RV-E Series Robot RV Reducer

Description of E Series of RV Reducer

The MKD E series of RV reducer is a kind of reduction gearbox that centers with the flat specially designed for accurate motion control. This series of speed reducers are featured of a compact body, lightweight, and high rigidity which is strong enough to be against overloading situations. Besides, the advantages of free backlash, micro rotating vibration and low inertia guarantee rapid acceleration, ultra-precise positioning, and smooth movement. The precision gear RV series is an ideal speed reducer especially for precision mechanical control in the fields of machine tools, factory robots, assembly equipment, conveying machines, and other related fields that need precise positioning, high rigidity, and shock-load capacity.

The MKD RV-E reducer is also a kind of standard inline gearbox that provides high performance in an extremely compact and high rigid component configuration. The higher reliability and cost-effectiveness of RV-E robot gearbox thanks to the built-in angular ball bearings to support the external load. The rolling contact components ensure the RV-E gearbox high efficiency and long service life. Furthermore, a 2-stage reduction designed structure reduces the vibration and inertia greatly and at the same time increase the ratios. Besides, Belt/pulley configuration is also available for RV-E reducer.

The MKD RV E reducer is featured with high quality and high precision together with a 2-stage cycloidal design that contributes to high torque, big ratio and shock-resistant capability. RV-E reducer adopts rolling contact components to reduce abrasion and extend the service life. Besides, the specially designed pin and cycloidal gear mechanism reduce the backlash and at the same time provide higher impact resistance than traditional speed reducers. And the RV E cycloidal reducer integrates big internal angular support bearings which offer high moment capacity without the need for an external support device. The perfect gear structure design and powerful roller bearings support of the shaft ensure life-long service time and allow instant peak loads up to 5 times of the nominated torque. (e.g. for emergency stops)

Integrated angular contact ball bearings

Features:

• The reliability is improved.
• The total cost is reduced a lot.
• The construction of built-in angular ball bearings has the ability to support external loads, improve the moment stiffness and the maximum permissible moment.
• The number of required components is reduced.
• Easy to install.

2-stage reduction structure

Features:

• Vibration is reduced
• Inertia is reduced (GD²)
• Reduced vibration due to the low-speed rotation of RV gears
• The size of the motor coupling part (input gear) is reduced and therefore the inertia is lower.

All the main components are supported on both sides.

Features:

• Higher torsional stiffness
• Lower vibration
• Strong shock-resistant capability (5 times of the rated torque)

Remark: Crankshafts are supported on both sides of

the reduction gear as shown below.

Rolling contact components

Features:

• Outstandingstarting efficiency
• Longer service life and minimal abrasion
• The low backlash of 1 arcmin.
• Adoption of roller bearings.

Pin & gear structure

Features:

• The extreme low backlash of 1 arcmin.
• Higher shock load capability (5 times of rated torque)
• Achieve the synchromesh of more RV gear teeth and pins.

Robot Wrist Axis

As shown in the right figure, the input gear can also be supported within the reduction gear mechanism. Please contact MKD for more details.

Catalog of RV Reducer