center must still be measured center-to-center at the trailer’s leaf springs or existing spring perches.
Why Welding the Perches Matters
This image shows a real-world installation problem where loose spring perches were not welded before use and brake wiring was torn out. This is exactly why the axle must not be installed, towed, or placed into service while the spring perches are still loose.
Loose perches can allow the axle to move or rotate out of its intended installed position. That can damage brake wiring, brake components, suspension parts, tires, and the trailer. The perches must be properly welded before road use.
| Question | Answer |
|---|---|
| Are spring perches included in the -KIT? | Yes. The spring perches / spring seats are included as loose parts. |
| Are the spring perches welded on by default? | No. They ship loose by default. |
| Can R&P weld the perches before shipping? | Only if the customer requests it in the order notes, provides the correct Spring Center measurement, and R&P confirms the request before shipment. |
| What measurement is needed for welding? | Spring Center: center of one leaf spring / spring perch to the center of the opposite leaf spring / spring perch. |
| Can the axle be used with loose perches? | No. Do not install, tow, or place the axle in service until the perches are properly welded. |
| What can happen if perches are not welded? | Loose perches can allow the axle to move or rotate, which can damage brake wiring, brake parts, suspension components, tires, and the trailer. |
| Which way does camber face? | If the axle is cambered, the arch goes up in the middle when installed. |
Order Note Wording Customers Can Use
Customers who want R&P to weld the spring perches should put clear instructions in the order notes before checkout.
Example order note: “Please weld spring perches before shipping. My Spring Center measurement is ____ inches, measured center-to-center.”
Final reminder: Unless the order notes request welded perches, the Spring Center measurement is supplied, and R&P confirms the weld request, this -KIT ships with loose spring perches.
Thank You For Choosing R&P Carriages For Your Online Shopping Source!
Verify hub face, brake flange spacing, spindle end-to-end measurement, spring center, drop orientation, brake/hub compatibility, and included components before installation. Do not install or tow with loose spring perches; perches must be properly positioned and welded before road use.
3500-86-3-D-KIT, Lippert 3500 lb drop axle, 3500 lb trailer axle beam, 86 inch hub face axle, 3 inch tube trailer axle, 4 inch drop trailer axle, EZ Lube trailer axle, utility trailer axle replacement, cargo trailer axle replacement, 3500 lb axle beam kit
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