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Overview
Features
Typical Applications
Specifications
Downloads
Related Products
RU Series
Overview
RU Series

Sankyo servo indexing tables offer a constant lead cam with a servo motor drive for programmable motion. Our servo indexing tables provide fast highly accurate motion, with the added capability to move medium to heavy loads. Our preloaded cam & turret, provides a zero-backlash servo indexing table for all your automation needs. The RU Series servo indexing table is available in 11 different sizes. These servo indexing tables come with varying ratios to maximize the motor’s torque capacity, speed requirements and enhance the overall accuracy. Special applications may require double reduction ratio of the internal cam and an additional reducer to provide large torque capacities or slower speed.



RollerDrive CNC Technology

Features

Zero-Backlash
The RollerDrive uses a unique preloaded mechanism to completely eliminate backlash and deliver output motions that are faithfully true to input commands.
Design
RollerDrive technology incorporates a cam with a high gear reduction to deliver large torque capacities with smaller servo motors.
Second Reducer Option
Multiple reducer options keep the servo at optimal RPM speed.
Rigidity Suitable for Machining Applications
An exclusive ouput turret bearing and cast-iron housing toleratres heavy vibrations associated with machine tool applications.
Versatile for Retooling
RU Series can pace with the ever-changing tooling requirements.
Typical Applications

RU Series Application RU Series Application RU Series Application
RU Series Application RU Series Application RU Series Application

Specifications

The RU Series standard lubrication is oil for high speed applications. With an oil bath, one of the six housing mounting position must be specified (see catalog). Optional grease lubrication capacity is shown in (parenthesis) in the chart below. Grease lubrication units are maintenance-free and mount in any position.

Capacity Chart Oil Units ( ) denotes grease unit specifications

Sizes
RU40 RU63 RU80 RU100 RU125
Gear Ratio 15 20 20 20 20
Max acceleration torque start/stop
N·m
82 (67) 191 (155) 260 (211) 796 (647) 1,352 (1,098)
Static rated output torque
N·m
100 250 360 1,000 1,800
Maximum output speed
rpm
200 150 150 (125) 150 (100) 150 (80)
Nominal output speed
rpm
86 (60) 55 (40) 50 (35) 45 (30) 45 (30)
Position accuracy Standard accuracy model
arcsec or less
±45 ±30 ±20
High accuracy model ±23 ±15 ±10
Repeatability Standard accuracy model
arcsec or less
±10 ±7 ±5
High accuracy model ±5 ±3 ±2
Axial & radial
surface runout
Standard accuracy model
µm or less
10
High accuracy model 2
Allowable axial load output shaft
N
3,000 12,500 16,500 21,000 50,000
Allowable radial load output shaft
N
2,000 11,000 14,000 18,000 35,000
Allowable moment load output shaft
N·m
100 700 1,000 1,700 5,000
Product Weight
kg
9 20 35 50 95
Capacity Chart Oil Units ( ) denotes grease unit specifications

Sizes
RU160 RU200 RU250 RU315 RU400 RU500
Gear Ratio 24 30 30 32 36 40
Max acceleration torque start/stop
N·m
1,737
(1,410)
2,170
(1,760)
6,250
8,710 15,530 26,090
Static rated output torque
N·m
2,400 3,090 8,160 11,720
21,290 34,950
Maximum output speed
rpm
100 (60) 65 (40) 40 30 150 20
Nominal output speed
rpm
33 (25) 26 (20) 20 15 13 12
Position accuracy Standard accuracy model
arcsec or less
±20
High accuracy model ±10
Repeatability Standard accuracy model
arcsec or less
±5
High accuracy model ±3
Output shaft axial runout
Side V
Standard accuracy model
µm or less
10
High accuracy model 3 5
Output shaft axial runout
Side V
Standard accuracy model 10
High accuracy model 3 5
Allowable axial load output shaft
N
55,000 63,000 130,000 140,000 160,000 180,000
Allowable radial load output shaft
N
43,000 48,000 95,000 110,000 135,000 150,000
Allowable moment load output shaft
N·m
9,700 16,000 38,000 65,000 110,000 200,000
Product Weight
kg
140 180 380 660 985 1,585
Downloads
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Related Products
>> AD (Alpha) Series
Hollow table output
Max 48 index stops
with built-in gearmotor
>> RA Series
Small-medium load
Quick indexing
Lightweight aluminum housing

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