Trailer Jockey Wheel with 200 × 50 mm Rubber Wheel | LF-J7-1

What the Current LF-J7-1 Specification Actually States

200 kg and 300 lb Must Not Be Treated as Equivalent Ratings

The LF-J7-1 data contains both values, but 200 kg and 300 lb do not represent the same mass. The current page therefore preserves both published fields without converting one into the other.

Before capacity approval, confirm whether the two values refer to different operating modes, different test/rating bases, or a legacy data inconsistency.

Use the Range as Published Until the Production Drawing Defines the Nominal Stroke

The current specification gives a 230–240 mm travel range. It should not be silently simplified to 235 mm, nor should the 10 mm spread be called a manufacturing tolerance without supporting documentation.

For replacement or OEM integration, verify the current nominal travel and the corresponding retracted/extended measurement references on the LF-J7-1 drawing.

Rubber Wheel and Metal Rim Are Known; Rim Alloy and Tyre Construction Are Not

The wheel dimension is a useful fit parameter: 200 mm diameter and 50 mm width. The product source also explicitly specifies a rubber wheel and metal rim.

The current verified data does not establish whether the tyre is solid or pneumatic, whether the rim is steel or aluminum, or what bore, bearing and axle dimensions apply. Those details belong in the current drawing or wheel specification.

Zinc-Plated Outer Tube and Clear-Zinc Inner Tube

The verified specification is component-specific: zinc plated outer tube and clear-zinc inner tube. That wording does not by itself prove hot-dip galvanizing, coating thickness, salt-spray duration or marine certification.

GOODIN’sCorrosion-Resistant Marine Trailer Hardware Buying Guide directly discusses LF-J7-1 and explains why the actual coating process and acceptance requirement should be confirmed instead of relying on a broad “galvanised” label.

Useful for Packaging and Handling—Not a Substitute for Structural Data

The 4.05 kg net weight is useful for logistics and component comparison, but it does not establish tube wall thickness, mounting strength or the allowable load on the wheel while manoeuvring.

Resolve Capacity Basis, Mounting and Installed Height Before Final Approval

Current published data is sufficient to specify the wheel envelope, travel range, tube finishes and net weight. The capacity basis, handle style, tube diameter, mounting interface, wheel bore/bearing details and installed height limits still need model-specific confirmation.

Questions to Resolve Before Ordering LF-J7-1

Production Visibility for OEM and Distributor Buyers

Trailer-Front Support and Local Positioning with a 200 × 50 mm Wheel

LF-J7-1 belongs to GOODIN’s jockey-wheel / boat-trailer-support family and provides a 200 × 50 mm wheel envelope with 230–240 mm published adjustment travel.

Application approval should begin with the actual vertical load at the jockey-wheel position and confirmation of which published LF-J7-1 capacity field applies to the intended operating mode.

Confirm Which Capacity Applies Before Support or Manoeuvring Approval

The current product data contains both 200 kg and 300 lb capacity fields. Because the values are not equivalent and no operating basis is attached to them, the application cannot safely assign one to static support and the other to rolling movement without engineering confirmation.

Use 200 mm Diameter and 50 mm Width as the Known Contact Envelope

The wheel size can be compared with the intended floor, ramp or yard surface, but wheel dimensions alone do not establish rolling resistance, slope capability or allowable manoeuvring load.

230–240 mm of Travel Still Requires the Real Installed Height Range

Use the travel range to screen required adjustment, then confirm the actual retracted and extended installed positions. Travel by itself does not define coupler height, ground clearance or storage clearance.

Confirm Tube and Mounting Dimensions Instead of Assuming a Common Clamp Size

Current LF-J7-1 data does not publish tube diameter, clamp size, bracket geometry or supplied fasteners. A 200 × 50 mm wheel is common across several jockey-wheel constructions, so wheel size should not be used to infer the mounting interface.

Inspect the Jockey Wheel as Part of the Complete Trailer Front End

For trailers exposed to water, road spray or repeated outdoor storage, inspect the tube surfaces, wheel assembly and mounting area together with other front-end hardware rather than treating the jockey wheel as an isolated item.

GOODIN’s Trailer Hub & Bearing Overheating Guide specifically includes LF-J7-1 in its broader front-end hardware inspection context alongside jacks, winches and coupler hardware.

Compare LF-J7-1 with the Required Trailer-Front Support Configuration

GOODIN’s Boat Trailer Jack range includes wheeled and other trailer-front support configurations. Use the actual load, wheel surface, travel, mounting and environmental requirements to determine whether LF-J7-1 is the correct configuration.

What to Send with an LF-J7-1 RFQ

Provide the actual support load, required static/manoeuvring rating basis, trailer drawbar/frame geometry, required mount, minimum and maximum support positions, ground surface, exposure environment, quantity and destination market.