SWLB Nut Lifting Worm Gear Ball Screw Elevator: Heavy-Load Precision Lifting Transmission Solution
I. Product Overview
Weigao SWLB Series Nut Lifting Worm Gear Ball Screw Elevators are integrated precision transmission devices combining worm gear drive and ball screw technology, tailored for industrial scenarios requiring vertical precision lifting, heavy-load bearing, and safe operation. As a core lifting product in Weigao's transmission lineup, this series addresses the pain points of low lifting precision, poor load stability, and potential safety hazards of traditional lifting mechanisms in heavy-duty adjustment, precision positioning, and vertical conveying scenarios. Compliant with ISO 3408 international ball screw standards and certified by ISO 9001 quality management system and IP65 protection level, it integrates high-efficiency worm gear structure, precision ball screw pair, and high-strength cast steel housing. The product features micron-level positioning accuracy, strong heavy-load capacity, reliable self-locking performance, and multi-layer safety protection, capable of stably operating in temperature ranges from -25℃ to +100℃. It is widely applied in heavy-duty lifting platforms, precision machine tool worktables, metallurgy equipment adjustment, and medical lifting devices, providing safe and precise lifting power support for global industrial fields.
II. Core Advantages
1. Worm Gear-Ball Screw Integration, High Precision & Efficiency
Adopting integrated design of worm gear drive and precision ball screw pair, the elevator converts rotary motion into stable linear lifting through seamless collaboration of core components. The worm gear is made of high-quality tin bronze (ZCuSn10Pb1) matched with 20CrMnTi alloy steel worm (carburized and quenched to HRC 58-62), ensuring smooth transmission and excellent wear resistance. The ball screw pair adopts C5-level precision processing, with滚珠循环 system optimizing force distribution, realizing rolling friction instead of sliding friction and increasing transmission efficiency to 88%-92% compared with traditional trapezoidal screw. The integrated structure minimizes assembly clearance, with repeat positioning accuracy controlled within ±0.02mm and lifting speed up to 1500mm/min, fully meeting high-precision and high-efficiency lifting requirements of industrial equipment. Equipped with pre-tightened nut design, it effectively eliminates reverse backlash and enhances structural rigidity.
2. Heavy-Load Optimized Design, Strong Bearing Capacity
The SWLB series is optimized for heavy-load scenarios through structural enhancement and material upgrading. The ball screw adopts 40CrMo alloy steel with high-frequency quenching treatment, with surface hardness up to HRC 60-63 and tensile strength ≥600MPa, supporting rated loads from 5kN to 200kN. The worm gear box adopts integral cast steel housing, with reinforcing ribs optimized by finite element simulation to disperse load pressure, ensuring no deformation under 1.2 times rated load. The planetary滚珠 structure of the screw pair disperses stress evenly, improving impact resistance and extending service life by 30% compared with ordinary ball screw elevators. It supports both single-unit independent operation and multi-unit synchronous control, enabling customized combination for large-area heavy-load platforms and ensuring consistent lifting precision across the entire platform.
3. Multi-Layer Safety Protection, Reliable Operation
Integrating multiple safety protection mechanisms, the elevator effectively eliminates operational risks in vertical lifting scenarios. The worm gear structure has inherent self-locking performance, preventing load falling due to power failure without additional braking devices. Optional electromagnetic brakes and mechanical safety locks form a dual protection system for high-risk applications. It adopts multi-stage sealing design: skeleton-type double-lip oil seals prevent lubricant leakage, and telescopic stainless steel dust covers block dust and impurities from invading the ball screw pair, ensuring reliable operation in dusty and humid environments. The housing is treated with anti-rust and high-temperature resistant coating, and equipped with temperature and overload sensors for real-time monitoring, triggering alarms promptly when abnormal conditions occur. The input end is designed with overload protection coupling to avoid component damage caused by excessive torque.
4. Flexible Installation & Lubrication, Easy Maintenance
The elevator supports diverse installation forms including vertical, horizontal, and inverted mounting, with standardized flange and foot mounting interfaces compatible with mainstream industrial equipment. The optimized lubrication system adopts special high-temperature resistant lithium-based grease for the worm gear and ball screw pair, with a visual oil level window facilitating daily inspection. The grease has excellent adhesion and wear resistance, ensuring stable lubrication effect under extreme temperature and heavy-load conditions, with a recommended maintenance cycle extended to 12000 hours. The modular design of core components allows quick disassembly and replacement, reducing on-site maintenance difficulty. The ball screw pair is equipped with a dedicated oil injection port for targeted lubrication, further extending service life to over 30000 hours under normal working conditions.
III. Typical Application Fields
- Heavy-Duty Lifting Platforms: Factory cargo lifting platforms, warehouse stacking platforms, heavy-load capacity ensuring stable operation with full loads
- Precision Machine Tools: CNC machine tool worktables, machining center lifting mechanisms, micron-level precision meeting processing accuracy requirements
- Metallurgy Equipment: Steel mill roll gap adjustment devices, billet conveying lifting mechanisms, high-temperature resistance adapting to harsh working conditions
- Medical Equipment: Surgical bed lifting systems, medical imaging equipment adjustment, self-locking performance ensuring patient safety
- Construction & Automation: Building template lifting, automated production line lifting stations, multi-unit synchronization realizing large-area precision control
IV. Key Technical Parameters
| Model Specification | SWLB Series Nut Lifting Worm Gear Ball Screw Elevator |
| Power Range | 0.5kW - 45kW (Supporting multi-unit combination for heavy-load scenarios) |
| Transmission Ratio | Rated Load: 5kN - 200kN, Repeat Positioning Accuracy: ±0.02mm, Transmission Efficiency: 88%-92% |
| Operating Noise | ≤55dB (1m distance, full load) |
| Operating Temperature | -25℃ - +100℃ |
| Mounting Type | Vertical/horizontal/inverted mounting, C5-level ball screw, cast steel housing, self-locking + dual safety protection |
V. Installation & Maintenance
Select models based on rated load, lifting speed, and installation form. During installation, ensure coaxiality error ≤0.03mm and fix the housing firmly to avoid vibration. Adopt dedicated high-temperature lithium-based grease, and replenish or replace it every 12000 hours. Regularly inspect the dust cover integrity, safety lock function, and ball screw wear status. For multi-unit synchronous systems, calibrate positioning accuracy periodically. Avoid overloading operation, and perform maintenance by professional technicians when abnormal noise or positioning deviation occurs.
Weigao SWLB Series Elevators adhere to the design philosophy of "precision lifting, heavy-load reliability, and safety priority", focusing on the core needs of industrial vertical transmission scenarios. With advantages of worm gear-ball screw integration, multi-layer safety protection, and flexible adaptation, it breaks through the limitations of traditional lifting mechanisms in precision and safety. The product provides high-quality lifting solutions for machine tools, metallurgy, and medical industries, supported by strict quality control and professional after-sales services. Compliant with international precision transmission standards, it is committed to becoming a trusted partner in the global industrial lifting transmission field.
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