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Vintage Rock Tumbler Parts



Vintage Thumler's rock tumbler
This is a vintage Thumler's "Model A" rock tumbler from the late 1950s that was originally sold with paint cans instead of tumbler barrels. Thumler's has been using this same basic design for many years, and some of the current parts will fit their older tumblers. See our selection of Thumler's Tumbler parts.

What We Do and Do Not Sell



We sell parts for some of the current-model rock tumblers manufactured by two companies: Thumler's and Lot-o-Tumbler.

We do not sell parts for any other tumblers.


If you need parts for other tumblers, please contact the vendor who sold you the tumbler. If that vendor is out of business or does not have the parts, please contact the manufacturer of that tumbler. We have prepared a list of manufactuers to help you.

All of the information that we have about parts for other tumblers is written below. This is the same guidance that we provide when anyone contacts us about parts for brands that we do not sell.



Generic Belts and Motors


If you need a belt or other part for an extinct rock tumbler, you might be able to find something that will work at Stock Drive Products. They sell bearings, pulleys, motors, shafts, and other drive train parts. They have illustrations on their website to assist with sizing. Grainger is another source of stock motors, belts, pulleys, bearings, and other parts. These companies do not sell "rock tumbler parts". They sell generic parts used by manufacturers to build a wide variety of machines.
Skilcraft rock tumbler
An external view of a Skilcraft rock tumbler from 1972. Buy something like this if you collect old toys or old rock tumblers. If you buy it expecting to run it, you might not be able to find replacement parts, and your money might be better spent on a new tumbler.

Dozens of Extinct Manufacturers



Rock tumblers have been manufactured since the 1950s. In that time at least one hundred companies and basement manufacturers have invented tumblers, manufactured them, and then went out of business.

It is impossible to get parts for most of these tumblers.

Every week several people write to us asking about parts for extinct tumblers. They want to know if the parts that we sell will fit. We always write back with this message:

"We are sorry. We do not have parts for your tumbler. We can only recommend the parts that we sell for the tumblers specified by the manufacturer."


Auction, Yard Sale & Flea Market Tumblers



Lots of people purchase old rock tumblers at online auction sites, flea markets, and yard sales. They think that they made a great find. Then, when they try to run the machine, they discover that the belt is old and cracked, the motor is worn out, and the bearings are in bad shape.

Many of these tumblers never get back into action. Why? They need an impossible-to-find part. These tumblers end up being resold and resold again because the buyer can't find the parts needed to get them running again.

We used to watch Ebay for antique rock tumblers. We have seen the same vintage tumblers offered on Ebay by several different sellers. The first seller was getting rid of the machine. The first buyer received the machine and could not get the part, so he resold it on Ebay. The next person bought it, could not use it, and put it back up for sale on Ebay. You don't want to be the next guy in that chain!
Inside a skilcraft tumbler
A view inside of a Skilcraft rock tumbler from about 1972. As with many of the rock tumblers obtained at yard sales, the motor is rusted and you might get it home and discover that it does not work. The belt, shaft liners, and other plastic parts are likely to be old and deteriorated.

You Are Out of Luck If....

If you purchase a tumbler that is not in current production, because finding parts for it is probably going to be very difficult or impossible. Some popular brands of extinct tumblers include: Rapco, Hillquist, Little Gem, Victor, Skilcraft, Star Diamond and many others.

We don't know anyone who sells parts for these tumblers.

Vintage Rapco tumbler
View inside of a vintage Rapco "Tumble Stones" rock tumbler from about 1972. Parts for these tumblers are really hard to find. We don't know of any sources for these parts.


Where to Go If You Need a Part


If you need a belt or other part for an extinct rock tumbler, you might be able to find something that will work at Stock Drive Products. They sell bearings, pulleys, motors, shafts, and other drive train parts. They have illustrations on their website to assist with sizing. Grainger is another source of stock motors, belts, pulleys, bearings, and other parts. These companies do not sell "rock tumbler parts". They sell generic parts used by manufacturers to build a wide variety of machines.

RockTumbler.com Authors



Hobart King Hobart M. King has decades of rock tumbling experience and writes most of the articles on RockTumbler.com. He has a PhD in geology and is a GIA graduate gemologist. He also writes the articles about rocks, minerals and gems on Geology.com.