RollerDriveCNCTM - Sankyo Automation · unclamp time and requires no energy like conventional hydraulic/air systems. Combined, the distortion-free performance and no-clamp ... Turret

The Zero-Backlash CNC Rotary Table

Precision. Quality. Reliability.

RollerDrive CNCTM

AUTOMATION

The Zero-Backlash CNC Rotary TableRollerDrive CNCTM

2

The answer for a CNC rotary axis

Pure Motion By Zero-Backlash Technology

No Clamp Operation

Perpetual Precision

RollerDrive motion

Actual motion with distortion pronedrives

Dis

plac

emen

t D

ispl

acem

ent

Time

Time

CNCRollerDrive TM

The RollerDrive CNC, a CNC rotary table, is designed to fulfill the demands of the latest machine tools for increased speed and precision. Inside, the RollerDrive CNC uses a RollerDrive, our zero-backlash reducer which transmits motion without distortions while staying robust against external forces unlike existing gears and torque motors. The high precision and rigidity achieved by the zero-backlash technology gives the RollerDrive CNC a rotational accuracy of less than ±10 arc sec. and repeatability of less than ±4 arc sec., and remains robust while doing heavy cutting work on hard metals.

The RollerDrive CNC does not require a clamp operation due to its mechanically rigid zero-backlash structure. This eliminates clamp and unclamp time and requires no energy like conventional hydraulic/air systems. Combined, the distortion-free performance and no-clamp design delivers ultra fast positioning that leads to higher productivity. For instance, a typical 90-degree rotation can be done within 0.4 seconds.

The unique mechanism of the RollerDrive makes the RollerDrive CNC capable of withstanding years of operation without internal part wear or loss of precision. Regular calibration or readjustment work is unnecessary for the RollerDrive CNC.

Overview

3

RollerDrive CNCTM

Mechanism

Output angle

0 90 180 270 360-0.02

-0.01

0.01

0

CNC

Typical worm gear rotary table

Output angle

Err

orE

rror

0 90 180 270 360-0.02

-0.01

0.01

0

RollerDrive

CW

CW

CCW

CCW

Approved Performance

Performance By Zero-Backlash Technology

Be Distinctive

by Sankyo Automation

TM

The main part of the RollerDrive mechanism consists of an input shaft and an output turret in which roller followers are embedded. An integral cross-roller bearing supports the output turret with minimal run out.

Preloaded roller followers contact the input rib surfaces with a wedge-shaped cross section, which can be adjusted by moving the input axis, to eliminate backlash completely. No backlash means superior precision and stiffness for both CW and CCW rotation, as shown on the diagram to the right.

Even with preload and zero-backlash, the needle-bearing type roller followers transmit power by rolling rather than sliding making it possible for the RollerDrive to achieve an outstanding efficiency of 90% or more and life-time wear-free durability.

All parts are made from only qualified alloy steels, and machined and ground with our ultra-precision machining system.

RollerDrive product series are widely used in various industries that require the highest in performance levels. Machine tool companies are not an exception and RollerDrive technology is already being applied to the world’s leading machine tools.

The “RollerDrive QUALITY” logo encompasses rotary axis speed, precision, and mechanical stiffness - essential performance qualities for standing up to heavy cutting work. This logo is available to RollerDrive users to make their applications distinctive in their market. Contact Sankyo Automation for details on the use of this logo.

4

Overview

Exclusive Zero Backlash Structure

Roller followers Roller gear cam (input)

Turret(output)

Features• No backlash• Power transferred by rolling contact eliminates wear• High accuracy and good efficiency• Preloadable for high rigidity

Rolling contact Preload

Stud

Outerraceway

Roller gearcam surface

Needles

Preload Mechanism Internal Construction of the Roller Follower

• Worm gear modelsMaintenance costs occur once or twice a year to adjust the backlash.

• RollerDriveLong-term use is possible without any mechanical maintenance.Beats the cost of a worm gear even after adding annual running costs to the initial investment cost. Price performance continues thereafter.

Cost Comparison Versus Worm Gear Rotary TableOffers Long-term Use Low Maintenance

$20,000

$10,000

01 2 3 4 5 6 7 Year

Cost simulations are based on a table diameter of about 200 mm.

Initial Cost versus Annual Maintenance Costs

Worm gearrotary table

Roller drive

Cost becomes less than theworm gear table in three years.

• Worm gear modelsAccuracy declines over time. Requires maintenance to achieve initial accuracy.

• The RollerDriveAccuracy is consistent with no maintenance even after 5 million operation cycles. (Requires regular oil changes)

Consistent long-term accuracy without need forbacklash adjustment.

30

20

10

00 1 Million 2 Million 3 Million 4 Million 5 Million

Operating cycles

Positioning Accuracy Aging Test

High

Low

Positioning E

rror

The RollerDrive graph is based on internal testing.

（arc sec）

Maintenance

Maintenance

Worm gear rotary t

able (example)

RollerDrive

Requiresmaintenanceat regularintervals

Drop in accuracy overtime

Consistent long-termaccuracy withoutmaintenance.

Based on internal calculations.

Low Maintenance and Excellent Price Performance

① Worm gear rotary tables require maintenance twice a year.② Assumes an annual running cost of 3% (oil changes, etc.) for both types.

5

Servo Motor

Preload + Rolling contact achieveszero-backlash and long life

Outstanding rotating accuracy and rigiditywith the integrated cross roller bearing

Shock resistant, high-performancecam followers

Overview

Model Line Up & Applications

6

Cutting tool grinding: Higher accuracyby Zero-backlash movement

Automotive parts： Improvingproductivity by high rotational speed

Molding parts: High speed &accurate continuous cutting

Medical parts: Compact 5 axis

Turbine blade: High accelerationprocessing

Applications

Model Line Up & Applications

7

Model Line Up

RCCRobust, Versatile 4-Axis Table

Spec.→P8

VERTICALHORIZONTAL

TABLEφ400

TABLEφ320

TABLEφ250

RSCompact, High Speed 4-Axis Table

Spec.→P10

VERTICAL

TABLEφ240

TABLEφ200

TABLEφ170

TABLEφ100

RTCompact, High Speed 5-Axis Tilting Table

Spec.→P12

TILTING

TABLEφ100

TABLEφ80

Auxiliary Equipment Spec.→P15-18

SUPPORT TABLE ROTARY JOINTTAIL STOCK

TABLEφ200

TABLEφ170

TABLEφ160

RCC Specifications

8

1

RCC170RCC200RCC250RCC320RCC400

ABCX

RL

SB

1（See Dimensions

diagrams）

E CJ (Built-in)H (External)

RCC2001

L -- 2C

3B

41

5E

6C

7J

8

Model

2

Servo motormounting side

3

Servo Motor

4

Connector Encoder Hydraulic ClampOption

Rotary joint

5 6 7 8

Table

2. Servo motor mounting side

R

L

3. Servo Motor

A

Manufacture

FANUC

MITSUBISHI

SANYO

B

C

D

X

E

Ask Sankyo for mounting other motors

4. Connector

S

B

Model Code

SpecificationsTable diameter mm

mm

mm

arc.sec

rpm

arc.sec

Table reference bore diameter

Center height

Maximum table speed

Repeatability

Net weight

Gear ratio

RCC170φ170

φ65 H7150

75

870

1/60

RCC200φ200

φ75 H7165

75

4100

1/60

Indexing accuracy ±15 ±10

Loading Characteristics

Allowable payload

Maximum output torque

Continuous holding torque

Allowable bending moment

Allowable axial load

Upright position

Allowable inertia moment

Allowable load

Horizontal position

kg

N

N・mN・m

N・m

kg・m2

RCC170

16012740

168

287

598

80kg

RCC200

20015789

286

524

948

100

1.0 1.2

kg

Options

Output rotary encoder

External rotary joint (number of ports)

Hydraulic clamper torque (N•m/6Mpa)

RCC170

66+1

RON/RCN200(HEIDENHAIN)

350

Built-in rotary joint (number of ports)

RCC200

66+1

450


* These specifications are for reference purposes only, please contact Sankyo for detailed specifications.Contact Sankyo if you wish to use a different motor. Maximum output torque should not exceed 10 seconds or 20% duty cycle.

Depends on which motor is mounted.※1

※2

※2

※2

※1, ※2

RCC250φ250

φ110 H7210

75

4170

1/60

±10

RCC320φ320

φ165 H7255

50

4280

1/60

±10

RCC400φ400

φ200 H7300

50

4410

1/60

±10

RCC250

25037420

528

1003

2210

120

2

RCC320

35056000

768

1481

3550

180

4.5

RCC400

50074220

1368

2675

8135

250

10

RCC250

46+1

990


RCC320

46+1

1200


RCC400

46+1

2600


Robust, Versatile 4-Axis Table

RCCseriesFeatures・ Best In-Class Accuracy・ Robust Design・ High Speed Rotation

RCC series tables offer robustness with the versatility to be mounted and used verticallyor horizontally. Options include internal or external rotary joints and hydraulic clamping.

RCC Dimensions

9

RCC170

RCC200

RCC250

RCC320

RCC400

Connector code S Connector code B Table center bore18

217825 30

φ85

φ65H

7

（φ6

6）

φ65H

8265

150

25

1010

2520

20 25

5169180

φ170

203100

430

（8）M5, 8DP

（8）M8, 16DP

Air purge outlet(Reverse side)

（8）M8, 16DP

φ150φ100

20

2025

1012

169180

φ170

Connector code S Connector code B Table center bore192180.5

φ200

2010

1025

20 25

φ75H

7

（φ7

6）

30 35 φ85

φ75H

8

190 2（8）M5, 10DP

20

474242

120

285

2516

523

（8）M10, 20DP（8）M8, 16DP


φ100

φ172

φ200

180.5192 17

1019

2520

Connector code S Connector code B Table center bore

25 30

25 30

1515

15

24

215203290

145

355

3021

0

φ250

597

（8）M10, 20DPAir purge outlet(Reverse side)

20φ110

H7

34 （φ1

26）

φ138

φ125

H8

1214（6）M6, 12DPφ150

21 15

2530

21215203

φ250


15

25 30

25 30

15

15

37

360

φ320

180

660

3025

544

0

235220


（8）M12, 24DP

φ 195 1234

φ165

H7 25

φ165

H8

φ180

φ166

39

（6）M8, 16DP

1515

2530

φ320

22235220


210420

794

300

510 φ400

280240

30 40

30 40

5

1818

15

（8）M16, 232DP


φ 240

φ220

φ200

H7

（φ2

01）

53

φ200

H8

279 1

30

（6）M10, 20DP

3040

18 18

22240

280

φ400

RS Specifications

10

Model Code

Servo Motor Motor mounting side Connector

1

RS100RS170RS200RS240

ABCDEX

RL

SB E J

OptionsBuilt-in rotary joint (number of ports)


RS100

4

MPI-536A(MPRZ-536A)(MITSUBISHI)

RS170

5


RS200

5


RS240

5


RS1701

A- -2L

3S

4E

5J

6

Model

2

Servo Motor

3

Motor mounting side

4

Connector Encoder Rotary joint (built-in)

Option5 6

A

Manufacture

FANUC

MITSUBISHI

YASKAWA

SANYO

-

B

C

D

X

E


R

L

S

B

* If the unit is mounted with an encoder, hydraulic clamp, or rotary joint, the hollow bore table is not available.

SpecificationsTable diameter mm

mm

mm

arc.sec

rpm

arc.sec

kg


Center height

Maximum table speedIndexing accuracy

RepeatabilityNet. weight

Gear ratio

RS100φ100

φ50 H7125

75±158

38

1/60

RS170φ170

φ80 H7115

75±158

44

1/60

Loading characteristicsAllowable payload

* Maximum holding torque



Allowable axial loadUpright position

Maximum moment of inertia

kg

N

N・mN・m

N・m

kg・m2

* These specifications are for reference purposes only, please contact Sankyo for detailed specifications. Maximum output torque should not exceed 10 seconds or 20% duty cycle.

Allowable load

RS100

6016148

267

290

0.50

40

RS200

10670286

437

1250

1.20

100

RS240

11580404

631

1591

2.00

120

RS240φ240

φ130 H7132

55±104

72

1/90

RS200φ200

φ100 H7125

75±104

56

1/60

RS170

9083168

287

900

0.60

80

Compact 4-Axis Table

RSseriesFeatures・ Oversized bore・ Low profile; compact size・ High-speed rotation

RS Series tables offer a combination of compactness with high torque.Used for many applications from small tapping centers to machining centers.

RS Dimensions

11

RS100 RS170

RS200 RS240

（8）M6, 12DP

145

140

φ100

346

200

125

20

80

85

（8）M8, 16DP

25

215

115

100

386

130

（8）M8, 16DP

φ200

155

160

110

413

25

125

235

160

（8）M12, 22DP

180

140460

φ240

257

132

25

205

210

φ170

150

145

0.5159.5

30

φ80

φ85

φ100

H7

14H7

5

202020

2515 5

14H7 1020

202525

14H7

5

153025

1020

φ130H7

φ120

14H7

5

2020

2525

φ43H

8

34111

529.5

φ25

φ50H

7

0.5149.5

30

φ75

φ70

φ80H

7φ1

30H

7

φ120

φ121

H8

39

199 6

20

RT Specifications

12

Model Code

Servo Motor Motor mounting side Connector

1

RT080RT100RT160

ABCDEX

RL

SB E J

RT1001

A- -2L

3S

4E

5J

6

Model

2

Servo Motor

3

Motor mounting side

4

Connector Encoder Rotary joint (built-in)

Option5 6

A

Manufacture

FANUC

MITSUBISHI

YASKAWA

SANYO

-

B

C

D

X

E


R

L

S

B

* If the unit is mounted with an encoder, hydraulic clamp, or rotary joint, the hollow bore table is not available.

Specifications

Table diameter

Tilting angle deg

mm

mm

mm

mm

arc.sec

rpm

arc.sec

kg


Center height at 90 degree

Table surface height at 90 degree

Maximum speed

Indexing accuracy Rotary axisTilt axis

Repeatability

Net. weight

Gear ratio

RT080-20～＋120

φ80

φ30 H7

1151/48

6350±20±1588

1/60

70

165

RT100-20～＋120

φ100

φ40 H7

1321/48

10075 (55)

±15±1084

1/60 (1/90)

91

197

Options

Built-in rotary joint (number of ports)


RT080

-

-

RT100/RT160

2


-MPI-736A(MPRZ-736B)

(MITSUBISHI)

Loading characteristics

Allowable payload

RT080

3760

10

62

127

141

0.01

RT100

6016

30

118

213

290

0.10

Maximum output torque



Allowable axial load


kg

N

N・m

N・m

N・m

kg・m2

* These specifications are for reference purposes only, please contact Sankyo for detailed specifications. Maximum output torque should not exceed 10 seconds or 20% duty cycle.

Rotary axisTilt axis

Rotary axisTilt axis

Rotary axis Tilt axis

Allowable load

Rotary axis Tilt axis

Compact 5-Axis Tilting Rotary Table

RTseriesFeatures・ Unique open-end design for small footprint・ High-speed rotation

RT Series tables are perfect for contouring due to zero-backlash technology. The open-end design coupledwith speed and accuracy is suited for many applications from tapping centers to machining centers.

RT160-20～＋120

φ160

φ70 H7

1701/48

10050±15±1084

1/72

220

245

RT160

8762

60

172

380

858

0.40

RT Dimensions

13

RT080 RT100

RT160

(With motor on right) (With motor on right)

9043

φ186

φ80

2025

2010

（6）M5, 8DP

53

8514

545

328

R59.550

26

25

115

165

100

386

221

20°120°

14H7

5

0.5

89.5

8.5

φ30H7

Max workpiece dia.100 mm

φ26 ＋0.1−0.1

φ27


120

φ100

φ230

25

2020

0.5

119.

5

1815

φ40H8

φ40H7


φ41

125.

5

88.5

180

378

R80 84

（8）M6, 12DP

112.5

2525

140

19725

7

460

132

20°120°

18H7

5

10 5

2525

RT100

Product Specifications

14

Top Motor Mount CNC Rotary Table

167 170

19220043.5221.5

393

200

550

φ252

83

365

200

170 200370

φ252

75.5 189.5359.5

DXB25 TS250

*1. The allowable payload assumes the use of support TS250.

Specifications

Table diameter mm

mm

arc.sec

min−1

arc.sec

kg

Center height

Maximum table speed

Indexing accuracy

Repeatability

Net. weight

Gear ratio

DXB25

φ252

200

40

±10

4

1/80

220

kg

kgm2

Allowable payload


300

8.5

NmHydraulic clamper

Built-in rotary joint (# of ports)

1200

8 + 1

Output rotary encoder MPRZ-736B

TS250

φ252

200

40

140

8 + 1

Support Table

Auxiliary Equipment

15

Mounting Accessories

Specifications

Series Size

170

200

250

320

400

100

170

200

240

80

100

160

Mounting Type

e

f

c

c

d

a

b

b

b

b

b

b

Qty. Used

2

4

4

4

4

2

4

4

4

4

4

4

RS

RCC

RT

Dimensions for Each Type

abcdf type e type

F

A

D

B

C

E

F

C

D

E

BA

* T-nut and hex bolts not included

G

H

G

14 drill

14 drill

14 drill

18 drill

18 drill

18 drill

DimensionsMounting Type

a

b

c

d

e

f

A

30

30

30

35

25

35

B

35

40

50

66

40

40

C

15

15

20

26

15

15

D

45

45

45

57

55

53

E

35

35

30

39

44.5

38

F G

15

15

15

20

15

19

H

－

－

－

－

20

－

Auxiliary Equipment

16

Support Table

Dimension Drawings

Tailstock

TM115

TM125

TM132

TM150

TM165

TM210

TM255

TM300

115

125

132

150

165

210

255

300

A

115

125

132

150

165

210

255

300

B

270

270

270

352

352

352

352

398

C

115

115

115

180

180

160

160

220

D

85

85

85

105

105

105

105

135

E

32

32

32

44

44

44

44

46

G

180

180

180

270

270

270

270

295

H

18

21

21

33

33

33

33

43

J

14

14

14

14

18

18

18

18

M

MT#2

MT#2

MT#2

MT#3

MT#3

MT#3

MT#3

MT#4

F

φ100

φ100

φ100

φ100

φ100

φ100

φ100

φ150

RS170

RS240

RCC170

RCC200

RCC250

RCC320

RCC400

RS100,RS200

Model(Tentative)

Center height Applicablemodel

Size

M

F

H

E

DB

G

A

JC

100

170

200

240

RS

125

115

125

132

SS110

SS110

SS110

SS110

15

5

15

22

SS150

SS210

150mm

210mm

Center height

450N・m

1700N・m

Clamping torque

16.4（19.3）kg

57.5（62.5）kg

Product weight

Model Code Example for RCC SeriesSS150-C-H165 (For the RCC200 with clamp)SS150-H150 (For the RCC170）

150

235

220250

3464

φ66H

7φ1

50h7

φ60

φ55H

7φ7

0

13

38

φ162

10

115

44

14h7

φ100

Clamping torque 450Nm/6Mpa

（8）M6, 12DP

4-φ14

（4）M6, 12DP

Dimensions with clamp 　Dimensions in ( ) are without clamp

(105)

(φ60

H7)

(φ80

)

RC1/4Hydraulic inlet

R 7

φ120

18h7

24

150

64

φ100

φ115

H7

φ170

φ110

H7

8015110

345

330300

φ250

210

φ150

50

12H7

19

20

8 Clamping torque 1700Nm/6Mpa

（8）M10, 20DP

4-φ14

（6）M6, 12DP

T-slot details +10

φ150

φ21 5

170

200

250

320

400

RCC

150mm

165mm

210mm

255mm

300mm

SS150

SS150

SS210

SS210

SS210

15mm

30mm

20mm

65mm

110mm

Series Size Center heightSupport spindleWithout clamp

Spacerthickness [mm]

SS110 110mm 10 kg

SS150

SS210

SS110

3415

64φ

120

φ45

φ40

104

308

110

25

65

180

210

14

5

4－14

8－M6

R62.5 100

Auxiliary Equipment

17

Rotary Joints

RCC

RS

RT

666664555−22

Actuation fluid:Hydraulic pressure 6 MPa

Actuation fluid:Air 0.7 MPa

External

Built-In

Specifications

Size

Maximum actuation pressure

Built-In External

Max number of ports

Model

* 1 The +1 indicates the port that in the center bore.

* 2 Make sure to furnish a line filter in the air supply line.

* 3 Under prolonged used, a small amount of actuation oil may leak from an oil port toward the adjacent air port. If possible, the adjacent ports should be left open for use as drain ports.

17020025032040010017020024080100160

6+16+16+16+16+1−−−−−−−

ABC D

EF

GOutport

Rc1/4Inport

A

B

EC

FD

VIEW A

200

A

Mounting hole dimensions

φ8.2

1.4±0.05

φ4

60°

Outport

40

6-Rc1/4Inport

E

RCC250, 320, 400

Mounting hole dimensions

Outport

ABC

D EFGH

I

Rc1/4Inport

ABC

DE

F

GH

I

48-55

E

φ12.

2

φ6

1.4±0.05

RCC170, 200

RCC170 - RCC400

Auxiliary Equipment

18

Compatible Servomotor ModelsModel FANUC

RCC series

RS series

RT series

RCC170

RCC200

RCC250

RCC320

RCC400

RS100

RS170

RS200

RS240

αiF2/5000

αiF4/5000

αiF8/3000

αiF12/3000

αiF22/3000

αis2/5000

αis2/5000

αis4/5000

αis4/5000

βis1/6000

βis1/6000

αis2/5000

αis4/5000

αis4/5000

αis8/4000

MITSUBISHI

HF105BS

HF104BS

HF154BS

HF204BS

HF303BS

HF-KP43JW04-S6

HF-KP43JW04-S6

HF-KP73JW04-S6

HF-KP73JW04-S6

HF-KP43JW04-S6

HF-KP43BJW04-S6

HF-KP43JW04-S6

HF-KP73BJW04-S6

HF-KP73JW04-S6

HF154BS-A48

YASKAWA

SGMAH-04A2A2S

SGMAH-04A2A2S

SGMAH-08A4A2S

SGMAH-08A4A2S

SGMAH-04A2A2S

SGMAH-08A4A2D

SGMAH-08A4A2SJ

SGMAH-08A4A2D

SANYO

R2AA08075FCP

R2AAB8100FCP

R2AA08040FCP

R2AA08040FCP

R2AAB8075FCP

R2AAB8100FCP

R2AA06040FXP

R2AA08075FCP

R2AAB8075HXP

R2AAB8100FCP

OKUMA

BL-ME24J-50SB

BL-ME40J-40SB

BL-ME80J-40SB

BL-ME120J-40SB

BL-ME200J-30SB

RT080

RT100

RT160

Rotary axis

Tilt axis

Rotary axis

Tilt axis

Rotary axis

Tilt axis

Rotary Joints

Built-InRT100

11.25 °

φ50

+0.0

25 0

φ40

+0.0

25 0

φ41

15

50

22

3.5 66.5

φ64

2-Rc1/8

� �

1.4 ± 0.05

φ10

.2+0

.05

0

11.25 °11.25 °

Built-InRS100, 170, 200, 240

Figure applies to models RS100 & RS240.The RS170 and RS200 have a different shape at d and f.

g

c

a fb e

d

h

10＋0.05 0φ1

2.2＋

0.05

0

1.4 ± 0.05

Model aφ50 +0.025/- 0φ80 +0.03/- 0φ80 +0.03/- 0φ80 +0.03/- 0

bφ24

φ30

φ30

φ30

RS100

RS170

RS200

RS240

c90°

72°

72°

72°

d e12

-

-

26

φ70

φ80

φ80

φ80

fφ90

-

-

φ184

g90°

72°

72°

72°

h4-Rc1/4

5-Rc1/4

5-Rc1/4

5-Rc1/4

Size (mm)

Accuracy Specifications

19

RCC & RSNo. Measurement Method RS100 RCC320 RCC400

RS170RCC170

RS200RCC200

RS240RCC250

1

2

3

4

5

6

7

8

9

Straightness of table top

Runout of table top

Runout of table reference bore

Indexing accuracy

Repeatability

Perpendicularity betweentable top and reference

surface for upright mounting

Parallelism between rotary axisand guide blocks for reference


Deviation between rotary axisand guide blocks for reference


Parallelism between rotatingcenter and reference surface

for upright mounting

0.015mm

0.01mm

0.01mm

±15arc.sec

8arc.sec

0.02mm

0.02mm /150ｍｍ

0.02mm /150ｍｍ

0.02mm(must not lean forward)

0.015mm

0.01mm

0.01mm

±15arc.sec

8arc.sec

0.02mm

0.02mm /150ｍｍ

0.02mm /150ｍｍ


0.015mm

0.01mm

0.01mm

±10arc.sec

4arc.sec

0.02mm

0.02mm /150ｍｍ

0.02mm /150ｍｍ


0.02mm

0.01mm

0.01mm

±10arc.sec

4arc.sec

0.02mm

0.02mm

0.02mm


0.02mm

0.01mm

0.01mm

±10arc.sec

4arc.sec

0.02mm

0.02mm

0.02mm


0.02mm

0.01mm

0.01mm

±10arc.sec

4arc.sec

0.02mm

0.02mm

0.02mm


RTNo. Measurement Method RT080 RT100

1

2

3

4

5

6

7

8

Straightness of table top

Parallelism between table top andbottom surface of base

Runout of table top

Runout of table reference bore

Indexingaccuracy

Repeatability

Rotary axis

Rotary axis

Tilt axis

Tilt axis

Parallelism between tilt axis center lineand bottom surface of base

Perpendicularity between tabletop and guide block

0.01ｍｍover full length


0.01mm

0.01mm

0.01mm

8arc.sec

0.02mm

8arc.sec

±15arc.sec

±20arc.sec



0.01mm

0.01mm

0.01mm

8arc.sec

0.02mm

4arc.sec

±10arc.sec

±15arc.secIndexingaccuracy

Repeatability

RT160



0.01mm

0.01mm

0.01mm

8arc.sec

0.02mm

4arc.sec

±10arc.sec

±15arc.sec

Technical Information

20

This indicates the percent of input power which is transmitted to the output. The motion mechanism has high efficiency because it employs rolling contact. Efficiency varies depending on conditions such as load torque, rotation speed and temperature.

In the , all rotating elements operate in a state of rolling contact, and thus there is almost no wear, or degradation in accuracy over time.

There is almost no change in positioning accuracy after testing operation (5) million times, and this shows that the outstanding accuracy of the can be maintained over the long term.

EfficiencyRCC250

Effi

cien

cy［％］

Torque［N・m］

02000 400

5 rpm

Output rotation speed

10 rpm20 rpm50 rpm

10

20

30

40

50

60

70

80

90

100

DurabilityTest of changes in RollerDrive positioning accuracy over timeRollerDrive ®

Exactness, forward direction（CCW）

Exactness, reverse direction（CW）

Repeat accuracy, forward direction（CCW）

Repeat accuracy, reverse direction（CW）

0

10

20

30

Out

put p

ositi

onin

g ac

cura

cy［ar

c. s

ec.］

Number of operations (Times)

Test Conditions

RollerDrive size

Output load weight

Output load moment of inertia

Output rotation angle

Output maximum rotation speed

Acceleration time

Constant speed time

Deceleration time

RCC250 class test machine

152 kg（φ500mm）

4.69 kg・m2

0-345 degree（Reciprocating）

100rpm

0.100 sec

0.475 sec.

0.100 sec.

RollerDrive®

0 620,000 1,320,000 1,500,000 2,000,000 2,700,000 3,000,000 4,000,000 5,000,000

RollerDrive®

RollerDrive®

Technical Information

21

Backlash, Lost Motion & Hysteresis Loss

General Hysteresis Graph

Rated torque

Rated torque

Lost motion

Torque acting on output

Tors

ion

angl

e

Torque acting on output [N•m]

Tors

ion

angl

e [ra

d.]

y

Backlash

Hysteresis loss

−3％＋3％ 50％

−0.0003−100 −50 0 50 100

0.0003

−0.0002

0.0002

−0.0001

0.0001

0.0000

Hysteresis GraphRollerDrive ®

x

Backlash Rotation angle which can arise even with zero torque (looseness)Lost motion Torsion angle of the midpoint of the hysteresis curve width which arises when applying ±3% rated torqueHysteresis loss Torsion angle where there is no complete return, when torque is applied in both forward and reverse directions

RCC250

−＋

RollerDrive ®

For a general reducer, the hysteresis graph can be obtained by applying torque to the output shaft, and plotting the generated torsion angle.

Backlash, lost motion and hysteresis loss can each be defined from the hysteresis graph, as indicated above.

Lost motion and hysteresis loss depend on the material characteristics, and occur in all types of structures. Backlash, on the other hand, occurs only when there are gaps or looseness in the structure. Backlash has a major effect on accuracy, servo gain and similar factors, and must be minimized.

With , backlash is completely eliminated using our unique preload structure, and lost motion and hysteresis loss are controlled to extremely small values due to the results of research on optimizing materials and structures.

22

Precautions

General Precautions

Notes On Air Supply

Lubrication

Grinding Machine Applications

Maximum Rotation Speed

OU

T

IN

AC20C-01CG(SMC)(Pressure Gauge G36-2-01)

Air combination

Sankyo's CNC Circular Table comes standard equipped with an air purge outlet. (Use it to blow out condensation and coolant to prolong the life of electrical parts and prevent rust in the motor housing.) Supply clean air for the air purge by referring to the drawing shown to the right.(Do NOT block the exhaust outlet.)

Sankyo's CNC Circular Table uses an oil bath to protect the internal mechanisms and maintain reliability. Refill and perform oil changes regularly using the oil listed in the instruction manual.

When used in grinding machines, the seal device on the outer periphery of our table may become damaged. The warranty does not cover any such damage.

The maximum rotation speed for he table given in the specifications refers to the indexing speed. Consult with Sankyo if the table is to be rotated continuously. Otherwise, the table will generate heat and could lose accuracy. This could also cause overload alarms with the servomotor.

Under the United States trade regulation, RollerDrive CNC can be restricted to supply or export to a country which may produce weapons or related products.

Dimensions and specifications are subjected to be modified without notice.

Contents of this catalogue were published in 2015.

Whole or part of the contents, mechanisms, logos, drawings belong to Sankyo Automation. No part of the catalog is allowed to copy or redistributed to the third party without the written permission of Sankyo Automation.

23

Service Network

Global OfficesSANKYO AUTOMATION10655 State Route 47, Sidney, Ohio 45365 U.S.A.Phone: (937) 498-4901 • Fax: (937) 498-9403E-mail: [email protected]: http://www.sankyoautomation.com

Group CompaniesSANKYO SEISAKUSHO CO., LTD3-37-3 Tabatashinmachi, Kita-ku,Tokyo, Japan 114-8538Phone: +81-3-3800-3330 • Fax: +81-3-3800-3380E-mail: [email protected]: http://www.sankyo-seisokusho.co.jp

Branch OfficeSHENZHENRm 721, Shenzhen Kerry Centre,2008 Renminnan Road, Shenzhen 518001 ChinaPhone: +86-755-8230-0270 • Fax: +86-755-8236-4605E-mail: [email protected]

Branch OfficeTIANJINRm 2706, Golden Building, 20 Nanjing Road,Hexi District Tianjin 300041 ChinaPhone: +86-22-2312-1005 • Fax: +86-22-2312-1007

SANKYO CHINA TRADING CO., LTD.(Shanghai Head Office)Room 1103, Block B, No.391 Guiping Road,Shanghai 200233 ChinaPhone: +86-21-5445-2813 ・ Fax : +86-21-5445-2340E-mail: [email protected]: http://www.sankyochina-trading.com/

SANKYO SEISAKUSHO CO. KOREA443-734103-1105, Digital Empire 2, 486 Shin-dong, Youngtong-gu, Suwon-si, Kyeonggi-do, South Korea Phone: +82 31 (695) 5801 ・ Fax : +82 31 (695) 5803

HANGZHOU SANKYO MACHINERY CO., LTD.No.8 Da Di Road, Xiao Shan Economic and TechnologyDevelopment Zone, Hangzhou Zhe Jiang 311215 China Phone: +82 -571-8283-3311 ・ Fax : +86-571-8283-1133

SANKYO SEISAKUSHO CO. TAIWANNo.25, Gongyequ 40th Rd., Xiehe Vil., Xitun Dist., Taichung City 40768, Taiwan (R.O.C.)Phone: +886-4-2359-4048 • Fax: +886-4-2359-4720

SANKYO CHINA TRADING CO., LTD. SANKYO AUTOMATION

KOREA

TAIWAN

ITALY

SINGAPOREAGENT

OFFICE

SANKYO SEISAKUSHO CO.

SANKYO INTERNATIONALLIMITEDHANGZHOU SANKYO

MACHINERY CO., LTD

THAILAND

10655 State Route 47Sidney, Ohio 45365Phone: (937) 498-4901www.sankyoautomation.com

Represented by:

SAI-CNC-2016/01

AUTOMATION

Specifications and dimensions are subject to change without notice. Consult Sankyo sales before ordering.Patent rights and copyrights for some mechanisms, trademarks, images, drawings and other material in this catalog all belong to Sankyo Seisakusho Co.“RollerDrive” is a registered trademark of Sankyo Seisakusho Co.

Sankyo America Inc. D.B.A. Sankyo Automation.

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