TECHNICAL GUIDE PARTS CATALOGUE - … · * Measurement should be done within 10~60 minutes ... 1.Oiling spot Barrel and train wheel bridge with hole ... Set the hole of first reduction

Revised on : 23. May. 2018

SII Products

TECHNICAL GUIDE

&

PARTS CATALOGUE

Cal.NH70/71

AUTOMATIC MECHANICAL

[SPECIFICATION] Version-02

SII Products 1

Time indication 3Hands (hour, minute, second)

Stop-second device

First click Time setting

Basic function

Crown

position

Normal

position

Counterclockwise FreeClockwise Manual winding

Duration timeMore than 41 hours … Mainspring after fully wound up

* Posture to confirmation : Dial up

Winding the mainspring

<< Movement >>・Fully wound up by turning the crown minimum 55 times・Fully wound up by turning the ratchet wheel screw 8 times

<< Complete Watch >>

A winding machine is needed to wind up the mainspring

Full wind up conditions・Rotary speed : 30 rpm・Operating time: 60 minutes

Jewels 24 jewels

Frequency 21,600 vibrations per hour

Accuracy

Static accuracy-20~+40 seconds per day

* Measurement should be done within 10~60 minutes after fully wound up

Measurement

positionDirection of 3 positions (1) Dial up (2) 9 o'clock up (3) 6 o'clock up

Lift angle 53 deg

Measurement

time

20 seconds

* Equipment to be used : Witschi WATCH EXPERT

Posture

difference

Difference is under 60 seconds with max value and minimum value

* Measurement should be done within 10~60 minutes after fully wound up

* Direction of 4 positions

(1) 12 o'clock up (2) 9 o'clock up (3) 6 o'clock up (4) 3 o'clock up

Isochronisms

(24h-0h)

-20~+40 seconds per day

* Measurement position : Dial up

* Difference of static accuracy of 24 h and 0h

Manual winding

Automatic winding with ball bearing

PARTS CATALOGUE / TECHNICAL GUIDE

Cal.NH70/71

Movement

Movement

　　　size

Outside diameter Ф 27.4mm

Casing diameter Ф 27.0mm

Total height 5.32mm

NH70 NH71－－－－ Gilt version of NH70

0012 354

Hour wheel guard screw

Hour wheel guard

Refer to page 6 for

each parts code

0273 183

Hour wheel

0261 190

Minute wheel and pinion

0225 425Cannon pinion

Lower hole jewel frame

for shock-absorber

SII Products 2

8-4

Lower shock

absorbing cap jewel

PARTS CATALOGUEVersion-02Cal.NH70/71

8-2

8-3

Lower shock

absorbing spring

*1

1

2

3

4

5

Type of oil Oil quantity mark

Moebius 9010 NORMAL QUANTITY

S-6 SUFFICIENT QUANTITY

S-4

Disassembling procedures Figs.

1 → 5Reassembling procedures Figs.

5 → 1

*2

*1

*2

Oscillating weight with ball bearing

Refer to page 6 for each parts code

0012 354

Automatic train bridge screw

0012 100

Balance bridge screw Automatic train bridge

Refer to page 6 for

each parts code

0514 183

Second reduction wheel and pinion

Balance cock 0012 919

Refer to Ratchet wheel screw

page 6 for

each parts code

Ratchet wheel

Refer to page 6 for each parts code

0012 354

Pallet bridge screw

Pallet bridgeRefer to page 6 for each parts code

0310 1840301 009Pallet fork

3

Upper shock absorbing spring

8-3Upper shock absorbing

cap jewel

8-4

3

Upper hole jewel frame for

shock-absorber

SII Products

10

8

5

6

8-1

4

Balance complete

with stud11

8-2

9

7


1

2

*3




S-436 → 1

Disassembling procedures Figs.

1 → 36Reassembling procedures Figs.

*1

*1

*2

*2

*3

whole tooth

0511 010 0012 100

First reduction wheel

Refer to page 7 for oiling spot

Cap jewelled spring

Cap jewel

0831 183

Pawl lever 0363 184

Refer to page 6 for

each parts code


0836 002

Reduction wheel holder 0436 166

0144 184 0012 354

Fourth wheel and pinion

0231 070

Third wheel and pinion

0381 004Click

Barrel complete with mainspringRefer to page 6 foreach parts code

4

Lower plate for barrel and train

wheel bridge screw

21

22

23

SII Products

15

18

Lower plate for barrel and train

wheel bridge

20 19

13


17 12

Barrel and train wheel bridge screw

13-1

13-2

16

14

Ratchet sliding wheel spring

Refer to page 9 for the

assembling method

Barrel and train wheel bridge

with hole jewel frame


Moebius 9010 S-6 NORMAL QUANTITY


*1

*1

0012 354

Center wheel bridge screw

0122 302

Center wheel bridge

0251 300

Escape wheel and pinion

0224 204

Center wheel and pinion

0012 168

Yoke spring screw

0388 177

Yoke spring

0384 184

Yoke

0383 186

Setting lever

0601 183Balance stop lever


0282 183Clutch wheel

0283 020Winding pinion

0351 200Winding stem

Main plate36

SII Products 5

33

35

34

32


24

25

26

27

28

29

30

31


Moebius 9010 S-6 NORMAL QUANTITY


*1

*2 *3

*4

*2

*3

*4

*1

Hour wheel guard (P-2)

Oscillating weight with ball bearing (P-3)

Automatic train bridge (P-3) Ratchet wheel (P-3)

Balance cock (P-3) Pallet bridge (P-3)

Barrel and train wheel bridge with hole jewel frame (P-4)

Barrel complete with mainspring (P-4)

■■■■ List of screw

Parts code


SII Products 6

1509　196 Malaysia mark

PageParts form Parts form

0012 354

P-2 1Hour wheel guard screw

(x3)

Automatic train bridge

screw (x2)

NH70 0376 199 NH71 0376 299

2

Cal. Parts code Cal.

No Parts code

1

Page No Parts code Parts name

1509　195 Japan mark

Parts code Marking

P-3

2

Parts name

5 0012 919

9 Pallet bridge screw (x2)P-3 7

0012 100

Balance bridge screw

24Center wheel bridge

screw

P-4 12Barrel and train wheel

bridge screw (x3)

Ratchet wheel screwP-3

P-4 19Lower plate for barrel and

train wheel bridge screw

P-5

P-5 28 0012 168 Yoke spring screw (x2)

Marking

NH71

1509　189 Japan mark

Cal.

NH70

Cal. Parts code

NH70 0285 051 NH71

13

23

Cal. Parts code Cal. Parts code

0285 199

8 10

6

Cal. Parts code Cal. Parts codeParts code

NH70 0191 183 NH71 0191 288

3


Parts code

NH70 0161 300 NH71 0161 298


NH70 0171 353 NH71 0171 295



NH70 0114 183 NH71 0114 299

NH70 0201 083 NH71 0201 199

1.Oiling spotBarrel and train wheel bridge with hole jewel frame

Barrel and train wheel bridge with hole jewel frame (back side)

Note

*2 After oiling, set lower plate for barrel and train wheel bridge & screw

Lower plate for barrel and train wheel bridge

Lower plate for barrel and train wheel bridge screw

*4 After oiling, set first reduction wheel & pawl lever & reduction wheel holderFirst reduction wheel


Pawl lever

Reduction wheel holder

7

TECHNICAL GUIDEVersion-02Cal.NH70/71

13

18

19

17

17

16

15

SII Products




S-4

*2

*3

*1

*1

*2 *3*4

Balance stop lever

Balance stop lever

Main plate

Contact part of main plate and balance stop lever

2.Setting position of oscillating weight・Before assembling oscillating weight

Match the center of the oscillating weight and winding stem. Set the hole of first reduction wheel gear on the

imaginary line toward the balance bridge guide pin.

Balance bridge guide pin First reduction wheel gear

3.To remove the winding stem1) Set the winding stem to normal position

2) Pull out the winding stem, while pushing "A"

Setting lever

Winding stem

SII Products 8


32

31

33

Enlarged view

A

4.Disassembling / assembling of the First reduction wheel


Reduction wheel holder

Barrel and train wheel bridge (back side)

5.Disassembling / assembling of the Ratchet sliding wheel spring

Ratchet sliding wheel spring

Barrel and train wheel bridge with hole jewel frame

Remove the hook of the ratchet sliding wheel spring

from barrel and train wheel bridge with hole jewel

frame.

The hooks of ratchet sliding wheel spring are hung up

on barrel and train wheel bridge with hole jewel frame.

SII Products 9

15

13

<< Disassembling >> << Assembling >>

14

13

17


<< Disassembling >> << Assembling >>

PUSH

6.Accuracy adjustment

Regulator

Regulator pinStud support

Note:・・・・Regulator … Time adjustment ・・・・Stud support … Beat error adjustment

・・・・Regulator pin … Gap adjustment of balance spring and regulator pin

SII Products 10


Anticlockwise rotation No clockwise rotation

(+) side

(-) side

7.To wind up the mainspring<<Movement>>

Screwdriver winding … Turn the ratchet wheel screw 8 times clockwise.

Screwdriver

Ratchet wheel screw

Ratchet wheel

8.How to attach handsPlace the movement directly on a flat metal plate or something similar to attach the hands.

We recommend the use of movement holder to attach hands. Static weighting

For hands attachment, please use a special equipment.

When the movement receives a strong shock, it may be damaged.

9.Accuracy measurement conditionStatic Accuracy : -20~+40 seconds per day

Measurement Conditions1) Measurement should be done within 10~60 minutes after fully wound up2) Lift angle : 53 deg3) Measurement position : (1) Dial up (2) 9 o'clock up (3) 6 o'clock up4) Minimum measurement Time : 20 seconds5) Stabilizing Time :

Leave the watch for at least 20 seconds to stabilize after you change its measurement position.

SII Products 11


The mainspring would be fully wound up by turning the ratchet wheel screw 8 times clockwise. (Manual winding or Screwdriver)

Manual winding … Rotate crown clockwise at normal position by minimum 55 times. (Equal to ratchet wheel screw 8 times )

[ Manual winding ] [ Screwdriver winding ]

Metal plate

Minute hand

Hour hand

Crown at first position

Crown at normal position

Second hand

1.How to set the time1) Pull out the crown to the first click position

2) Turn the crown to set hour and minute hands

3) Push the crown back into the normal position

2.To wind up the mainspringa) Manual winding … Rotate the crown clockwise at normal position

Wind turning the ratchet wheel screw 8 times. It will start to move naturally after shaking slightly.

b) To wind up with winding machineFull wind up conditions・Rotary speed : 30 rpm・Operating time : 60 minutes

SII Products 12

OPERATIONVersion-02Cal.NH70/71

Documents

TECHNICAL GUIDE PARTS CATALOGUE - … · * Measurement should be done within 10~60 minutes ... 1.Oiling spot Barrel and train wheel bridge with hole ... Set the hole of first reduction