YD40 Series Standard Ball Mounts (Standard Ball Mounts Series YD40-001~009) Webpage Detail Page (English)

I. Product Specifications (SPECIFICATION)

1. Core Parameter Summary Table

2. Model Group Comparison Table

II. Product Details (PRODUCT DETAILS)

1. All-Scenario Universality + Graded Design, Unlimited Adaptation

(1) 2" Receiver Universality, Cross-Vehicle Compatibility

• The entire series is compatible with industry-standard 2" square receivers, matching mainstream household SUVs and pickup trucks such as Ford F-150, Toyota Tundra, and Great Wall Poer. No separate purchase is required for different vehicle models (ordinary ball mounts are mostly only compatible with receivers of specific brands);
• The reasonable insertion depth (≥80mm), combined with pin locking, eliminates the risk of "axial movement" during high-speed towing, with stability far exceeding that of low-cost ball mounts with "insertion depth less than 50mm".

(2) Graded Load-Bearing and Structure, Precise Demand Matching

• Light-Duty Solid Group (3,500 LBS): The solid shank has a shear strength of ≥400MPa, compatible with household trailers under 800kg such as mini camping trailers and children's toy trailers, avoiding resource waste caused by "heavy-load ball mounts towing small trailers";
• Medium-Duty Hollow Group (6,000 LBS): The 1" large ball hole diameter is compatible with heavy-duty balls, and the hollow shank is lightweight (1.5kg lighter than solid shanks of the same load-bearing), suitable for commercial cargo trailers under 2.7 tons, balancing heavy-load performance and installation convenience;
• Medium-Heavy-Duty Hollow Group (5,000 LBS): Larger horizontal/vertical dimensions (e.g., 8" horizontal dimension of YD40-009) are compatible with medium-duty trailers requiring large installation space, such as outdoor equipment trailers loaded with mountain bikes.

2. Durable Material + Enhanced Protection, Rugged and Easy to Maintain

(1) High-Strength Base Material + Quenched Hole Wall, Long Durability

• The body of the light-duty group is made of high-strength carbon steel through integral stamping, with no false welds. In the 3,500 LBS full-load towing test, the body bending is ≤0.2mm, far exceeding the shortcoming of "ordinary carbon steel welded ball mounts deforming at 3,000 LBS";
• The medium/medium-heavy-duty groups are upgraded to alloy steel with a tensile strength of 500MPa, with no cracking risk during 6,000 LBS heavy-load towing; the ball hole walls are high-frequency quenched, and the hole diameter wear is ≤0.1mm after long-term ball insertion/removal, avoiding "ball loosening caused by enlarged hole diameter".

(2) Black Coating Protection, Adapting to Complex Environments

• The surface black powder coating is cured at high temperature, with strong adhesion (no peeling in cross-cut tests), no corrosion in 48-hour salt spray tests, and no rust for 1 year of use in coastal areas;
• The coating is oil-resistant and easy to clean: Engine oil and sand contaminated in cargo transportation scenarios can be cleaned with a high-pressure water gun or a rag, no complex maintenance is required, and maintenance costs are low.

3. Detail Optimization + Humanized Design, Enhanced User Experience

(1) Multi-Size Adaptation, Flexible Response to Different Chassis

• Diversified lengths (7-10 inches): Short length (7 inches, YD40-002) is compatible with low-chassis SUVs to avoid dragging; long length (10 inches, YD40-009) is compatible with high-chassis pickup trucks to ensure precise alignment between the ball and trailer coupler;
• Differentiated horizontal/vertical dimensions: For example, the 3-7/8" vertical dimension of YD40-003 is compatible with trailers requiring high installation positions, avoiding collisions with vehicle chassis components.

(2) Lightweight + No Accessory Restrictions, Easy Installation

• Hollow shank design (004-009): 20% lighter than solid shanks, allowing single-person insertion into the receiver without assistance;
• No mandatory accessory bundling: Users can select compatible accessories based on existing balls and pins, no need to purchase sets additionally, reducing procurement costs (ordinary brands mostly force accessory bundling with low cost-effectiveness).

III. Application Scenarios (APPLICATION SCENARIOS)

1. Towing of Household Light Camping Trailers (Core Scenario: YD40-002)

1. Model Selection and Installation:
   - The trailer weighs 1,200 LBS with a 3/4" ball, and the SUV has a low chassis, so YD40-002 (7" short length + 3,500 LBS load-bearing, compatible with low chassis) is selected;
   - Installation: A single person inserts the ball mount into the receiver, locks it with a 10mm pin, and installs the 3/4" ball (torque 42N·m), taking 15 minutes;
   2. Camping Towing Experience:
   - Stability Performance: At a high-speed driving speed of 100km/h, the ball mount shows no vibration and the trailer has no left-right deviation; no "metal collision noise" on bumpy rural dirt roads;
   - Anti-Corrosion and Cleaning: After rainy camping, there is no rust from rainwater residue on the black coating, which can be cleaned with a dry cloth;
   - Convenience: It can be removed by pulling out the pin when not in use, and stored in the trunk without occupying space;
   3. Advantage Performance:
   - The 7" short length is compatible with the SUV's low chassis to avoid dragging;
   - The solid shank has strong shear resistance, with sufficient safety margin for household scenarios.
   Result: The towing safety and convenience of the household camping trailer are improved, with no adaptation problems or corrosion issues, fully adapting to household leisure scenarios.

2. Transportation of Commercial Small Cargo Trailers (Scenario 2: YD40-005)

1. Model Selection and Installation:
   - The trailer weighs 3,300 LBS with a 1" ball, so YD40-005 (6,000 LBS load-bearing + 1" ball hole diameter, compatible with heavy-load) is selected;
   - Installation: Lock the ball mount with a 12mm pin, install the 1" heavy-duty ball (torque 45N·m), and conduct a 5km no-load towing test after installation to confirm no loosening;
   2. Cargo Transportation Performance:
   - Heavy-Load Resistance: Transporting a full load of 1.5 tons of home appliances daily, the ball mount shows no deformation, the ball remains tight, and the body has no weld cracking;
   - Oil Resistance and Cleaning: Engine oil contaminated during transportation can be wiped clean with a rag dipped in dish soap, with no residue on the black coating;
   - Efficiency Advantage: Compatible with multiple Great Wall Poer pickup trucks of the company, no need to purchase separately for each vehicle, saving 50% of procurement costs;
   3. Commercial Advantages:
   - 6,000 LBS load-bearing meets small cargo transportation needs, with sufficient safety margin;
   - The hollow shank is lightweight, facilitating loading and unloading and reducing the driver's labor intensity.
   Result: The cargo transportation efficiency is increased by 25%, and the ball mount failure rate is reduced from once a month to zero, fully adapting to high-frequency commercial scenarios.

3. Towing of Outdoor Equipment Trailers (Scenario 3: YD40-008)

1. Model Selection and Installation:
   - The pickup truck has a high chassis, and the trailer requires large installation space, so YD40-008 (6" horizontal dimension + 9-1/2" length, compatible with high chassis) is selected;
   - Installation: Insert the ball mount into the receiver and lock it, install the 1" ball, and adjust the alignment between the ball and the trailer coupler, taking 20 minutes;
   2. Off-Road Use Performance:
   - Adaptability: The 9-1/2" length is precisely compatible with the pickup truck's high chassis, no dragging on gravel roads, and no component collision when climbing steep slopes;
   - Scratch Resistance: The ball mount is hit by gravel, with only slight scratches on the black coating and no base material exposure or rust;
   - Stability: During off-road bumps, the pin is locked firmly, the ball mount has no movement, and the equipment trailer has no tilting;
   3. Outdoor Advantages:
   - The large-size design is compatible with off-road scenarios, avoiding terrain restrictions;
   - The scratch-resistant coating is compatible with complex road conditions, reducing maintenance frequency.
   Result: The transportation safety of outdoor equipment is improved, with no adaptation problems or scratch damage, fully adapting to off-road leisure scenarios.

IV. Frequently Asked Questions (FAQ)

Q1: There is a "squeaking" noise between the ball and the ball mount during towing after installation. What is the reason?

1. Confirm Ball-Hole Compatibility: If a 3/4" ball is installed on a ball mount with a 1" hole (e.g., YD40-004), noise will occur due to excessive gap — immediately replace it with a 1" compatible ball, or install an adapter gasket (thickness 1-2mm) between the ball and the hole wall to reduce the gap to ≤0.1mm;
2. Tighten Ball Bolts: Insufficient bolt torque (<40N·m) will cause ball loosening and noise — retighten to the standard torque of 40-45N·m with a torque wrench, and it is recommended to apply thread locker (e.g., Loctite 243) to prevent bolt loosening during driving;
3. Clean Ball and Hole Wall: Oil and dust accumulation will increase friction noise — clean the ball and hole wall with a cleaning agent, apply a small amount of silicone-based grease (do not use engine oil) after drying, and reduce friction noise.

Q2: After long-term use, the hollow-shank ball mount (e.g., YD40-005) shows slight deformation. Can it still be used?

1. Slight Deformation (bending ≤0.3mm): Only suitable for light-load scenarios below 50% of the rated load (e.g., YD40-005 with a rated load of 6,000 LBS can only tow trailers ≤3,000 LBS). Heavy-load use is prohibited, and the deformation should be checked every 50km of towing;
2. Obvious Deformation (bending >0.3mm or cracks): Stop using immediately and replace with a new ball mount — the shear strength of the deformed body will decrease by more than 50%, and continued use may cause breakage and safety accidents;
3. Preventive Suggestions: Avoid long-term overloaded towing (not exceeding 80% of the rated load), reduce driving speed on off-road or bumpy roads, reduce impact on the shank, and extend service life.

Q3: How to select the correct YD40 series model based on trailer and vehicle parameters?

1. Confirm Trailer Weight:
   - Weight ≤1,500 LBS (Light-Duty): Select YD40-001~003 (3,500 LBS load-bearing, sufficient safety margin);
   - 1,500 LBS ＜ Weight ≤2,700 LBS (Medium-Duty): Select YD40-004~006 (6,000 LBS load-bearing, compatible with heavy-load);
   - Weight ＞2,700 LBS but ≤2,268kg (Medium-Heavy-Duty): Select YD40-007~009 (5,000 LBS load-bearing, compatible with large-size installation needs);
2. Confirm Ball Size:
   - 3/4" ball: Only select YD40-001~003;
   - 1" ball: Only select YD40-004~009;
   - Other sizes: The corresponding ball needs to be replaced; forced compatibility is not allowed;
3. Confirm Vehicle Chassis Height:
   - Low chassis (ground clearance <200mm): Select short-length models (e.g., YD40-002, 7 inches);
   - High chassis (ground clearance >250mm): Select long-length models (e.g., YD40-009, 10 inches).

Q4: Rust appears on the ball mount coating when used in coastal areas. How to handle and prevent it?

1. Rust Treatment:
   - Minor Rust: Gently polish the rust with 1000-grit fine sandpaper (avoid scratching the coating) until the metal color is exposed. Then evenly apply black touch-up paint of the same color (matching model available from the merchant) and air-dry for 24 hours;
   - Severe Rust (rust area >10%): If the base material is rusted, it is recommended to replace with a new ball mount to avoid affecting load-bearing performance;
2. Preventive Maintenance:
   - Regular Cleaning: Rinse the salt on the ball mount surface with fresh water every 2 weeks and dry with a dry cloth to avoid salt residue;
   - Enhanced Protection: Apply a layer of industrial anti-rust wax (salt spray-resistant type) to the coating surface every month to enhance corrosion resistance;
   - Storage Protection: Remove the ball mount when not in use and store it in a dry garage to avoid outdoor rain and sun exposure.