Bearing Applications


RWM Casters is pleased to offer a wide array of bearings for all conceivable applications. With capacities ranging from 300 pounds to 40,000 pounds and wheel sizes measuring under 3 inches to 14 inches or larger, you’re sure to find the bearing casters perfectly suited for your application.

When you’re ready for more info or to place an order, contact RWM Casters online or give our friendly and knowledgeable team a call at (800) 634-7704.

Types of Bearings

The following bearings are listed in order of ease of effort to begin and maintain rolling action:


Sealed Precision Ball Bearing Casters

Sealed precision ball bearings are recommended for maximum rolling ease with no maintenance lubrication required. They provide quiet operation for medium- to heavy-duty loads. Used in pairs, they press-fit into the wheel hub. Precision ball bearings (standard or stainless steel) for light- or heavy-duty applications can be provided for both radial and thrust loads.


Annular Ball Bearing Casters

Annular ball bearings are “precision” type ball bearings that provide full-length support across the wheel width. The outside races are locked to the inside race by ball bearings and our unique encapsulated raceway. They are ideal for light to medium duty (loads to 1,200 pounds per wheel, radial load rating, manual operation). Side thrust load rating is approximately 20% of radial capacity.


Flanged Ball Bearing Casters

Flanged ball bearings are a unique antifriction design that will eliminate seizing of the bearings and the wheel. These versatile bearings are supplied with shields and are constructed of hardened bearing quality steel with full complement of ball bearings and are pre-greased. The load is transmitted from the outer race to the ball and from the ball to the inner race. Since the ball is a sphere, it only contacts the inner and outer race at a small point, which helps it spin smoothly.


Caged Roller Bearing

Caged roller bearings consist of a cage-type roller assembly and a drawn cup outer race. These bearings turn on hardened and ground spanner bushings that provide a long-wearing precision inner race. Press fit bearings are used in combination with metal retainer/thrust washers. Rubber sealed retaining washers are available for sealed wheels. Caged roller bearings have high radial capacity. Some applications of wheels do not require the use of the spanner bushings.


Roller Bearings

Straight roller bearings consist of a cage-type roller assembly and a split outer race. These bearings turn on hardened and ground spanner bushings, which provide a long-wearing precision inner race. Press fit combination metal retainer/thrust washers hold the bearings in place. Rubber sealed retaining washers are available for sealed wheels. Straight roller bearings have high radial capacity but minimal side thrust load rating. Some applications of wheels do not require the use of the spanner bushings.

Standard Grease: -20 degrees to 275 degrees F. High Temp Grease: -25 degrees to 900 degrees F.


Precision Tapered Roller Bearings

Tapered roller bearings are true precision bearings designed for the heaviest loads and/or high-speed operation. In addition to great radial capacity, they have a side thrust load rating of 60% to 90% of radial capacity rating. The assembly consists of an outer race or cup and a tapered cone roller assembly, normally held in position with closures. When required, more positive grease or dust seals can be provided. Spacers are provided to tighten the caster bearing legs against the bearing assembly. Two bearings are installed per wheel.

Standard Grease: -20 degrees to 275 degrees F. High Temp Grease: -25 degrees to 900 degrees F.


Delrin Bearings

Delrin bearings are extremely durable under a wide range of temperature and humidity conditions. They are corrosion-resistant. Wheels with the Delrin bearings are well suited for applications where brine conditions, steam cleaning, or excessive water or liquids are present. Light oil or grease lubrication is always recommended.


Plastic Sleeve (Celcon) Bearings

For environments unsuitable to metal bearings, celcon bearings offer economical chemical and corrosion resistance. Wheels with celcon bearings are well suited for applications where brine conditions, steam cleaning, excessive water, or liquids are present. Light oil or grease lubrication is always recommended. These types of bearings are available in both flanged or sleeve type bearings.


Oilite Bearings

Oilite bearings are an inexpensive, highly efficient caster wheel sleeve bearing made of powdered metal thoroughly impregnated with oil. These bearings are press-fit into the wheel bore and have a “built-in” lifetime lubrication for normal usage. For severe service, lubricant can be replenished through the hollow axle. These bearings can ride on a spanner bushing or directly on the axle, depending on the application requirements.


Plain Bore

A plain bore means the bore of the wheel is riding directly on the spanner bushing or the caster axle. Plain bore wheels are used for light or seldom moved loads and where ease of starting and rolling is not an important consideration.


What Is the Purpose of Bearings?

Bearings are designed to reduce friction and keep wheels, turbines, rotors, turbines, and more in motion. Because practically every machine requires some type of motion, almost every machine has ball bearings installed.

Because bearings reduce friction, they also reduce the amount of energy required to facilitate smoother rotation. This makes them ideal for use within casters and wheels where the smooth movement of finished goods, raw materials, and heavy equipment is essential. Properly lubricated and maintained, the bearings within your casters and wheels should last for as long as you own them.

Contact RWM at (800) 634-7704 to learn more about the bearings we use in our casters and wheels and about the precision engineering that goes into our designs to guarantee a smooth and reliable motion.  

Order Bearings From RWM Casters

No matter what your intended application may be, we are equipped with the ideal bearings needed. We are more than happy to discuss your unique needs and offer our guidance on the bearings that may work best for you.

If you have questions or would like to learn more about our industry-leading caster bearings, give us a call at (800) 634-7704 or contact us online for additional bearing options.