TMI Products NE20C Installer manual

SII Products
TECHNICAL GUIDE
&
PARTS CATALOGUE
AUTOMATIC MECHANICAL
Cal.NE20C
Revised on : 23. Jan. 2019

[SPECIFICATION]
Day setting
Difference is under 45 seconds within max value and min 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)
-10~+20 seconds per day.
* Direction of position. : Dial up
* Difference of static accuracy of 24h and 0h
Duration time
More than 45 hours … Mainspring after fully wound up.
* Posture to confirmation : Dial up
Normal position
20 seconds
* Equipment to be used : Witschi WATCH EXPERT
Posture
difference
Manual winding
Automatic winding with ball bearing
Stop second device
Quick day-date correction
<< Movements >>
䞉Fully wound up by turning the crown minimum 55 times.
䞉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
䞉Rotary speed : 30 rpm
䞉Operating time: 60 minutes
Crown
position
Counterclockwise
Clockwise
-15~+25 seconds per day
* Measurement should be done within 10~60 minutes after fully wound up.
* All measurements are made without the calendar in function.
Measurement
position
Direction of 3 positions. (1) Dial up (2) 9 o'clock up (3) 6 o'clock up
Lift angle
52 deg.
Free
Manual winding
Date setting
PARTS CATALOGUE / TECHNICAL GUIDE
Cal.NE20C
Version-03
Cal. No.
Measurement
time
Time indication
Basic function
3 Hands ( Hour , Minute , Second )
Day-date calendar hands
Power reserve hand
Ф27.40mm
Casing diameter
Ф27.00mm
Total height
Frequency
28,800 vibrations per hour
Accuracy
SII Products
1
Item
NE20C
Second click
Time setting
Time setting
Movement
Movement
䚷䚷䚷䚷size
Outside diameter
Winding the mainspring
Static accuracy
6.15 mm
First click
Jewels
29 jewels

0012 310
Auxiliary train wheel bridge screw
1019 002
Power reserve wheel
0126 196
Auxiliary train wheel bridge
0817 047
Intermediate power reserve wheel
1009 004
Second sun wheel
0538 001
Barrel arbor pinion
1026 002
1001 025
Planetary reduction wheel
Sun and planet unit
1009 003
Sun wheel
Refer to the page9 for the
oiling position.
PARTS CATALOGUE
2
SII Products
*2
Version-05
Cal.NE20C
6
(Back side)
7
8
9
1
3
2
5
4
*1
Type of oil Oil quantity mark
Moebius 9010 NORMAL QUANTITY
S-6 SUFFICIENT QUANTITY
S-4
1
䲑
60
Reassembling procedures Figs.
䲑
Disassembling procedures Figs.
1
60
*2
*1

0898 001
Day driving wheel
0802 036
0970 003
Date driving wheel Day star
0970 002
0810 164
Date star
Day jumper
1001 128
0810 164
Day-date corrector setting unit
Date jumper
0012 310
0737 021
Auxiliary main plate screw Date corrector setting wheel
0102 192
Auxiliary main plate
0261 190
Minute wheel and pinion
0273 029
Lower shock absorbing spring
Hour wheel
0225 432
Lower shock absorbing Cannon pinion
cap jewel
0962 190
Lower hole jewel frame
for shock-absorber
Main plate
Version-05
Cal.NE20C
11
(Back side)
17
PARTS CATALOGUE
10
13
12
14
15
16
SII Products
3
18
60
19
20
21
60-3
22
23
Day-date corrector setting
transmission wheel B
60-1
60-2
(Back side)
*1
*1
*2
*2
*3
*3
Type of oil Oil quantity mark
Moebius 9010 S-6 NORMAL QUANTITY
S-4 SUFFICIENTQUANTITY

1509 089
Oscillating weight with ball bearing
*Refer to the page11 for
assembling position
0012 354
0012 100
0191 064
Balance bridge screw
Automatic train bridge
0171 349
0514 183
Balance cock
0012 919
Ratchet wheel screw
0285 051
Ratchet wheel
0012 354
Pallet bridge screw
0161 310
0310 058
Pallet bridge
Balance complete
with stud
0301 315
Pallet fork
Upper shock absorbing spring
Upper hole jewel frame for shock-absorber
Upper shock absorbing cap jewel
PARTS CATALOGUE
SII Products
4
31-4
Version-04
Cal.NE20C
29
32
33
24
31-3
28
25
30
26
31-2
Second reduction wheel and pinion
31
27
Automatic train bridge screw
31-1
34
*1
*3
*2
*2
whole tooth
*1
*3
Type of oil Oil quantity mark
Moebius 9010 S-6 NORMAL QUANTITY
S-4 SUFFICIENTQUANTITY

0012 100
0511 010
Cap jewelled spring
Cap jewel
0831 183
0363 184
Pawl lever
0114 415
Barrel and train wheel bridge
with hole jewel
0836 002
*Refer to the page8 for the
Reduction wheel holder
oiling position.
0436 166
Lower plate for barrel and train
wheel bridge
0012 354
0144 300
Lower plate for barrel and train
Fourth wheel and pinion wheel bridge screw
0231 070
Third wheel and pinion
0012 354
Center wheel bridge screw
0122 164
Center wheel bridge
PARTS CATALOGUE
Barrel and train wheel bridge screw
39
Version-04
Cal.NE20C
35
First reduction wheel and arbor
*Refer to page 8 for oiling spot
40
36-1
36
44
36-2
5
SII Products
41
45
37
46
43
*Refer to the page11 for assembling
38
42
Ratchet sliding wheel spring
*1
*1
Type of oil Oil quantity mark
Moebius 9010 S-6 NORMAL QUANTITY
S-4 SUFFICIENTQUANTITY

0224 195
Center wheel and pinion with cannon pinion
0381 004
Click
0201 074
Barrel complete with mainspring
0251 314
Escape wheel and pinion
0012 168
Yoke spring screw
0388 177
Yoke spring
0384 183
Yoke
0383 185
0601 310
Setting lever
Balance stop lever
0282 183
Clutch wheel
0283 020
Winding pinion
0962 183
Day-date corrector setting
transmission wheel A
0351 200
Winding stem
Main plate
Version-04
Cal.NE20C
47
48
49
PARTS CATALOGUE
6
50
53
54
60
51
55
SII Products
58
59
52
56
57
*1
*2
*2
*1
Type of oil Oil quantity mark
Moebius 9010 S-6 NORMAL QUANTITY
S-4 SUFFICIENTQUANTITY
*3
*3

Remarks
䖃䖃List of screws
*All parts code are subject to change without notice.
Version-03
Cal.NE20C
7
30
Lower plate for
barrel and train
wheel bridge screw
25
Auxiliary train wheel
bridge screw (×4)
Balance bridge
screw
Pallet bridge screw
(×2)
PARTS CATALOGUE
41
Barrel and train
wheel bridge screw
䚷䚷䚷䚷䚷䚷䚷䚷䚷䚷(×3)
Automatic train
bridge screw (×2)
32
SII Products
0012 100
Parts No
45
Name
0012 354
0012 919
Center wheel bridge
screw
Name
Parts No
28
Ratchet wheel screw
0012 168
35
Yoke spring screw
(×2)
51
Auxiliary main plate
screw
18
1
0012 310

1.Oiling spot
Barrel and train wheel bridge with hole jewel
[Top side]
[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 and arbor & pawl lever & reduction wheel holder.
First reduction wheel and arbor First reduction wheel and arbor
Pawl lever
Reduction wheel holder
Version-03
Cal.NE20C
TECHNICAL GUIDE
38
42
41
8
(1)
SII Products
40
40
39
36
Type of oil Oil quantity mark
Moebius 9010 S-6 NORMAL QUANTITY
S-4 SUFFICIENTQUANTITY
*1
*1
*2
*3 *2 *3
*4

Planet unit Second sun wheel
Notes:
*2 Oil to between the arbor pinion and the gear.
Sun and planet unit
Sun wheel
2.Method of identifying day jumper and date jumper Day jumper
*There is no bend at the spring.
Date jumper
*There is a bend at the spring.
3.Disassembling / assembling of the first reduction wheel and arbor
First reduction wheel and arbor
Reduction wheel holder
Barrel and train wheel bridge with hole jewel (back side)
36
<< Disassembling >>
<< Assembling >>
9
(2)
38
SII Products
TECHNICAL GUIDE
Version-03
Cal.NE20C
40
7
8
9
12
15
Day-date jumper
*2
Type of oil Oil quantity mark
Moebius 9010 S-6 NORMAL QUANTITY
S-4 SUFFICIENTQUANTITY
Side
view

4.Disassembling / assembling of the cannon pinion
Cannon pinion
5.Setting position (Refer at the time of disassembling and reassembling)
䞉To Date / Day driving wheels setting position
Notes: Set a tooth of Day / Date stars toward the notch of Day / Date driving wheels.
Day star
Day driving wheel
Date star
Date driving wheel
䞉Position confirmation by the movement
Day driving wheel confirmation window Day star
Day driving wheel
Auxiliary train wheel bridge
Date star
Date driving wheel confirmation window Date driving wheel
*The correct positions of Day / Date stars and Day / Date driving wheels should be confirmed from the
confirmation window at the same time.
Version-03
Cal.NE20C
13
11
10
Push
<< Assembling >>
TECHNICAL GUIDE
10
SII Products
UP
22
<< Disassembling >>
14
Day driving wheel
confirmation window
Date driving wheel
confirmation window
㻌 㻌 㻼㼍㼞㼠㻌
㼑㼤㼜㼍㼚㼟㼕㼛㼚㻌
㻌

6.Disassembling / assembling of the Ratchet sliding wheel spring.
Ratchet sliding wheel spring
Barrel and train wheel bridge with hole jewel
7.Assembling position of oscillating weight
䞉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
Version-02
Cal.NE20C
TECHNICAL GUIDE
Remove the hook of the ratchet sliding wheel spring
from barrel and train wheel bridge with hole jewel.
SII Products
11
<< Disassembling >>
<< Assembling >>
37
36
The hooks of the ratchet sliding wheel spring are hung
up on barrel and train wheel bridge with hole jewel.
Enlarged
view
PUSH

8.To remove the winding stem
1) Set the winding stem to normal position.
2) Pull out the winding stem, while pushing "A"
Setting lever
Winding stem
9.Accuracy adjustment
Regulator
Regulator pin
Stud support
Note:
䞉䞉Regulator … Time adjustment
䞉䞉Stud support … Beat error adjustment
䞉䞉Regulator pin … Gap adjustment of balance spring and regulator pin
12
Version-02
Cal.NE20C
Anticlockwise rotation
No clockwise rotation
TECHNICAL GUIDE
56
54
SII Products
(+) side
(-) side
A

10.To wind up the mainspring
<<Movement>>
Screwdriver winding … Turn the ratchet wheel screw 8 times clockwise.
Screwdriver
Ratchet wheel screw Ratchet wheel
11.How to attach hands
Place the movement directly on a flat metal plate or something similar to attach the hands.
Static weighting
We recommend the use of movement holder to attach hands.
For hands attachment, please use a special equipment.
When the movement receives a strong shock, it may be damaged.
<<Note: Power reserve hand setting>>
(1)The mainspring should be fully wound up before setting power reserve hand.
(2)Set power reserve hand at the fully wound up position of the dial graduation.
Fully wound state
[ Hand setting position ]
Auxiliary main plate pin
Not fully wound state
[ Image design ]
12.Accuracy measurement condition
Static Accuracy : -15~+25 seconds per day
Measurement Conditions
1) Measurement should be done within 10~60 minutes after fully wound up.
2) Lift angle : 52 deg.
3) Measurement position : (1) Dial up (2) 9 o'clock up (3) 6 o'clock up
4) Minimum measurement Time : 20 seconds
5) Stabilizing Time :
Leave the watch for at least 20 seconds to stabilize after you change its measurement position.
[ Screwdriver winding ]
TECHNICAL GUIDE
Setting position
of power reserve
hand
Intermediate power reserve wheel
SII Products
13
Version-03
Cal.NE20C
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 ]
[ HOW TO CHECK ]
Metal plate
Enlarged
view

[operation manual ]
Hour hand Minute hand
Power reserve hand Crown at normal position
Second click
Second hand
First click
Date hand
Day hand
1.How to set the time
1) Pull out the crown to the second click position.
2) Turn the crown to set hour and minute hands.
(Check that AM/PM is set correctly.)
3) Push the crown back into the normal position.
*When time setting is performed in counterclockwise, day and date hands reverses.
Please reset by day-date correction.
2.How to set the Day-date hands
1) Pull out the crown to the first click position.
2) Turn the crown to left for date setting.
3) Turn the crown to right for day setting.
* Do not set the calendar between 9:00 P.M. and 2:00 A.M. If the setting of the calendar is made during this period,
the day or date will not change to the next day or date. Please set the calendar after changing the time other than
the above period.
4) Push the crown back into the normal position.
3.To wind up the mainspring
a) 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 machine.
Full wind up conditions
䞉Rotary speed : 30 rpm
䞉Operating time : 60 minutes
Version-02
Cal.NE20C
OPERATION
SII Products
14