Slew drive solution provider-Unique Transmission

The wear and tear of the gear teeth can cause rotation clearances in the worm screw. It is therefore necessary to check that rotation after 700 hours of operation or every 6 months, so as not to exceed approximately 20° of free rotation.  In order to measure that rotational clearance, the motor must be disconnected and the screw turned manually, measuring the angle rotated by the screw with respect to a previously specified starting position.  The previously specified inspection interval must be reduced to 200 hours of operation if the clearance reaches approximately a 15° rotation. Should the clearance continue to increase, the inspection should be reduced to 50-100 hours of operation, and in the event that it exceeds the maximum permissible value the system must be replaced. Checking mounting bolts To compensate for possible settling, it is necessary to retighten the bolts to the prescribed torque. This shall be done after no more than 100 hours of operation and without exte...

 Cleaning the slewing drive and the mounting structure: • Remove extraneous material from supporting surfaces (including paint residues, welding beads, burr formation). Clear corrosion protection coating from supporting surfaces of the slewing drive. Cleaning material does not penetrate into the slewing drive. Cleaning material that attacks the sealing material is not used. Applicable cleaning materials: Cold solvents (e.g. white spirit, diesel oil, Kaltryl KEV). Lubricating the slewing drive: • slewing drive are supplied fully lubricated. They shall be greased again prior to initial operation. It is essential to use the greases specified on the delivery drawing. Choice of mounting bolts: Prescribed sizes, number and quality grades shall be used. • Grip ratio (grip length to diameter of bolt) shall be observed from minimum ≥5 to maximum ≤10. • Bolts with a fully threaded shaft are not permissible. • The function and lifespan as well as the durability of the bolt connection are aff...

This system ( slewing bearing driven by a worm screw) is a complete assembly and is ready for installation. And furthermore can be very easily integrated into existing applications.  It consists of a ball bearing or rollers capable of simultaneously withstanding axial, radial and moment loads, a hydraulic or electric motor to generate relative movement between the two rings, and a fully enclosed coating protecting the ring from contamination, damage and loss of lubricant.  Moreover, with these assemblies the installation of components is avoided and is available in a comprehensive range of several standard sizes. In the following Figure all the components which make up the entire assembly can be discerned. From among its main advantages the following can be highlighted: • It is very compact, making it suitable for installations requiring space saving. • Having a very high load capacity in a very compact design. • Having a long service life. • Having low maintenance costs. • A...

Clearance is an important technical parameter of slewing bearing , which directly affects the technical performance of the bearing's load distribution, vibration, noise, friction, temperature rise, service life and mechanical operation accuracy. Too large clearance will cause the bearing internal capacity area to decrease, the stress on the contact surface will increase, the rotation accuracy will decrease, the vibration and noise will increase. As a result, the service life is shortened and the clearance is too small, the negative clearance (interference) may occur in actual operation, rotation jamming will be inflexible, resulting in increased friction and heating, increased temperature rise, which will make the effective clearance smaller or larger, this vicious circle will cause the bearing to lock and cannot rotate. The bearing's clearance value is artificially specified by the designer and a certain range is divided according to the size of the slewing bearing, which is u...

Truck with loading crane, referred to as truck crane, are a kind of lifting mechanism installed on a cargo truck for the purpose of loading or lifting goods. The lifting mechanism can be lifted up and down, expanded and rotated, the goods can be flexibly lifted and placed in a designated position. The rotation of the lifting mechanism is realized on a slewing ring or a slew drive. The above picture shows a common lifting mechanism with slewing rings. The slewing ring with external gears is equipped with a yellow protective cover to protect the operator and at the same time to protect the equipment. Near the rotating mechanism in the picture, grease is flowing everywhere, quickly losing, the equipment is messy, the grease is contaminated and lost, resulting in frequent grease filling, high maintenance costs and high equipment failure rates. The spur gear slew drive of U-TRSM can solve the above mentioned problems for customers. Spur gear slew drive is also called gear type slew drive, ...

 The global slewing drives market attained a value of USD 2 billion in 2020. The slew drives market is further expected to grow in the forecast period of 2021-2026 at a CAGR of 4.5% to reach USD 2.7 billion by 2026. The slewing drives market is expected to be driven by the rising construction sector and a growing adoption of solar-powered energy alternatives. The Asia Pacific is a key market in the industry due to the rising construction industry and growing industrialisation within the region. The single axis slewing drives dominated the regional market in 2020. The slewing drive refers to a gearbox that transmits a torque required for rotation while keeping the axial and radial loads held safely. Based on its axis types, the slewing drives market can be segmented into: Single Axis Dual Axis Multiple Axis By gear, the industry can be bifurcated into: Worm Gear slew drive Spur Gear slew drive The slewing drives market can be broadly categorised on the basis of its applications seg...