Grab Crane Universal Drive Shaft Easy To Install For Transmission System

1. Product Description
The grab crane wheel-side universal drive shaft assembly is a core driving component for grab cranes used in ports, docks, and ship loading/unloading scenarios. Specifically designed for multi-grab cooperative operations, it efficiently transmits power to the traveling wheel set while accommodating the dynamic stability requirements of frequent steering, sudden load changes, and complex terrain. Its high-torque, impact-resistant features and compact structure ensure precise control and continuous operation during heavy-load grabbing, rapid movement, and multi-angle adjustments, making it a key component for enhancing loading/unloading efficiency and safety.

2. Product Features

(1) Heavy-Duty Anti-Torsion Design
Forged from high-strength alloy steel and precision-ground with surface hardening treatment, it boasts a tensile strength of ≥1,200 MPa and a dynamic torque capacity of 30,000 N·m, suitable for full-load impact conditions.

(2) Multi-DOF Universal Drive
Equipped with a double universal joint structure, supporting a ±45° deflection angle to adapt to uneven tracks and dynamic wheel displacement caused by grab load swings.

(3) All-Weather Sealing Protection
Features a multi-lip redundant sealing system (rubber lip seal + dust cover) with IP68 protection, resistant to seawater corrosion, salt spray erosion, and dust ingress. Internally lubricated with long-lasting water-resistant grease, operable in temperatures from -45°C to 120°C.

(4) Dynamic Balance Optimization
Lightweight design combined with dynamic balance calibration (residual unbalance ≤5 g·mm) reduces high-speed vibration, with noise controlled at ≤70 dB(A), extending bearing service life.

3.Product Parameters

T: Rated Torque
T1: Failure Torque
αmax: Maximum Allowable Swing Angle
SΦD: Rotation Space
Φd: Outer Sleeve Diameter
L: Yoke back Distance

4.Applications

(1) Container Handling: Adapts to high-frequency start-stop cycles, heavy-load impacts, and multi-grab cooperative operations.

(2) Bulk Cargo Grab Operations: Resists dust pollution and vibration shocks during the loading/unloading of coal, ore, and other bulk materials.

(3) Shipyard Maintenance: Corrosion-resistant design for long-term use in humid marine environments.

(4) Multi-Crane Coordination: Enables precise synchronous control for collaborative handling of oversized cargo.

5. Customization: OEM customization supported.

6.Product Advantages

(1) Impact-Resistant Redundant Design: Reinforced spline shaft and flange connection structure withstands shock loads from sudden grab unloading.

(2) Quick Maintenance Compatibility: Modular assembly design allows online lubrication without disassembly, with replacement time ≤45 minutes.

(3) Multi-Condition Adaptability: Customizable versions available, including low-temperature-resistant models (-40°C to +120°C).

Xi'an Xin Sanming Precision Equipment Co., Ltd was established in March 2015. Its predecessor was Xi'an Sanming Auto Parts Co., Ltd which established in 1996. The company's address is adjacent to large automobile production enterprises such as Shaanxi Heavy Duty Truck Co., Ltd. and Shaanxi Hande Axle Co., Ltd. It is surrounded by highways and has convenient transportation. The registered capital of the company is 10 million RMB Yuan, with a factory area of over 10000 square meters and an office area of over 500 square meters. The company currently has nearly 100 employees. The company is mainly committed to the research and development, testing, design, manufacturing, and sales of transmission system components such as automobiles. The company has an intelligent processing line, heat treatment production line, and assembly line with an annual output of 180000 sets of double series universal joints. It currently has more than 150 advanced production and manufacturing equipment such as intelligent manufacturing, and more than 50 high-precision testing equipment. For many years, the company has been supplying double joint universal joint assembly series products to enterprises such as Shaanxi Automobile Heavy Truck, Dongfeng Group, and XCMG Group, and has become a mature and stable cooperative supplier. The double universal joint shaft developed by the company is assembled in off-road vehicles such as Shaanxi Automobile and Dongfeng, and has participated in numerous domestic and international off-road vehicle rally races.

The company has always focused on technological innovation and product research and development, and has honed an excellent and efficient technical team, with more than 10 high-level transmission component engineering and technical research and development talents and complete product testing and verification methods. It can adapt to customers' personalized needs and market development needs, and develop various types of cross axis universal joint shaft products for users. The company has independently developed a series of double universal joint shafts and double centered universal joint shafts with complete intellectual property rights. After comparing the overall performance of similar products from customers with international first-class brands, the conclusion is that the performance is equivalent and can fully meet the needs of equipment with large angles, large torque transmission, and harsh working conditions. The company's products have obtained more than 20 patents and are widely used in various fields such as off-road vehicles, construction machinery, agricultural machinery, shipping, wheeled vehicles, aviation, etc. The company has been awarded the titles of "Shaanxi High tech Enterprise" and "Shaanxi Gazelle Enterprise", For many years, the company has been operating in accordance with the IATF16949-2016 quality system, ensuring controlled product quality.

The company's development goal is to continue to adhere to the business philosophy of "continuous technological innovation and continuous quality improvement", continue to adhere to the service tenet of "customer first", keep up with the development trends of international and domestic automotive, construction machinery, agricultural machinery, shipping, aviation and other fields, constantly experiment and explore the application of new materials and processes in universal joint shaft products, continuously improve technical level, continuously enhance enterprise management level, and strive to build the enterprise into a world-class supplier of transmission machinery components!