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Byers Gears

Byers drives are known for their precision and accuracy all over the world. The larger, research quality drive systems have been known to have no detectable error. Ed Byers has plenty of items in stock available for purchase. Please feel free to contact Ed Byers for the most recent inventory.




Worm Gear OD Number of Teeth Gear, Worm and Bearing Housing Slip-clutch bored up to 2" / 2" - 3" Packing and Shipping Complete Drive System
7.1" 252-th $ 370 $ 280 / $ N/A $FREE (lower USA) $ 650
10" 359/360-th $ 550 $ 280 / $ 400 $FREE (lower USA) $ 830 / 950
11 1/8" 442-th $ 760 $ 280 / $ 400 $FREE (lower USA) 1,040 / $1,160
12" 472-th $ 965 $ 280 / $ 400 $FREE (lower USA) 1,245 / 1,365
15" 359/360/480-th $ 1,595 $ 430 / $ 575 INQUIRE INQUIRE
18" 584-th INQUIRE INQUIRE INQUIRE INQUIRE
22 1/2" 718-th INQUIRE INQUIRE INQUIRE INQUIRE

* Complete drive system qoute includes - worm gear, worm + bearing housing, slip-clutch(up to 3"), reduction gears, and Hurst stepping OR Hurst synchronous motor.
* Custom gears not listed as well as larger slip-clutches are also available, contact Ed Byers
* Prices and availability are subject to change without notice


NEW BYERS 7.1" Drive, with 1" clutch, Worm Housing & Motor





THIS IS A NEW BYERS 7.1" SIDEREAL-RATE DRIVE, WITH A GOLD ANODIZED ALUMINUM SLIP-CLUTCH BORED TO FIT A 1-INCH SHAFT DIAMETER. THE PRECISION GROUND WORM IS MOUNTED IN A HOUSING. THE REDUCTION GEARS AND SYNCHRONOUS MOTOR WILL CAUSE YOUR TELESCOPE TO EXACTLY CANCEL THE EARTH"S ROTATION.

THE SLIP-CLUTCH IS ALL ALUMINUM -- GOLD ANODIZED. THE DRIVES ARE VERY HIGH-QUALITY. BYERS HAS MADE TELESCOPE DRIVES FOR OVER SIXTY YEARS AND IS KNOWN ALL OVER THE WORLD FOR THE HIGHEST ACCURACY AND QUALITY.

I WLL SHIP FREE TO ANYWHERE IN THE LOWER U.S.

CALL ED BYERS AT: 760-221-2127 -- IF YOU HAVE QUESTIONS

Price $650.00


NEW BYERS 7.1" Drive, with 1.5" clutch, Worm Housing & Motor





THIS IS A NEW BYERS 7.1" SIDEREAL-RATE DRIVE, WITH A GOLD ANODIZED ALUMINUM SLIP-CLUTCH BORED TO FIT A 1.5-INCH SHAFT DIAMETER. THE PRECISION GROUND WORM IS MOUNTED IN A HOUSING. THE REDUCTION GEARS AND SYNCHRONOUS MOTOR WILL CAUSE YOUR TELESCOPE TO EXACTLY CANCEL THE EARTH"S ROTATION.

THE SLIP-CLUTCH IS ALL ALUMINUM -- GOLD ANODIZED. THE DRIVES ARE VERY HIGH-QUALITY. BYERS HAS MADE TELESCOPE DRIVES FOR OVER SIXTY YEARS AND IS KNOWN ALL OVER THE WORLD FOR THE HIGHEST ACCURACY AND QUALITY.

I WLL SHIP FREE TO ANYWHERE IN THE LOWER U.S.

CALL ED BYERS AT: 760-221-2127 -- IF YOU HAVE QUESTIONS --------

Price $650.00


NEW BYERS 11 5/16" 360-th Drive, w/ 2" slip-clutch ball-bearing worm/housing





This is an inventory reduction sale. These drives have been reduced in price below what they cost to manufacture. They will not be sold at a lower price. When they are sold no more will ever be made. NEW BYERS 11-5/16" gear with matching worm. The spring-loaded/ball-bearing slip-clutch is bored to fit a 2-inch shaft diameter.

This drive is top-of-the-line. It is the most accurate drive system ever made by Byers Company. An article referring to the accuracy of this drive system can be found on cloudynights. The precision stainless steel worm runs in ball bearings.

I can substitute a 359-tooth (Sidereal-Rate) worm gear, instead of the 360-tooth. The cost is the same for either gear.

I WILL SHIP FREE TO ANYWHERE IN THE LOWER U.S Call Ed Byers --- 760-221-2127


NEW BYERS 11-5/16ths" Gear with Spring loaded Worm/Housing





NEW BYERS 11-5/16" gear with matching worm and spring-loaded housing.

This drive is top-of-the-line. It is the most accurate drive system ever made by Byers Company. The precision stainless steel worm runs in ball bearings, and the worm threads are spring-loaded into the gear teeth to prevent unwanted backlash. The worm housing is designed to compensate for low temperatures, thus, allowing for the expansion and contraction of the gear and the telescope mounting.

A slip-clutch can be supplied to suit the customer's needs. Price will be quoted after I know the shaft diameter.

I WILL SHIP FREE TO ANYWHERE IN THE LOWER U.S.

CALL ED BYERS AT 760-221-2127 -- IF YOU HAVE QUESTIONS --------

Price $1,750


NEW BYERS 11-1/8"-442-th Drive, Double-End Worm - 3" Clutch - Reduction Gears





This is a NEW BYERS 11-1/8" diameter -- 442-tooth Telescope Drive, With Spring-Loaded Slip-Clutch, Bored To Fit A 3.000-inch shaft diameter. I will supply at no extra cost, a reducing sleeve to fit a smaller shaft diameter, if you wish.

It has a double ended worm and bearing housing, clock reduction gears and synchronous motor. If you prefer I will substitute a Hurst Stepper Motor. No extra cost. This drive will track at true Sidereal-Rate.

I will ship it anywhere in the lower U.S. -- FREE

Call Ed Byers at; 760-221-2127 -- if you have questions.


NEW BYERS 15- 1/8" 480-th Drive, Double end ball-bearing worm/housing





This is a NEW BYERS 15-1/8" - 480-tooth worm gear and matching stainless double ended worm and ball-bearing worm housing. I can supply a slip-clutch --- price will be quoted after I know your shaft diameter. This is the last one.

I WILL SHIP FREE TO ANYWHERE IN THE LOWER U.S

$1,595


NEW BYERS 15"- 360-tooth Drive, With Ball Bearing Worm Housing - Servo Motor.





This is a NEW BYERS 15-inch diameter -- 360-tooth Telescope Drive.

It has a double-ended worm and Ball Bearing housing, clock reduction gears and Heavy-Duty servo motor, with 100 line encoder.

This is a high-precision drive designed for larger telescopes.

I can also supply a slip-clutch, bored to fit any shaft --- cost will be quoted after I know your shaft diameter.

F.O.B. Barstow, CA

Call Ed Byers at; 760-221-2127 -- if you have questions.


NEW BYERS 20-1/8" TELESCOPE DRIVE-- w/ ball-bearing spring-loaded worm/housing





NEW BYERS 20-1/8" 640-th drive w/ double-ended worm, ball-bearing/spring-loaded worm housing. This is the last one of this size. The gear is bored is at 6.00", either a reducer or a slip-clutch can be supplied to suit the

customer's needs. Price will be quoted after I know the shaft diameter.

I WILL SHIP FREE TO ANYWHERE IN THE LOWER U.S


NEW BYERS 22-5/8", 718-th Gear with Spring loaded Worm/Housing





NEW BYERS 22-5/8" 718-th drive w/ double-ended worm, ball-bearing/spring-loaded worm housing. The worm bearing housing is designed to operate at low temperature and is spring-loaded to keep the pressure of the worm threads against the gear teeth to prevent unwanted backlash. This is the LAST one of this size. The gear is bored is at 2.00", can be bored to customers specifications at no extra cost. A slip-clutch can also be supplied to suit the

customer's needs - Price of the clutch will be quoted after I know the shaft diameter.

This is the last large gear that will ever be available. The 718-teeth is exactly 1/2 Sidereal-Rate, thus it will track the stars exactly when the worm turns at 1 rotation in 2 minutes. If you have a large telescope or intend to build one in the future, this will be the last chance to get a Byers super accurate drive. Shipping cost will depend on the location of where it is shipped. Crating cost is $125 USD