© Telechronclock LLC
Telechron Rotor Technical Reference Information
Note: this will always be work in process as different rotor versions are discovered. (Last updated 2/12/15)
The most important information needed to match a rotor is the style, speed and cycles that are marked on the rotor. (not the clock's nameplate). The next step is a description of the output shaft/pinion gear. The M# is generally not a reliable identifier.
Rotor Style |
RPM |
Case |
Output Shaft/Pinion Gear |
Common M#’s |
Comments |
B- |
1 |
Brass |
1/8" X 1/2" Hollow w/9 tooth gear |
1 |
|
B- |
1 |
Brass |
1/8" X 1/2" Solid |
|
|
B- |
1 |
Brass |
R.H. Threaded shaft for Cam |
|
Horizontal Cyclometer |
B- |
1 |
Brass |
L.H. Threaded shaft for Cam |
547 |
Vertical Cyclometer |
B- |
1 |
Brass |
Unique 1/16" Needle Shaft w/9 tooth gear |
348, 2453 |
|
B- |
1 |
Nickel/Brass |
1/8" X 1/2" Hollow w/9 tooth gear |
38, 1525, 2409, 2377, 2397, 5 |
|
B- |
1 |
Nickel/Brass |
1/8" X 1/2" Solid |
1, 38, 583 |
|
B- |
1 |
Nickel/Brass |
1/8" X 5/8" Hollow w/9 tooth gear |
2515, 245, 247 |
|
B- |
1 |
Nickel/Brass |
R.H. Threaded shaft for Cam |
2376, 1181 |
Horizontal Cyclometer |
B- |
1 |
Nickel/Brass |
L.H. Threaded shaft for Cam |
2374 |
Vertical Cyclometer |
B- |
1 |
Nickel/Brass |
Small 3/32" X 1/2" Hollow w/9 tooth gear |
216 |
|
B- |
1@50 Hz |
|
1/8" X 1/2" Hollow w/9 tooth gear |
509 |
|
B- |
1 |
Brass |
1/8" X 1/2" Solid |
31, 209 |
|
B- |
1 |
Nickel/Brass |
1/8" X 1/2" Solid |
2510, 2377, 31, 168(all brass gears), 2738, 377, 2184, 3046, 2381, 3269. 12, 1726(all brass gears) |
|
B- |
4 |
Nickel/Brass |
1/8" X 1/2" Solid |
1809 |
|
B- |
4 |
Nickel/Brass |
1/8" X 1/4" Short Solid |
2200 |
|
B- |
2 |
Brass |
1/8" X 1/2" Solid |
179 |
|
B- |
6 |
Brass |
1/8" X 1/2" Solid |
1386 |
|
B- |
6 |
Nickel/Brass |
10 tooth 3/8" long gear |
3317 |
|
B- |
1 |
Nickel/Brass |
10 tooth large pinion gear |
1262 |
|
B- |
1 |
Nickel/Brass |
1/8" X 1/4" Short Solid Shaft w/10 tooth gear |
2835 |
Looks like B- |
B- |
1 |
Nickel/Brass |
1/8" X 1/2" Solid |
2457, 3186, 2481, 3191, 3406 |
|
B- |
1 |
Aluminum |
1/8" X 1/2" Solid |
3506, 3610, 3556, 3536 |
|
B- |
1 |
Nickel/Brass |
20 tooth Short |
3186 |
|
B- |
1 |
Aluminum |
13 tooth Short |
3556 |
|
B- |
1 |
Aluminum |
12 tooth, Hollow, Short |
3610 |
|
B- |
2 |
Aluminum |
1/8" X 1/2" Solid |
3546 |
|
B- |
30 |
Nickel/Brass |
1/8" X 1/2" Solid |
2679, 1000, 3210 |
|
B- |
1/2 |
Aluminum |
1/8" X 1/2" Solid |
3515 |
|
B- |
30 |
Aluminum |
1/8" X 1/2" Solid |
3514 |
|
B- |
60 |
Aluminum |
1/8" X 1/2" Solid |
3513 |
|
B- |
3 |
Nickel/Brass |
1/8" X 1/2" Solid |
3200 |
|
B- |
1 |
Brass |
1/8" X 1/2" Solid |
1721, 810 |
Plug in tail |
BC |
60 |
Nickel/Brass |
9 tooth gear |
? |
|
BC |
60 |
Nickel/Brass |
1/8" X 1/2" Solid |
2782 |
|
BC |
57.6 |
Nickel/Brass |
|
|
Traffic Light Controller |
BC3 |
60 |
Aluminum |
1/8" X 1/2" Solid |
3583 |
|
BC3 |
60 |
Aluminum |
10 tooth gear |
3583 |
|
B- |
60 |
Brass |
1/8" X 1/2" Solid or 9 tooth |
14 |
|
B- |
60 |
Nickel/Brass |
9 tooth gear |
2497 |
|
B- |
60 |
Nickel/Brass |
1/8" X 1/2" Solid |
2737 |
|
BF |
1 |
Nickel/Brass |
|
892 |
|
BF- |
1 |
Nickel/Brass |
18 tooth gear |
1664 |
|
BF- |
1 |
Brass |
36 tooth gear |
1024 |
|
BF- |
1 |
Nickel/Brass |
36 tooth gear (13/16" O.D.) |
2387, 2124 |
|
BF- |
1 |
Nickel/Brass |
18 tooth gear |
2519, 2431 |
|
BF- |
1 |
Nickel/Brass |
36 tooth gear (9/16" O.D.) |
2518 |
|
BF- |
1 |
Nickel/Brass |
36 tooth gear (3/4" O.D.) |
1001, 1024, 2670, 2440 |
|
BF- |
1 |
Nickel/Brass |
18 tooth gear |
1379 |
|
BF- |
1 |
Nickel/Brass |
36 tooth gear (13/16” O.D.) |
2575, 2675 |
|
B- |
1 |
Nickel/Brass |
Clutch in end cap |
|
|
B- |
4 |
Nickel/Brass |
1/8" X 1/2" Solid |
2484 |
|
B- |
1 |
Nickel/Brass |
1/8" X 1/2" Solid |
3388 |
Short tail like BF |
B- |
1 |
Aluminum |
1/8" X 1/2" Solid |
3504, 3510 |
Short tail like BF |
BCM |
60@50 Hz |
Nickel/Brass |
|
2495, 2600 |
12 Watt |
BCM |
60 |
Nickel/Brass |
|
2538, 2598 |
12 Watt |
BCM |
1 |
Nickel/Brass |
|
2600 |
12 Watt |
BMX |
1 |
Nickel/Brass |
1/8" X 1/2" Solid |
2538 |
12 Watt |
BNS |
1 |
Brass |
|
|
4 Watt, Early style |
BX |
30 |
Brass |
Gear on end |
817 |
12 Watt, forward/reverse motor for Navy slave clock |
B- |
1 |
Nickel/Brass |
12 Tooth Gear, No Shaft |
2397 |
2 Watt, B- |
B- |
1 |
Brass |
1/8" X 1/2" Solid |
776, 1747 |
Plug in tail |
B- |
1 |
Nickel/Brass |
1/8" X 1/2" Solid |
1778 |
Plug in tail |
B- |
1 |
Nickel/Brass |
9 tooth gear, hollow shaft |
1778 |
Plug in tail |
B- |
1 |
Brass |
1/8" X 1/2" Solid |
1721, 810 |
Plug in tail |
B- |
60 |
Nickel/Brass |
1/8" X 1/2" Solid |
1690 |
Plug in tail |
B- |
1 |
|
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|
Plug in tail |
H- |
3.6 |
Nickel/Brass |
12 tooth gear |
1108 |
Plug in tail |
H- |
3.6 |
Nickel/Brass |
10 tooth gear |
1145 |
|
H- |
3.6 |
Nickel/Brass |
10 tooth gear |
1313, 1145, 768, 714, 1314, 1630 |
|
H- |
3.6 |
Copper |
10 tooth gear |
2394, 2275, 2309, 1313, 2317. 2052, 2582, 2319, 2685 |
|
H- |
3.6@50 Hz |
Copper |
10 tooth gear |
2685 |
|
H- |
3.6 |
Aluminum |
10 tooth gear |
3401, 3632, 3630 |
|
H- |
3.6 |
Nickel/Brass |
10 tooth gear |
2327, 2396, 2487, 1321, 2395, 1198, 3110 |
Long Shaft |
H- |
14.4 |
Aluminum |
17 tooth gear |
3473 |
|
H- |
14.4 |
Nickel/Brass |
10 tooth gear |
3218 |
|
H- |
3.6 |
Nickel/Brass |
12 tooth gear |
1676 |
|
H- |
135 RPM |
Copper |
10 tooth gear |
2473 |
|
H- |
3 RPH |
Nickel/Brass |
13 tooth gear |
2050 |
|
H- |
1 RPH |
Nickel/Brass |
|
2074 |
|
H- |
1 RPH |
Nickel/Brass |
Clutch Gear |
2370 |
|
H- |
1 RPH |
Nickel/Brass |
Center Shaft |
2687 |
|
H- |
3.6 |
Copper |
10 tooth gear |
3025, 3042, 3230 |
Long tail, 4 vane |
H- |
3.6 |
Copper |
10 tooth gear |
2996 |
Looks like H- |
H- |
3.6 |
Copper |
10 tooth gear |
3150 |
3 vanes |
H- |
3.6 @ 50 Hz |
Aluminum |
10 tooth gear |
3531 |
|
F- |
3.6 |
Nickel/Brass |
10 tooth gear |
519 |
|
F- |
3.6 |
Nickel/Brass |
10 tooth gear |
667 |
Long Shaft |
F- |
3.6@25 Hz |
Nickel/Brass |
10 tooth gear |
523 |
|
S- |
3.6 |
Aluminum |
10 tooth gear |
3509, 3154 |
|
S- |
3.6 |
Aluminum |
10 tooth gear |
3296, 3313 |
|
S- |
3.6 |
Aluminum |
15 tooth gear |
3243, 3310 |
|
S- |
3.6 |
Aluminum |
10 tooth gear |
3404, 3378 |
|
S- |
3.6 |
Aluminum |
10 tooth gear |
3487 |
|
C- |
1 |
Nickel/Brass |
|
2700, 1557 |
Tower Clock, 6 watt tail |
C- |
1 |
Brass |
16 tooth gear |
2712 |
Tower clock, 12 watt tail |
C- |
2 |
Nickel/Brass |
|
2703 |
Tower Clock, 6 watt tail |
IM9K |
30 day |
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2835 |
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BC |
57.6 |
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Traffic Light Controller |
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