Mr115zz 5x11x4mm Ball Bearing

Small Dimensions for Space-Constrained Assemblies

When a bearing has to fit into a compact housing, every millimeter matters. The MR115ZZ is a miniature deep groove ball bearing with a 5 mm bore, an 11 mm outside diameter, and a 4 mm width. Its compact dimensions make it a practical option for small rotating assemblies where installation space is limited.

Both sides are fitted with metal shields to help retain the factory lubricant and reduce the entry of dust and other particles. This makes the MR115ZZ suitable for applications where a compact bearing with basic contamination protection is required.

For OEM purchasing teams and industrial component distributors, the MR115ZZ provides a defined metric size for equipment production, replacement parts, and ongoing inventory requirements.

Specifications should be checked against the actual product drawing and quotation. Material, internal clearance, tolerance class, lubricant, and performance ratings may vary by manufacturer or product configuration.

1. Confirm the Available Installation Space

The 5 × 11 × 4 mm envelope is the first point to check when selecting this bearing. The shaft diameter, housing bore, shoulder dimensions, and available axial clearance should all match the intended mounting arrangement.

For replacement purchases, compare the existing bearing designation and dimensions rather than relying on appearance alone. A bearing with a similar outside diameter may have a different bore or width.

2. Choose the Right Shield Configuration

The two metal shields are a defining feature of the MR115ZZ. They help limit the entry of ordinary dust and retain lubricant, but they are not designed to provide the same sealing performance as rubber contact seals.

For equipment exposed to frequent washdowns, heavy moisture, or fine contaminants, review the operating environment before choosing a shielded bearing.

3. Match the Bearing to Actual Operating Conditions

A miniature bearing should be selected according to the load, rotational speed, temperature, lubrication, and expected duty cycle of the equipment.

The MR115ZZ is designed for compact bearing arrangements, but its suitability for a particular operating speed or load should be established using the supplier's verified ratings. A small bearing should not be assumed suitable for every high-speed application simply because of its size.

The MR115ZZ may be specified in compact mechanisms where its dimensions, load capacity, and shield arrangement meet the design requirements.

Typical areas for evaluation include:

Small electric motors: Supporting rotating shafts in compact motor assemblies.

Precision mechanisms: Used in small moving components where controlled bearing dimensions are important.

Office and household equipment: Suitable for selected rotating or drive mechanisms.

Light-duty instruments and devices: For compact assemblies with appropriate radial loads and operating conditions.

OEM replacement programs: Used to maintain consistency in equipment that already specifies the MR115ZZ size.

Final suitability depends on the design and operating conditions of the equipment.

For distributors and manufacturers, the purchasing decision often extends beyond the bearing itself. Consistent specifications, dependable identification, and manageable stock levels all matter when a small component is used across multiple products.

We supply MR115ZZ miniature ball bearings for industrial and commercial purchasing. Whether you are sourcing parts for scheduled production or replenishing maintenance inventory, providing the required quantity and technical details helps us prepare a more accurate quotation.

For recurring orders, buyers can also specify packaging preferences, batch identification, inspection requirements, and any documentation needed for incoming quality control.

The main distinction is the closure design.

The exact construction of an MR115-2RS can vary by supplier. Check the manufacturer's drawing before treating the two designations as interchangeable.

1. What are the dimensions of an MR115ZZ bearing?

The standard dimensions are 5 mm bore, 11 mm outside diameter, and 4 mm width. The designation and dimensions should still be confirmed against the supplier's drawing before ordering.

2. What does ZZ mean on a miniature ball bearing?

ZZ indicates that the bearing has metal shields on both sides. These shields help retain lubricant and reduce the entry of dust and other particles, but they are not equivalent to fully sealed protection.

3. Is MR115ZZ suitable for high-speed applications?

It can be considered for high-speed designs only when the operating conditions fall within the supplier's specified limits. Check the rated speed, lubricant, internal clearance, load, and temperature before finalizing the selection.

4. Can MR115ZZ be used as a replacement for another 5 × 11 × 4 mm bearing?

Not automatically. In addition to dimensions, verify the closure type, internal clearance, tolerance class, material, and lubrication. These details can affect fit and operating performance.

5. What information should I provide when requesting a quotation?

Please include the required quantity, material preference, clearance or tolerance requirements, operating conditions where relevant, and any drawing or existing part reference. Packaging and inspection requirements can also be included.

6. Do you support wholesale and OEM orders?

Bulk supply can be discussed according to order quantity, stock availability, and specification. For OEM or repeat orders, confirming the technical requirements in advance helps maintain consistency across purchases.

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