Slewing Rings
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Slewing Rings

Your movement solutions

TGB Group With over 20 years of experience in bearings, gears and power transmission, the TGB Group has become a global leader in the development and production of movement solutions for the industrial and renewable energy markets. The TGB Group has manufacturing facilities on different continents which enables us to provide competitive solutions and customise projects while being able to retain a exible manufacturing system and offer worldwide deliveries! Our aim is to forge long lasting relationships with our customers by demonstrating our commitment throughout the engineering process, by...

Application Examples Rotary Tables Fork Lift Mobile Crane

Application Examples

SLEWING RINGS TECHNICAL INFORMATION Slewing rings are mechanical elements designed to withstand high loads (axial, radial and tilting moment) while performing rotational movements to displace the load. The axial loads are the ones applied on the same direction as the rotation axis, while the radial loads are perpendicular to this axis. The main parts of the slewing ring are two rotating rings and the rolling elements between them. Both rings are provided with holes for bolts that can be threaded or through holes to fix the part to the structure. All the slewing rings without teeth can be...

SLEWING RING CALCULATION AND CHECK EQUIVALENT LOAD CALCULATION First of all, the loads that the slewing ring will be supported have to be defined. To take into account the differences between an application of high-precision and another one that receives high mechanical stress, different applica- tion factors must be considered. These are shown in the table below for different load cases. TGBgroup recommends adding a safety factor to the loads, for greater caution, depending on the amount of wor- king hours, the frequency at which the peak loads occur, etc. These factors will be applied in...

Slewing ring calculation and check Raceway Each slewing ring has a corresponding load chart which shows the maximum axial load and tilting moment that it is able to withstand (The load chart safety factor is 1). A slewing ring is correct for the application if the loading point (combination between axial load and tilting moment) is below its load curve. The vertical axis represents the equivalent tilting moment and the horizontal axis indicates the equivalent axial load. The blue line indicates the load limit of the slewing ring considering the raceway while the green line shows the load...

SLEWING RING CALCULATION AND CHECK FRICTION TORQUE All the slewing rings need a minimum torque to turn the slewing ring that depends on the loads applied, the lubrication, the preload on the slewing ring and the use or not of spacers. This value can be calculated using the following formula: In which ^ js calculated using the following formulas depending on the type chosen: Ball Slewing ring: Mwa = 0.3 ■ I-I Roller Slewing ring: Mwa = 0.3 ■ For the toothed slewing rings, the maximum turning torque of the slewing ring will be limited by the module, the tooth height and the pitch diameter....

Installation & maintenace instructions Transport, Handling and Storage Transport only in horizontal position avoiding possible impacts. The slewing ring should be manipulated carefully and wearing working gloves all the time. The threaded holes can be used to x bolts to handle the slewing ring in a safety way with a hoisting device. Store always in horizontal position and in closed rooms. Keep it away from getting wet. The corrosion protection has a shelf-life of approx. 3 months in closed packaging. Installation Previous to the installation, a cleaning of the slewing ring and the structure...

INSTALLATION & MAINTENACE INSTRUCTIONS The slewing rings must be re-greased after each cleaning and also before and after large periods of inactivi- ty, for example during the winter months for cranes and building machines. The reason for re-lubrication is to guarantee minimum properties of the grease. On the following table the re-lubrication intervals can be seen for The values on the table must never be a substitute for the values determined by the experience. The most usual cause for slewing ring failure is an insufficient amount of lubrication MAINTENANCE AND SECURITY CONTROLS TGBgroup...

Fixing holes Gear teeth Bearing Type Tooth Force Bearing Type Fixing holes Gear teeth Tooth Force

Bearing Type Fixing holes Tooth Force G, G1 = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing Bearing Type Fixing holes Gear teeth Tooth Force G, G1 = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing

Bearing Type Fixing holes Gear teeth Tooth Force G, G1 = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing Bearing Type Fixing holes Gear teeth Tooth Force G, G1 = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing

Bearing Type Fixing holes Gear teeth Tooth Force G = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing Bearing Type Fixing holes Gear teeth Tooth Force G = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing

Bearing Type Fixing holes Gear teeth Tooth Force G = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing

Fixing holes Bearing Type Gear teeth Tooth Force Bearing Type Fixing holes Gear teeth Tooth Force

Without gear

Bearing Type Fixing holes Fixing holes Bearing Type G = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing

Fixing holes Bearing Type G = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing Fixing holes Bearing Type G = For the number and the position of the greasenipples, please ask for a detailed drawing of the bearing