Customizable JINSHENG Unbrake Axle | Optional ABS & Custom Wheelbase/Track Length

Product Overview

The JINSHENG unbrake axle is a non-braking trailer axle from the Uncontrolled Vehicle Bridge Series — the axle you fit when the trailer runs without its own brake system. Standard ratings cover 11, 12, 13 and 14 tonnes, and the beam is precision cast and machined from high-grade steel so the spindle, hub seat and spring pads stay true under load.

With no brake assembly, there is no chamber, slack adjuster, lining or drum to inspect, adjust or replace, and the wheel end stays a plain hub on a spindle. For utility trailers, boat trailers, caravans and farm equipment that is usually the right trade: simpler running gear, fewer parts to hold in stock, and nothing on the axle that quietly goes out of adjustment between services.

It is a custom trailer axle with optional ABS and adjustable track length rather than a catalogue size. Track length, wheelbase and capacity are fixed per order: send the numbers off the trailer it will sit under — hub face to hub face for track, spring centre to spring centre for wheelbase, plus the beam section and wheel pattern — and the unit is built to those figures.

It works as a replacement part as well as a new-build item. Where an older axle has bent, worn a spindle or been damaged, a unit built to the same mounting dimensions returns the trailer to service without touching springs, wheels or mudguards.

We supply it as a custom axle manufacturer working with long-established axle production partners, so a non-standard track, a heavier rating or a run of identical axles is a normal order rather than a special project. Trailer builders, repair workshops and parts distributors order against a drawing, or against the numbers taken off the axle being replaced. An anti-lock braking system can be added as an option for enhanced safety and stability.

Axle Beam & Surface Protection

The beam is a high-grade steel tube, precision cast and machined to its finished section. The section is chosen with the capacity and the shape of the spring seat rather than for looks, and machining after casting keeps the spindle, hub seat and spring pads true to one another. That alignment is what protects the bearings through years of loaded running, and misalignment there is the usual cause of a short bearing life.

Two finishes are offered, both for corrosion and wear resistance. Powder coating lays a hard, even skin over the beam and hubs; it takes road salt, stone chips and the knocks of yard work, and it is the usual pick for trailers that run on road and get washed down now and then. Galvanizing bonds a zinc layer to the steel, so protection carries on at the edge of a scratch instead of stopping there — the finish to choose where the trailer meets fertiliser, slurry, salt water or coastal air, or where the axle stands outside between jobs.

Say where the trailer works when you order. A utility trailer on tarmac and a farm trailer in a wet yard do not need the same coating, and choosing at build stage costs a good deal less than re-coating an axle that is already under the trailer.

The finish is worth protecting during fitting, too. Lift with a sling rather than a chain, leave the spindle taped until the hub goes on, and touch up any chip on a coated beam before the trailer goes back into service.

Track Length, Wheelbase & ABS Options

• Specified per trailer – Each order is a custom trailer axle with optional ABS and adjustable track length: track, wheelbase and capacity are fixed to your drawing before production starts, so no adapter plates, re-drilled hubs or modified spring seats are needed at fitting. - Track length – Standard track follows the capacity rating; other lengths are built to order. Measure hub face to hub face on the trailer itself if the chassis has ever been repaired. - Wheelbase – Set to your spring centres. A replacement keeps the wheelbase of the unit it replaces; a new build can have it laid out around the deck and the load position instead. - ABS, when it is wanted – The anti-lock system is an option and is included in the build when the trailer will run with it. Say so at quotation stage; the hub is prepared for the sensor while the axle is being made. - A repeatable specification – Because every unit is a customizable unbrake axle built to one drawing, a second batch matches the first and spare axles stay interchangeable across a fleet. One sheet is enough for us to confirm the build. Easy installation with a user-friendly design, compatible with multiple vehicle types and no complex tools needed.

Applications

• Utility and light-duty trailers – flatbeds, box trailers and general site units where the towing vehicle's braking does the work and the axle carries a steady, moderate load. Simple running gear, simple service.
• Boat trailers – launching and recovery take the wheel end in and out of salt water. Galvanizing is the usual finish here, and the axle stays easy to rinse and inspect after a launch because there is no brake hardware hanging off it.
• Caravans and small recreational vehicles – low towed mass and long idle periods; a non-braking trailer axle keeps the running gear light and the maintenance list short.
• Agricultural equipment – farm trailers, harvesters and grain carts run slowly with heavy point loads and often stand outside for months at a time. Capacity and finish carry that duty rather than brake hardware.
• Light transport and special-purpose vehicles – mobile workshops, generator and compressor trailers, lighting towers; each one can be built as a customizable unbrake axle to the deck height and body layout it has to sit under.
• Replacement and refurbishment – for a trailer whose original axle is no longer obtainable, or a yard where several trailers share one replacement size; the drawing stays on file, so the second and third unit are straightforward.

Specifications

Fitting and Maintenance

1. Check the unit against the drawing you approved before it is lifted — track, wheelbase, P.C.D, wheel pattern and beam section — and turn the hub by hand to confirm it runs free.
2. Support the trailer on stands and offer the axle up to the spring seats. A sling or a two-person lift is enough; with no brake chamber or air line to align, the axle goes in as a single part.
3. Drop the spring centre bolts into the seat holes, fit the U-bolts and hand-tighten only, so the axle can still be squared to the chassis centreline.
4. Square the axle to the trailer, then torque the U-bolts and the wheel studs to the figures for your trailer; the stud pattern takes standard truck-pattern tooling.
5. Fit the wheels and check clearance to the frame, mudguards and suspension through the full travel before the trailer returns to service.
6. Re-check U-bolt and wheel-stud torque after the first loaded run, then at the intervals your maintenance schedule sets. It is the check most often missed and the one that loosens a wheel end fastest.
7. Routine inspection is visual: a scored spindle, a weeping seal, or play when the wheel is rocked top to bottom. With no brake assembly there is no lining wear to measure and no adjuster to set, which is what keeps the service interval long.
8. Store a spare axle upright on its beam rather than on the spindle, and keep the hub covered until it is fitted.

Ordering and Delivery

1. Send the specification for your trailer axle — the drawing, or the numbers from the unit being replaced — plus the wheel pattern and any optional equipment you want included. As a custom axle manufacturer we build to a drawing, so the clearer the detail, the faster the quotation is ready.
2. We confirm the configuration, price and lead time — normally 15-25 days depending on customization and quantity.
3. Production runs against the approved drawing, and each unit is inspected before it is packed.
4. Packing is standard export protection for heavy steel: anti-rust coating, stretch film wrap, and a steel pallet or wooden crate for sea freight. Units are shipped in robust wooden export cases to ensure product integrity during transit.
5. Shipping is by FCL or LCL from Ningbo or Shanghai, and air freight can be used for urgent samples — tell us the destination port and the order size and we quote the routing that fits.
6. Documents with every shipment: commercial invoice, packing list, bill of lading and quality certificate.
7. Warranty and after-sales terms are set per order — confirm the current terms with your sales contact when the order is placed.

Technical Support & Model Matching

Specification questions should not hold up an order. Send us your drawing, load rating and mounting dimensions, and our team will confirm the right model and configuration, cross-check it against the unit it will go on, and flag anything that needs changing before the order is released to our manufacturing partners. After delivery we stay involved: fitting and commissioning guidance, fault diagnosis, spare-part identification, and customisation coordinated with those long-term partners. Every enquiry is answered within 24 hours, and clear warranty terms sit behind the supply.

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