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Frequently Asked Questions

Where are Carlisle belts by Timken made?

Almost all Carlisle belts are proudly made at Timken Belts plants located in Springfield, Missouri and Ft. Scott, Kansas – in the heart of the USA. We are an American company committed to American manufacturing and standards. A very small percentage of Carlisle belts are outsourced to provide a broader product offering. An icon system has been introduced in our catalog and on our website to identify each product that is made in the USA.





Can I purchase Carlisle belts from this website?

Carlisle belts are sold exclusively to original equipment manufacturers and through distributors. Carlisle belts cannot be purchased from our website. Please locate a distributor near you at: If you are a Carlisle belts by Timken distributor and would like to set up an e-commerce account, please call Customer Service at 866-773-2926.


Where can I obtain industrial belt drive design information?

Carlisle drive design and analysis software, Drive Engineer, is a mobile-friendly web application that can be accessed via our website or at PowerMiser, an energy savings calculator is available within Drive Engineer or as a stand-alone application at


What is the normal shelf life for a belt?

With proper storage, normal shelf life is seven years. The quality of a Carlisle belt is not considered to change significantly within seven years when stored properly under normal conditions. Normal conditions can be defined as temperature below 85°F and relative humidity of 70% or less with no exposure to direct sunlight. Beyond seven years, assuming normal storage, a decrease in service life of approximately 10% per year can be expected. For belts not stored under “normal” conditions, the actual reduction in shelf life is difficult to measure due to lack of precise data and number of variables involved. When belts are stored under abnormal conditions, conservatism is recommended in estimating shelf life.


How do I know when my Carlisle belt was made?

All Carlisle belts have a 4 digit number to identify when they were manufactured. The first 2 numbers indicate the week the belt was produced and the last 2 numbers identify the year. For example, 2716 means the belt was manufactured during the 27th week of 2016. 



What is the difference between anti-static or static dissipating?

These terms have the same meaning. Anti-static means that a static charge will not build up on the belts. Static Dissipating means that when static starts to build up on the belt, it is able to carry it away. Under certain conditions of temperature and humidity, a belt drive may generate static electricity. Belts intended for operation in a potentially dangerous atmosphere can be constructed with a relatively low electrical resistance characteristic. It has become common practice to specify and refer to such belts as “static conductive”, “static dissipating”, or “anti-static.” Most Carlisle v-belts are static dissipating.                                                                           

What is the Horsepower rating of a belt?

It depends on the pulley sizes, rpm, and overall drive parameters. You can calculate the HP rating of specific Carlisle belts using Drive Engineer, available at


Are you ISO certified?

Yes. Timken belt manufacturing plants are certified as compliant with the International Standard ISO 9001.


Do Carlisle belts meet CID A-A-52160A?

No. This US military spec has a -40°F test requirement and our material does not meet that requirement.


Is there a recommended maximum speed for pulleys?

6,500 feet per minute is the maximum recommended rim speed for standard pulleys on an industrial belt drive.  Anything over that requires ductile iron or steel (special order) and needs to be balanced accordingly.


Please explain the part number for Panther.

The Panther part number is the length, followed by the pitch and top width. For example, 3600-8MPT-30 has a 3600 mm pitch length, 8 mm pitch, PT stands for Panther and 30 is the top width in mm.


What is the temperature rating for a Panther belt?

The temperature rating for a Carlisle Panther synchronous belt is 200°F.


Where are Ultimax belts made?

All Ultimax snowmobile and ATV/UTV/SxS drive belts are proudly made at the Timken Belts plant located in Springfield, Missouri – in the heart of the USA.


Are Ultimax and Dayco belts made by the same company?

No. In 2001, Carlisle Companies, Inc. purchased the Dayco Industrial Belt Division with manufacturing facilities in Springfield Missouri and Ft. Scott Kansas. The acquisition by Carlisle included belts for the industrial, agricultural, lawn and garden, and powersports markets that Dayco once served. Among the products acquired by Carlisle were the drive belts that are produced for major OEM snowmobile and ATV manufacturers as well as the leading aftermarket brand, Ultimax. In 2015, Timken acquired the Carlisle belt business which includes Carlisle and Ultimax brand belts. A number of current Timken Belts associates began as Dayco employees, bringing years of valuable belt expertise to the Carlisle and Ultimax brands.


What about Dayco belts?

Dayco divested itself of the industrial markets it once served and is not associated with Timken, Carlisle belts or Ultimax belts in any way. Dayco exists primarily as an automotive supplier. Dayco also produces snowmobile and ATV belts which are sold through some automotive parts stores. 

Timken Belts manufactures premium quality Ultimax MAX, Ultimax PRO, and Ultimax XS snowmobile belts and Ultimax ATV/UTV/SxS belts that are sold through powersports dealers. Timken is also a major supplier of original equipment ATV and snowmobile belts.


Where can I buy Ultimax belts?

You can purchase Ultimax belts from any powersports dealer. If your dealer does not have the belt you need in stock, they can order from one of our distributors. Ultimax belts can also be purchased on-line from a variety of websites.


Is there a warranty on Ultimax belts?

We stand behind all of our products and offer a one or two year limited warranty on snowmobile and ATV/UTV/SxS belts. Please see details on the belt sleeve for specific warranty. 


Do you have any tips on powersports belt installation?

You can find helpful hints on ATV belt installation on the Ultimax YouTube Channel.


Does it make a difference which direction you install a drive belt?

It doesn't matter which way you install the belt the first time, but it is important to keep the belt installed the same direction throughout the life of the belt.  If for any reason you have to take the belt off your machine, put it back on in the same rotation direction it was going when it was removed. An easy way to remember this is to always put the belt on so you can read the label on the belt.


Why do Ultimax belts have different dimensions than competitive belts?

Belt dimensions can vary from one manufacturer to another based on proprietary design information. Ultimax belts are built to exacting specifications and inspected with calibrated equipment to assure strict dimensional compliance.


Outside circumference and top width have traditionally been published. These dimensions should not be used to determine product functionality and may be more misleading than helpful. Proper fit and performance depend on the thickness of the belt, the bottom width, angle, etc. Ultimax measures the effective length, center distance and ride-out on precision measuring equipment to produce a consistent high quality product.


The next time you measure a belt or compare the width of one belt to another, please realize that the real comparison should be on how the belt fits and performs on the machine.