RollerDrive

RollerDrive®

RTG series NEW
Tilting Rotary table for small MCs

Meets your automation needs with arotary joint that has12 + 1 ports

RTG500RTG

Tilting Rotary table for small MCs

RollerDrive RTG series®

The RTG is a compact, lightweight, tilted rotary table that makes it possible to respond to the increasing number of machining needs of small MCs, theincreasing complexity of workpieces, and the increasing size of workpieces.
By using the RTG series equipped with A and C axes you can take advantage of process aggregation, efficient machining postures and tool selection, evenwhen machining workpieces that had previously required multiple processes. In addition, in order to meet the needs of unmanned machines and enjoy thebenefits of robots, rotary joints with up to 13 (12 +1) ports are available for automatic installation and removal of workpieces with seating confirmation.
Furthermore, the use of a RollerDrive mechanism eliminates the need for clamping during machining, thus reducing the positioning time by approximately
one-third, compared with conventional worm gear rotary tables that use clamps. The RollerDrive mechanism can be operated continuously, with only a short
break to change the lubrication oil. It eliminates the need for periodic backlash readjustments like the conventional worm gear rotary tables.
This contributes to significantly reduced equipment maintenance. The RTG is ideal for small MCs, while automating operations and improving productivity.

Example of installing Φ400 option table

Features

φ500

・Built-in, no-backlash RollerDrive mechanism
・Clampless processing drastically increases the ratioof cutting to non-cutting time

H270

・Lightweight and compact, and can be mounted on the#30 vertical MCs
・Provides a large jig area of φ 500 x H270
・Rotary joint is equipped with up to 12 + 1 ports
・Routine maintenance is just an oil change, nothing else.
Exclusive Backlash Zero Structure
Multiple roller followers, come intoTurretCamfollowers

Input camPreload

1

contact from both sides (in pairs)
without gaps to provide efficientrolling transmission withoutbacklash.

RollerDrive RTG®

No Maintenance and Excellent Price Performance
Cost Comparison with a Worm Gear Rotary Table

Consistent long-term accuracy
without maintenance.

Offers Long-term Use without MaintenancePositioning Accuracy Aging Test

2003010rm

Woayttarr roageble)

pleam(exRoller gear rotary table

MaintenancePositioning Error↓

Drop in accuracy
over time

Worm gear rotary table

Maintenance↑HighRequires maintenanceat regular intervals（arc sec）

20

Initial Cost versus Annual Maintenance Costs

100

Cost becomes less than the worm
gear table in three years.

RollerDrive

Low

001 Million

2 Million

Consistent long-term accuracy
without maintenance.

3 Million

4 Million

05 Million

1234567year①Worm gear rotary tables require maintenance twice a year.
②Assumes an annual running cost of 3% (oil changes, etc.) for both types.

Operating cycles

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

The RollerDrive graph is based on internal testing.
(Center distance of test unit: 170)

■ Worm gear models■ Worm gear models

Maintenance costs occur once or twice a year to adjust the backlash.

Accuracy declines over time. Requires maintenance toachieve initial accuracy.

■ RollerDrive■ RollerDrive

Long-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.

Accuracy is consistent with no maintenance even after
5 million operation cycles.

Based on internal calculations.

Compared against a worm gear for over
5 million indexes.
■ Test conditions

・Table size: Output table diameter: 170 mm
・Load inertia: 0.5 kgm2
・Index period: 36°(unidirectional)・Indexing time: 0.35sec■ Results after 5 million indexes:
ItemWorm gearRollerDrive

Variation in positioning accuracy

24.2sec

0.9sec18μm（15μm→33μm）

ーBacklash (measured at R60)

■ Variation in positioning accuracy
Variation in positioning accuracy [sec]Extended Accuracy

Variation after 5 million indexes:

30
25

Worm gear20

24.2sec

1510

RollerDrive

0.9sec50

1 Million

2 Million

3 Million

4 Million

5 Million

Based on internal testing data.

Shorter positioning time
Time comparison for 90°positioning■ Conventional worm gear

Conventional
worm gear

Clamping using hydraulic pressure or air pressure isrequired to suppress backlash.

（with clamp）Rotate
Unclamp workpiece
Unclamp Processing

Positioning time reduced toabout one third■ RollerDrive
Zero backlash and high rigidity eliminate the need for clamping.
Compared to the worm gear type,positioning time is reduced to about one third.

2

RollerDrive

Rotateworkpiece Processing（Based on in-house calculations)Product code
Rotary table
1-RTG500

234ModelServo Motor

OptionRotary joint

OptionTableADX

5

FANUC（With brake）
BROTHER（With brake）
Others

W-6J

Number of ports 12+1T

φ400 tapBlank

NoneBlank

NoneX

56Motor supplied, yes/noStandard / custom order

W

Motor supplied by SankyoBlank

StandardBlank

Motor supplied by customer

X

Custom order

TA

BC

B

T

2

Table shapeA4J

1

RTG500-- 3A

M12, 20DP
（16）
200

C

350

3

RollerDrive RTG®

Speciﬁcations

RTG500Speciﬁcations

Rotating axis

Tilting axis

-30 to +120

Tilting angle

deg

Table diameter

mm

φ120

Table pilot bore diameter＊1mm

φ90 +00.035

350

Center height at tilted axis +90°mm

Tabletop height at 0° tilted axis

mm

280

Guide block widthmm

14 -00.018

Total gear ratio

×10 −4 kg･m2

Motor shaft equivalent inertia ＊1 ＊2 ＊3

1/72

1/72

1.41 (1.43)

6.22 (6.97)

αiF4/5000-B(A06B-2223-B300)

Motor used（FANUC・BROTHER）

αiS8/4000-B(A06B-2235-B300)

R2AAB8100F〜

Maximum table rotational speedmin −169

Indexing accuracy

arc.sec±15

Repeatability

arc.sec

8

Net weight

kg

248

Net weight（when joints are rotary joint is installed）

kg

270

Allowable payload

kg

100

Maximum jig work diameter

mm500

Allowable workpiece inertiakg･m2

2.3

N

23000

L×FL

48±308N･m259

254−−

N･m415

318

−

−

N･m−−

518648N･m−−835713

F

Allowable maximum
holding torque＊4

Allowable continuous
holding torque55

FMaximumradial load

Allowable continuous
holding torqueR2AA13180H〜L

L×F

F

Allowable maximum
holding torque＊4

W×L
Internal eccentricload torque＊5

LW

N･m0

Lubrication method
Oil type/quantity112

Oil bath (and grease for the support unit)
Mobile SHC629 / 0.7L

Rotary joint (number of ports)

Mobile SHC629 / 1.4L

12+1

＊1 Values when a rotary joint is not installed.
＊2 Values in parentheses ( ) are when a rotary joint is installed＊3 The speciﬁed motor shaft equivalent inertia does not include the inertia of the motor shaft.
＊4 Maximum holding torque shall be a maximum of 30 seconds at a 40% duty cycle.
＊5 This is the value of the unbalanced torque of the rotating shaft acting on the tilt axis at a tilt angle of +90°.（0.112 m x 102 kg x 9.8）

4

Dimensions
Unit：mm15×22.5°

14°
3672°

φ12011112 2
310948 6572°（2）
φ8+0.015,12DP0（14）M8,16DP287.5

350

314°
X150344.5
φ120
φ90f712028°16°

12×（φ9）X

φ90f7（φ18）

Maxφ400
Jig mounting range
Allowable payload 100kg
Allowable moment of inertia 2.3kgm2
150

51±0.02 51±0.02

3.5

φ1112×φ4

153

230

85 40

153

φ90φ120180°° 1628Max270（4）φ11 THRU,C-BORE φ17.5, 10.8DP

210290φ500

30°012260

Rc1/4

300

②463

3.5Power/brake① ⑫2×12×Rc1/8
⑪ 66

280

42325
458

325
429

⑩③⑨④⑤Power/brake

Signal line

3040283.5

350

155

20508.5285°90⑥ ⑦⑧

Rotary joint input port
＊Speciﬁcations and dimensions are subject to change without notice. Consult Sankyo sales before ordering.

Precision Rating
Measurement

Method

RTG500Parallelism between table top
and bottom surface of base

0.02mmRunout of table top

0.01mmRunout of table reference bore

0.01mmParallelism between tilt axis
center line and bottom
surface of base

0.02mmThe degree at which the rotation
axis intersects the tilt axis

±0.01mm

Rotary axis

±15arc.sec

Indexing
accuracy
Repeatability

Signal line

Tilt axis±30arc.secRotary axis

8arc.sec

Tilt axis

8arc.sec5

GL（72.2）

260300RollerDrive RTG®

Precautions
For pneumatic power supply
Our CNC circular tables are equipped with an air purge
as standard equipment, in order to prevent the issues
inside the motor case (such as condensation, rustcaused by mixing of cutting ﬂuid, and damage toelectrical equipment) by the environment. The methodof supplying the air for the air purge is shown in theﬁgure on the right. Be sure to provide a clean air

Input pressure: 0.4 to 0.5 MPa
Consumption flow: Approx. 5L/min

supply.
(The exhaust vents must never be blocked.)

Lubrication
High-performance lubricants are used. Although this lubricant is scientiﬁcally and thermally stable, to ensure alonger product life we recommend that you change the oil every 3,000 hours of operation.
However, even if the annual operating time is less than that, the oil should be drained and replaced once a year. The
condition of the lubricant can be checked when checking the oil level.
Check it while the main unit is stopped. Check the quantity and color of the oil and replace it with new oil if it the oil
is low or discolored, regardless of the operating time. In addition, ﬁne air bubbles may enter the oil during operation,
but this will not cause a problem with quality. When changing the oil, use the speciﬁed lubricants listed below. Ifother lubricants are used, the product life may be reduced, parts may deteriorate, or other problems may occur.
Speciﬁed lubricants: Mobil SHC629 (VG150)

For use in polishing machines
Use of our tables with a grinding machine may damage the outer seals in our tables, so they are not covered by ourwarranty.

Maximum rotation speed
The maximum table rotation speed listed in the speciﬁcation table is the maximum rotation speed when used forindexing. If it is used in continuous rotation, the accuracy will deteriorate due to heat generation, the rotary joint will
have problems prematurely, and the servo motor overload alarm will sound. Please contact us about this type ofapplication.

Rotary joint
Use hoses for plumbing in the stationary sections. If oil ﬁlm leaks from the pneumatic circuit, it will cause a serious
problem. Install a bleed circuit between the two circuits. Avoid continuous rotation as it may cause heat buildup in
the internal seals. The gasket port mounting surface (O-ring seal surface) should be a ﬂat with a surface roughness
not higher than Rz 6.3. The ﬂuid used and the pressure must be within the following range.
Ports ① to ⑫: Hydraulic pressure; up to 7.0 MPa, pneumatic pressure; up to 1 MPa
Center port: Coolant; up to 1MPa

General■ If this product is used outside of Japan, it may be subject to restrictions under the Foreign Exchange and Foreign
Trade Act.
■ Speciﬁcations, dimensions and other product information in this catalog are subject to change without notice.
■ The information in this catalog is current as of October 2023.
■ Sankyo Seisakusho Co. owns all patent rights and copyrights to the mechanisms, trademarks, images, drawings,etc. described in this catalog.
No part of this catalog may be reproduced, reused or distributed without permission of Sankyo Seisakusho Co.

6

Global network
Group Companies

Sankyo China Trading Co., Ltd.
Hangzhou Sankyo Machinery Co., Ltd.
Sankyo America Inc.

Sankyo America Inc.
10655 State Route 47 Sidney, Ohio, 45365 U.S.A.
Phone： +1-(0)937-498-4901 Fax： +1-(0)937-498-9403
Email： sales@sankyoautomation.com
Sankyo Korea Co., Ltd.
1449-48 Seobu-ro, Gwonseon-gu, Suwon-si, Gyeonggi-do, 16643 Korea
Phone： +82-(0)31-895-5991 Fax： +82-(0)31-895-6607
Email： kr-sales@rollerdrive.com
Sankyo China Trading Co., Ltd.
[Shanghai Sales Office]Room101, Unit 2, No.159 Tianzhou Road, Shanghai 200233, China
Phone： +86-(0)21-5445-2813 Fax： +86-(0)21-5445-2340
Email： sales@sankyochina-trading.com

Sankyo Seisakusho Co.
Sankyo Shizuoka Seisakusho Co.
Sankyo Korea Co., Ltd.
TaiwanRodax Vietnam Co., Ltd.
Headquarters
Global Sales Offices
Production Facilities
International Distributors

India

Sankyo Works（Thailand）Co., Ltd.
Singapore
Thailand[Shenzhen Sales Office]Unit 19j, Tower B, Neo Building, No.6009 Shennan Avenue,
Futian District, Shenzhen China
Phone： +86-(0)755-8230-0270 Fax： +86-(0)755-8236-4605[Tianjin Sales Office]Room 1905, Pengzhanfeiwo Building A, Crossing Yale Road Yaolin Road,
Xiqing District, Tianjin 300380 ChinaPhone： +86-(0)22-2312-1005 Fax： +86-(0)22-2312-1007[Guangzhou Sales Office]Room 913, Xing Pu Buliding, No.12 Guan Hong Road,
Guangzhou Economic Development Zone, Huang Pu,
Guang Zhou 510670 China
Phone： +86-(0)20-8985-1846 Fax： +86-(0)20-8225-7346[Wuhan Sales Office]Room 2301, Taihe Square, No.134 Wusheng Road, Wuhan,
Hubei Province China
Phone： +86-(0)27-8568-5818 Fax： +86-(0)27-8568-2818
Hangzhou Sankyo Machinery Co., Ltd.
No.2518 Jiang Dong 2 Road, Hangzhou Jiang Dong Industrial Park,
Xiaoshan Zone, Hangzhou, Zhejiang, China
Phone： +86-(0)571-8283-3311 Fax： +86-(0)571-8283-1133
Rodax Vietnam Co., Ltd.
Plot No. M1, Thang Long Industrial Park Ii
Di Su, My Hao, Hung Yen, Viet Nam
Phone： +84-(0)221-3-589701 Fax： +84-(0)221-3-589708
Sankyo Works (Thailand) Co., Ltd.
9/31 Moo 5, Phaholyotin Road, Klongnueng,Klong Luang, Patumthani 12120 Thailand
Phone： +66-(0)2-516-5355 Fax： +66-(0)2-068-0931
Email： sales@sankyo-works.co.thContact us
Mon-Fri AM8:30-12:00 PM13:00-17:30 UTC + 09:00 (JST)（Except public holidays and company holidays）■Headquarters(International Sales Division)

3-37-3 Tabatashinmachi, Kita-ku, Tokyo, Japan 114-8538
Phone: +81-(0)3-3800-3305
Fax: +81-(0)3-3800-3378
Email: overseas@sankyo-seisakusho.co.jp
URL: https://www.sankyo-seisakusho.co.jp■Taiwan Sales Office

No.21, Ln.152, Jianxing Rd., Sanhe Vil., Daya Dist., Taichung City 42876, Taiwan (R.O.C.)
Phone: +886-(0)4-2359-4048
Fax: +886-(0)4-2359-4720
Email: tw-sales@rollerdrive.com

https://www.sankyo-seisakusho.co.jp
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. in Japan.

RTG-2023／10E（DT）