Product Specification

YD37-001 Trailer Dolly (Trailer Dolly YD37-001) Webpage Detail Page (English)

I. Product Specifications (SPECIFICATION)

1. Core Parameter Summary Table

2. Key Performance Test Table

II. Product Details (PRODUCT DETAILS)

1. High-Strength Structure + Lightweight Design, Labor-Saving and Rugged

(1) Welded Steel Body, Stable Load-Bearing

• Adopts one-piece welded high-strength steel (ordinary dollies are mostly assembled structures). The tensile strength of welds is ≥380MPa, with no cold welding or missing welding. It can stably move small and medium-sized trailers of 1,500 LBS (approx. 680kg) (such as light cargo trailers fully loaded with goods);
• In the test of moving a 1,200 LBS camping trailer, the body shows no obvious bending (deformation ≤0.3mm), far exceeding the shortcoming of "ordinary aluminum alloy dollies deforming at 800 LBS", making it compatible with most household and small commercial trailers.

(2) Hollow Steel Shank + Compact Size, Portable and Easy to Store

• The shank adopts a hollow design, with an overall weight of only 12kg (4kg lighter than solid-shank dollies). Female users can lift it with one hand. When stored, it can stand upright in the corner of a garage or fit into the trunk of an SUV (occupying only 0.3㎡ of space);
• The compact size of 35.43" × 37.40" × 26.38" allows transportation without disassembly, solving the problem of "difficulty in carrying large dollies" and adapting to outdoor camping, cross-regional cargo transportation and other scenarios.

2. Three-Tire Combination + Non-Slip Design, Stable and Flexible

(1) Large-Size Main Tires + Auxiliary Steering Tire, No Movement Resistance

• 2 pieces of 10" main running tires: 100mm wide tread, large ground contact area, no sinking when moving on unpaved roads such as gravel and grass (ordinary 6" small tires are prone to slipping); paired with 1 piece of 6" auxiliary steering tire, which supports 360° flexible steering (steering accuracy up to ±5°), making it easy to adjust the angle when parking the trailer;
• The pneumatic tires use high-airtightness inner tubes, which can maintain air pressure for 2-3 months after inflation, eliminating the need for frequent 补气. The tire rubber has high puncture resistance, so it is not easily punctured on gravel roads.

(2) Cushioned Grip + Snap-Fit Connection, Safe and Comfortable

• Non-slip rubber cushioned grip: With concave-convex patterns on the surface, it does not slip even when stained with oil. The internal sponge filling can absorb 60% of vibration (ordinary plastic grips cause obvious hand soreness), and no discomfort occurs even after 30 minutes of continuous movement;
• Ball snap-fit connection: Automatically locks after engaging with the trailer coupler, with no risk of "ball disconnection" during movement (ordinary dollies require manual screw fixing, which is time-consuming and easy to loosen), increasing safety by 80%.

3. All-Scenario Anti-Corrosion + Detail Optimization, Long Durability

(1) Black Powder Coating, Adapting to Complex Environments

• The body's black powder coating is cured at high temperature, with strong adhesion (no peeling in cross-cut tests). After rainy use, it can be cleaned with a dry cloth without rust residue; when used in coastal areas for 6 months, the coating does not peel and the steel does not corrode, far exceeding the durability of ordinary painted dollies;
• The coating is oil-resistant and easy to clean. If it is contaminated with engine oil or diesel in cargo transportation scenarios, it can be wiped clean with a rag dipped in neutral detergent, maintaining a neat appearance for long-term use.

(2) Upgraded Wear-Resistant Components, Reducing Replacement Frequency

• The ball is chrome-plated (thickness 15μm), with no obvious wear after frequent engagement with the trailer coupler (wear ≤0.1mm after 1 year of use), avoiding the problem of "ordinary steel balls rusting and jamming in 3 months";
• The tires use wear-resistant rubber, with a tread pattern depth of 3mm. When used frequently on cement roads (10 movements per day), the service life can reach more than 1 year, reducing tire replacement costs.

III. Application Scenarios (APPLICATION SCENARIOS)

1. Household Camping Trailer Garage Parking (Core Scenario)

1. Model Adaptation and Preparation:
   - The trailer ball is 1-7/8" and the weight is ≤1,500 LBS, so YD37-001 (black coating for rain resistance, suitable for outdoor scenarios) is selected;
   - Check the tire air pressure (supplement to 2.5bar) and ensure the grip is not loose;
   2. Movement Operation:
   - Connection: Insert the dolly ball into the trailer coupler and rotate to lock (taking 30 seconds), then hold the cushioned grip with both hands;
   - Movement and Steering: Only 8kg of force is needed to move the trailer on the cement road. When approaching the garage entrance, adjust the direction with the 6" auxiliary tire (easily avoiding the wall) and complete parking within 1 minute;
   - Storage: After use, stand the dolly upright in the corner of the garage without occupying the trailer's parking space;
   3. Advantage Performance:
   - No need for assistance, a single person can park the trailer in the garage;
   - The soft tires do not scratch the cement ground, and the cushioned grip causes no hand soreness.
   Result: The parking efficiency of the household camping trailer is improved, with no scratches or labor-intensive issues, fully adapting to household scenarios.

2. Short-Distance Dispatching of Small Cargo Trailers in Logistics Companies (Scenario 2)

1. Model Selection and Installation:
   - The trailer balls are compatible and the weight is suitable, so YD37-001 is purchased in bulk (black coating for oil resistance, suitable for cargo scenarios);
   - Employees can master installation and movement operations after only 10 minutes of training;
   2. Daily Dispatching Performance:
   - Efficiency Improvement: In the past, 2 people needed 5 minutes to move one trailer together; now, 1 person can complete it in 3 minutes with the dolly, saving 1 hour of dispatching time daily;
   - Durability: High-frequency use in the warehouse (moving 150 meters daily), no obvious tire wear after 3 months, only slight scratches on the black coating (no impact on anti-corrosion);
   - Easy Cleaning: If engine oil splatters on the dolly from the trailer, it can be wiped clean with a rag dipped in dish soap, no complex maintenance required;
   3. Commercial Advantages:
   - Reduces labor costs (no need to hire additional dispatch personnel);
   - High durability, no component replacement needed for 1 year, reducing operating costs.
   Result: The dispatching efficiency of cargo trailers is increased by 40%, and labor costs are reduced by 30%, fully adapting to small commercial scenarios.

3. Outdoor Campsite Trailer Positioning (Scenario 3)

1. Model Selection and Preparation:
   - The campsite road surface is complex, so YD37-001 is selected (10" large tires for anti-sinking, suitable for unpaved roads);
   - Check the tire inflation status before departure and carry a small air pump (for backup);
   2. Outdoor Movement Operation:
   - Anti-Sinking Performance: The 10" main tires have a large ground contact area, no sinking when moving on grass and gravel roads, and the movement force is approx. 9kg (easy for the user to operate);
   - Positioning Accuracy: Adjust the angle with the auxiliary steering tire to accurately park the trailer at the campsite (deviation ≤10cm) without repeated adjustments;
   - Durability: No tire puncture or black coating scratch during movement on gravel roads;
   3. Outdoor Advantages:
   - Lightweight design (12kg) can be carried with the SUV without occupying much luggage space;
   - Strong adaptability to complex roads, solving the pain point of "ordinary dollies being difficult to use outdoors".
   Result: The positioning convenience of the outdoor camping trailer is improved, with no sinking or damage issues, adapting to outdoor leisure scenarios.

IV. Frequently Asked Questions (FAQ)

Q1: The tires slip significantly during movement. What is the reason?

1. Check Tire Air Pressure: Too low air pressure (<2.0bar) will increase the tire's ground contact area and cause slipping — measure with a tire pressure gauge and inflate to 2.5bar (standard air pressure), and the slipping will disappear after the air pressure is normal; if the air pressure is too high (>3.0bar), the tire's ground contact area is small and grip decreases, so deflate to the standard value;
2. Clean Road Debris: Debris such as gravel and leaves on the road will reduce tire friction — clean the debris (especially gravel and oil) on the movement path with a broom, or place a non-slip mat (such as a rubber mat) under the tires to enhance grip;
3. Adjust Movement Angle: A large deviation (>15°) between the movement direction and the trailer's central axis will cause the tires to bear lateral force and slip — adjust the grip direction to keep the dolly in a straight line with the trailer, then push slowly.

Q2: After long-term use, the ball connection is jammed and cannot be smoothly inserted into the coupler. How to handle it?

1. Clean the Ball and Coupler: Rust on the ball surface and dust in the coupler will cause jamming — gently polish the ball rust with fine sandpaper (800 grit) (avoid scratching the chrome layer), then clean the dust and oil in the coupler with a brush, and finally apply a small amount of silicone-based grease (do not use engine oil, which is prone to dust adhesion);
2. Check Ball Wear: If the ball is severely worn (diameter reduced by >0.5mm), the gap with the coupler will be too large, causing jamming during insertion — measure the ball diameter. If the wear exceeds the standard, contact the merchant to replace the 1-7/8" standard ball (accessories can be purchased separately);
3. Preventive Maintenance: Wipe the ball surface with a dry cloth after each use, and apply grease once a month to avoid rust and jamming.

Q3: How to confirm if my trailer is compatible with YD37-001?

1. Confirm Ball Diameter: Measure the ball diameter compatible with the trailer coupler with a caliper; it must be 1-7/8" (approx. 47.6mm). If it is a 2" or 2-5/16" ball, replace with the corresponding ball or select another model of dolly; do not force compatibility;
2. Confirm Trailer Weight: The full-load weight of the trailer must be ≤1,500 LBS (approx. 680kg). If the weight exceeds 1,500 LBS (such as a 2,000 LBS heavy-duty trailer), it will cause overload damage to the dolly, and a dolly with higher load-bearing capacity is required;
3. Confirm Usage Road Surface: This dolly is compatible with conventional road surfaces such as cement, grass, and gravel. For extreme road surfaces such as mud and ice (with minimal friction), non-slip chains must be used to avoid slipping;

• Example: A trailer with a 1-7/8" ball, weight of 800kg, and used on cement roads is directly compatible with YD37-001.

Q4: How to properly store the dolly after use? What should be noted for long-term storage?

1. Daily Storage Steps:
   - Cleaning: Wipe the body dust and oil with a dry cloth; if there is rainwater residue, dry it (to avoid coating rust);
   - Positioning: Stand the dolly upright in a dry, ventilated corner (such as a garage or storage room) to avoid tipping (it can be placed against the wall with a rubber mat under the bottom to prevent slipping);
   - Tire Protection: If not used for a long time (>1 month), deflate the tires to 1.5bar (to avoid tire deformation due to long-term pressure);
2. Long-Term Storage Notes:
   - Environment Selection: Avoid storage in humid, salt spray environments (such as coastal warehouses). Desiccants (such as silica gel packs) can be placed next to the dolly to prevent coating corrosion;
   - Regular Inspection: Check the tire status (for air leakage) and whether the coating is peeling every 3 months. If problems are found, handle them in time (such as repainting and inflating);
   - Component Maintenance: Rotate the auxiliary steering tire to ensure flexible steering. If there is jamming, drop 1 drop of lubricating oil (such as sewing machine oil) on the bearing.