Sankyo America (The Global Standard in CAM Indexing)

Sankyo America (The Global Standard in CAM Indexing)

Home - Flexible Servo Index - High-Accuracy (RA Series) - Specifications
Home
About Us
Rep Locator
Cam Indexers
Flexible Servo Index
High-Accuracy --
General Purpose --
High-Torque --
Part Handlers
Accessories
Assembly Chassis
Machine Tools
Coil Feeds for Presses
Technical Resources
Site Map
eNEWS
Downloads
Contact Us


Sign Up & Be Informed!

SANKYO RA Series Programmable Motion Rotary Table


SANKYO is the worldwide leader in rotary table positioning technology and continues to develop innovative motion control. Our core positioning system is based on our RollerDrive™ mechanism, a simple combination of a globoidal cam and cam followers mounted in a precision machined turret. A servo motor rotates a continuous lead cam profile and the rolling contact surfaces of the cam followers produce perfectly smooth and controlled motions without backlash.

Overview - High Torque - Dial Indexing - Indexing - Sankyo America Overview - High Torque - Dial Indexing - Indexing - Sankyo America < click to enlarge >

Advantages

Overview - High Torque - Dial Indexing - Indexing - Sankyo America < click to enlarge >

• Programmable output motions in forward, reverse or oscillating directions with ZERO backlash
• Standard ±20 to ±45 arc seconds angular positioning accuracy (housing size dependent, see chart below)
• Lightweight aluminum housing is perfect for robot end of arm tooling rotator
• Maintenance-free, grease filled units can mount in any position (high speed applications may require oil bath)
• Second inline reducer option can move very large loads with small inexpensive motors
• Precision output bearings design has large bending moment capacity
• Large output through bore with diameter tolerance in 5 housing sizes
• 1 year warranty
__________________________________________________

Output Flange Design

• Precision output bearings design has large bending moment capacity
• Standard output through bore has precision tolerance diameter
• Standard mounting flange surface runout is 0.01mm (0.0004 inches)

Overview - High Torque - Dial Indexing - Indexing - Sankyo America < click to enlarge >
__________________________________________________

Motor Drive Option

• Standard motor bracket adapts to any servo motor brand (customer supplier servo motor)
• Optional low backlash inline planetary reducer adapts to any servo motor brand (customer supplier servo motor)
• Optional low backlash right angle reducer adapts to any servo motor brand (customer supplier servo motor)
• Right angle reducer can be rotated in 90 degree increments
• Sankyo will provide sizing calculations for the servo motor brand of YOUR choice (no need to stock another servo brand)

Overview - High Torque - Dial Indexing - Indexing - Sankyo AmericaOverview - High Torque - Dial Indexing - Indexing - Sankyo America< click to enlarge >
__________________________________________________

Catalog & Drawing Downloads

Item
RA40
RA63
RA80
RA100
RA125
Catalog - Dimension Pages
PDF
Catalog - Full
PDF
Application & Sizing
-
CAD Drawing Download
-
Servo Motor Installation Procedures
PDF
RA Series User Manual
-

 

RA Series Input & Output Specification

Item
Unit
RA40
RA63
RA80
RA100
RA125
Max. Start/Stop Acceleration Torque
N*m
57.7
129.3
202.3
147.9
564.8
250.3
938.6
637.5
lb*in
510
1,144
1,790
1,309
4,998
2,215
8,307
5,642
Rated Static Output Torque for (emergency-stop)
N*m
100.4
240
360
1,010
1,820
lb*in
888
2,124
3,186
8,939
16,108
Dynamic Axial Output Load Capacity
N
999
1,657
3,302
3,724
8,178
lbf
2,202
3,653
7,279
8,210
18,029
Dynamic Radial Output Load Capacity
N
669
1,359
2,819
3,109
7,452
lbf
1,474
2,996
6,214
6,854
16,428
Dynamic Output Bending Moment Capacity
N*m
33
79
210
284
764
lb*in
292
699
1858
2513
6761
Maximum Output Speed - Oil Lubricant
RPM
200
150
100
150
100
150
100
Maximum Output Speed - Grease Lubricant
RPM
200
150
125
83.3
100
66.6
80
53.3
Nomimal Output Speed - Oil Lubricant
RPM
86.6
55
50
33.3
45
30
45
30
Nomimal Output Speed - Grease Lubricant
RPM
60
40
35
23.3
30
20
30
20

 

RA Series without 2nd Reducer Specifications

Item
Unit
RA40
RA63
RA80
RA100
RA125
RA Internal Cam Ratio
-
15:1
20:1
20:1
30:1
20:1
30:1
20:1
30:1
Angular Positioning Accuracy
arc sec
±45
±30
±20
Repeat Positioning Accuracy
arc sec
±10
±7
±5
RA Positioner Weight without 2nd Reducer
kg
2.5
5.6
11.6
21.5
36.3
lb
5.5
12.3
25.5
47.4
80.0

 

RA Series with 2nd Reducer Specifications

Item
Unit
RA40
RA63
RA80
RA100
RA125
Minimum RA & 2nd Reducer Ratio (1 stage)
-
45:1
60:1
Maximum RA & 2nd Reducer Ratio (2 stage)
-
525:1
2000:1
RA & 2nd Reducer Positioning Accuracy
arc sec
±51
±35
±25
Repeat Positioning Accuracy
arc sec
±16
±12
±10
RA Positioner Weight with 2nd Reducer
kg
3.2
7.2
13.2
25.7
40.5
lb
7.0
15.8
29.1
56.6
89.2

 

Why SANKYO
We make our own internal components, the rotary indexer globoidal cam & needle bearing cam followers are optimized to the largest size for each configuration. SANKYO components are ~30% larger than the competition.

Our success is simple; larger diameters transfer more torque & rotate fewer revolutions. More surface contact & fewer revolutions have less wear to inherently extend the service life. Smaller units perform the same task with less cost.

 

© Copyright Sankyo America, Inc. All Rights Reserved.
Submit Comments to Webmaster