This is a unit with gear machining on the flange outer circumference and a bearing assembled in the nut section. It is ideal for a torque transmission mechanism driven by a spline nut.
The rotary ball spline is a unit type where gear machining is done on the outer peripheral part of the LBR-shaped flange, and radial and thrust bearings are compactly combined in the spline nut section. The ball rows are held in a way that allows them to move in a circular motion, aligned by a special synthetic resin retainer, ensuring that the balls do not fall out even when the spline shaft is removed. 【Angular Backlash "Zero"】 Due to the structure where three rows of rolling protrusions are evenly distributed around the outer circumference of the spline shaft, the ball rows are pinched, allowing for preloading to be applied, which eliminates backlash in the rotational direction and increases rigidity. 【Compact Design】 The structure combines radial and thrust bearings compactly in the spline nut section, allowing for a compact design. 【High Rigidity】 By applying a suitable preload with a large contact angle, high torque rigidity and moment rigidity can be achieved. Additionally, the needle bearings in the support section allow for strong support of the nut against radial loads, enhancing rigidity. 【Optimal for Torque Transmission of Spline Nut Drive】 The support bearings enable rigid support of the nut, making it optimal for torque transmission in spline nut drives.
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basic information
THK Gear-Driven Rotary Ball Spline LBG Type Size Range LBG20 to LBG85 *For more details, please refer to the catalog.
Price information
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Applications/Examples of results
Industrial robot support and arm Auto loader Transfer machine Automated transport device Tire molding machine Spot welding machine spindle High-speed automatic painting guide shaft Riveting machine Winding machine Electrical discharge machining machine Work head Grinding machine spindle drive shaft Various types of transmission devices Precision index shaft, etc.
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Company information
Kozu Transmission Machinery Co., Ltd. is a top-class specialized trading company for industrial equipment in Japan. Countless machines in the industrial sector are in operation... and our products are vital in their drive, transmission, and control parts. We also contribute to the faithful execution of operations in FA and CIM. Since our founding in 1951, we have expanded our range of products not only in transmission components but also in response to customer needs, broadening our offerings to include control systems, ensuring we have everything necessary for transmission. With the motto of being a "trustworthy company," we have established a unique system to respond quickly to customer requests while maintaining a customer-oriented approach. Additionally, we continuously capture the latest product information and provide it to our customers, as well as making proposals to manufacturers. Moving forward, we aim to continue our daily efforts for improvement without forgetting our original intentions.