Lippert 3500 lb Trailer Axle Beam - 86.5" Hub Face - 3" HD Tube - Straight EZ Lube
Lippert 3,500 lb trailer axle beam with 86.5" hub face, 3" heavy-duty tube, straight cambered configuration, EZ Lube spindles, and brake flanges for cargo and utility trailer axle replacement.
Overview
This Lippert 3,500 lb trailer axle beam is built for trailer axle replacement where the required hub face, tube size, spindle style, and brake flange configuration match the original axle. The 86.5" hub face helps determine wheel spacing and trailer track width, while the straight cambered beam keeps the trailer at standard ride height when installed correctly.
R&P Service Insight
Axle replacement is measurement-driven. Before ordering, match the hub face, spring center, tube diameter, spindle style, and brake flange setup to the trailer being repaired.
- Hub Face: Confirm the 86.5" hub face measurement before replacing an existing axle.
- Tube Size: This listing is for a 3" heavy-duty axle tube, not a 2.4" tube.
- Camber Direction: If the axle has camber, the arch faces upward in the middle when installed.
R&P Knowledge Hub
Compatibility: Intended for compatible 3,500 lb trailer axle applications where the hub face, brake flange spacing, spindle style, tube diameter, and installation measurements match.
Trailer / System Fit: Common replacement style for cargo trailers, utility trailers, and similar light-duty trailer running gear setups using a 3,500 lb axle beam.
Installation Notes: Verify hub face, spring center, spindle end-to-end measurement, brake flange spacing, tube diameter, and perch setup before installation.
Performance Insight: Straight cambered axles maintain standard trailer ride height, while hub face measurement controls wheel spacing and trailer track width.
Brand & Fitment Note
Selling Brand: Lippert axle beam sold by R&P Carriages.
Application Reference: Trailer, axle, hub, spindle, and brake references in this listing describe compatibility, fitment target, or application style only where supported by verified dimensions and configuration details.
What This Means: This listing is for a Lippert 3,500 lb trailer axle beam with the measurements and configuration shown in this listing.
Before Ordering: Verify hub face, spring center, tube diameter, brake flange spacing, spindle style, axle capacity, and included components before installation.
R&P Repair Insight
Most axle-ordering mistakes come from measuring the wrong points or assuming a similar axle will fit because the capacity is the same. Capacity matters, but axle width, spring center, tube diameter, and spindle configuration matter just as much.
- Match the Hub Face: Hub face is measured from the wheel-mounting surface on one hub to the wheel-mounting surface on the opposite hub.
- Confirm Spring Center: Spring center is measured center-to-center between the trailer leaf springs or existing spring seats.
- Check Brake Compatibility: Confirm the brake flange setup and spindle style before transferring or ordering hubs, drums, brakes, bearings, and seals.
Features
3,500 lb Axle Beam Capacity
Built for compatible 3,500 lb trailer running gear applications where the trailer specifications and measurements match.
86.5" Hub Face Width
Hub face measurement helps determine wheel spacing, trailer track width, and correct replacement fit.
3" Heavy-Duty Tube
Configured with a 3" axle tube for this specific replacement setup.
EZ Lube Spindle Configuration
EZ Lube spindle style supports service access for compatible hub and bearing setups.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 3500-865-3-KIT |
| Brand | Lippert |
| Product Type | Trailer axle beam |
| Axle Capacity | 3,500 lb |
| Hub Face | 86.5" |
| Tube Diameter | 3" heavy-duty tube |
| Axle Style | Straight cambered axle beam |
| Spindle Style | EZ Lube |
| Brake Flange to Flange | 80.16" |
| Spindle End to End | 90.88" |
Fitment / Application
| Category | Details |
|---|---|
| Trailer System | Compatible 3,500 lb trailer running gear applications |
| Primary Fit | Trailers requiring an 86.5" hub face axle beam with 3" tube and EZ Lube spindle setup |
| Common Trailer Types | Cargo trailers, utility trailers, and similar light-duty trailer axle replacement applications |
| Notes | Verify hub face, spring center, brake flange spacing, spindle style, tube diameter, capacity, and perch setup before ordering or installing. |
Included Components
| Quantity | Item |
|---|---|
| 1 | Lippert 3500 lb bare trailer axle beam, 86.5" hub face, 3" heavy-duty tube, straight cambered, EZ Lube spindle configuration |
| Included with -KIT | Loose spring perches / spring seats for weld-on installation |
| Not Included | Hubs, drums, brakes, bearings, seals, lug nuts, U-bolts, plates, leaf springs, and additional mounting hardware unless separately shown or ordered |
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.
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.
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.
