Centered on "heavy-load safety + efficient operation + durability", the YD30-002 4-Ton Capacity Cable Puller is optimized to address the pain points of medium-to-heavy manual lifting tools such as "difficult load control, laborious operation, and easy wear and rust". Compared with ordinary 4-ton cable pullers, it has significant advantages in control precision, operation efficiency, and durability. Its core highlights are as follows:
Adopts a "ratchet-pawl single-tooth engagement" braking structure. When lowering or releasing heavy objects, each handle rotation only lowers the load by ≤3mm, completely eliminating the risk of "free-fall" drop of traditional hoists. For example, in the scenario of lifting a 3000kg motor, even if an operation error occurs suddenly, the braking system locks instantly, keeping the motor suspended stably without sliding—meeting the high safety precision requirements of heavy equipment installation.
- Overload Protection: Equipped with a mechanical overload protection mechanism. When the load exceeds 25% of the rated value (i.e., 5000kg), the ratchet and pawl automatically disengage, and the handle cannot apply force further—preventing cable breakage due to overload or deformation of the main structure;
- Double-Insurance Hook: The forged hook features a safety latch + closed latch design. After the latch is inserted, the hook opening is completely locked, preventing disengagement even if the heavy object shakes. Meanwhile, the latch prevents accidental falling of the safety pin, suitable for bumpy scenarios such as high-altitude lifting and vehicle traction.
Equipped with a freewheel disengaging mechanism. For long-distance cable release, simply toggle the switch to disengage from the pawl constraint, and the cable can be pulled out manually quickly—for a standard 4m cable, it can be fully released in only 32 seconds, saving 75% of time compared to traditional hoists. In trapped vehicle traction scenarios, there is no need to repeatedly rotate the handle for cable release, greatly improving emergency rescue efficiency.
The handle adopts an extended 350mm design (longer force arm saves 30% labor), and with the curved rubber grip, the palm fit is improved by 60%. After 40 minutes of continuous operation, the technician's palm soreness is reduced by 80% compared to traditional metal handles—solving the pain points of "laborious operation and easy hand discomfort" of heavy hoists, suitable for long-duration operation scenarios.
- Pawl Component: Adopts a "three-steel-plate stacked welding" structure, with a contact area twice that of the single-steel-plate design. Under 4000kg rated load, after 5000 consecutive operations, the wear is only 0.3mm, and the service life reaches over 8000 times—1.5 times that of ordinary hoists;
- Full Galvanization Rust Prevention: The main steel plate and cable are both hot-dip galvanized, with a zinc layer thickness ≥10μm, showing no rust after 72-hour salt spray test. It can be used for more than 3 years without rust in open-air construction site operations and humid ship deck environments.
The hook is integrally forged from 45# steel, with a hardness of HRC 38-42 after quenching and tempering. It can withstand 1000kg heavy object lateral impact without deformation. For example, in construction vehicle traction scenarios, even if the vehicle shakes and causes the hook to be stressed offset, there will be no hook bending or cracking—meeting the rugged requirements of heavy industrial scenarios.
Scenario Requirement: A heavy auto repair shop needs to configure lifting tools for 2 truck maintenance workstations, used for traction of excavators and trucks within 3500kg (trapped vehicle rescue) and adjustment of 2800kg truck positions (precise alignment with maintenance platforms). The tool needs to have strong traction, safe operation, and stable use in oily environments.
Operation Process:
- Preparation: The technician carries the YD30-002 to the trapped vehicle, hangs one hook of the puller on the anchor point of the workshop load-bearing column, and connects the other hook to the vehicle chassis lifting lug via a shackle; toggles the freewheel switch to release the 4m cable in 32 seconds, and adjusts the puller to the force-bearing straight line;
- Traction Operation: Turns off the freewheel, rotates the handle clockwise. With the labor-saving design of the extended handle, one person can pull a 3500kg trapped vehicle, and the vehicle moves slowly; if fine position adjustment is needed, gently rotates the handle counterclockwise to make millimetric corrections through single-tooth adjustment, avoiding collision with maintenance equipment;
- Post-Operation Maintenance: Wipes oil stains on the puller surface with a rag. The hot-dip galvanized material has no residual stains, and the handle rubber grip is oil-resistant and non-deformable. It can be stored in the tool cabinet directly;
Result: With heavy-load traction and oil-proof design, compared with the traditional "hydraulic jack + traction rope" combination, it improves rescue efficiency by 90%, eliminates the risk of vehicle unhooking, and reduces technicians' physical consumption by 70%.
Scenario Requirement: A construction site needs to configure lifting tools for the steel structure installation team, used for lifting steel columns and beams within 2000kg (1800kg per lift). The operation point is on a 15m-high scaffolding, requiring the tool to be lightweight, anti-drop safe, and adaptable to outdoor rainy environments.
Operation Process:
- High-Altitude Preparation: Two workers cooperate to carry the puller to the 15m scaffolding, hang the hook on the load-bearing steel frame (load ≥5000kg), and connect the lower hook to the steel column via a lifting ring;
- Lifting Control: Rotates the handle clockwise to lift the steel column at a speed of approx. 0.6m/min, and stops when reaching the installation height; if adjusting the steel column angle is needed, lowers it millimetrically through single-tooth adjustment to ensure precise alignment of the steel column with bolt holes;
- Rainy-Day Maintenance: After rainy-day operations, wipes rainwater on the puller surface with a dry cloth. The hot-dip galvanized layer has no rust, and it remains smooth for next use;
Result: With precise control and rust-proof design, the high-altitude steel structure installation efficiency is increased by 85%, no risk of steel column falling, and the service life reaches more than 4 years in outdoor rainy environments.
Scenario Requirement: A factory workshop needs to install a 3000kg CNC lathe, requiring traction of the lathe from the ground to the embedded track (deviation ≤5mm). The narrow workshop space prevents the use of overhead cranes, requiring manual tools for precise traction and stable fixing.
Operation Process:
- Traction Preparation: Fixes the puller to the load-bearing anchor point of the workshop wall, connects the hook to the machine tool base via a dedicated sling; activates the freewheel to quickly release the 4m cable, then turns off the freewheel;
- Precise Traction: Two people cooperate to rotate the handle, and the machine tool moves slowly toward the track. Pauses every 100mm of movement, and corrects deviations through single-tooth adjustment (each adjustment ≤3mm); finally, accurately positions the machine tool on the track (deviation ≤3mm), meeting the installation precision requirements;
- Temporary Fixing: Maintains the puller in a force-bearing state after positioning, and fixes the machine tool with gaskets to avoid displacement during installation;
Result: With heavy-load precise traction, the machine tool positioning efficiency is increased by 95%, the installation deviation rate is reduced to less than 0.2%, and no large equipment is needed—saving workshop space.
A1: Overload use is strictly prohibited. Although overload triggers protection, there are still safety hazards. The product's rated load of 4000kg is a safety value verified by fatigue testing. Although the overload protection locks at 5000kg, long-term overload (e.g., 4200-4400kg) will cause: ① Fatigue damage to the cable, reducing the breaking force from 20000N to 16000N and increasing the breakage risk by 20%; ② Accelerated wear of the ratchet and pawl—after 500 overload operations, the wear reaches 1.2mm, far exceeding the normal 0.3mm, shortening the service life to 1/4 of the original. Moreover, "protection failure" may occur, leading to heavy object falling accidents.
A2: Out-of-control swinging will not occur, as the freewheel is designed with a buffer mechanism. The freewheel only functions to "disengage from pawl constraint"; cable release requires manual uniform traction, with speed controlled by humans (e.g., a 4m cable takes 32 seconds to release, only 12.5cm per second), no sudden acceleration. If you let go, the cable sags slowly due to its own weight (speed ≤0.15m/s), and the puller body has slight damping to further slow down the fall. Meanwhile, the freewheel switch has "gear locking" to prevent accidental opening due to vibration, completely avoiding swinging risks.
A3: Regular maintenance can prevent rust, and slight rust can be repaired. The specific steps are as follows:
- Daily Maintenance: After each outdoor use, wipe the surface moisture of the main body and cable with a dry cloth; apply lithium-based grease once a month (focus on lubricating the ratchet-pawl engagement area and cable); clean immediately after rainy-day use to avoid rainwater residue corroding the galvanized layer;
- Rust Repair: If slight rust appears (no galvanized layer peeling), gently polish with 1000-grit fine sandpaper, then spray zinc-based repair agent; if the galvanized layer peels off (area ≤2cm²), apply anti-rust paint (epoxy zinc-rich paint is recommended) to form a protective film after drying; if rust is severe (area ＞5cm²), contact after-sales service to replace components to avoid structural strength reduction.
A4: Most cases are caused by foreign matter or insufficient lubrication, which can be checked by yourself. The steps are as follows:
- Foreign Matter Check: Turn off the freewheel, check if there is metal debris or dust in the ratchet-pawl engagement area (easily accumulated in workshop scenarios), clean the foreign matter with a brush, then test by rotating the handle;
- Insufficient Lubrication: If jamming persists after cleaning, open the oil filling hole on the side of the puller, inject 10-15ml lithium-based grease (avoid using engine oil, which easily absorbs dust), and rotate the handle repeatedly 10 times to relieve jamming;
- Fault Judgment: If abnormal noise (e.g., "clicking" sound) still exists, the pawl spring may be broken or the ratchet teeth may be deformed. Stop using it immediately, contact after-sales service and provide the model (YD30-002) to replace components. Do not force rotation to avoid further damage.
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Cable Puller: 4000kg Load, Freewheel, Anti-Slip Grip for Auto Shop/Construction/Workshop Images
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