SJB Series Elevators: Dual-Mode Lifting & Quiet Energy-Saving Worm Gear Ball Screw Solution

I. Product Overview

Weigao SJB Series Elevators (including SJB screw lifting type and nut lifting type) are dual-mode integrated transmission devices combining worm gear drive and precision ball screw technology, tailored for industrial scenarios requiring flexible lifting modes, quiet operation, and energy efficiency. As a versatile lifting product in Weigao's transmission lineup, this series addresses the pain points of single lifting mode, high energy consumption, and excessive noise of traditional elevators in light-to-medium load adjustment, automated handling, and indoor precision equipment scenarios. Compliant with ISO 3408 international ball screw standards and certified by ISO 9001 quality management system and IP65 protection level, it integrates dual-mode lifting structure, lightweight aluminum alloy housing, and low-noise transmission design. The product features switchable lifting modes, ultra-quiet operation, energy-saving performance, and compact structure, capable of stably operating in temperature ranges from -20℃ to +90℃. It is widely applied in automated warehouse picking platforms, medical imaging equipment, electronic component assembly lines, and indoor lifting workbenches, providing flexible and efficient lifting power support for global light-to-medium load industrial fields.

II. Core Advantages

1. Dual-Mode Lifting Design, Flexible Adaptation

Innovatively adopting switchable dual-mode lifting structure, the SJB series supports both screw lifting and nut lifting modes to meet diverse scenario needs. The screw lifting type realizes linear motion through the screw's axial movement, suitable for narrow-space vertical lifting; the nut lifting type drives the nut to move along the fixed screw, ideal for large-stroke stable lifting. The worm gear pair adopts high-quality aluminum bronze (ZCuAl10Fe3) matched with 40Cr alloy steel worm (precision ground after quenching to HRC 56-60), ensuring smooth transmission and low energy loss. The C7-level precision ball screw pair adopts optimized ball circulation path, realizing rolling friction with transmission efficiency up to 85%-90%, 15% more energy-saving than traditional trapezoidal screw elevators. The dual-mode structure shares core components, enabling quick mode switching via modular accessories, with repeat positioning accuracy controlled within ±0.05mm and lifting speed adjustable from 50mm/min to 1200mm/min.

2. Lightweight Integrated Structure, Compact Installation

The SJB series achieves lightweight optimization through material and structural innovation, with the housing adopting high-strength die-cast aluminum alloy instead of traditional cast steel, reducing overall weight by 40% while ensuring structural rigidity. The integrated design integrates the worm gear box and ball screw pair into one, minimizing installation space and being 30% more compact than split-type elevators. The screw adopts 42CrMo alloy steel with nitriding treatment, surface hardness up to HRC 58-62, supporting rated loads from 2kN to 100kN to cover light-to-medium load scenarios. The housing is designed with integrated heat dissipation fins, enhancing heat dissipation efficiency by 25% to avoid overheating during long-term operation. It supports single-unit independent operation and dual-unit symmetric combination, enabling customized configuration for different load and stroke requirements, especially suitable for equipment with limited installation space.

3. Ultra-Quiet Transmission, Low Noise Operation

Integrating multiple low-noise technologies, the SJB series achieves ultra-quiet operation to meet the requirements of indoor and precision equipment scenarios. The worm gear pair adopts helical tooth modification design, increasing meshing contact area and reducing impact noise, while the ball screw pair is equipped with silent滚珠 and damping gaskets to eliminate rolling noise. The full-load operating noise is controlled within ≤48dB at 1m distance, equivalent to the volume of normal conversation, far lower than traditional elevators. The multi-stage sealing system uses silent rubber oil seals and telescopic dust covers, not only preventing lubricant leakage and dust intrusion but also reducing friction noise. The housing's aluminum alloy material has excellent sound insulation performance, further absorbing operational noise. Equipped with overload protection bearings, it avoids abnormal noise caused by excessive load, ensuring stable and quiet operation in medical, electronic, and indoor environments.

4. Energy-Saving Lubrication, Easy Maintenance

The optimized lubrication system adopts energy-saving low-viscosity synthetic lithium-based grease, which reduces friction resistance by 20% compared with traditional lubricants, further improving energy efficiency. The grease has excellent adhesion and temperature adaptability, forming a stable oil film at -20℃ to +90℃, with a recommended maintenance cycle extended to 15000 hours. The visual oil level window and one-key oil injection port facilitate daily inspection and lubricant replenishment, reducing maintenance difficulty. The modular design of core components allows quick disassembly and replacement of the screw, nut, and worm gear pair without professional tools. The dual-mode shared lubrication circuit simplifies the structure, avoiding complex maintenance of separate systems, and extending the overall service life to over 28000 hours under normal working conditions.

III. Typical Application Fields

• Automated Warehousing: Picking platforms, small cargo lifting mechanisms, dual-mode design adapting to different storage space layouts
• Medical Equipment: X-ray machines, ultrasound equipment lifting systems, ultra-quiet operation improving patient experience
• Electronic Manufacturing: Component assembly lines, precision testing platform adjustment, lightweight structure reducing equipment load
• Indoor Workbenches: Laboratory lifting tables, workshop maintenance platforms, compact design saving indoor space
• Light Industry Automation: Packaging equipment lifting mechanisms, food processing auxiliary devices, energy-saving performance reducing operational costs

IV. Key Technical Parameters

V. Installation & Maintenance

Select models and lifting modes based on load capacity, stroke requirement, and installation space. During installation, ensure coaxiality error ≤0.04mm and fix the housing with anti-vibration gaskets to enhance quiet performance. Adopt dedicated low-viscosity synthetic lithium-based grease, and replenish or replace it every 15000 hours. Regularly inspect the dust cover tightness, ball screw wear, and mode switching mechanism. For dual-unit systems, calibrate synchronization accuracy periodically. Avoid overloading beyond rated load, and perform maintenance by professional technicians when abnormal noise or lifting jitter occurs.

Weigao SJB Series Elevators adhere to the design philosophy of "flexible dual-mode, quiet energy-saving, and compact adaptation", focusing on the core needs of light-to-medium load industrial lifting scenarios. With advantages of switchable lifting modes, ultra-quiet operation, and lightweight integration, it breaks through the limitations of traditional elevators in versatility and environmental adaptability. The product provides high-quality lifting solutions for medical, electronic, and warehousing 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 light-to-medium load industrial lifting field.

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