Product Introduction

The 16000 series Deep Groove Ball Bearings (formerly the 7000100 series) are identified by model numbers starting with "160," such as 16004, 16005, and 16006. Positioned as an "extra-light, narrow" series, they share the same outer diameter as the standard 6000 series (ensuring interchangeability) but feature a narrower width to accommodate limited axial space; their load-carrying capacity falls between that of thin-section series and standard series bearings.

The 16000 series single-row Deep Groove Ball Bearing is a unique series: while its outer diameter is identical to that of the 6000 series, its width is narrower. In essence, the 16000 series can be viewed as a "narrow version" of the 6000 series. By reducing the width while maintaining the same outer diameter, it is suitable for applications with restricted axial space. Although its load-carrying capacity is slightly lower than that of the 6000 series, it exceeds that of thin-section series such as the 61800 and 61900.

Single-row deep groove Ball Bearings represent the most common type of rolling bearing and are widely used. They primarily consist of an inner ring, an outer ring, steel balls (rolling elements), and a cage. In addition to open designs, these bearings are available with steel dust shields (ZZ type), rubber seals (2RS type), or a snap ring on the outer ring (NR type). Pressed steel cages are commonly used.

Characterized by low frictional torque, single-row deep groove ball bearings are ideal for environments requiring high speeds, low noise, and low vibration. They primarily support radial loads but can also withstand moderate bidirectional axial loads. When radial internal clearance is increased, they exhibit characteristics similar to angular contact ball bearings, allowing them to support alternating axial loads in both directions.

Structure and Characteristics

The structure of the 16000 series is identical to that of other single-row deep groove ball bearings, except for the narrower width. This design—featuring an unchanged outer diameter but reduced width—offers the following characteristics:

Good outer diameter interchangeability: The outer diameter is identical to that of the 6000 series, allowing for direct replacement (without altering the housing bore) and eliminating the need to modify the bearing housing.

Narrower width: The width is approximately 20%–40% less than that of the 6000 series, making it suitable for applications with limited axial space.

Moderate load capacity: Load capacity is slightly lower than the 6000 series (due to smaller or fewer steel balls) but superior to thin-walled series like the 61800/61900; it is suitable for light-to-medium loads.

High rotational speed: Limiting speeds are higher than those of the 6000 series (due to reduced width, lower friction, and better heat dissipation), making them suitable for medium-to-high-speed operating conditions.

Average rigidity: The narrow width results in slightly lower rigidity compared to the 6000 series, though it remains superior to thin-walled series.

Moderate selection range: Specifications cover sizes from small to large, with some options for seal types and precision grades, though the variety is not as extensive as that of the 6200 or 6300 series.

Transition from old models: The old designation was the 7000100 series; while some legacy equipment drawings still reference the old model number, the new 16000 series serves as a direct replacement.

Dimensional Parameter Table

Note: The 16000 series shares the same outer diameter as the 6000 series but has a narrower width. The old designation was the 7000100 series.

Common Suffixes

Open: Standard 16000 series products are typically open-type, suitable for oil lubrication.

ZZ / 2Z: Double-sided metal shields; available on select models; provides dust protection but not waterproofing.

2RS: Double-sided rubber seals; available on select models; protects against dust and water, prevents grease leakage, and is maintenance-free.

C2: Internal clearance smaller than standard; for high-precision, low-vibration applications.

C3: Internal clearance larger than standard; for operating conditions involving temperature rise.

/P5 / P6: Precision grades; the 16000 series is primarily used in general industrial equipment (standard P0 grade), while P5 and P6 grades require customization. NR: Features a snap ring groove and snap ring on the outer ring, facilitating axial positioning.

Application Scenarios

The 16000 series (extra-light, narrow bearings) is primarily used in applications where the outer diameter matches the 6000 series but axial space is limited:

Textile machinery: Spindles, looms, knitting machines, and printing/dyeing equipment — characterized by compact axial space, moderate loads, and high speeds.

Printing and packaging machinery: Printing press rollers, packaging machines, and labeling machines — characterized by limited axial space and a need for lightweight components.

Woodworking machinery: Auxiliary supports for saws, planers, and milling machines — characterized by limited axial space and exposure to minor impacts.

Industrial fans and pumps: Small fans, centrifugal pumps, and vacuum pumps — characterized by compact axial space and medium-to-high speeds.

Conveyors and hoists: Small conveyor rollers and hoist sprockets — characterized by limited axial space and moderate loads.

Agricultural machinery: Auxiliary drives for harvesters, seeders, and rotary tillers — characterized by limited axial space and diverse operating conditions.

Automotive and construction machinery: Auxiliary automotive components and auxiliary mechanisms in construction equipment — characterized by limited axial space.

Maintenance and replacement for legacy equipment: Direct replacement of older 7000100 series bearings with the 16000 series, requiring no modification to the housing bore.

Power tools and home appliances: Certain power tools and appliance motors — characterized by compact axial space and high-volume production.

Key Distinctions

The defining characteristic of the 16000 series is that it shares the same outer diameter as the 6000 series but has a narrower width. Differences from other series can be understood as follows:

61800/6800 series (Ultra-thin wall): Significantly smaller outer diameter and narrower width than the 16000 series; lower load capacity; used in precision applications with extremely limited space.

61900/6900 series (Thin wall): Smaller outer diameter and lower load capacity than the 16000 series; offers the best versatility among thin-wall series. 16000 Series (Extra-light, Narrow): Shares the same outer diameter as the 6000 series (allowing for housing bore interchangeability) but is narrower; load capacity falls between the thin-section series and the 6000 series. It is the optimal choice when axial space is limited but the housing bore was originally designed for the 6000 series.

6000 Series (Extra-light): Shares the same outer diameter as the 16000 series but offers greater width, higher load capacity, and superior rigidity. The 6000 series should be the first choice when axial space permits.

6200/6300/6400 Series: Feature larger outer diameters and higher load capacities; these belong to a different application category than the 16000 series.

Selection Recommendations

1. Prioritize checking axial space: The key advantage of the 16000 series is that it matches the 6000 series' outer diameter while being narrower. If there is sufficient axial space for the 6000 series, choose the 6000 series first (it offers higher load capacity, better rigidity, a wider selection, and more economical pricing). Select the 16000 series only when axial space constraints prevent the use of the 6000 series.

2. Verify housing bore interchangeability: The 16000 series has the exact same outer diameter as the 6000 series; if the equipment housing bore was designed for the 6000 series, the 16000 series can be installed directly without modifying the bore. This is a major advantage of the 16000 series.

3. Check load capacity: The load capacity of the 16000 series is approximately 20%–30% lower than that of the 6000 series. Be sure to calculate service life based on actual loads to ensure requirements are met. Overloading is a common cause of premature failure in the 16000 series.

4. Check rotational speed: The limiting speed of the 16000 series is higher than that of the 6000 series, but it is recommended that the actual operating speed does not exceed 80% of the limiting speed.

5. Select seals: Choose ZZ for dry environments, 2RS for humid or dusty environments, and open bearings for oil lubrication. Note: The 16000 series offers a more limited range of seal options compared to the 6200 and 6300 series.

6. Selecting internal clearance: Choose C0 for standard operating conditions at ambient temperature; choose C3 for applications involving temperature rise; choose C2 for precision, low-vibration applications.

7. Replacing old part numbers: Old part numbers from the 7000100 series found on legacy equipment drawings can be directly replaced with the corresponding 16000 series models, as the dimensions are identical.

8. Consider the 61900 series as an alternative: If a smaller outer diameter is permissible (i.e., interchangeability with the 6000 series is not required), the 61900 series may offer a lighter, slimmer profile and better cost-effectiveness for certain sizes; it is worth comparing the options.