Sankyo America (The Global Standard in CAM Indexing)

Sankyo America (The Global Standard in CAM Indexing)

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Sankyo CD Series Rotary Indexer

 

Sankyo is the worldwide leader in rotary indexing technology and continues to develop innovation in motion control. Our core indexing system is based upon the roller gear cam mechanism, a simple combination of a globoidal cam and cam followers in a precision machined turret. The profile of the cam and the rolling contact surfaces of the cam followers produce perfectly smooth and controlled motions.

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

• Up to 300 cycles per minute in continuous or on demand duty cycle
• ±30 to ±72 arc seconds angular indexing accuracy (housing size dependant, see chart below)
• ±7.5 to ±18 arc seconds repetitive accuracy (see chart below)
• Totally maintenance-free and sealed for life
• 1 year warranty
• Operates in forward or reverse directions (can be used as an oscillator)
• 2 through 48 output stops (others are available)
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3.8CD Output Flange Design

• Dual precision needle bearings design has large bending moment capacity
• Standard shaft has a flat (no keyway) for installing an optional output clutch with (4) set screws
• Optional output torque limiting clutch (as shown below)

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

4.5CD to 14CD Output Flange Design

• Dual tapered bearing design has large bending moment capacity
• Standard keyed shaft with tapped holes for installing an optional output clutch
• Standard flange with tapped holes for dial mounting (shorten shaft to 10mm for centering pilot)
• Optional output torque limiting clutch (as shown below)

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

• Standard geared motor is IP44 rated with 230/460 dual voltage (3.8, 4.5 & 6CD is only single voltage)
• Optional servo motor drive is available for frequent cycling
• Optional brake motor for emergency stop applications
• Optional IP65 wash-down with epoxy paint
• Optional reducer with C or IEC frame motor mounting adapter
• All mount in 90° increments on either side of the rotary indexer
• All are maintenance-free (except for brake motor)
• VFD controller voltage options are 120/1, 220/1, 230/3 or 460/3

Overview - High Torque - Dial Indexing - Indexing - Sankyo AmericaOverview - High Torque - Dial Indexing - Indexing - Sankyo America
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Cycle on Demand Timing Cam Option

• Optional timing cam proximity switch provides a signal to the PLC to stop the indexer motor for cycle on demand
• Standard PNP format, IP67 proximity type switch has detachable cable (NPN is available)
• Timing cam flag is adjustable for advance signals
• Up to 2 complete sets with proximity type or 3 sets with photo eye type
• Standard steel painted cover protects from false signals & human interface

Overview - High Torque - Dial Indexing - Indexing - Sankyo America Overview - High Torque - Dial Indexing - Indexing - Sankyo America
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TF/TC Series Output Torque Limiting Clutch Options

• TF series below includes a flange and centering pilot for mounting dial plates, fixtures or sprockets
Overview - High Torque - Dial Indexing - Indexing - Sankyo America

• TC series below is designed to couple shafts with up to 3 degrees angular error or non-parallel compensation
Overview - High Torque - Dial Indexing - Indexing - Sankyo America

• Both feature easy adjust torque range in just seconds without disassembly
• Both have automatic reset every 360 degrees within ±15 to ±30 arc seconds angular positioning accuracy
• Both have ball or roller detent design to respond quickly to protect the indexer
• Both have interchangeable springs for various torque ranges
• Optional overload detection prox mounts on indexer stationary flange (shown below)

Overview - High Torque - Dial Indexing - Indexing - Sankyo America

 

Catalog & Drawing Downloads

Item
3.8CD
4.5CD
6CD
7CD
8CD
11CD
14CD
17CD
Dimensional Catalog
Full Catalog
Application & Sizing
CAD Drawing
Timing Cam Setup Procedures
CD Series User Manual

 

Specifications

Item
Units
3.8CD
4.5CD
6CD
7CD
8CD
11CD
14CD
17CD
Output Incremental Stops
-
2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 30, 32, 36, 40 & 48 are standard (other are available)
Cycles per Minute
RPM
~66 with VFD in cycle on demand mode or 0~300 continuous
Nominal Dial Plate or Fixture Size
mm
304
360
480
560
640
880
1120
1360
in
12"
14"
19"
22"
25"
35"
44"
54"
Indexing Accuracy
arcsec
±72
±60
±45
±30
Repeat Accuracy
arcsec
±18
±15
±10
±7.5
Accuracy Conversion
±30 arc seconds equals ±0.0029" on a 20" radius (pi/180/3600*30 arcsec*20" radius= ±0.0029")
Axial Load Capacity
N
490
1,274
1,372
2,156
3,234
5,488
6,880
7,448
lbf
110
286
308
484
727
1,233
1,546
1,674
Radial Load Capacity
N
490
1,372
1,392
2,940
4,116
6,860
7,860
8,722
lbf
110
308
313
660
925
1,542
1,766
1,960
Bending Moment Capacity
N*m
16
33
34.3
63.7
80.8
220
255
353
lb*in
141
292
303
563
715
1,947
2,256
3,124
Weight - Indexer Only
kg
3.6
7.2
13.0
18
33
61
120
200
lb
7.9
15.8
28.6
39.6
72.7
134.5
264.5
440.9
Weight - Geared Motor Only
kg
3.4
4.0
4.0
10.0
11.5
25
35.1
52.1
lb
7.5
8.8
8.8
22.0
25.5
55.1
77.3
115.0
Weight - Indexer + Geared Motor
kg
7.0
11.2

17.0

28
44.5
86.0
155.1
252.1
lb
15.4
24.6
37.4
61.6
98.2
189.6
341.8
555.9

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.

 

 

 

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