Product Specification

YD38 Series Trailer Jack (Trailer Jack Series YD38-001~008) Webpage Detail Page (English)

I. Product Specifications (SPECIFICATION)

1. Core Parameter Summary Table

2. Model Group Comparison Table

II. Product Details (PRODUCT DETAILS)

1. Multi-Dimensional Graded Design, Covering from Light-Duty to Heavy-Duty

(1) Graded Travel, Adapting to Different Height Needs

• Short-travel models (10", 001/002): Designed for low-chassis trailers (e.g., mini camping trailers), stable support can be achieved without excessive lifting, avoiding the instability caused by "long-travel jacks with too short lifting";
• Dual-travel models (10"/15", 003-006): 10" short travel for daily parking (fast and convenient), 15" long travel for maintenance (sufficient lifting height to remove tires), serving multiple purposes and adapting to multiple scenarios;
• Combined-travel models (15"+13", 007/008): Total travel up to 711mm, specially designed for high-chassis heavy-duty trailers (e.g., engineering trailers). The main travel enables rapid lifting, and the secondary travel allows precise fine-tuning, solving the pain point of "high-height heavy-duty trailers being difficult to adjust".

(2) Graded Capacity, No Overload Risks

• Light-Duty Group (1,000-1,500 LBS): Adopts carbon steel body, suitable for household small trailers. The body bending is ≤0.3mm during lifting, far exceeding the shortcoming of "ordinary jacks deforming at 800 LBS";
• Heavy-Duty Group (5,000-8,000 LBS): Upgraded to alloy steel forged body with a tensile strength of 450MPa. During the 8,000 LBS (approx. 3.6 tons) heavy-load test, the base shows no collapse and the support rod no bending, with better support stability than similar products.

2. Reinforced Structure + Enhanced Protection, Durable and Rugged

(1) Stable Structure, Safer Anti-Tilting

• Wheeled models with dual-wheel design (002): 6" dual wheels are symmetrically distributed, with a ground contact area 60% larger than that of single-wheel models. No tilting risk when supporting on slightly inclined ground (slope ≤5°) (ordinary single-wheel models are prone to tilting in the same scenario);
• Wheel-free models with thickened base (003-008): The base has a diameter of 200mm and a thickness of 10mm, with a ground contact area of 314cm², dispersing pressure (pressure ≤0.1MPa) to avoid sinking into soft ground such as grass and mud.

(2) Dual-Coating Protection, Adapting to Complex Environments

• Zinc plating (001/002): Hot-dip galvanizing process, zinc layer thickness ≥80μm, no rust for 2 years of use in dry environments, meeting light household needs;
• Zinc plating + black coating (003-008): First galvanized for rust prevention, then sprayed with epoxy resin black coating (thickness 25μm), no corrosion in 48-hour salt spray tests, no rust for 1 year of use in coastal areas and rainy weather; the coating is scratch-resistant (hardness HV200) and does not peel off when collided during handling.

3. Humanized Design + Detail Optimization, Enhanced User Experience

(1) Multi-Scenario Adaptable Handles, Easy Operation

• Side handles (001-003/005/007): 300mm long, with non-slip rubber wrapped around the grip area. No need to bend over during standing operation (suitable for long-term maintenance), and the turning resistance is ≤30N (easy to operate for women);
• Top handles (004/006/008): Foldable (length reduced by 50% after folding), easy to turn in narrow spaces (e.g., small gap between the trailer bottom and the ground), avoiding obstruction by side obstacles.

(2) Safety Locking + Clear Markings, Intimate and Practical

• Handle buckles as standard for some models (003/007): After reaching the support position, fasten the buckle to prevent the support rod from "accidental dropping" (ordinary jacks have no locking and are prone to sliding down due to vibration);
• Travel scale markings (003-008): Clear 10"/15"/13" scales are printed on the support rod, allowing users to quickly determine the lifting height without repeated measurement, improving operation efficiency.

III. Application Scenarios (APPLICATION SCENARIOS)

1. Daily Parking of Household Mini Camping Trailers (Core Scenarios: YD38-001/002)

1. Model Selection and Operation:
   - The trailer weighs 1,000 LBS with a low chassis, so YD38-001 (side handle + 10" travel, suitable for low height) is selected;
   - Operation: Align the jack with the trailer frame crossbeam, stand and turn the side handle (clockwise), complete 10" lifting within 30 seconds, lift the trailer 5mm off the ground, and lock the buckle (if available);
   2. Daily Use Performance:
   - Convenience: A single person can complete support within 1 minute without assistance;
   - Stability: The 6" single wheel fits the flat ground, no trailer tilting in windy weather;
   - Anti-Corrosion: Wipe with a dry cloth after rain, no rust on the zinc layer, service life up to 2 years;
   3. Advantage Performance:
   - Lightweight design (weight only 4kg), can be placed in the trailer storage box for on-demand use;
   - Short travel adapts to low chassis, avoiding instability caused by excessive lifting.
   Result: The parking safety of the household mini trailer is improved, with no tilting or rust issues, fully adapting to daily leisure scenarios.

2. Maintenance Lifting of Medium-Sized Camping RVs (Core Scenarios: YD38-003/004)

1. Model Selection and Operation:
   - The RV weighs 5,000 LBS and requires long-travel lifting + operation in narrow spaces, so YD38-004 (top handle + 10"/15" dual travel, wheel-free for stability) is selected;
   - Operation: First turn the top handle to switch to 15" long travel, lift the RV 150mm off the ground within 5 minutes, fasten the safety buckle, and start tire replacement;
   2. Maintenance Use Performance:
   - Travel Adaptation: 15" long travel meets tire removal needs, no additional padding required;
   - Space Adaptation: The top handle can be folded without occupying side space, no obstruction during operation in the garage;
   - Oil Resistance: The black coating is resistant to engine oil contamination, and can be cleaned with a rag after maintenance with no residue;
   3. Advantage Performance:
   - Dual-travel design caters to both daily parking (10") and maintenance (15"), no need to purchase two jacks;
   - Wheel-free base has strong stability, no RV tilting risk during maintenance.
   Result: The maintenance efficiency of the medium-sized RV is increased by 40%, with no operation space restrictions or safety hazards, adapting to household maintenance scenarios.

3. Heavy-Load Support of Heavy-Duty Engineering Trailers (Core Scenario: YD38-007)

1. Model Selection and Operation:
   - The trailer weighs 8,000 LBS with a high chassis, so YD38-007 (side handle + 15"+13" combined travel, alloy steel body) is selected;
   - Operation: First turn the handle to complete 15" main travel lifting (trailer 381mm off the ground), then fine-tune with 13" secondary travel (total height 511mm off the ground), fit the support point at the trailer bottom, and fasten the safety buckle;
   2. Engineering Operation Performance:
   - Heavy-Load Stability: Supporting the 8,000 LBS trailer + tools (total weight approx. 9,000 LBS), no jack deformation or base collapse;
   - Environment Resistance: Dusty construction site, no dust accumulation on the black coating (rinsed with high-pressure water gun once a week), no rust after 6 months of use;
   - Durability: Supported for 8 hours daily, the gear set remains smooth without jamming after 1 year, and the support rod shows no obvious wear;
   3. Engineering Advantages:
   - Combined travel adapts to high-chassis heavy-duty trailers, no repeated padding required;
   - Alloy steel resists heavy loads, meeting high-frequency use needs in engineering.
   Result: The operation safety of the heavy-duty engineering trailer is improved, with no support failure or corrosion issues, adapting to harsh construction site scenarios.

IV. Frequently Asked Questions (FAQ)

Q1: The handle feels stuck during turning, and smooth lifting is impossible. What is the reason?

1. Clean the Gear Set: After use in construction sites or dusty scenarios, dust easily enters the gear gap and causes jamming — remove the handle (detachable for some models), blow off dust in the gear set with compressed air, and clean residual impurities with a brush;
2. Add Grease: Lubricating grease is lost from the gears after long-term use, increasing friction resistance — apply special lithium-based grease (thickness 1-2mm) on the gear teeth and support rod threads, turn the handle repeatedly 3-5 times, and the stuck feeling will be significantly reduced;
3. Check if the Support Rod is Tilted: Tilting of the support rod during lifting (perpendicularity deviation from the base ＞3°) will cause jamming — lower the support rod, realign it with the support point, ensure the support rod is perpendicular to the ground, and try lifting again.

Q2: After use in coastal areas, rust appears on the surface of zinc-plated jacks (YD38-001/002). How to handle it?

1. Minor Rust Treatment: Gently polish the rust with fine sandpaper (1000 grit) (avoid scratching the base material) until the metal color is exposed. Then spray with zinc layer repair agent (matching model available from the merchant) and air-dry for 24 hours;
2. Severe Rust Treatment: If the rust area exceeds 20% (corroded to the carbon steel base material), it is recommended to replace with black-coated models (YD38-003+), avoiding support failure caused by continued use;
3. Preventive Maintenance: Rinse the salt on the jack surface with fresh water every 2 weeks, and apply a layer of industrial anti-rust wax (non-corrosive) after drying. Monthly application is recommended in coastal areas to enhance salt spray resistance.

Q3: How to select the correct YD38 series model based on trailer parameters?

1. Confirm Trailer Weight:
   - Weight ≤1,500 LBS (Light-Duty): Select YD38-001/002;
   - 1,500 LBS ＜ Weight ≤5,000 LBS (Medium-Heavy-Duty): Select YD38-003/004/005/006;
   - Weight ＞5,000 LBS (Heavy-Duty): Select YD38-007/008;
2. Confirm Chassis Height:
   - Height ≤250mm (Low Chassis): Select 10" travel (001/002);
   - 250mm ＜ Height ≤380mm (Medium Chassis): Select 10"/15" dual travel (003-006);
   - Height ＞380mm (High Chassis): Select 15"+13" combined travel (007/008);
3. Confirm Usage Scenario:
   - Daily parking + flat ground: Select wheeled models (001/002);
   - Maintenance + narrow space: Select top-handle models (004/006/008);
   - Heavy load + complex environment: Select black-coated + alloy steel models (007/008);
   - Example: A trailer with weight 3,000 LBS, chassis height 300mm, and maintenance needs: Select YD38-004.

Q4: During trailer support, the jack base sinks into grass/mud. How to handle it?

1. Temporary Treatment: Place a hard support plate (e.g., 30cm×30cm steel plate, thick wooden board, thickness ≥10mm) under the base. The support plate must be flat and non-deformable, which can increase the ground contact area by 3-5 times and reduce the pressure to below 0.03MPa, avoiding further sinking;
2. Select Adaptable Models: For long-term use on soft ground, it is recommended to replace with wheel-free models (003-008) + enlarged base accessories (250mm diameter base available from the merchant). The wheel-free design has a larger ground contact area than wheeled models, making it more suitable for soft ground;
3. Operation Notes: Turn the handle slowly during support to avoid excessive instantaneous force on the base due to rapid lifting; after support is completed, minimize trailer movement in the supported state (movement will increase base pressure and easily cause sinking).