New
Rotation StageNIPPON THOMPSON CO., LTD. (JAPAN)

IKO BRASIL SERVIÇOS EMPRESARIAIS EIRELI (BRAZIL)

Head Office : 19-19, Takanawa 2-chome, Minato-ku,
Tokyo, 108-8586, JapanPhone: +81 (0)3-3448-5850
Fax: +81 (0)3-3447-7637
E-mail: ntt@ikonet.co.jp
URL: https://www.ikont.co.jp/eg/
Plant: Gifu, Kamakura

Rua Frei Caneca 1407,
Condominio Edificio Barão de Monte Cedro,
Cjs. 801/802, Consolação, São Paulo- SP
Cep : 01307-909
Phone: +55 (0)11-2366-3033
E-mail: itb@ikonet.co.jp

IKO INTERNATIONAL, INC. (U.S.A.)
East Coast Operations (Sales Head Office)91 Walsh Drive,
Parsippany, NJ, 07054,
U.S.A.
Phone: +1-973-402-0254
Toll Free: +1-800-922-0337
Fax: +1-973-402-0441
E-mail: eco@ikonet.co.jp
Midwest Operations
101 Mark Street, Unit-G,
Wood Dale, IL, 60191,
U.S.A.
Phone: +1-630-766-6464
Toll Free: +1-800-323-6694
Fax: +1-630-766-6869
E-mail: mwo@ikonet.co.jp
Minnesota Sales Office1500 McAndrews Road West, Suite 210,
Burnsville, MN, 55337,
U.S.A.
Phone: +1-952-892-8415
Toll Free: +1-800-323-6694
Fax: +1-952-892-1722
E-mail: mwo@ikonet.co.jp
West Coast Operations
9830 Norwalk Boulevard, Suite 198,
Santa Fe Springs, CA, 90670,
U.S.A.
Phone: +1-562-941-1019
Toll Free: +1-800-252-3665
Fax: +1-562-941-4027
E-mail: wco@ikonet.co.jp
Silicon Valley Sales Office1500 Wyatt Drive, Suite 10,
Santa Clara, CA, 95054,
U.S.A.
Phone: +1-408-492-0240
Toll Free: +1-800-252-3665
Fax: +1-408-492-0245
E-mail: wco@ikonet.co.jp
Southeast Operations
3235 Satellite Boulevard Building 400, Suite 230,
Duluth, GA, 30096,
U.S.A.
Phone: +1-770-418-1904
Toll Free: +1-800-874-6445
Fax: +1-770-418-9403
E-mail: seo@ikonet.co.jp
Southwest Operations
8105 N. Beltline Road, Suite 130,
Irving, TX, 75063,
U.S.A.
Phone: +1-972-929-1515
Toll Free: +1-800-295-7886
Fax: +1-972-915-0060
E-mail: swo@ikonet.co.jp

IKO THOMPSON BEARINGS CANADA, INC.(CANADA)IKO THOMPSON KOREA CO.,LTD. (KOREA)
201, Worldvision Bldg., 77-1, Yeouinaru-ro,
Yeongdeungpo-gu, Seoul, Korea
Phone: +82 (0)2-6337-5851
Fax: +82 (0)2-6337-5852
E-mail: itk@ikonet.co.jp

NIPPON THOMPSON EUROPE B.V. (EUROPE)IKO-THOMPSON (SHANGHAI) LTD. (CHINA)

The Netherlands (Sales Head Office)Keersopstraat 35,3044 EX, Rotterdam,
The Netherlands
Phone: +31 (0)10-462 68 68
E-mail
: nte@ikonet.co.jp
Germany Branch
Mündelheimer Weg 54,
40472 Düsseldorf,
GermanyPhone: +49 (0)211-41 40 61
Fax: +49 (0)211-42 76 93
E-mail: ntd@ikonet.co.jp

Shanghai (Sales Head Office)1608-10, MetroPlaza No.555, LouShanGuan
Road, ChangNing District, Shanghai,
People's Republic of China, 200051
Phone: +86 (0)21-3250-5525
Fax: +86 (0)21-3250-5526
E-mail
: ntc@ikonet.co.jp
Beijing Branch
Room1506, Jingtai Tower,
NO.24, Jianguomenwai Avenue,
Chaoyang District, Beijing
People's Republic of China, 100022
Phone: +86 (0)10-6515-7681
Fax: +86 (0)10-6515-7689
E-mail
: ntc@ikonet.co.jp
Guangzhou Branch
Room 834, Garden Tower, Garden Hotel
368 Huanshi East Road, Yuexiu District, Guangzhou,
Guangdong
People's Republic of China, 510064
Phone: +86 (0)20-8384-0797
Fax: +86 (0)20-8381-2863
E-mail
: ntc@ikonet.co.jp
Wuhan Branch
Room 2300, Truroll Plaza No.72, Wusheng Road,
Qiao kou District, Wuhan, Hubei,
People's Republic of China, 430033
Phone: +86 (0)27-8556-1610
Fax: +86 (0)27-8556-1630
E-mail
: ntc@ikonet.co.jp
Shenzhen Branch
Room1808, KEENSTAR Building 18,
Chuangye 2nd Rd 248, Bao'an, Shenzhen, Guangdong,
People's Republic of China, 518081
Phone: +86 (0)755-2265-0553
Fax: +86 (0)755-2298-0665
E-mail
: ntc@ikonet.co.jp

Regensburg Sales Office
Im Gewerbepark D 30,
93059 Regensburg,
GermanyPhone: +49 (0)941-20 60 70
Fax: +49 (0)941-20 60 719
E-mail: ntdr@iko-nt.de
Neunkirchen Sales Office
Gruben Str. 95c,
66540 Neunkirchen,
GermanyPhone: +49 (0)6821-99 98 60
Fax: +49 (0)6821-99 98 626
E-mail: ntdn@iko-nt.de
U.K. Branch
2 Vincent Avenue, Crownhill,
Milton Keynes, Bucks, MK8 0AB,
United Kingdom
Phone: +44 (0)1908-566144
Fax: +44 (0)1908-565458
E-mail: sales@iko.co.uk
Spain Branch
Autovia Madrid-Barcelona, Km. 43,700
Polig. Ind. AIDA - Nove A-8, Ofic. 2-1a
19200-Azuqueca de Henares,(Guadalajara) Spain
Phone: +34 949-26 33 90
Fax: +34 949-26 31 13
E-mail: nts@ikonet.co.jp
France Branch
Bâtiment le Raphaël-Paris, Nord 2,
22 avenue des Nations
BP54394 Villepinte
95943 ROISSY C.D.G Cedex
FrancePhone: +33 (0)1-48 16 57 39
Fax: +33 (0)1-48 16 57 46
E-mail: ntf@ikont.eu

IKO THOMPSON ASIA CO., LTD. (THAILAND)
1-7 Zuellig House, 3rd Floor,
Silom Road, Silom, Bangrak,
Bangkok 10500, Thailand
Phone: +66 (0)2-637-5115
Fax: +66 (0)2-637-5116
E-mail: ita@ikonet.co.jp

Ningbo Office
Room 3406, Zhongnongxin Building, No.181,
Zhongshan East Road, Haishu Ward, Ningbo,
Zhejiang,
People's Republic of China, 315000
Phone: +86 (0)574-8718-9535
Fax: +86 (0)574-8718-9533
E-mail
: ntc@ikonet.co.jp
Qingdao Office
Room 1111, Building 9, Qingdao Science andTechnology City, No. 7 Wuyang Road,
North District, Qingdao City, Shandong,
People's Republic of China, 266045
Phone: +86 (0)532-8670-2246
Fax: +86 (0)532-8670-2242
E-mail
: ntc@ikonet.co.jp
Shenyang Office2-1203 Tower I. City Plaza Shenyang NO.206,
Nanjing North Street, Heping District, Shenyang,
People's Republic of China, 110001
Phone: +86 (0)24-2334-2662
Fax: +86 (0)24-2334-2442
E-mail
: ntc@ikonet.co.jp731-2425, Matheson Boulevard East, 7th floor,
Mississauga, Ontario, L4W 5K4, Canada
Phone: +1-905-361-2872
Fax: +1-905-361-6401
E-mail: itc@ikonet.co.jp

Gentle to The Earth• The specifications and dimensions of products in this catalog are subject to change without prior notice. • When these products are exported, theexporter should confirm a forwarding country and a use, and, in case of falling under the customer's requirements, take necessary procedures suchas export permission application. • Although all data in this catalog has been carefully compiled to make the information as complete as possible,
NIPPON THOMPSON CO., LTD. shall not be liable for any damages whatsoever, direct or indirect, based upon any information in this catalog.
NIPPON THOMPSON CO., LTD. makes no warranty, either express or impiled, including the impiled warranty of merchantability or fitness for a
ISO 9001 & 14001 Quality system registration certificate
particular purpose. • Reproduction and conversion without permission are prohibited.

https://www.ikont.co.jp/eg/

CAT-2966E

Printed in Japan © 2021.8 (AK)SK…W

A new rotation stage
with precision positioning!

The new SK…W Rotation Stage provides smooth
positioning with high accuracy and high rigidity!
SK…W Structure
The SK…W is an unlimited rotation stage that employs a worm gear mechanism. IKO Crossed Roller Bearings
are used in the rotation guiding parts and utilized directly as a table to achieve high-precision rotational
runout, high rigidity and a low profile.

Crossed Roller Bearings

Table

SK…W Features
High Accuracy
IKO Crossed Roller Bearings are used in
the rotation guiding parts and can achieve
deflection on the table upper surface of 5μm
or less.

Low Profile, High Rigidity
IKO Crossed Roller Bearings with high rigidity
in all directions are used in the rotation
guiding parts. In addition, since Crossed
Roller Bearings are used directly as the table,
a low profile is also achieved.

Table Parallelism

5μm orlower

Low Profile

30mm(For models without
limit sensor)

Reduced Design WorkWorm

The device table or test object can bemounted directly to the table. The use of
mechanical parts reduces the labor hours
required to design a rotating table fromscratch.

Simply mount thetable or test object
directly!

Identification Number
SK

120

W

1

2

1

Example1

Sensor Specification
/

ATB01

SC

The SK…W is fitted with an origin sensor (E2S-W13B 1M produced by Omron Corporation) as standard.

3

4

position should be performed by performing offset adjustment through a higher-level controller. For models with a limit sensor, a limit sensor

There is no precision regulation of the relative positions of the origin sensor and the table mounting hole, precise adjustment of the return to origin(E2S-W14 1M produced by Omron Corporation) and an upper table are added. The position of the limit sensor dog can be adjusted. The operating
range can be set to any position up to 320 degrees.

Model
Model

With limit sensor

SK…W: Rotation Stage SK…W

Without limit sensor

Cover

2

Size

Cover
Limit sensor dog

Upper table

SymbolTable diameter (mm)120

115 (120)

Table

Limit sensor
Origin sensor confirmation
notch

Remarks: Dimensions in parentheses are for models with a limit sensor.

3

Limit sensor

Designation of Motor Attachment

Limit sensor dog

Select a motor attachment symbol from Table 1.

Origin sensor and origin sensor dog(sensor detection angle: approx. 3°)

Origin sensor and origin sensor dog(sensor detection angle: approx. 3°)

・Motor should be prepared by customer.
・Please specify motor attachment applicable to motor use.
・Couplings shown in Table 2 are temporarily fixed in the main body before shipment. Final position adjustment should be performed bycustomer.
Table 1 Application of motor attachment
Motor to be used
Rated output
(W)

Model

Flange(mm)

Type

Manufacturer

Series

ATB01

Five-phase stepper motor

ORIENTAL MOTOR Co.,
Ltd.

PK

PK525HPB

□ 28

ATB02

Two-phase stepper motor(bi-polar)

MinebeaMitsumi, Inc.

10PM-K

10PM-K406CNVA6098 (1)

□ 25

ATB03

AC Servomotor

Mitsubishi Electric
Corporation

J4

30

□ 25
(22.5

°)

HG-AK0136* The origin sensor position can be checked from the cover notch.

Note (1) Dedicated IKO model number. Available for purchase from NMB Sales Co., Ltd.

ON

4

Motor attachment

Coupling models

Manufacturer

Coupling inertia (Jc ×10-5kg・m2)

ATB01 and ATB02

MSTS-12C-5 × 5

Nabeya Bi-tech Kaisha

0.022

ATB03

XGS-15C-5 × 5

Nabeya Bi-tech Kaisha

0.020

(3°)

Table 2 Coupling models

Origin sensor

Motor attachment symbol* For models with a limit sensor, check the position of the origin sensor dog with the cover
removed.
* The cover cannot be removed after limit sensor dog adjustment. Perform limit sensor
dog adjustment after fixing the base of the product to the mounting surface andmounting the cover.

Limit Sensor Designation
SymbolLimit sensor specification

No symbol

No limit sensor (built-in origin sensor is included)

SC

Includes limit sensor (includes upper table)

Fig. 1 Origin sensor timing chart

Mounting

Specifications / Accuracy
Table 3 Specification

To mount the SK…W, remove the cover and use screws to fix the base to the mounting surface.

Table 4 Accuracy

The typical tightening torque to be used when fixing the SK…W in place is indicated in Table 5.

Operating angle range (1) (degrees)

360

Positioning accuracy (s)21.6

Resolution (2) (s)1.08

Positioning repeatability (s)

±7.2

5

Lost motion (s)32.4

Maximum number of worm axis revolutions (min )600

Backlash (s)32.4

Moment rigidity (s/N・cm)

0.04

Parallelism of upper table surface to mounting surface (μm)

20 (40)Allowable load (3) (N)50

Radial runout of table diameter (μm)

5 (15)

Deflection on table upper surface (μm)

5 (25)

Maximum number of table revolutions (min )-1-1

Note (1) Values shown are for models without a limit sensor. When models with a limit sensor
are used, adjustments can be performed to any angle within a range of up to 320
degrees.
(2) The resolution indicates a value when fraction sizes of the motor are 10,000
pulses/rev.
(3) Allowable load refers to the maximum load that can be applied without
affecting functions or performance.

Remarks: Values in parentheses are for models with a limit sensor.

When high accuracy is required with no vibration and shock, it is recommended to tighten the screws with a lower torque than that indicated in thetable and use an adhesive to prevent screws from loosening.
Table 5 Screw tightening torqueunit: N·m

Female thread component
Bolt size

Steel

M4 × 0.7

4.0

M5 × 0.8

7.9

Aluminum alloy
Screw insert
About 60% of steel value

About 80% of steel value

Dimensions of Motor Attachment

Product dimensions

ATB01

SK120W: Without limit sensor
717.5

2-M2.5 through537(fixed from motor bracket)
17

2.5

140

Mass: 2.0kg

120

7.5

2-2.9 through5.2, Counterbore depth: 2.8(fixed to motor bracket)

67.5

29

7

15

23

9

+0.04

8-M4, Depth: 8(1)(evenly distributed)

φ 22 +0.02

φ5

φ 16

6

4-2.9 through

3.25
23

10

5

5.5

5.2, Counterbore depth: 2.8

150

90

φ

53

th

ro
u

φ90H7

Unit: mm

φ115

φ

34

(22
.5°

85

)

gh
4-M5 hole

ATB02
17.5

40

5

37

2-M2.5 through2-2.9 through5.2, Counterbore depth: 2.8(fixed to motor bracket)

17(fixed from motor bracket)

17

7

15

Unit: mm

29

7

15

20

30

Note ( ) Inserting mounting screws too deeply may affect the rotation performance of the table. Never insert a screw longer than the depth of the through hole.
+0.04

φ 15 +0.02

φ5

1

4-2.9 through

3.25
7

20

5.2, Counterbore depth: 2.8

34

Unit: mm

SK120W: With limit sensor/with upper table
140

Mass: 2.4kg

4-4.5 through(machined to upper surface of table (thickness: 5))

120

7.5
67.5

4-M4, Depth: 8(1) (machined to table)(evenly distributed)
10

ATB03

9

5

ng

t ra

en

m
ve

e)

o

8.6 m
12 og
φ it d
l( im

17.5
37

150

th

ro
u

4-M5 hole

6.5, Counterbore depth: 3
PCD28, Evenly distributed at 180°

Unit: mm

17

34

(22

2-3.2 through

.5°

)

gh

85

3.25

40

+0.04

22 +0.02

53

φ120

φ

φ

90

29

7

15

φ 16

17

10
5

2-2.9 through5.2, Counterbore depth: 2.8(fixed to motor bracket)(fixed from motor bracket)

φ55H7

2-M2.5 through

5
3.5

φ5

7

15
35

Unit: mm

Note (1) Inserting mounting screws too deeply may affect the rotation performance of the table. Never insert a screw longer than the depth of the through hole.