RD-Gears - 82 Pages

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Catalogue excerpts

nu SERIES Gearheads: High Performance In-line and Hollow Shaft Gearheads The RD SERIES Gearheads are based upon the highly successful, high-precision RV Series Reduction Gears. The high-performance RV has over 2 million units in service in various applications around the world today. The RD SERIES provides Near Zero Backlash, the ability to support heavy external loads and has significant provide significant advantages in terms of ease-of-use and cost for performance. 1. High shock load capability (Capable of 5 times the rated torque) 2. Near Zero Backlash (less than 1 arc-min) 3. High Ratio /...

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Table of contents Features and Benefits, Principle of Operation Rating Table Life Rating Allowable Acceleration/Deceleration Torque Momentary Maximum Allowable Torque Allowable Moment and Maximum Axial Load Momentary Maximum Allowable Moment Allowable Output Speed [Continuous] Allowable Output Speed [Intermittent] Torsional Rigidity, Lost Motion, Backlash Allowable Moment Diagram Efficiency Charts Low-temperature Characteristics (No-load running torque under low temperature) No-load Running Torque Product Codes Selection of Product Code Calculation of moment rigidity and torsion angle Calculation...

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The double-end support design and unique pin gear mechanism provide the following advantages High shock load capability High rigidity High precision High torque Capable of 5 times the rated torque High torsional rigidity Low backlash [1 arc.min] High torque density (capable of high torque with downsized gear) Heavy load support A set of internal main bearings (large angular ball bearings) enables complete support of heavy external loads. (1) Pre-greased (2) Coupling and motor flange provide easy motor mounting Oil seal Motor flange Main bearing (Angular ball bearing) Shaft High rigidity support...

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1. Rotation of the servo motor is transmitted through the ■ Fig. 1 First reduction section input gear to the spur gears, and the speed is reduced accordingly with the gear ratio between the input gear and the spur gears . 2. Since they are directly connected, the crankshafts have the same rotational speed as the spur gears . Spur gear 3. Two RV gears are mounted around the needle bearings on the eccentric region of the crankshaft. (In order to balance the equal amount of force, two RV gears are mounted) . 4. When the crankshafts rotate, the two RV gears mounted on the eccentric sections also revolve...

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The double-end support design and unique pin gear mechanism provide the following advantages High shock load capability High rigidity High precision High reduction ratio Capable of 5 times the rated torque High torsional rigidity Low backlash [1 arc.min] High torque density (capable of high torque with downsized gear) Capable of high reduction ratio (MAX I = 258:1) Heavy load support A set of internal main bearings (large angular ball bearings) enables complete support of heavy external loads. (1) The hollow shaft structure that allows routing of cables through the reduction gear (2) Pre-greased...

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1. Rotation of the servo motor is transmitted through the input gear to the large center gear, and is then transmitted through the small center gear to the spur gear. At this point, the speed is reduced accordingly to the gear ratio between the small center gear and the spur gear. This operation is carried out in the First reduction section . 2. Since they are directly connected, the crankshafts ■ Fig. 1 First reduction section Large center gear Small center gear have the same rotational speed as the spur gears . 3. Two RV gears are mounted around the needle bearings on the eccentric region of...

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Rating Table T0 Rated Torque Ratio Code Rated Output Speed Model Code (Speed Ratio) Rated Allowable Life Acceleration/ [Continuous] Deceleration Torque N-m (lb-in) Note: 1. The rating table shows the specification values of each reduction gear. 2. The allowable output speed may be limited by heat depending on the operation rate. 3. For the moment of inertia of the reduction gear, refer to the external dimension drawings of the reduction gear and the coupling. 4. For dimension α, refer to “Allowable Moment And Maximum Axial Load” in the Glossary on page 8.

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Capacity of Main Bearing Momentary Allowable Allowable Maximum Output Output Allowable Speed Speed Torque [Continuous] [Intermittent] (Note 2) (Note 2) rpm rpm N-m (lb-in) Lost Motion Maximum Thrust Load Momentary Maximum Allowable Moment Allowable Moment Torsional R:G:dity Spring Constant N-m/ arc.min (lb-in/arc.min)

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Glossary Life Rating Momentary Maximum Allowable Moment The lifetime resulting from the operation with the rated torque and the rated output speed is referred to as the “life rating ”. A large moment may be applied to the reduction gear due to execution of emergency stop or by an external shock. In such a situation, the allowable value of the momentary applied moment is referred to as “momentary maximum allowable moment”. Note: Be careful that the momentary excessive moment does not exceed the momentary maximum allowable moment. Allowable Acceleration/Deceleration Torque When the machine starts...

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Performance Allowable Moment Diagram RD-E Series 137

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Efficiency Charts Case temperature: 30˚C Lubricant: Grease (Molywhite RE00)

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Case temperature: 30˚C Lubricant: Grease (Molywhite RE00)

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Low-temperature Characteristics (No-load running torque under low temperature) RD-E Series Input speed: 2000 rpm Lubricant: Grease (Molywhite RE00) No-load running torque on the input shaft side (N-m) Speed ratio Speed ratio No-load running torque on the input shaft side (N-m) Speed ratio No-load running torque on the input shaft side (N-m) No-load running torque on the input shaft side (N-m) Speed ratio No-load running torque on the input shaft side (N-m) Speed ratio No-load running torque on the input shaft side (N-m) Speed ratio

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Output speed: 15 rpm Lubricant: Grease (Molywhite RE00) Loss at center gear is not included. Note: Unlike the RD-E series and the RD-C series uses no-load running torque on the output shaft side. No-load running torque on the output shaft side (N-m) No-load running torque on the output shaft side (N-m) No-load running torque on the output shaft side (N-m) No-load running torque on the output shaft side (N-m) No-load running torque on the output shaft side (N-m) No-load running torque on the output shaft side (N-m)

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