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Copyright © 19982022 by Michael P. Murray & Mike's Clock Clinic
Mike's Clock Clinic
P. O. Box 562
1151 D Street
Fossil, OR 978300562
Phone: 5413702440
Email address: Mike@atmosman.com
MCC's Web site is located at http://www.atmosman.com
Index of Motor and Rotor & Resources by Category: Listing of Telechron Rotors by their "M" # Information Found on the Rotor Coil & Plate Information $140.00 36 Tooth Pinion for Most "B" Chiming Clocks $65.00 Fiber (phenolic) gears for most Mastercrafters and Sessions Electrics $65.00 Payments What if you electric clock needs additional service
Telechron Rotors by Sequential Numbers Listing of Telechron Rotors by their "M" # All Telechron rotors are no longer in production from ANY source. I have many rotors rebuilt and in stock. Any rotor that is not in my stock I can rebuild even the aluminum ones. Any rebuilt Telechron "B" rotor can have any shaft you'd need. Once I open up a "B" rotor I can install any configuration of shaft or pinion. The Telechron rotors that I sell at: http://www.atmosman.com/rotor.html , are the copper and nickel rather than the aluminum that were made from the early 1970's. I don't list or sell any 50 cycle rotors. There is a great book on the subject of Telechron/G.E. clock and it's called, "Electrifying Time" by Jim Linz. Please be aware that the procedure described in the book as "New Life into Dead Rotors" is flawed. The reason is that he suggests using lacquer thinner. Lacquer thinner will slowly destroy phenolic wheels, which are employed in all Telechron rotors. The Telechron "B" rotor was in production as early as 1919 and, the "B3" has the greatest torque followed by the "B2". The "M" number of the rotor was Telechron's way of identifying the customer and not the rotor. It has some significance in "B" rotors but all 3.6 rpm "H's" have the same torque.
Number Type RPM Shaft & Description Wattage [If known] M1 B2 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) 2 watts M1 B2 1 1/8x1/2 With 9Tooth Gear (Pinion) 2 watts M2 B2 1 2 watts M4 B2 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) 2 watts M5 B2 1 18Tooth Gear (Pinion) 2 watts M11 B 4 1/8x1/2 Solid Round M11 B 1 1/8x1/2 Solid Round with Flat M12 B3 1 12Tooth Gear (Pinion) 4 watts M12 B3 1 1/8x1/2 Solid Round with Hole in shaft 4 watts M14 B3 60 9Tooth Gear (Pinion) 4 watts M15 B3 1 Long shaft, Long pinion, Hold end M16 B3 1 1/8x1/2 Solid Round with Flat 4 watts M22 C 2 3/16x2/5 Solid Round (Pinion) 6 watts M31 B3 1 1/8x1/2 Solid Round with Flat 4 watts M38 B2 1 1/8x1/2 Solid Round with Flat 2 watts M45 M48 B2 1 2 watts M60 B 1 1/8x1/2 Solid Round with Flat M99 B 1 8 watts M103 B 4 1/8x1/2 Solid Round with Flat M150 B3 60 1/8x1/2 Solid Round M163 B 4 1/8x1/2 Solid Round with Flat M165 B3 1 1/8x1/2 Solid Round 5 watts M168 B3 1 1/8x1/2 Solid Round With Hole on the side of the Shaft 4 watts M168 B3 1 1/8x1/2 Solid Round 4 watts Number Type RPM Shaft & Description Wattage [If known] M195 B 4 1/8x1/2 Solid Round with Flat M209 B3 1 1/8x1/2 Solid Round with Flat 4 watts M211 B2 1 1/8x1/2 Solid Round With Hole on the side of the Shaft M216 B2 1 1/10x1/2 Hole With 11Tooth Gear (Pinion) M217 B2 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) 2 watts M220 BMX 1 1/8x1/2 Solid Round with Flat (Takes two fields and coils) 4 watts M220 BMX 1 1/8x1/2 Solid Round (Takes two fields and coils) 4 watts M245 B2 1 Extra long shaft with hole end and 9Tooth Gear (Pinion) M315 H18 3.6 M348 B M413 B3 1 1/8x1/2 Solid Round with Flat 4 watts M454 B M519 F1 3.6 10Tooth Output Gear (Pinion) M538 B 1 1/8x1/2 Solid Round M547 B2 1 5/32" Reverse threaded shaft 5 watts M579 H 3.6 10Tooth Output Gear (Pinion) M583 B2 1 1/8x1/4 Solid Round 2 watts M591 B2 1 1/8x1/2 Solid Round M615 M625 B M639 B6 1 12Tooth Output Gear (Pinion) M667 F1 3.6 10tooth Output Gear (Pinion) M714 H 3.6 10Tooth Output Gear (Pinion) M768 H 3.6 10Tooth Output Gear (Pinion) M776 B8 1 1/8x1/2 Solid Round M808 B9 60 1/8x1/2 Solid Round 5 watts M810 B9 1 1/8x1/2 Solid Round 5 watts M861 B9 1 1/8x1/2 Solid Round 5 watts M892 M959 B8 1 M1000 B3 30 1/8x1/2 Solid Round 5 watts M1001 BF 1 36Tooth Output Gear (Pinion) M1024 BF 1 36Tooth Output Gear (Pinion) M1028 B 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) M1038 B3 3 1/8x1/2 Solid Round M1040 M1145 H 3.6 10Tooth Output Gear (Pinion) Number Type RPM Shaft & Description Wattage [If known] M1162 B 1 1/8x1/2 Solid Round with Flat M1181 B2 1 Threaded Output Gear (Pinion) M1198 H Output Gear (Pinion) M1223 B3 1 1/8x1/2 Solid Round With Hole on the side of the Shaft M1228 B3 1 1/8x1/2 Solid Round With Hole on the side of the Shaft M1308 *M1313 H3 3.6 10Tooth Output Gear (Pinion) *M1321 H3 3.6 10Tooth Output Gear (Pinion) M1343 H Output Gear (Pinion) M1379 BF 1 18Tooth Output Gear (Pinion) M1386 B3 6 1/8x1/2 Solid Round with Flat 4 watts M1417 M1432 H Output Gear (Pinion) M1444 B2 1 10Tooth Output Gear (Pinion) M1449 M1475 B2 1 12 watts M1486 B8 1 1/8x1/2 Solid Round 2 watts M1519 H 3.6 10Tooth Output Gear (Pinion) M1525 B 1/8x1/2 Solid Round M1583 B7 1 1/8x1/2 Solid Round M1605 B9 60 1/8x1/2 Solid Round 5 watts M1630 H3 3.6 10Tooth Output Gear (Pinion) M1631 H 3.6 10Tooth Output Gear (Pinion) M1664 M1672 M1676 H Output Gear (Pinion) M1678 H 3.6 10Tooth Output Gear (Pinion) M1694 C5 1 12Tooth Output Gear (Pinion) 6 watts M1710 B2 1 2 watts M1721 B9 1 1/8x1/2 Solid Round M1726 B3 1 1/8x1/2 Solid Round M1726 B3 1 1/8x1/2 Solid Round With Hole on the side of the Shaft M1747 B8 1 1/8x1/2 Solid Round 2 watts M1778 B8 1 1/8x1/2 Solid Round M1794 BC 60 1/8x1/2 with 10 tooth pinion .35" length 6 watts M1801 M1806 B 60 1/8x1/2 Solid Round M1809 B3 4 1/8x1/2 Solid Round with Flat 4 watts M1812 B 60 1/8x1/2 Solid Round M1816 M1830 B 1 1/8x1/2 Solid Round M1960 B3 1 4 watts M2017 B3 1 1/8x1/2 Solid Round With "I" Shaft at end Number Type RPM Shaft & Description Wattage [If known] M2023 H 3.6 10Tooth Output Gear (Pinion) M2028 M2034 H5 1/60 M2038 B9 30 1/8x1/2 Solid Round 5 watts M2052 H3 3.6 10Tooth Output Gear (Pinion) M2055 B3 4 1/8x1/2 Solid Round (Used in Nutone 20 volts, 4 watts) M2056 M2060 M2066 M2070 M2074 M2088 M2106 M2124 BF 1 36Tooth Output Gear (Pinion) M2135 B15 Output Gear (Pinion) M2146 H 3.6 10Tooth Output Gear (Pinion) M2150 M2184 B 1/8x1/2 Solid Round M2200 B3 4 1/8x1/2 Solid Round (Used in Nutone 20 volts, 4 watts) M2205 M2229 B15 Output Gear (Pinion) M2244 B3 1 1/8x1/2 Solid Round M2260 B2 1 1/8x1/2 Solid Round M2269 M2270 M2275 H3 3.6 10Tooth Output Gear (Pinion) M2309 H3 3.6 10Tooth Output Gear (Pinion) M2317 H3 3.6 10Tooth Output Gear (Pinion) M2319 H3 3.6 10Tooth Output Gear (Pinion) M2322 H 3.6 10Tooth Output Gear (Pinion) M2327 H 3.6 Output Gear (Pinion) M2334 H3 3.6 10Tooth Output Gear (Pinion) M2337 B 1 M2347 H Output Gear (Pinion) M2360 M2370 H7 1 1/64 X 6/16 solid round M2374 B2 1 Threaded Output Gear (Pinion) M2375 H3 3.6 10Tooth Output Gear (Pinion) M2376 B2 1 Threaded Output Gear (Pinion) M2377 B3 1 1/8x1/2 Solid Round with Flat 4 watts M2378 Number Type RPM Shaft & Description Wattage [If known] M2379 M2381 B3 1 12Tooth Output Gear (Pinion) M2387 B M2394 H3 3.6 10Tooth Output Gear (Pinion) M2396 H 3.6 10Tooth Output Gear (Pinion) M2397 B2 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) M2397 B2 1 1/8x1/2 Hole Round M2398 H 3.6 10Tooth Output Gear (Pinion) M2401 B2 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) M2405 M2409 B 1/8x1/2 Solid Round M2431 B M2432 M2440 M2442 B15 Output Gear (Pinion) M2445 B15 Output Gear (Pinion) M2451 B14 1 1/8x1/2 Solid Round M2453 B M2457 M2459 B3 1 9tooth long Output gear (Pinion) 4 watts M2475 H 3.6 10Tooth Output Gear (Pinion) M2481 B13 1 1/8x1/2 Solid Round 5 watts M2484 B 4 1/8x1/2 Solid Round *M2487 H3 3.6 10Tooth Output Gear (Pinion) M2492 S1 3.6 Output Gear (Pinion) (Aluminum) M2497 M2501 M2510 B3 1 1/8x1/4 Solid Round 4 watts M2510 B3 1 1/8x1/2 Solid Round 4 watts M2510 B3 1 1/8x1/2 Solid Round With Hole on the side of the Shaft 4 watts M2515 B2 1 1/8x1/2 Hole Round M2515 B2 1 1/8x1/2 Hole Round with Hole end M2516 M2518 BF 1 36Tooth Output Gear (Pinion) M2519 BF 1 18Tooth Output Gear (Pinion) M2525 B 2 1/8x1/2 Solid Round M2528 M2529 B3 4 1/8x1/2 Solid Round M2535 BC 60 1/8x1/2 Solid Round M2538 BMX 1 1/8x1/2 Solid Round (Takes two fields and coils) Number Type RPM Shaft & Description Wattage [If known] M2565 B 60 1/8x1/2 Solid Round M2587 BC 60 1/8x1/2 with 10 tooth pinion .35" length 6 watts M2604 B3 60 1/8x1/2 Solid Round M2613 B 1 1/8x1/2 Solid Round M2614 B3 1 1/8x1/2 Solid Round 4 watts M2636 B3 1 1/8x5/32 Solid Round with Short Shaft 4 watts M2636 B3 1 Output Gear (Pinion) M2644 B3 1 M2653 B3 1 1/8x1/2 Solid Round M2667 M2670 B M2675 BF 1 36Tooth Output Gear (Pinion) M2676 H3 3.6 10Tooth Output Gear (Pinion) M2679 B13 30 1/8x1/2 Solid Round 5 watts M2682 H 3.6 10Tooth Output Gear (Pinion) M2687 H7 1 Round M2690 H7 2 Round M2692 H7 3 Round M2698 H7 6 Round M2700 C5 1 16Tooth Output Gear (Pinion) 6 watts M2703 C5 2 6 watts M2706 C5 4 6 watts M2709 C5 M2712 C5 1 12 watts M2723 M2726 M2737 B3 60 1/8x1/2 Solid Round 6 watts M2738 B3 1 1/8x1/2 Solid Round M2738 B3 1 1/8x1/2 Solid Round With Hole on the side of the Shaft M2776 C5 1 16Tooth Output Gear (Pinion) 6 watts M2782 BC 60 9Tooth Output Gear (Pinion) M2790 B3 30 1/8x1/2 Solid Round 5 watts M2835 B11 1 1/8x5/16 Output Gear (Fiber plates) 4 watts M2860 M2864 B3 4 watts M2934 B13 0.5 4 watts M3019 B2 1 3/32x1/2 Hole with 10 tooth gear (Pinion) M3025 H10 3.6 10Tooth Output Gear (Pinion) 4 watts M3042 H10 3.6 10Tooth Output Gear (Pinion) 4 watts M3046 B15 Output Gear (Pinion) M3047 B15 Output Gear (Pinion) M3069 B2 1 1/8x1/2 Solid Round Number Type RPM Shaft & Description Wattage [If known] M3072 S 3.6 Output Gear (Pinion) (Aluminum) M3083 S 3.6 Output Gear (Pinion) (Aluminum) M3084 M3097 H 3.6 10Tooth Output Gear (Pinion) M3103 H Output Gear (Pinion) M3107 B 1 1/8x1/2 Solid Round *M3110 H3 3.6 10Tooth Output Gear (Pinion) M3126 B 1 1/8x1/2 Solid Round M3130 M3136 H 3.6 Output Gear (Pinion) M3140 C5 1 16Tooth Output Gear (Pinion) M3141 S 3.6 Output Gear (Pinion) (Aluminum) M3150 H18 3.6 10Tooth Output Gear (Pinion) M3151 H18 3.6 10Tooth Output Gear (Pinion) M3154 S1 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3156 S 3.6 Output Gear (Pinion) (Aluminum) M3162 S 3.6 Output Gear (Pinion) (Aluminum) M3163 B 60 1/8x1/2 Solid Round M3178 BC3 30 1/8x1/2 Solid Round M3186 M3191 B13 1 1/8x1/2 Solid Round 5 watts M3210 B13 30 1/8x1/2 Solid Round 5 watts M3215 B 60 1/8x1/2 Solid Round M3218 H3 14.4 17Tooth Output Gear (Pinion) 2 watts M3230 H 3.6 Output Gear (Pinion) M3235 BC3 60 1/8x1/2 Solid Round (Aluminum) 6 watts M3243 S4 3.6 15Tooth Output Gear (Pinion) (Aluminum) M3296 S 3.6 Output Gear (Pinion) (Aluminum) M3310 S4 3.6 15Tooth Output Gear (Pinion) (Aluminum) M3313 S4 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3326 S 3.6 Output Gear (Pinion) (Aluminum) M3327 S4 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3331 S 3.6 Output Gear (Pinion) (Aluminum) M3333 S 3.6 Output Gear (Pinion) (Aluminum) M3373 BMX 1 1/8x1/2 solid round 10Tooth Output Gear (Pinion) (Takes two fields and coils) M3378 S5 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3388 B16 1 1/8x1/2 Solid Round M3394 S 3.6 Output Gear (Pinion) (Aluminum) M3395 S 3.6 Output Gear (Pinion) (Aluminum) M3400 S 3.6 Output Gear (Pinion) (Aluminum) Number Type RPM Shaft & Description Wattage [If known] M3401 H3 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3403 H Output Gear (Pinion) M3404 S5 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3413 B16 1 1/8x1/2 Solid Round M3420 B15 Output Gear (Pinion) M3420 H 3.6 10Tooth Output Gear (Pinion) M3424 H 3.6 10Tooth Output Gear (Pinion) M3473 H3 14.4 17Tooth Output Gear (Pinion) (Aluminum) 2 watts M3476 S 3.6 Output Gear (Pinion) (Aluminum) M3479 S 3.6 Output Gear (Pinion) (Aluminum) M3481 S1 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3485 H Output Gear (Pinion) M3486 S 3.6 Output Gear (Pinion) (Aluminum) M3497 H 3.6 10Tooth Output Gear (Pinion) M3499 H 3.6 10Tooth Output Gear (Pinion) M3502 B 1 1/8x1/2 Solid Round M3504 B16 M3506 B13 1 1/8x1/2 Solid Round (Aluminum) M3506 B13 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) (Aluminum) M3508 S 3.6 Output Gear (Pinion) (Aluminum) M3509 S1 3.6 9Tooth Output Gear (Pinion) (Aluminum) M3514 M3515 B 0.5 1/8x1/2 Solid Round M3518 M3520 S1 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3522 S 3.6 Output Gear (Pinion) (Aluminum) M3524 S1 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3528 S 3.6 Output Gear (Pinion) (Aluminum) M3533 S 3.6 Output Gear (Pinion) (Aluminum) M3536 B13 1 1/8x1/2 Solid Round with Flat (Aluminum) M3538 B15 10Tooth Output Gear (Pinion) M3542 B15 1 10Tooth LONG Output Gear (Pinion) (Aluminum) 4 watts M3545 B 1 1/8x1/2 Solid Round M3546 B13 2 1/8x1/2 Solid Round (Aluminum) 4 watts M3548 B 4 1/8x1/2 Solid Round M3556 B15 Output Gear (Pinion) M3575 BC3 60 1/8x1/2 Solid Round (Aluminum) 6 watts M3580 BC3 60 1/8x1/2 Solid Round 10Tooth Gear (Pinion) (Aluminum) 6 watts M3583 BC3 60 1/8x1/2 Solid Round 12 or 15Tooth Gear (Pinion) (Aluminum) 6 watts Number Type RPM Shaft & Description Wattage [If known] M3584 M3586 B 57.6 1/8x1/2 Solid Round M3595 S1 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3609 B13 1 1/8x1/2 Hole With 9Tooth Gear (Pinion) (Aluminum) M3609 B13 1 Round with Gear (Pinion) (Aluminum) M3610 B 1/8x1/2 Solid Round M3614 H 3.6 10Tooth Output Gear (Pinion) M3617 H 3.6 10Tooth Output Gear (Pinion) M3619 S 3.6 Output Gear (Pinion) (Aluminum) M3628 H18 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3630 H 3.6 Output Gear (Pinion) M3632 H3 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3633 S1 3.6 10Tooth Output Gear (Pinion) (Aluminum) M3634 S 3.6 Output Gear (Pinion) (Aluminum) M3635 S1 3.6 10ToothOutput Gear (Pinion) (Aluminum) M3637 S1 3.6 10Tooth Output Gear (Pinion) (Aluminum) 3 watts M3639 S 3.6 Output Gear (Pinion) (Aluminum) M3641 S1 3.6 Output Gear (Pinion) (Aluminum) M21003 EC2 60 1/8x1/2 Solid Round with Flat TYPE (B?) Measures 11/4" in Diameter X 15/8" high TYPE (H?) Measures 13/32" in Diameter X 7/8" high TYPE (S?) Measures 11/16" in Diameter X 13/16" high TYPE (C?) Measures 21/2" in Diameter X 2 1/16" high TYPE (F?) Measures 23/16" in Diameter X 15/16" high The F has two screw holders built ring into the steel cast. These "F's" were made during World War II in order to conserve copper. * Some of these types were retrofitted to replace the F rotor. (M1313, M1321, M2487, & M3110) Return to Index
Information on the Rotor The type of rotor (B3, B2, H3, etc.), TOP (This is significant because all rotors are self lubricating and the word TOP must point straight up for the self lubrication to be its most efficient.) The "M" # (M1, M31, M38 etc.) The RPM's of the rotor (RPM), The current in cycles (CY), A production number Return to IndexCoil & Plate Information Information on Telechron coils is intended as a user guide because many past repair people just grabbed any coil that they could get there hands on and for longer life of the clock and rotor, you should seriously consider replacing the coil if your is not the proper wattage. If your clock is "humming" and the rotor is not at fault, then your coil could be oversized for the field. Meaning that if your coil was replaced with an oversized coil, then that will produced a hum which some cannot diagnose. The "plate" over the back of the rotor has all the information you need. This plate cover contains the following information:
All coils cost $125.00 plus the $20.00 shipping (Canada is $45.00), if that is all you order,
otherwise the same shipping package can be used if you order the
motor/rotor at the same time, so no additional shipping costs are
necessary.
To determine whether or not you need a coil, you can take a Multimeter or Volt/Ohm meter, these are less than $20.00 at any hardware store, and with no current on the motor, set the meter to Ohms and touch the two leads to the end of the wires or the posts where the wires connect and see if you get a reading. Just about any reading is a good one and if you can see the coil #, that represents the Ohm reading so if your coil is a # 60 coil then you should get about 60 or 600 ohms depending on the setting of the meter.

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A service from, Mike Murray
Email address: Mike@atmosman.com
Founder of Clocksmiths
A specialist in Atmos and 400day clock repair.
Also, I overhaul most plug in electric clocks. In continuous service since 04/01/1982.
Mike's Clock Clinic Memberships: Clocksmiths & NAWCC
Phone: 5413702440
My Web site is located at http://www.atmosman.com/
Main FTP site is located at
http://www.atmosman.com/earthpdf.html
Copyright © 19982022 by Michael P. Murray & Mike's Clock ClinicI, Mike Murray, make no claims as to the accuracy or completeness for the Telechron rotor information. But I have made every effort to make sure that the information is accurate. I was given this information many years ago and have continually updated for accuracy.
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