Replacement Wheel Bearings for Henschen Dura Flex 3.5K Axles
Products Featured in This Question
Question:
Hello, I have a tandem axle boat trailer with Henschen Dura Flex 3500# axles. One axle has drum brakes. I am wanting to replace the bearings and brakes w\ backing plates. Do you have a cross reference on these axles? Thanks, Billy 405-426-7883
asked by: Billy M
Expert Reply:
Henschen has been out of business for about 12 years, so I wasn't able to find much information about your axles online.
From what I saw in the forums, they used a standard spindle for a 3.5K axle, so it should use a L44649 outer and a L68149 inner bearing. The grease seal should be a standard 10-19 double lip seal.
You can confirm this by checking the cages on your wheel bearings which should have the reference numbers mentioned above etched on them. If you can't find reference numbers, you can measure the inside diameter of the inner and outer bearing using a digital caliper like part # PTW80157. The L44649 has an ID of 1.063 inches, the L68149 has an ID of 1.378.
To confirm the grease seal, the ID of the hub bore where the grease seal sits should be 2.565 inches, and the journal surface of the spindle where the seal rides should be about 1.72 inches.
If your measurements confirm what's listed above, you'd use the # BK2-100 bearing kit, which includes the L44649 and L68149 bearings, their compatible races, a 10-19 grease seal, a cotter pin and a tang washer.
In the unlikely event that you get different measurements, please reply and let me know the ID of your inner and outer bearing, the hub bore diameter where the seal sits and the diameter of the surface of the spindle where the seal rides and I'll look for the proper replacements.

Product Page this Question was Asked From
etrailer Rubber Hitch Cover for 2" Trailer Hitches - Qty 1
- Hitch Covers
- Misc Covers
- Plain
- Rubber
- Fits 2 Inch Hitch
- Standard
- Square
- etrailer
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Master Lock Trigger Style Coupler Lock for 1-7/8" and 2" Couplers
- Shop: MaxxTow Trailer Coupler Latch Lock - 7/8" Span - 1/4" Diameter - Black Steel
- Shop: Windshield Wiper Blades
- Shop: Vehicle Tow Bar Brake System
- Q&A: Tuson 1A0650 Replacement Motor
- Search Results: b
- Shop: Trailer Hitch
- Shop: Buyers Combination Pintle Hook with 50 mm Ball - 2" Hitches - 12,000 lbs
- Search Results: pmhd14002
- Search Results: coupler lock
- Search Results: pintle hook mounting plate
- Search Results: 48200
- Shop: Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Wireless Monitoring - Proportional
- Shop: Wiper Technologies Vented Windshield Wiper Blade - Frame Style - 40" - Qty 1
- Shop: PullRite ISR Series SuperGlide 14K Fifth-Wheel Hitch - Auto Sliding - 22-3/4" Travel
- Shop: Aluminum AM03 Series Gunmetal Gray Machined Trailer Wheel - 15" x 5" Rim - 5 on 4-1/2
- Search Results: airlift wireless
- Search Results: center wheel caps wheel covers hubcaps
- Q&A: How do You Determine If a Trailer Brake Magnet is Worn Out
- Q&A: Where Is the Brake Controller Plug On a 2021 Ford F-150
- Q&A: Can 205/65-10 Tires be Upgraded to a Larger Size For Greater Ground Clearance
- Video: Remove, Inspect, and Reinstall Trailer Bearings, Race, and Seals Demonstration
- Video: Feature Breakdown: Electric Trailer Brake Assembly
- Q&A: How to Find Replacement Bearings and Grease Seal for 1990's Shoreline Boat Trailer
- Video: Dexter Trailer Idler Axle w/ Idler Hubs Spec Review
- Video: Timken Bearing Kit Installation - Enclosed Trailer
- Q&A: Torque Spec for Axle Nut and Lug Nuts
- Q&A: Replacement Hub/Drum that Could Fit Henschen Duraflex 5,000 lb Axle
Korby H.
7/25/2024
Mike, I have the same axles on my boat trailer. The Henschen Dura Flex 3500# axles. Mine are at the time of this email 23 years old. Given the design of this type of axle over time the swing arms will begin to sag. Is the a way to determine when it’s time to replace the axles? Is there an equivalent axle if a person wishes to just replace them?