RD-2
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Precision Reduction Gear RV Precision Gearhead

Contributing to Society with Our ‘Moving it. Stopping it.’ Technologies Nabtesco's technologies supporting society Nabtesco manufactures products which are used in everyday life. Our high-accuracy components are essential for moving objects; they may be rarely visible, but are the foundation of everyday objects that you see moving and wonder how. Nabtesco’s technologies are found throughout objects that move and stop people’ s lives. Do or s Ro bo ts Precision Reduction Gear RV™ precisely moves and stops industrial robots. Co ns tru cti on ma ch ine ry Running motors and control valves...

CONTENTSWho is Nabtesco? The key word of Nabtesco is ‘motion control.' We use our strengths in the fields of component and systems technologies to develop highly creative products. Through the Nabtesco Group as a whole, we can also utilize our advantage of expertise to maximum effect in order to further enhance these strengths. In the air, on land and at sea, we have a large share in various fields of both international and domestic markets. Nabtesco will continue to evolve by utilizing its strengths in many fields and by exploring the possibilities of the future. April 2002 Initiation of...

RD2: The gear that will change everything A highly developed Precision Reduction Gear RV that offers high quality, high performance and ease of use. TM Precision Reduction Gear RV Precision Reduction Gear RV™ enables the precision movements of industrial robots and also ensures their strength. Precision Reduction Gear RV™ has been praised for being compact and lightweight while offering high precision and rigidity. Since its debut in 1985, Precision Reduction Gear RV™ has been selected for use by most major industrial robot manufacturers around the world. Industrial robot

Precision GeSVhead Nabtesco took the Precision Reduction Gear RV™, which is highly trusted and valued in the industry and created the RD Series. The RD Series is a pre-lubricated model with a sealed structure that can be easily mounted on all major motors. The RD2 Series, a new version with three input configurations, offers customers dramatically expanded freedom of design. Motor fastener components

RD2 Series product line » Right angle input type Solid series

Right angle input type Straight input type Hollow shaft series Pulley input type number 2 Reduces the needed of components Pre-lubricated Our specialized, environmentally conscious lubricant RVGREASE™ LB00 3 Fluorine is used for all oil seals 5

Solutions from Nabtesco ■ Standard Epicyclic Gear Low contact ratio and low resistance to Use of pin/gear mechanism results in high contact impacts ratio and considerable impact resistance High reliability for your machine Typical gear is damaged by shock load ■ Typical equipment ■ RD2 Series Bearings and external support table are Integrated large-capacity needed i=> External bearings and support table are not needed More components Higher assembly cost Higher design cost Reduced number of components Reduced cost of assembly Reduced cost of design 6

■ Typical equipment Reduction gear thickness + motor length + space for motor removal Equipment needs increased space Cable routing is difficult ■ RD2 Series Only the thickness of the reduction gear itself Right angle and pulley models can be used for a lower profile Allows routing of cables. Hollow shaft series also available Improved layout Backlash: 1 arc.min for straight input and pulley input type 1.5 arc.min for right angle input type (except some models) High backlash leads to poor repeatability Highly precise positioning is p

Main applications Examples of Uses for the RD2 Series (for reference) ■ Positioner (tilting axis) ■ Glass Substrate/ Wafer Rotation and Positioning ■ Ball Screw Drive ■ Positioner (rotary axis)

Principle of operation 1. Rotation of the servomotor is transmitted through the input gear to the spur gears, and the speed is reduced according to the gear ratio between the input gear and the spur gears. Note: For the hollow shaft series, the rotation of the servomotor is transmitted from the input gear through the center gear to the spur gears.  Fig. 1. First reduction section Crankshaft 2. Since the crankshafts are directly connected to the spur gears, Spur gear they have the same rotational speed as the spur gears. 3. Two RV gears are mounted around the needle bearings on the...

Product code selection https://precision.nabtesco.com/ 1. Product Selection ● Select “Simple Product Selection” from “Product Selection”. You can designate the applicable model by simply clicking on the items in a sequence of five steps according to the product type and the motor for use. The motor can be selected in accordance with the watt value or from the series of the manufacturer of the motor for use. W ► hen you select the specified motor from the manufacturer, the display also shows the codes of the motor flange and the bushing that are applicable to the motor. 2. CAD Data Download...

Technical Information Option: Base flange Motor flange / bushing Pulley input type Right angle input type Straight input type

Straight Input Type

Straight Input code Torque code Series code C: Hollow shaft series Motor flange Bushing code 2-letter code of a numeric and an alphabetic characters ZZ: None (The code will differ depending on motor to be mounted.) Technical Information Option: Base flange Motor flange / bushing Pulley input type Right angle input type Straight input type

Rating table Straight input type Reduction Gear Model Code Ratio code (Reduction ratio value) Rated Torque No Rated Output Speed Life Rating Ts1 Allowable Startup/Stop Torque Ts2 Momentary maximum allowable torque Nin Allowable Input Speed (Note 2) Ns Allowable Output Speed (Note 2) To Reference value to outpui speed during continuous operation at rated torque Lost motion Start-up Efficiency M0 Allowable moment (Note 3) Wr Allowable radial load (Note 8) External Dimensions Input Unit Code : G0 -P.16 Input Unit Code : G1 - P.17 Input Unit Code : G0 -P18 Input Unit Code : G1 -P.19 Input Unit...