Single Row Deep Groove Ball Bearings RMS 8

The RMS 8 is a single-row deep groove ball bearing with a 1-inch bore and 2.5-inch outer diameter, crafted from sturdy chrome steel. It handles radial loads up to 5058 lbf and spins smoothly at speeds up to 16,000 RPM.

Its open design allows for easy lubrication, while the stainless steel cage ensures durability. The bearing operates well in temperatures ranging from -30°C to 120°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for applications like electric motors or pumps where radial loads are common.

Weighing just 0.27kg, it’s lightweight yet robust. Compliant with RoHS and REACH standards for safe use.

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Description

Features

Application

Q&A

Product Parameters

Part Number RMS 8
Brand TFL
Interchangeable SKF
System of Measurement Inch
For Load Direction Radial
Construction Single Row
Bearing Type Ball
Seal Type Open
Tolerance Class P6
Radial Clearance Trade No CN
Bore Dia 1"
Bore Dia Tolerance -0.00019" to 0.00019"
Outer Dia 2.5"
Outer Dia Tolerance -0.00098" to -0.00051"
Width 0.75"
Width Tolerance -0.005" to 0"
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Stainless Steel
REACH Compliant
Temperature Range -30° to 120 °C
Dynamic Radial Load 5058 lbf
Static Radial Load 2608 lbf
Max Speed 16000 rpm
Weight 0.27 kg
price（$） 14.895

Features

High-Quality Steel Construction: The TFL RMS 8 is made from premium-grade steel. This makes it tough and durable, so it will not easily wear out or break under regular use. The benefit is a longer-lasting part of your project, saving you time and money.
Deep Groove Design for Versatility: The “deep groove” in the name refers to the track that the balls roll in. This specific shape allows the bearing to handle two types of forces: radial loads (up and down) and axial loads (side to side). This versatility empowers you to use the TFL RMS 8 in a wide range of applications, from robotics to skateboards, making it an incredibly versatile choice.
Precision Engineering for Smooth Operation: Each TFL RMS 8 is built to exact standards. This precision ensures that the internal steel balls roll with minimal friction, resulting in smoother, quieter, and more efficient operation of your machine.
Standard Inch-Series Size: With an inner diameter of 1 inch, an outer diameter of 2.5 inches, and a width of 0.75 inches, the RMS 8 is a standard size that fits a wide range of equipment built using the imperial system, which is common in the US. This makes it an easy part to find and replace.

Application

You can find bearings like the TFL RMS 8 in many machines you see and use every day. Its strength and versatility make it a popular choice for:

Robotics and STEM Projects: Perfect for the moving joints, wheels, and spinning parts of a competition robot or a science fair project that needs to run smoothly and reliably.
Skateboards and Scooters: The wheels on skateboards and scooters require durable bearings to support the rider’s weight and provide a smooth glide. The RMS 8 is an excellent fit for these applications.
Small Motors and Engines: Electric motors in tools, fans, and other small appliances use bearings like this to support the spinning shaft, ensuring it runs efficiently and quietly.
Agricultural and Lawn Equipment: From the pulleys on a lawn mower deck to components of a conveyor system, the RMS 8 is utilized in light-duty machinery to keep things moving.

Q&A

Is the TFL RMS 8 bearing pre-lubricated?

Yes, our TFL RMS 8 bearings come pre-lubricated with high-quality grease, ensuring smooth operation right out of the box. For most common uses, you will not need to add any more lubricant.

What kind of loads can it handle?

This is a medium-duty bearing designed to handle both radial loads (forces pushing down on the bearing) and some axial loads (forces pushing on it from the side). It is ideal for applications such as wheels and spinning shafts in small to medium-sized machines.

Does this bearing require any maintenance?

The TFL RMS 8 is designed to be low-maintenance, a testament to its durability. Since it comes pre-lubricated and is made from durable materials, it typically requires minimal maintenance in most applications. If you are using it in a very dirty or wet environment, consider a sealed version (if available) to protect it.

What do the numbers in "RMS 8" mean?

The "RMS" part of the name identifies it as part of a standard series of inch-sized deep groove ball bearings. The 'R' stands for 'radial,' indicating that it is designed to handle radial loads, and the 'M' stands for 'medium,' indicating that it is a medium-duty bearing. The 'S' is a standard designation for deep groove ball bearings. The "8" specifies the size, which corresponds to an inner diameter of 1 inch, an outer diameter of 2.5 inches, and a width of 0.75 inches. It is a part number, not a rating.

Can I use this for high-speed applications?

The TFL RMS 8 is suitable for moderate speeds, like those found in electric motors, wheels, and conveyor systems. For extremely high-speed applications (such as in high-performance engines or specialized machinery), you should consult an engineering guide to ensure it meets the required speed rating.

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